Summary
Plan status as of 2026-09-30: Approved, expires 2029-07-27. Plan: Northern Mariana Islands state-level plan (plan 109829), approved 2024-07-28.
Since the plan was approved on 2024-07-28: 4 new hazard declarations (2 incidents): EM-3645-MP (Typhoon Sinlaku), DR-4910-MP (Super Typhoon Sinlaku), EM-3647-MP (Typhoon Bavi), DR-4931-MP (Super Typhoon Bavi).
NOAA Storm Events records since that date: 12 records (data through 2026-06-30).
Highest expected annual loss (FEMA National Risk Index, modeled total; see B1-a): Tsunami ($30,841,032 a year), Hurricane ($21,610,757) and Earthquake ($3,035,568).
Repetitive-loss flood properties now: FMA RL 0, SRL 0 (44 CFR 77.2); any definition: 0.
The tables that follow are organized by the items of FEMA's Local Mitigation Plan Review Tool, Element B (B1-a to B2-c); each heading says which item its tables support.
Plan clock
- Status:
- Approved, expires 2029-07-27
- Plan:
- Northern Mariana Islands state-level plan (plan 109829)
- Approved:
- 2024-07-28
- Days to expiry:
- 1,031
Plan clock from the Northern Mariana Islands state-level plan; FEMA plan data has no county-level or local plan row for this area.
What changed since your last plan (approved 2024-07-28)
- New federal declarations:
- 4 new hazard declarations (2 incidents): EM-3645-MP (Typhoon Sinlaku), DR-4910-MP (Super Typhoon Sinlaku), EM-3647-MP (Typhoon Bavi), DR-4931-MP (Super Typhoon Bavi)
- Storm Events records since approval:
- 12 records (data through 2026-06-30)
- Repetitive loss now:
- FMA RL 0, SRL 0 (44 CFR 77.2); any definition: 0
- Repeat-flood change:
- this release sets the baseline count.
Sources: 1, 2, 4, 6 (numbered list at the end)
Plan status for every jurisdiction listed in this county
Source: 1
| Jurisdiction | Type | Status | Plan | Approved | Expires | Days to expirynegative = days since expiry | Update underway | Notes |
|---|---|---|---|---|---|---|---|---|
| No rows for this unit. | ||||||||
No jurisdictions listed in FEMA plan data for this unit.
Plan 109829 covers 1 other participant: Northern Mariana Islands.
State plan status and tribal plans in this state: see the state page.
Supports FEMA checklist item B1-a: hazard identification
Hazards NRI does not cover (local data needed)
- dam failure (incl. upstream dams)
- levee failure
- flash flood as its own subtype
- ice jams
- debris flows
- erosion (riverine and coastal)
- land subsidence and sinkholes
- expansive soils
The 18 National Risk Index hazards, ranked by expected annual loss (EAL)
Sources: 5, 6
| Rank by EAL | Hazard | NRI risk rating | EAL rating | EAL buildingsmodeled dollars per year | EAL agriculturemodeled dollars per year | Cost of expected deaths and injuriesFEMA's dollar value per year, not property damage | EAL total (see note)modeled dollars per year | Storm Events records, 1996 to 2026-06-30count | Storm Events coverage note |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Tsunami | Insufficient Data | Relatively High | $159,249 | n/a | $30,681,783 | $30,841,032 | 0 | No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. |
| 2 | Hurricane | Insufficient Data | Relatively High | $20,152,990 | $8,590 | $1,449,178 | $21,610,757 | 13 | Includes 2 Tropical Depression records (outside NRI's Hurricane definition). |
| 3 | Earthquake | Insufficient Data | Relatively Low | $2,477,504 | n/a | $558,064 | $3,035,568 | Storm Events does not record earthquakes. | |
| 4 | Coastal Flooding | Insufficient Data | Relatively Low | $46,746 | n/a | $138 | $46,884 | 1 | |
| 5 | Inland Flooding | Insufficient Data | Very Low | $0 | $6 | $9,775 | $9,781 | 5 | |
| 6 | Volcanic Activity | Insufficient Data | Relatively Low | $5 | n/a | $2,088 | $2,092 | 2 | |
| 7 | Cold Wave | Insufficient Data | No Expected Annual Losses | $0 | $0 | $0 | $0 | 0 | No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. |
| 8 | Heat Wave | Insufficient Data | No Expected Annual Losses | $0 | $0 | $0 | $0 | 0 | No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. |
| 9 | Winter Weather | Insufficient Data | No Expected Annual Losses | $0 | $0 | $0 | $0 | 0 | No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. |
| Drought | Insufficient Data | Insufficient Data | n/a | n/a | n/a | n/a | 19 | ||
| Hail | Insufficient Data | Insufficient Data | n/a | n/a | n/a | n/a | 0 | No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. | |
| Landslide | Insufficient Data | Insufficient Data | n/a | n/a | n/a | n/a | 0 | No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. | |
| Lightning | Insufficient Data | Insufficient Data | n/a | n/a | n/a | n/a | 1 | ||
| Strong Wind | Insufficient Data | Insufficient Data | n/a | n/a | n/a | n/a | 2 | Includes 2 High Wind records (a NOAA non-thunderstorm wind type, outside NRI's Strong Wind definition). | |
| Tornado | Insufficient Data | Insufficient Data | n/a | n/a | n/a | n/a | 0 | No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. | |
| Wildfire | Insufficient Data | Insufficient Data | n/a | n/a | n/a | n/a | 0 | No recorded events in Storm Events since 1996 (data through 2026-06-30). Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. |
Total = buildings + agriculture + population equivalence; FEMA values each expected death (or 10 injuries) at $13.7 million (2024 dollars).
NRI risk rating combines expected annual loss with social vulnerability and community resilience; EAL rating rates expected annual loss alone. Both compare this county with all U.S. counties.
Local data needed: state and local tsunami, cold wave, heat wave, winter weather, hail, landslide, tornado and wildfire records (Storm Events records these hazards only in part).
Not applicable to this county per NRI, with no federal declaration and no Storm Events record since 1996: avalanche and ice storm. That is the evidence for leaving them out of the plan.
The state hazard mitigation plan also lists hazards for this county; FEMA asks the plan to explain any hazard it leaves out.
Supports FEMA checklist item B1-b: hazard location
Affects the whole county (national data give no location within it): Cold Wave, Drought, Hail, Heat Wave, Lightning, Strong Wind and Winter Weather.
Coastal Flooding and Inland Flooding: The FEMA Flood Insurance Rate Map (FIRM) is the required location source for flooding. See the FEMA Flood Map Service Center (https://msc.fema.gov) for this county.
Hazards that vary within the county: highest-rated census tracts
Source: 5
| Hazard | Highest-rated census tractsNRI risk rating, score 0 to 100 |
|---|---|
| Earthquake | no tract has a National Risk Index rating for this hazard |
| Hurricane | no tract has a National Risk Index rating for this hazard |
| Landslide | no tract has a National Risk Index rating for this hazard |
| Tornado | no tract has a National Risk Index rating for this hazard |
| Tsunami | no tract has a National Risk Index rating for this hazard |
| Volcanic Activity | no tract has a National Risk Index rating for this hazard |
| Wildfire | no tract has a National Risk Index rating for this hazard |
Up to 3 census tracts per hazard, highest National Risk Index rating first, then highest score; a tract number is the Census tract number. FEMA's Resilience Analysis and Planning Tool maps the National Risk Index for every tract: https://www.fema.gov/emergency-managers/practitioners/resilience-analysis-and-planning-tool
Supports FEMA checklist item B1-c: hazard extent
Extent: scale, observed range and worst recorded event per hazard
Sources: 6, 7
| Hazard | Scale | Recordscount and years | Observed range | Worst recorded event | Most damaging (when different) | How it applies to jurisdictions | Note |
|---|---|---|---|---|---|---|---|
| Coastal Flood, Storm Surge/Tide | none in data (flood depth: FIRM) | 1 record, 2025 (1 zone-level) | No damage reported in 1 record. | Countywide (zone-level records). | Flood depth: see the FEMA Flood Insurance Rate Map. | ||
| Cold/Wind Chill, Extreme Cold/Wind Chill | wind chill | 0 | Wind chill: in event narratives only (local data needed). | ||||
| Frost/Freeze (outside NRI's Cold Wave definition) | crop damage | 0 | Temperature: in event narratives only (local data needed). | ||||
| Drought | U.S. Drought Monitor scale (D0 to D4) | 19 records, 2016 to 2025 (19 zone-level) | 61 days to 184 days (median 139.5 days); 4 with a recorded value | 184 days (6 months), 2020-03-01 to 2020-08-31, a run of 6 consecutive Storm Events drought records, zone-level | Countywide (zone-level records). | Storm Events enters a drought at D2 or worse east of the Rockies and D3 or worse from the Rockies west (NWS Instruction 10-1605); NRI drought counts D3 and D4 only. | |
| Earthquake | Modified Mercalli (local data) | 0 | Storm Events does not record earthquakes; the USGS earthquake catalog is the source. | ||||
| Hail | hail size (inches) | 0 | |||||
| Excessive Heat, Heat | heat index (in event narratives) | 0 | Heat index: in event narratives only (local data needed). | ||||
| Hurricane, Tropical Storm, Tropical Depression | Saffir-Simpson | 13 records, 1997 to 2025 (13 zone-level) | Strongest recorded: Hurricane (Typhoon) record (NOAA's event type name), 2018-10-24 to 2018-10-25, category 5, $500,000,000 property; $2,000,000 crops (2018 dollars) (as recorded; larger than this county's annual agriculture value in the National Risk Index (the county or state extension service keeps crop loss records)), 121 direct injuries (reported for the zone); Storm Events area SAIPAN (legacy zone code GUZ007) | Countywide (zone-level records). | Storm Events files every zone of a storm's episode under the storm's type; flooding from the storm is filed as Flood or Flash Flood records. | ||
| Flash Flood, Flood, Lakeshore Flood | damage and flood days (flood depth: FIRM) | 5 records, 2002 to 2024 (2 zone-level) | Flood, 2002-09-20, $40,000 property; crops not reported (2002 dollars); Storm Events area SAIPAN (legacy zone code GUZ007) | No event record names a jurisdiction in the plan. Zone-level records (2) apply countywide. | Flood depth: see the FEMA Flood Insurance Rate Map. Storm Events damage is often $0 or blank for floods, major ones included; FEMA Public Assistance by declaration (B1-d) shows which floods cost the most. | ||
| Debris Flow | none (count and damage only) | 0 | Physical measure: in event narratives only (local data needed). | ||||
| Lightning | annualized frequency (the measure FEMA's Local Mitigation Planning Handbook names) | 1 record, 2003 | No damage or casualties reported in 1 record. | No event record names a jurisdiction in the plan. | Storm Events lists lightning with damage or casualties; physical measure in event narratives only (local data needed). | ||
| High Wind and Strong Wind (outside NRI's Strong Wind definition) | wind speed (kt and mph) | 2 records, 1997 to 2024 (2 zone-level) | 53 kt (61 mph); 1 with a recorded value | 53 kt (61 mph) measured gust, High Wind, 2024-09-16; Storm Events area SAIPAN (legacy zone code GUZ007) | High Wind, 1997-08-12, $300,000 property; crops not reported, reported for the zone (1997 dollars) | Countywide (zone-level records). | |
| Thunderstorm Wind | wind speed (kt and mph) | 0 | |||||
| Tornado | Enhanced Fujita (Fujita before Feb 2007) | 0 | Before 1996 a tornado is listed once, under the county where it began, with its whole path's rating and length; from 1996 on, each county lists its own segment. Length is not used to rank tornadoes (see Methods). | ||||
| Tsunami | none (count and damage only) | 0 | Physical measure: in event narratives only (local data needed). | ||||
| Volcanic Ash, Volcanic Ashfall | Volcanic Explosivity Index (local data) | 2 records, 2003 (2 zone-level) | No damage reported in 2 records. | Countywide (zone-level records). | Physical measure: in event narratives only (local data needed). | ||
| Wildfire | acres burned (local data) | 0 | Acres burned: in event narratives only (local data needed). | ||||
| Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet | none in data (snowfall: local data) | 0 | Snow depth: in event narratives only (local data needed). |
Storm Events records are more complete after 1996; before 1996 only Tornado (from 1950), Hail and Thunderstorm Wind (from 1955) exist. Zone-level records whose zone no NWS zone-county file places in this county (mostly before 2020) are not counted here (the Methods page explains the zone matching).
Dollars are nominal (as reported), labeled with the year; not adjusted for inflation.
Supports FEMA checklist item B1-d: previous occurrences
Federal declarations for this county: 23 declarations covering 16 separate hazard incidents counted in this packet (declarations for the same incident count once; non-natural and evacuation-only declarations are not counted).
Federal disaster declarations for this county
Sources: 1, 2, 3
| Declared | Incident began | FEMA number | Type | Title | Mapped hazard | County Public Assistancefederal share obligated, nominal dollars | Flags | Notes |
|---|---|---|---|---|---|---|---|---|
| 2026-08-03 | 2026-07-04 | DR-4931-MP | Major disaster | Super Typhoon Bavi | Hurricane | not yet in FEMA's PA summaries (they cover declarations through 2026-06-30) | new since last plan; within last 5 years | |
| 2026-07-03 | 2026-07-02 | EM-3647-MP | Emergency | Typhoon Bavi | Hurricane | not yet in FEMA's PA summaries (they cover declarations through 2026-06-30) | new since last plan; within last 5 years | same incident as DR-4931 |
| 2026-04-23 | 2026-04-11 | DR-4910-MP | Major disaster | Super Typhoon Sinlaku | Hurricane | $499,697.02 | new since last plan; within last 5 years | |
| 2026-04-11 | 2026-04-11 | EM-3645-MP | Emergency | Typhoon Sinlaku | Hurricane | no Public Assistance recorded | new since last plan; within last 5 years | same incident as DR-4910 |
| 2023-10-08 | 2023-10-09 | EM-3602-MP | Emergency | Tropical Storm Bolaven | Hurricane | no Public Assistance recorded | in the 12 months before plan approval; within last 5 years | |
| 2023-06-02 | 2023-05-22 | DR-4716-MP | Major disaster | Typhoon Mawar | Hurricane | no Public Assistance recorded | within last 5 years | |
| 2023-05-22 | 2023-05-22 | EM-3593-MP | Emergency | Typhoon Mawar | Hurricane | no Public Assistance recorded | within last 5 years | same incident as DR-4716 |
| 2020-04-01 | 2020-01-20 | DR-4511-MP | Major disaster | COVID-19 Pandemic | Non-natural, not counted | $43,924.16 | ||
| 2020-03-13 | 2020-01-20 | EM-3463-MP | Emergency | COVID-19 | Non-natural, not counted | no Public Assistance recorded | same incident as DR-4511 | |
| 2019-10-20 | 2019-10-20 | EM-3425-MP | Emergency | Typhoon Bualoi | Hurricane | no Public Assistance recorded | ||
| 2019-10-07 | 2019-10-07 | EM-3424-MP | Emergency | Typhoon Hagibis | Hurricane | no Public Assistance recorded | ||
| 2018-10-26 | 2018-10-24 | DR-4404-MP | Major disaster | Super Typhoon Yutu | Hurricane | $7,222,810.57 | ||
| 2018-10-23 | 2018-10-24 | EM-3408-MP | Emergency | Typhoon Yutu | Hurricane | no Public Assistance recorded | same incident as DR-4404 | |
| 2018-09-29 | 2018-09-10 | DR-4396-MP | Major disaster | Typhoon Mangkhut | Hurricane | no Public Assistance recorded | ||
| 2018-09-10 | 2018-09-10 | EM-3402-MP | Emergency | Typhoon Mangkhut | Hurricane | no Public Assistance recorded | same incident as DR-4396 | |
| 2015-08-05 | 2015-08-01 | DR-4235-MP | Major disaster | Typhoon Soudelor | Hurricane | $2,272,170.90 | ||
| 2005-11-08 | 2005-08-30 | DR-1611-MP | Major disaster | Typhoon Nabi | Hurricane | $53,990.05 | ||
| 2004-08-26 | 2004-08-21 | DR-1541-MP | Major disaster | Flooding, High Surf, Storm Surge, and High Winds As a Result of Super Typhoon Ch | Hurricane | $691,098.37 | ||
| 2004-07-29 | 2004-06-27 | DR-1532-MP | Major disaster | Flooding, High Surf, High Winds, and Wind-Driven Rain Associated W Typh Tingting | Hurricane | $165,492.33 | ||
| 2002-12-11 | 2002-12-08 | DR-1447-MP | Major disaster | Super Typhoon Pongsona | Hurricane | $271,173.29 | ||
| 1997-12-08 | 1997-11-02 | DR-1192-MP | Major disaster | Super Typhoon Keith | Hurricane | no Public Assistance recorded | ||
| 1990-02-05 | 1990-01-15 | DR-854-MP | Major disaster | Typhoon Koryn | Hurricane | no Public Assistance recorded | ||
| 1987-11-03 | 1987-10-18 | DR-800-MP | Major disaster | Typhoon Lynn | Hurricane | no Public Assistance recorded |
County Public Assistance: applicants the FEMA record places in this county, including any state agencies FEMA files there; statewide rows are listed on the state page; federal share obligated, nominal dollars.
Public Assistance filed under this county for declarations that do not list it: 1 row, $236,610.06
Sources: 2, 3
| FEMA number | Declared | Title | Applicant | PA obligatedfederal share obligated, nominal dollars |
|---|---|---|---|---|
| DR-1430-MP | 2002-08-06 | Typhoon Chata'an | Office of the Governor | $236,610.06 |
FEMA's Public Assistance summaries file these applicants under this county, but FEMA's declaration rows for these disasters do not designate it (an electric cooperative or district serving several counties, for example). Not in any declaration row above and not counted.
Previous occurrences by hazard, with explicit no-event rows
Sources: 2, 6, 7
| Hazard | Storm Events records, all years on file(years in the Period column) | Since plan approvalrecords | In the 12 months before plan approvalrecords | Last 5 yearsrecords | Declared incidents, all yearsseparate disasters | Declared since approvalseparate disasters | Period | Statement |
|---|---|---|---|---|---|---|---|---|
| Coastal Flooding | 1 | 1 | 0 | 1 | 0 | 0 | 1996 to 2026-06-30 | |
| Cold Wave | 0 | 0 | 0 | 0 | 0 | 0 | 1996 to 2026-06-30 | No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events. Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. |
| Drought | 19 | 7 | 4 | 11 | 0 | 0 | 1996 to 2026-06-30 | |
| Earthquake | 0 | 0 | 0 | 0 | 0 | 0 | Storm Events does not record earthquakes; the USGS earthquake catalog is the source. | |
| Hail | 0 | 0 | 0 | 0 | 0 | 0 | 1955 to 2026-06-30 | No recorded events, 1955 to 2026-06-30, NOAA NCEI Storm Events. Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. |
| Heat Wave | 0 | 0 | 0 | 0 | 0 | 0 | 1996 to 2026-06-30 | No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events. Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. |
| Hurricane | 13 | 2 | 1 | 4 | 16 | 2 | 1996 to 2026-06-30 | Includes 2 Tropical Depression records. |
| Inland Flooding | 5 | 1 | 0 | 1 | 0 | 0 | 1996 to 2026-06-30 | |
| Landslide | 0 | 0 | 0 | 0 | 0 | 0 | 1996 to 2026-06-30 | No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events. Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. |
| Lightning | 1 | 0 | 0 | 0 | 0 | 0 | 1996 to 2026-06-30 | |
| Strong Wind | 2 | 1 | 0 | 1 | 0 | 0 | 1955 to 2026-06-30 | Includes 2 High Wind records. |
| Tornado | 0 | 0 | 0 | 0 | 0 | 0 | 1950 to 2026-06-30 | No recorded events, 1950 to 2026-06-30, NOAA NCEI Storm Events. Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. |
| Tsunami | 0 | 0 | 0 | 0 | 0 | 0 | 1996 to 2026-06-30 | No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events. Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. |
| Volcanic Activity | 2 | 0 | 0 | 0 | 0 | 0 | 1996 to 2026-06-30 | |
| Wildfire | 0 | 0 | 0 | 0 | 0 | 0 | 1996 to 2026-06-30 | No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events. Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. |
| Winter Weather | 0 | 0 | 0 | 0 | 0 | 0 | 1996 to 2026-06-30 | No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events. Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. |
Notable Storm Events records
Sources: 1, 6, 7
| Date | Event type | Magnitude or extent | Damagenominal dollars | Deaths, injuriesdirect only | Location | Flags | Why listed |
|---|---|---|---|---|---|---|---|
| 2024-09-16 | High Wind | 53 kt (61 mph) measured gust | $0 property; $0 crops, reported for the zone (2024 dollars) | 0, 0 | Storm Events area SAIPAN (legacy zone code GUZ007), zone-level | new since last plan; within last 5 years | B1-c worst recorded: High Wind and Strong Wind |
| 2020-03-01 | Drought | damage not reported | 0, 0 | Storm Events area SAIPAN (legacy zone code GUZ007), zone-level | B1-c worst recorded: Drought | ||
| 2018-10-24 | Hurricane (Typhoon), NOAA's event type name | category 5 | $500,000,000 property; $2,000,000 crops, reported for the zone (2018 dollars) (as recorded; larger than this county's annual agriculture value in the National Risk Index (the county or state extension service keeps crop loss records)) | 0, 121 | Storm Events area SAIPAN (legacy zone code GUZ007), zone-level | deaths or injuries recorded | |
| 2015-08-02 | Hurricane (Typhoon), NOAA's event type name | category 4 | $20,000,000 property; $1,000,000 crops, reported for the zone (2015 dollars) (as recorded; larger than this county's annual agriculture value in the National Risk Index (the county or state extension service keeps crop loss records)) | 0, 40 | Storm Events area SAIPAN (legacy zone code GUZ007), zone-level | deaths or injuries recorded | |
| 2004-08-05 | Flash Flood | $10,000 property; $0 crops (2004 dollars) | 0, 0 | COUNTYWIDE | large reported damage | ||
| 2002-12-08 | Hurricane (Typhoon), NOAA's event type name | damage not reported | 0, 6 | Storm Events area SAIPAN (legacy zone code GUZ007), zone-level | deaths or injuries recorded | ||
| 2002-09-20 | Flood | $40,000 property; crops not reported, reported for the zone (2002 dollars) | 0, 0 | Storm Events area SAIPAN (legacy zone code GUZ007), zone-level | B1-c worst recorded: Flash Flood, Flood, Lakeshore Flood | ||
| 2002-09-15 | Flash Flood | $12,000 property; crops not reported (2002 dollars) | 0, 0 | COUNTYWIDE | large reported damage | ||
| 1997-10-18 | Hurricane (Typhoon), NOAA's event type name | $100,000 property; crops not reported, reported for the zone (1997 dollars) | 0, 3 | Storm Events area SAIPAN (legacy zone code GUZ007), zone-level | deaths or injuries recorded | ||
| 1997-08-12 | High Wind | speed not recorded | $300,000 property; crops not reported, reported for the zone (1997 dollars) | 0, 0 | Storm Events area SAIPAN (legacy zone code GUZ007), zone-level | B1-c most damaging: High Wind and Strong Wind |
The full list is in the Excel file, sheet "B1-d Storm Events history" (43 rows).
Location is the place NOAA recorded, as written in its data; it need not be a jurisdiction in this plan.
Local data needed: state-declared emergencies, from your state emergency management agency (federal data do not include them).
FEMA's declaration data list no tribal or special-area declarations for this state.
Supports FEMA checklist item B1-e: probability of future events
Probability: FEMA annualized frequency and descriptor per hazard
Sources: 5, 6
| Hazard | FEMA annualized frequency (modeled)unit per row | Unit | In plain terms | Descriptor | Descriptor basis | NRI events or days in its record period (hail, wind and tornado are area-weighted, so can be fractional) | NRI period | Location | Note |
|---|---|---|---|---|---|---|---|---|---|
| Coastal Flooding | 0.325 | events per year at a location (modeled) | about 0.33 per year at a given location in the county | Possible (from Storm Events: 1 of 30 years) | Storm Events records in 1 of 30 years, 1996 to 2025 (3.33%) | not shown | modeled | see B1-f | Descriptor from Storm Events, not NRI. |
| Cold Wave | 0 | event-days per year | none modeled | event-days in 0 of 30 years, 1996 to 2025 (0%) | 0 | 2005-11-12 to 2024-11-12 (19 years) | countywide | No Storm Events cold wave record, 1996 to 2025. Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. | |
| Drought | event-days per year | Likely (from Storm Events: 4 of 30 years) | event-days in 4 of 30 years, 1996 to 2025 (13.3%) | 2000 to 2025 (25.25 years; D3 and D4 only) | countywide | ||||
| Earthquake | 0.0402 | annual probability at a location | chance a given location in the county has at least minor-damage shaking in a year: 4.02% | not shown | modeled | see B1-f | No descriptor (Storm Events does not record earthquakes). | ||
| Hail | events per year | 1986 to 2023 (38 years) | countywide | NRI publishes no annualized frequency for this hazard in this county. | |||||
| Heat Wave | 0 | event-days per year | none modeled | event-days in 0 of 30 years, 1996 to 2025 (0%) | 0 | 2005-11-12 to 2024-11-12 (19 years) | countywide | No Storm Events heat wave record, 1996 to 2025. Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. | |
| Hurricane | 0.224 | events per year | about 1 in 4 years | Likely | FEMA annualized frequency (modeled) | 17 | 1949 to 2024 (Pacific) | see B1-f | NRI counts hurricane and tropical storm tracks passing within storm-force wind range; federal declarations are in B1-d. |
| Inland Flooding | 0.0714 | event-days per year | about 0.0714 days per year | Likely (from Storm Events: 4 of 30 years) | event-days in 4 of 30 years, 1996 to 2025 (13.3%) | 2 | 1996 to 2023 (28 years) | see B1-f | |
| Landslide | events per year (modeled) | not shown | modeled | see B1-f | NRI publishes no annualized frequency for this hazard in this county. | ||||
| Lightning | days per year with a strike | not shown | 1995 to 2023 (29 years; CONUS) | countywide | Descriptor not assigned: NRI publishes no lightning frequency for this county. | ||||
| Strong Wind | events per year | 1986 to 2023 (38 years) | countywide | NRI publishes no annualized frequency for this hazard in this county. | |||||
| Tornado | events per year | not shown | 1950 to 2023 (EF2+); 1986 to 2023 (EF0-1) | see B1-f | NRI publishes no annualized frequency for this hazard in this county. | ||||
| Tsunami | 0.122 | annual probability at the most exposed location (used in place of a county value) | chance at the county's most exposed location in a year: 12.2% | Storm Events records in 0 of 30 years, 1996 to 2025 (0%) | not shown | modeled | see B1-f | No descriptor: no Storm Events record 1996 to 2025. Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. | |
| Volcanic Activity | 0.0203 | annual probability | about 1 in 49 years | Possible | FEMA annualized frequency (modeled) | not shown | modeled | see B1-f | |
| Wildfire | annual probability at a location | Storm Events records in 0 of 30 years, 1996 to 2025 (0%) | not shown | modeled | see B1-f | No descriptor: no Storm Events record 1996 to 2025. Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. | |||
| Winter Weather | 0 | event-days per year | none modeled | event-days in 0 of 30 years, 1996 to 2025 (0%) | 0 | 2005-11-12 to 2024-11-12 (19 years) | countywide | No Storm Events winter weather record, 1996 to 2025. Storm Events files some records for the whole legacy area "NORTHERN MARIANAS" (for example Super Typhoon Yutu, 2018-10-24, whose eye crossed Tinian); those records are assigned to the Northern Islands Municipality, which has no page here, so they are counted on no page; a zero here means none placed, not that none occurred. |
FEMA annualized frequency (modeled) is the National Risk Index v1.20 (December 2025) estimate of how often a hazard affects this county in a year; it is not recorded events divided by years, and its unit differs by hazard (events, event-days, or days with a lightning strike per year). For earthquake, wildfire, coastal flooding and tsunami the value is the chance (or number of events) at a location in the county, not across the county, so no "1 in N years" is given and the descriptor comes from Storm Events where it has a record (none for earthquake). The Methods page gives each hazard's method, from FEMA's National Risk Index Technical Documentation v1.20.
Descriptor scale used in this packet (defined per unit)
Sources: 5, 6
| Unit | Descriptor | Definition |
|---|---|---|
| events per year | Highly likely | 1 or more per year |
| events per year | Likely | about once in 1 to 10 years |
| events per year | Possible | about once in 10 to 100 years |
| events per year | Unlikely | less than once in 100 years |
| annual probability | Likely | 10% to under 100% chance in a given year |
| annual probability | Possible | 1% to under 10% chance in a given year |
| annual probability | Unlikely | under 1% chance in a given year |
| event-days (share of years) | Highly likely | event-days recorded in 90% or more of years |
| event-days (share of years) | Likely | event-days recorded in 10% to under 90% of years |
| event-days (share of years) | Possible | event-days recorded in some years but under 10% of years |
| lightning strike-days | Highly likely | cloud-to-ground strikes on 1 or more days per year |
Intensity bands: historical frequency (Storm Events)
Source: 6
| Hazard | Band | Years | Eventscounty-coded records | Years in period | Events per yearevents / years |
|---|---|---|---|---|---|
| Hail | 1.00-1.99 in | 1996 to 2025 | 0 | 30 | 0 |
| Hail | 2.00 in+ | 1996 to 2025 | 0 | 30 | 0 |
| Thunderstorm Wind (counted as NRI Strong Wind) | 50-64 kt | 1996 to 2025 | 0 | 30 | 0 |
| Thunderstorm Wind (counted as NRI Strong Wind) | 65 kt+ | 1996 to 2025 | 0 | 30 | 0 |
| Thunderstorm Wind (counted as NRI Strong Wind) | unmeasured or below 50 kt | 1996 to 2025 | 0 | 30 | 0 |
| Tornado | EF0-1 | 1996 to 2025 | 0 | 30 | 0 |
| Tornado | EF2-3 | 1996 to 2025 | 0 | 30 | 0 |
| Tornado | EF4-5 | 1996 to 2025 | 0 | 30 | 0 |
| Tornado | unrated (EFU) | 1996 to 2025 | 0 | 30 | 0 |
The bands show how often events of each severity were recorded in this county, to profile how severe events have been (FEMA's probability item asks for the range of intensities).
Hail smaller than 1 inch is not counted: on 2010-01-05 the National Weather Service raised its severe-hail threshold from 3/4 inch to 1 inch, so smaller reports became less common after 2009 (NWS Service Change Notice 09-52). NRI hail frequency uses a 0.75 inch threshold.
Optional: future conditions. Not a required item in the 2025 FEMA Local Mitigation Planning Policy Guide; some states ask for it. The federal Climate Mapping for Resilience and Adaptation (CMRA) site gives county exposure to future climate conditions (https://resilience.climate.gov/).
Supports FEMA checklist item B1-f: hazards that vary across jurisdictions
Range of census tract risk within the county
Source: 5
| Hazard | Tractsrated of all | NRI risk score, 0 to 100 | Tracts by rating | ||
|---|---|---|---|---|---|
| Min | Median | Max | |||
| Coastal Flooding | 0 of 17 | Insufficient Data 17 | |||
| Cold Wave | 0 of 17 | Insufficient Data 17 | |||
| Drought | 0 of 17 | Insufficient Data 17 | |||
| Earthquake | 0 of 17 | Insufficient Data 17 | |||
| Hail | 0 of 17 | Insufficient Data 17 | |||
| Heat Wave | 0 of 17 | Insufficient Data 17 | |||
| Hurricane | 0 of 17 | Insufficient Data 17 | |||
| Inland Flooding | 0 of 17 | Insufficient Data 17 | |||
| Landslide | 0 of 17 | Insufficient Data 17 | |||
| Lightning | 0 of 17 | Insufficient Data 17 | |||
| Strong Wind | 0 of 17 | Insufficient Data 17 | |||
| Tornado | 0 of 17 | Insufficient Data 17 | |||
| Tsunami | 0 of 17 | Not Applicable 2, Insufficient Data 15 | |||
| Volcanic Activity | 0 of 17 | Insufficient Data 17 | |||
| Wildfire | 0 of 17 | Insufficient Data 17 | |||
| Winter Weather | 0 of 17 | Insufficient Data 17 | |||
Rated tracts only: No Rating (score 0.0), Not Applicable and Insufficient Data tracts are counted but not used for the minimum, median and maximum.
The score ranks a tract against all U.S. tracts (100 = highest). The rating is FEMA's category for the tract's risk value, computed differently, so the two can disagree.
Each jurisdiction (starting figures from federal data)
Sources: 1, 3, 4, 6
| Jurisdiction | Type | Plan status | Repetitive lossFMA RL and SRL (44 CFR 77.2); repeat-flood, any definition | Public Assistance to this jurisdictionFEMA records matched by applicant name; federal share obligated, nominal dollars | Event records naming this placeall years; since its plan | Notes |
|---|---|---|---|---|---|---|
| No rows for this unit. | ||||||
No city, town, township or county rows in FEMA plan data for this unit; same as county.
Supports FEMA checklist items B2-a and B2-b: vulnerability and potential impacts
Local data needed
The table below gives county-level starting figures; the plan describes impacts for each jurisdiction and its own assets.
- Critical facilities and lifelines per hazard
- A problem statement per jurisdiction per hazard
- Changes in development in hazard-prone areas since the last approval, or a statement of none (E1-a)
- Future assets
County-level starter: exposure, expected annual loss and damage since the plan
Sources: 1, 2, 3, 5, 6, 7
| Hazard | Building exposuremodeled dollars | Agriculture exposuremodeled dollars | Population exposedpeople | EAL buildingsmodeled dollars per year | EAL agriculturemodeled dollars per year | Cost of expected deaths and injuriesFEMA's dollar value per year, not property damage | EAL as % of exposurebuildings; agriculture where noted | Storm Events damage since 2024-07-28county-coded records, property plus crops, nominal dollars | Zone-level damage since planproperty plus crops, reported for the zone | Public Assistance since plannominal dollars; see note | Note |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Coastal Flooding | $1,173,701,995 | n/a | 4,671 | $46,746 | n/a | $138 | 0.00398% | ||||
| Cold Wave | $0 | $0 | 0 | $0 | $0 | $0 | building exposure is 0 in NRI | ||||
| Drought | n/a | n/a | n/a | n/a | n/a | n/a | $0 | NRI publishes no agriculture exposure for this county | |||
| Earthquake | $11,523,875,163 | n/a | 43,385 | $2,477,504 | n/a | $558,064 | 0.0215% | ||||
| Hail | n/a | n/a | n/a | n/a | n/a | n/a | NRI publishes no building exposure for this county | ||||
| Heat Wave | $0 | $0 | 0 | $0 | $0 | $0 | building exposure is 0 in NRI | ||||
| Hurricane | $6,272,944,989 | $852,870 | 43,385 | $20,152,990 | $8,590 | $1,449,178 | 0.321% | $0 | $499,697.02 | ||
| Inland Flooding | $0 | $7,126 | 4,700 | $0 | $6 | $9,775 | n/a (see note) | $0 | NRI counts the full building value of any census block with some flood loss; this is not the value of buildings in the floodplain. Use local FIRM overlays for B2-a/B2-b. | ||
| Landslide | n/a | n/a | n/a | n/a | n/a | n/a | NRI publishes no building exposure for this county | ||||
| Lightning | n/a | n/a | n/a | n/a | n/a | n/a | NRI publishes no building exposure for this county | ||||
| Strong Wind | n/a | n/a | n/a | n/a | n/a | n/a | $0 | NRI publishes no building exposure for this county | |||
| Tornado | n/a | n/a | n/a | n/a | n/a | n/a | NRI publishes no building exposure for this county | ||||
| Tsunami | $3,719,376,370 | n/a | 4,989 | $159,249 | n/a | $30,681,783 | 0.00428% | ||||
| Volcanic Activity | $6,272,944,989 | n/a | 43,385 | $5 | n/a | $2,088 | under 0.0001% | ||||
| Wildfire | n/a | n/a | n/a | n/a | n/a | n/a | NRI publishes no building exposure for this county | ||||
| Winter Weather | $0 | $0 | 0 | $0 | $0 | $0 | building exposure is 0 in NRI |
Totals since 2024-07-28 (Storm Events through 2026-06-30): 1 county-coded records, 1 with a damage value recorded (including $0), $0; 11 zone-level records, 9 with a damage value recorded (including $0), $0 reported for the zone; Public Assistance: $499,697.02 on 4 counted declarations, 1 of them with Public Assistance.
FEMA does not split Public Assistance by hazard. A declaration mapped to several hazards is listed under each of them with its full amount, so the per-hazard column does not add up to the total; the unit total counts each declaration once.
NRI computes earthquake exposure on its own basis, so it exceeds the county building value in B2-a.
Supports FEMA checklist item B2-a: vulnerability (county context)
County context
Source: 5
| Measure | Value |
|---|---|
| Population | 43,385 |
| Building value (total, not at risk) | $6,272,944,989 |
| Agriculture value (total, not at risk) | $852,870 |
| NRI risk rating (all hazards) | Insufficient Data |
| Expected annual loss, buildings and agriculture, all hazards | $22,845,089 |
| Expected annual loss, population equivalence, all hazards (NRI values each statistical life at $13.7M; a modeled value of expected deaths and injuries, not property damage) | $32,701,025 |
| Social vulnerability rating | Data Unavailable |
| Community resilience rating | Data Unavailable |
| NRI version | December 2025 |
FEMA's all-hazard expected annual loss adds buildings, agriculture and population equivalence; this table gives the property part and the population-equivalence part as separate rows.
Social vulnerability: higher means people are more likely to be harmed and slower to recover. Community resilience: lower means the community is less able to recover. High social vulnerability and low resilience both raise the NRI risk rating.
Supports FEMA checklist item B2-c: repetitive loss properties
Repetitive loss in this county, both definitions
Sources: 1, 4
| Definition | Properties | Severe repetitive loss | Properties |
|---|---|---|---|
| Repetitive loss, FMA definition (44 CFR 77.2) | 0 | Severe repetitive loss, FMA definition (44 CFR 77.2) | 0 |
| Repetitive loss, NFIP insurance definition | 0 | Severe repetitive loss, NFIP insurance definition | 0 |
The state NFIP coordinator's list, the source FEMA's Handbook names, often uses the NFIP insurance definition (second row).
Repeat-flood properties: county total and NFIP communities
Sources: 1, 4
| Scope | RL, FMAproperties | SRL, FMAproperties | RL, NFIPproperties | SRL, NFIPproperties | Any categoryproperties | Mitigatedproperties | Currently insuredproperties |
|---|---|---|---|---|---|---|---|
| County total | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
County repeat-flood properties by occupancy group: 0 in every occupancy group.
Sources: 1, 4
FMA RL and FMA SRL are the Flood Mitigation Assistance definitions (44 CFR 77.2), the ones the FEMA Local Mitigation Planning Policy Guide cites. NFIP repetitive loss (the FEMA insurance definition) is 2 or more claims over $1,000 in 10 years, and a property can leave that group once it is mitigated. Also shown: NFIP severe repetitive loss, any category, mitigated and currently insured. The Methods page gives the OpenFEMA field details.
Counts are aggregates of FEMA's public NFIP Multiple Loss Properties file (FEMA's data date 2026-08-02; file version 2026-08-04). No property is identified. County assignment is FEMA's geocode.
In this county 0 properties are FMA repetitive loss but not NFIP repetitive loss, and 0 properties are NFIP repetitive loss but not FMA repetitive loss.
Exact counts; no count suppression.
Sources
Tables cite these sources by number. The full list, for the plan's bibliography (FEMA review item A4-a):
- FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-29T134039Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)
- FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-29T162832Z, pulled 2026-09-30, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)
- FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-29T150754Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)
- FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/NfipMultipleLossProperties (API)
- FEMA, FEMA National Risk Index 1.20.0 (December 2025), county and census tract tables, version 1.20.0, pulled 2026-09-30, https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_Counties.zip (download, 25 MB), https://www.fema.gov/about/reports-and-data/openfema/nri/v120/NRI_Table_CensusTracts.zip (download, 635 MB)
- NOAA NCEI, NOAA NCEI Storm Events Database, details files (csvfiles v1.0), version c20260918, pulled 2026-09-30, https://www.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/
- NOAA National Weather Service, NWS county-public forecast zones correlation file, version bp03mr20 to bp16ap26 (11 files; newest bp16ap26), pulled 2026-09-30, https://www.weather.gov/gis/ZoneCounty
- U.S. Census Bureau, Census 2024 Gazetteer, 2020 place by county, CT county-to-cousub crosswalk, version 2024-gazetteer, pulled 2026-09-30, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_counties_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_cousubs_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_place_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_unsd_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_elsd_national.zip, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_Gaz_scsd_national.zip, https://www2.census.gov/geo/docs/reference/codes2020/national_place_by_county2020.txt, https://www2.census.gov/geo/docs/reference/ct_change/ct_cou_to_cousub_crosswalk.xlsx (used to match place names and codes; no table prints its values)
What this packet is and what the plan adds
This packet is the federal data for the plan's risk assessment, organized by the items of FEMA's Local Mitigation Plan Review Tool, Element B. Each section heading names the item its tables support; the plan and FEMA's review decide whether the item is met.
The plan adds what only the community has: local data on assets, critical facilities, development and each jurisdiction's impacts; local hazard history, including state-declared emergencies; the mitigation strategy; and adoption.
How the federal data are built: National Risk Index values are FEMA's model, not counts of events. Storm Events is more complete from 1996; zone-level records are placed by forecast zone, not by location in the county. Public Assistance for a jurisdiction is matched by applicant name. The Methods page gives every rule and the known edge cases.
OpenFEMA disclaimer
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Reuse, citation and corrections
Reuse and citation: Hazard Plain text and tables are licensed under Creative Commons Attribution 4.0 International (CC BY 4.0, https://creativecommons.org/licenses/by/4.0/); credit Hazard Plain and the release. The underlying federal data are public domain; OpenFEMA data are also subject to the OpenFEMA terms and conditions.
Cite this: Hazard Plain (2026). Saipan Municipality, MP: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 69110). Automated baseline. https://hazardplain.org/mp/69110/ Built from FEMA OpenFEMA, the FEMA National Risk Index and NOAA NCEI Storm Events; source versions in the packet's Sources list.
Corrections: to report an error, name the packet, the table and what your records show. Contact: [email protected]
Hazard Plain release 2026-10. As of 2026-09-30; Storm Events data through 2026-06-30. Automated baseline.