Hazard Plain Automated baseline

Sherman County, TX

Risk-assessment baseline packet

County FIPS:
48421
Release:
2026-10
Data as of:
2026-09-30
Storm Events data through:
2026-06-30

Hazard Plain is an independent product built from public federal data. It is not a FEMA document and is not reviewed or endorsed by FEMA or any state agency.

Hazard Plain release 2026-10, as of 2026-09-30.

Summary

Plan status as of 2026-09-30: Approved, expires 2030-09-09. Plan: Sherman County (FEMA plan 110552), approved 2025-09-10.

Since the plan was approved on 2025-09-10: no new hazard declaration and 13 NOAA Storm Events records; details under "What changed since your last plan".

Highest expected annual loss (FEMA National Risk Index, modeled total; see B1-a): Drought ($6,668,857 a year), Cold Wave ($2,807,329) and Hail ($271,807).

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 2030-09-09
Plan:
Sherman County (FEMA plan 110552)
Approved:
2025-09-10
Days to expiry:
1,440

What changed since your last plan (approved 2025-09-10)

New federal declarations:
none
Storm Events records since approval:
13 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

JurisdictionTypeStatusPlanApprovedExpiresDays to expirynegative = days since expiryNotes
Sherman CountyCountyApproved, expires 2030-09-09Sherman County (FEMA plan 110552)2025-09-102030-09-091,440
Stratford cityCityApproved, expires 2030-09-09Sherman County (FEMA plan 110552)2025-09-102030-09-091,440
Texhoma cityCityApproved, expires 2030-09-09Sherman County (FEMA plan 110552)2025-09-102030-09-091,440
Pringle-Morse Consolidated Independent School DistrictSchool/School DistrictApproved, expires 2030-12-01Hansford County (FEMA plan 110558)2025-12-022030-12-011,523
Stratford Independent School DistrictSchool/School DistrictApproved, expires 2030-09-09Sherman County (FEMA plan 110552)2025-09-102030-09-091,440
Sunray Collegiate Independent School DistrictSchool/School DistrictApproved, expires 2028-04-04Moore County (FEMA plan 107125)2023-04-052028-04-04552this jurisdiction approved 2024-02-14
Texhoma Independent School DistrictSchool/School DistrictApproved, expires 2030-09-09Sherman County (FEMA plan 110552)2025-09-102030-09-091,440

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 EALHazardNRI risk ratingEAL ratingEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearCost of expected deaths and injuriesFEMA's dollar value per year, not property damageEAL total (see note)modeled dollars per yearStorm Events records, 1996 to 2026-06-30countWhy this hazard can be left outNRI Not Applicable, no declaration and no Storm Events record since 1996Storm Events coverage note
1DroughtRelatively HighRelatively Highn/a$6,668,857n/a$6,668,85766
2Cold WaveRelatively ModerateRelatively Moderate$1,651$2,475,352$330,327$2,807,32923Includes 3 Frost/Freeze records (outside NRI's Cold Wave definition; counted in this table and in B1-d, not in the B1-e descriptor).
3HailRelatively LowRelatively Low$131,680$136,311$3,816$271,807146
4Inland FloodingVery LowVery Low$251,827$0$0$251,8273
5TornadoVery LowVery Low$99,316$22,880$108,286$230,48319
6WildfireRelatively LowRelatively Low$105,995$19,491$6,148$131,6349
7LightningRelatively LowRelatively Low$1,361n/a$107,054$108,4140No recorded events in Storm Events since 1996 (data through 2026-06-30).
8Winter WeatherRelatively LowRelatively Moderate$19,879$22,811$37,633$80,32370
9Strong WindVery LowVery Low$33,698$7,088$34,846$75,633135Includes 65 High Wind records (a NOAA non-thunderstorm wind type, outside NRI's Strong Wind definition).
10EarthquakeVery LowVery Low$18,691n/a$7,166$25,858Storm Events does not record earthquakes.
11Ice StormVery LowVery Low$16,748n/a$747$17,4953
12Heat WaveVery LowVery Low$2$540$6,051$6,5930No recorded events in Storm Events since 1996 (data through 2026-06-30).
13LandslideVery LowVery Lowunder $1n/aunder $1$10No recorded events in Storm Events since 1996 (data through 2026-06-30).
HurricaneNot ApplicableNot Applicable0NRI rates hurricane Not Applicable for this county, and no counted federal declaration for this county names it (DR-1239-TX, EM-3216-TX, EM-3261-TX, DR-1606-TX name it but are not counted as a local occurrence; see B1-d).No recorded events in Storm Events since 1996 (data through 2026-06-30).

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 lightning and landslide 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, coastal flooding, tsunami and volcanic activity. 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, Ice Storm, Lightning, Strong Wind and Winter Weather.

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.

NRI rating of the county's single census tract

Source: 5

HazardCensus tractNRI risk rating, score 0 to 100
Earthquaketract 9502 (Relatively Low, 49.5)
Hurricaneno tract has a National Risk Index rating for this hazard
Landslidetract 9502 (Very Low, 36.1)
Tornadotract 9502 (Relatively High, 81.4)
Wildfiretract 9502 (Relatively Moderate, 95.7)

A tract number is the Census tract number (for example 9502 is Census Tract 9502). 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

HazardScaleRecordscount and yearsObserved rangeWorst recorded eventMost damaging (when different)How it applies to jurisdictionsNote
Cold/Wind Chill, Extreme Cold/Wind Chillwind chill20 records, 2007 to 2022 (20 zone-level)1 day to 3 days (median 2 days); 13 with a recorded value3 consecutive days, 2014-12-29 to 2014-12-31, zone-levelCountywide (zone-level records).Cold/Wind Chill records from May to September (a frost night, not a cold wave) are counted but not used for the longest run.
Frost/Freeze (outside NRI's Cold Wave definition)crop damage3 records, 2017 to 2018 (3 zone-level)No crop damage reported in 3 records.Countywide (zone-level records).
DroughtU.S. Drought Monitor scale (D0 to D4)66 records, 1996 to 2026 (66 zone-level)43 days to 853 days (median 93.5 days); 10 with a recorded value853 days (28 months), 2012-10-01 to 2015-01-31, a run of 28 consecutive Storm Events drought records, zone-levelDrought, 2013-01-01, $0 property; $30,000,000 crops (zone total, 2013 dollars)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.
EarthquakeModified Mercalli (local data)0Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hailhail size (inches)195 records, 1959 to 20250.75 in to 3.6 in (median 1 in); 195 with a recorded value3.6 in hail, 2025-06-06Hail, 2008-08-14, $0 property; $18,000 crops (2008 dollars)Event records naming jurisdictions in the plan: Stratford city (52 records), Texhoma city (24 records).
Excessive Heat, Heatheat index (in event narratives)0
Hurricane, Tropical Storm, Tropical DepressionSaffir-Simpson0Storm 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.
Ice StormSperry-Piltz ice scale (local data)3 records, 2005 to 2015 (3 zone-level)Ice Storm, 2006-12-19, $18,000 property; $0 crops (2006 dollars); NWS zone TXZ002Countywide (zone-level records).
Flash Flood, Flood, Lakeshore Flooddamage and flood days (flood depth: FIRM)3 records, 2000 to 2024No damage reported in 3 records.Event records naming jurisdictions in the plan: Stratford city (1 record).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 Flownone (count and damage only)0
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)0Storm Events lists lightning with damage or casualties.
High Wind and Strong Wind (outside NRI's Strong Wind definition)wind speed (kt and mph)65 records, 1996 to 2026 (65 zone-level)35 kt (40 mph) to 78 kt (90 mph) (median 50 kt (58 mph)); 65 with a recorded value78 kt (90 mph) measured gust, High Wind, 2021-12-15; NWS zone TXZ002Countywide (zone-level records).
Thunderstorm Windwind speed (kt and mph)84 records, 1963 to 202650 kt (58 mph) to 103 kt (119 mph) (median 56 kt (64 mph)); 79 with a recorded value103 kt (119 mph) estimated gust, Thunderstorm Wind, 2017-06-20Thunderstorm Wind, 1996-07-22, $100,000 property; crops not reported (1996 dollars)Event records naming jurisdictions in the plan: Stratford city (12 records), Texhoma city (5 records).
TornadoEnhanced Fujita (Fujita before Feb 2007)40 records, 1955 to 2023F/EF0 to F/EF4 (median F/EF0); 36 with a recorded valueF4 tornado, 1971-06-09, 5.9 mi path length (whole path, pre-1996), 1,320 yd wide, damage not recorded (pre-1996 record)Tornado, 1987-07-07, $250,000 property; crops not recorded (1987 dollars)Event records naming jurisdictions in the plan: Stratford city (10 records), Texhoma city (2 records).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).
Wildfireacres burned (local data)9 records, 2008 to 2020 (9 zone-level)No damage reported in 9 records.Countywide (zone-level records).
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall: local data)70 records, 1996 to 2026 (70 zone-level)Blizzard, 2013-02-24, $660,000 property; $0 crops (2013 dollars); NWS zone TXZ002Countywide (zone-level records).

In event narratives only (local data needed): wind chill, temperature, heat index, ice thickness, acres burned and snow depth; any physical measure of debris flow and lightning.

Storm Events records are more complete after 1996; before 1996 only Tornado (from 1950), Hail and Thunderstorm Wind (from 1955) exist. Zone-level records from zones that 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: 12 declarations covering 5 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

DeclaredIncident beganFEMA numberTypeTitleMapped hazardCounty Public Assistancefederal share obligated, nominal dollarsNotes
2021-02-192021-02-11DR-4586-TXMajor disasterSevere Winter StormsIce Stormno Public Assistance recorded
2021-02-142021-02-11EM-3554-TXEmergencySevere Winter StormIce Stormno Public Assistance recordedsame incident as DR-4586
2020-03-252020-01-20DR-4485-TXMajor disasterCOVID-19 PandemicNon-natural, not countedno Public Assistance recorded
2020-03-132020-01-20EM-3458-TXEmergencyCOVID-19Non-natural, not countedno Public Assistance recordedsame incident as DR-4485
2008-03-142008-03-14EM-3284-TXEmergencyWildfiresWildfireno Public Assistance recorded
2006-01-112005-11-27DR-1624-TXMajor disasterExtreme Wildfire ThreatWildfire$2,456.50
2005-09-242005-09-23DR-1606-TXMajor disasterHurricane RitaHurricane: evacuation support (county designated for sheltering evacuees, no Individual Assistance), not a local hazard event; not countedno Public Assistance recorded
2005-09-212005-09-20EM-3261-TXEmergencyHurricane RitaHurricane: evacuation support (county designated for sheltering evacuees, no Individual Assistance), not a local hazard event; not countedno Public Assistance recordedsame incident as DR-1606
2005-09-022005-08-29EM-3216-TXEmergencyHurricane Katrina EvacuationHurricane: evacuation support, not a local hazard event; not countedno Public Assistance recorded
1999-09-011999-08-01EM-3142-TXEmergencyExtreme Fire HazardsWildfireno Public Assistance recorded
1998-08-261998-08-22DR-1239-TXMajor disasterTropical Storm CharleyHurricane; Inland Flooding: designated for Hazard Mitigation only (no Public or Individual Assistance for this county); not countedPA not declared for this county
1989-05-191989-05-04DR-828-TXMajor disasterSevere Storms, Tornadoes & FloodingInland Flooding; TornadoPA not declared for this county

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.

Statewide declarations

Source: 2

DeclaredIncident beganFEMA numberTypeTitleMapped hazard
1998-06-231998-06-04EM-3127-TXEmergencyFireWildfire
1963-09-241963-09-24DR-159-TXMajor disasterHurricane CindyHurricane (primary); also designated: Inland Flooding
1961-09-161961-09-16DR-118-TXMajor disasterHurricane CarlaHurricane (primary); also designated: Inland Flooding
1960-07-151960-07-15DR-103-TXMajor disasterHeavy Rains, Hail, Floods & TornadoesHail; Inland Flooding; Tornado
1959-07-081959-07-08DR-93-TXMajor disasterFloodsInland Flooding
1958-06-061958-06-06DR-85-TXMajor disasterTornadoes, Rain, Hail & FloodsTornado (primary); also designated: Hail, Inland Flooding
1957-04-291957-04-29DR-72-TXMajor disasterHurricane, Rain, Wind, Hail & FloodsHurricane (primary); also designated: Hail, Inland Flooding
1954-07-011954-07-01DR-18-TXMajor disasterFloodInland Flooding
1953-06-191953-06-19DR-9-TXMajor disasterFloodInland Flooding
1953-05-151953-05-15DR-2-TXMajor disasterTornado & Heavy RainfallTornado

FEMA recorded these with designated area Statewide and no county, so they are listed on every county page in the state and not counted with county rows. Local data needed: whether each one affected this county.

91 Fire Management declarations (1988-03-12 to 2009-04-10) FEMA filed as Statewide with no county; each names one local fire. Listed on the state page.

Public Assistance not placed in any Texas county: 1 row, $902,084.65; listed on the Texas state page.

Source: 3

Previous occurrences by hazard, with explicit no-event rows

Sources: 2, 6, 7

HazardStorm Events records, all years on file(years in the Period column)Since plan approvalrecordsIn the 12 months before plan approvalrecordsLast 5 yearsrecordsDeclared incidents, all yearsseparate disastersDeclared since approvalseparate disastersPeriodStatement
Cold Wave23001001996 to 2026-06-30Includes 3 Frost/Freeze records.
Drought664024001996 to 2026-06-30
Earthquake000000Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail1950217001955 to 2026-06-30
Heat Wave0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Hurricane0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Ice Storm3000101996 to 2026-06-30
Inland Flooding3001101996 to 2026-06-30
Landslide0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Lightning0000001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Strong Wind14971262001955 to 2026-06-30Includes 65 High Wind records.
Tornado40002101950 to 2026-06-30
Wildfire9000301996 to 2026-06-30
Winter Weather70238001996 to 2026-06-30

Notable Storm Events records

Sources: 1, 6, 7

DateEvent typeMagnitude or extentDamagenominal dollarsDeaths, injuriesdirect onlyLocationFlagsWhy listed
2025-06-06Hail3.6 in$10,000 property; $0 crops (2025 dollars)0, 0TEXHOMAin the 12 months before plan approval; within last 5 yearsB1-c worst recorded: Hail
2021-12-15High Wind78 kt (90 mph) measured gustdamage not reported0, 0NWS zone TXZ002 (SHERMAN), zone-levelwithin last 5 yearsB1-c worst recorded: High Wind and Strong Wind
2017-06-20Thunderstorm Wind103 kt (119 mph) estimated gust$0 property; $0 crops (2017 dollars)0, 0LAUTZB1-c worst recorded: Thunderstorm Wind
2014-12-29Cold/Wind Chill$0 property; $0 crops (zone total, 2014 dollars)0, 0NWS zone TXZ002 (SHERMAN), zone-levelB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2013-02-24Blizzard$660,000 property; $0 crops (zone total, 2013 dollars)0, 0NWS zone TXZ002 (SHERMAN), zone-levelB1-c worst recorded: Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet
2013-01-01Drought$0 property; $30,000,000 crops (zone total, 2013 dollars)0, 0NWS zone TXZ002 (SHERMAN), zone-levelB1-c most damaging: Drought
2012-10-01Drought$0 property; $6,000,000 crops (zone total, 2012 dollars)0, 0NWS zone TXZ002 (SHERMAN), zone-levelB1-c worst recorded: Drought
2008-08-14Hail1.75 in$0 property; $18,000 crops (2008 dollars)0, 0STRATFORDB1-c most damaging: Hail
2006-12-19Ice Storm$18,000 property; $0 crops (zone total, 2006 dollars)0, 0NWS zone TXZ002 (SHERMAN), zone-levelB1-c worst recorded: Ice Storm
1996-07-22Thunderstorm Wind52 kt (60 mph), measurement type not recorded$100,000 property; crops not reported (1996 dollars)0, 0TEXHOMAB1-c most damaging: Thunderstorm Wind
1987-07-07TornadoF1, 0.5 mi path length (whole path, pre-1996), 40 yd wide$250,000 property; crops not recorded (1987 dollars)0, 0location not recordedB1-c most damaging: Tornado
1971-06-09TornadoF4, 5.9 mi path length (whole path, pre-1996), 1,320 yd widedamage not recorded (pre-1996 record)0, 0location not recordedB1-c worst recorded: Tornado

The full list is in the Excel file, sheet "B1-d Storm Events history" (558 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).

Tribal and special-area declarations in this state are listed on the state page.

Supports FEMA checklist item B1-e: probability of future events

Probability: FEMA annualized frequency and descriptor per hazard

Sources: 5, 6

HazardFEMA annualized frequency (modeled)unit per rowUnitIn plain termsDescriptorDescriptor basisNRI events or days in its record period (hail, wind and tornado are area-weighted, so can be fractional)NRI periodLocationNote
Cold Wave2.95event-days per yearabout 2.95 days per yearLikelyStorm Events event-days in 7 of 30 years, 1996 to 2025 (23.3%)562005-11-12 to 2024-11-12 (19 years)countywide
Drought124event-days per yearabout 124 days per yearLikelyStorm Events event-days in 13 of 30 years, 1996 to 2025 (43.3%)3,1292000 to 2025 (25.25 years; D3 and D4 only)countywide
Earthquake0.000833annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.0833%not shownmodeledsee B1-fNo descriptor (Storm Events does not record earthquakes).
Hail6.21events per yearabout 6.21 per yearHighly likelyFEMA annualized frequency (modeled)236.1 (modeled)1986 to 2023 (38 years)countywide
Heat Wave1.05event-days per yearabout 1.05 days per yearStorm Events event-days in 0 of 30 years, 1996 to 2025 (0%)162005-11-12 to 2024-11-12 (19 years)countywideNo Storm Events heat wave record, 1996 to 2025
Hurricaneevents per year1851 to 2024 (Atlantic)see B1-fNot Applicable in NRI for this county; no descriptor.
Ice Storm0.203event-days per yearabout 0.203 days per yearLikelyStorm Events event-days in 3 of 30 years, 1996 to 2025 (10%)141946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding0.0714event-days per yearabout 0.0714 days per yearLikelyStorm Events event-days in 3 of 30 years, 1996 to 2025 (10%)21996 to 2023 (28 years)see B1-f
Landslide0.103events per year (modeled)about 1 in 10 yearsLikelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning44.8days per year with a strikeabout 44.8 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind2.64events per yearabout 2.64 per yearHighly likelyFEMA annualized frequency (modeled)1011986 to 2023 (38 years)countywide
Tornado0.576events per yearabout 0.58 per yearLikelyFEMA annualized frequency (modeled)not shown1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)see B1-f
Wildfire0.00508annual probability at a locationchance a given location in the county burns in a year: 0.508%LikelyStorm Events records in 5 of 30 years, 1996 to 2025 (16.7%)not shownmodeledsee B1-f
Winter Weather11.3event-days per yearabout 11.3 days per yearLikelyStorm Events event-days in 25 of 30 years, 1996 to 2025 (83.3%)2142005-11-12 to 2024-11-12 (19 years)countywide

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.

Where NRI gives event-days, the descriptor comes from the share of years with a Storm Events record; NRI's source records more events, so the two differ.

Descriptor scale used in this packet (defined per unit)

Sources: 5, 6

UnitDescriptorDefinition
events per yearHighly likely1 or more per year
events per yearLikelyabout once in 1 to 10 years
events per yearPossibleabout once in 10 to 100 years
events per yearUnlikelyless than once in 100 years
annual probabilityLikely10% to under 100% chance in a given year
annual probabilityPossible1% to under 10% chance in a given year
annual probabilityUnlikelyunder 1% chance in a given year
event-days (share of years)Highly likelyevent-days recorded in 90% or more of years
event-days (share of years)Likelyevent-days recorded in 10% to under 90% of years
event-days (share of years)Possibleevent-days recorded in some years but under 10% of years
lightning strike-daysHighly likelycloud-to-ground strikes on 1 or more days per year

Intensity bands: historical frequency (Storm Events)

Source: 6

HazardBandYearsEventscounty-coded recordsYears in periodEvents per yearevents / years
Hail1.00-1.99 in1996 to 202592303.07
Hail2.00 in+1996 to 202516300.533
Thunderstorm Wind (counted as NRI Strong Wind)50-64 kt1996 to 202559301.97
Thunderstorm Wind (counted as NRI Strong Wind)65 kt+1996 to 20256300.2
Thunderstorm Wind (counted as NRI Strong Wind)unmeasured or below 50 kt1996 to 20250300
TornadoEF0-11996 to 202516300.533
TornadoEF2-31996 to 20250300
TornadoEF4-51996 to 20250300
Tornadounrated (EFU)1996 to 20253300.1

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

NRI risk score of the county's single census tract

Source: 5

HazardTract scoreNRI score, 0 to 100Rating
Cold Wave99.9Very High
Drought99.9Very High
Earthquake49.5Relatively Low
Hail98.0Relatively High
Heat Wave9.3Very Low
HurricaneNot Applicable
Ice Storm83.7Relatively Moderate
Inland Flooding17.4Relatively Low
Landslide36.1Very Low
Lightning98.9Very High
Strong Wind88.6Relatively High
Tornado81.4Relatively High
Wildfire95.7Relatively Moderate
Winter Weather99.5Very High

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

JurisdictionTypePlan statusRepetitive lossFMA RL and SRL (44 CFR 77.2); repeat-flood, any definitionPublic Assistance to this jurisdictionFEMA records matched by applicant name; federal share obligated, nominal dollarsEvent records naming this placeall years; since its plan
Sherman CountyCountyApproved, expires 2030-09-09FMA RL 0, SRL 0; any 0$2,456.500 total; 0 since its plan
Stratford cityCityApproved, expires 2030-09-09FMA RL 0, SRL 0; any 0no Public Assistance recorded75 total; 0 since its plan
Texhoma cityCityApproved, expires 2030-09-09FMA RL 0, SRL 0; any 0no Public Assistance recorded31 total; 0 since its plan

Repetitive-loss counts are for whole NFIP communities, which can extend beyond this county (see the note in B2-c).

School districts and special districts get a plan clock row only.

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
  • Texas A&M Forest Service TxWRAP for wildfire risk; Texas State Hazard Mitigation Plan hazard list for B1-a exclusions.

County-level starter: exposure, expected annual loss and damage since the plan

Sources: 1, 2, 3, 5, 6, 7

HazardBuilding exposuremodeled dollarsAgriculture exposuremodeled dollarsPopulation exposedpeopleEAL buildingsmodeled dollars per yearEAL agriculturemodeled dollars per yearCost of expected deaths and injuriesFEMA's dollar value per year, not property damageEAL as % of exposurebuildings; agriculture where notedStorm Events damage since 2025-09-10county-coded records, property plus crops, nominal dollarsZone-level damage since planproperty plus crops, reported for the zonePublic Assistance since plannominal dollars; see noteNote
Cold Wave$799,617,955$1,079,075,4332,781$1,651$2,475,352$330,3270.000206%
Droughtn/a$90,770,337n/an/a$6,668,857n/a7.35% (agriculture)$0NRI has no building exposure for this hazard; agriculture shown
Earthquake$1,411,475,526n/a2,782$18,691n/a$7,1660.00132%
Hail$799,617,955$1,079,075,4332,781$131,680$136,311$3,8160.0165%
Heat Wave$799,617,955$1,079,075,4332,781$2$540$6,051under 0.0001%
HurricaneNot Applicable in NRI for this county
Ice Storm$799,617,955n/a2,781$16,748n/a$7470.00209%
Inland Flooding$799,568,322$00$251,827$0$0n/a (see note)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$404,942n/a1under $1n/aunder $1under 0.0001%
Lightning$799,617,955n/a2,781$1,361n/a$107,0540.00017%
Strong Wind$799,617,955$1,079,075,4332,781$33,698$7,088$34,8460.00421%$0$0
Tornado$799,617,955$1,079,075,4332,781$99,316$22,880$108,2860.0124%
Wildfire$168,217,875$402,986,640693$105,995$19,491$6,1480.063%
Winter Weather$799,617,955$1,079,075,4332,781$19,879$22,811$37,6330.00249%$0

Totals since 2025-09-10 (Storm Events through 2026-06-30): 5 county-coded records, 5 with a damage value recorded (including $0), $0; 8 zone-level records, 5 with a damage value recorded (including $0), $0 reported for the zone; Public Assistance: no counted declaration since the plan.

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

MeasureValue
Population2,781
Building value (total, not at risk)$799,617,955
Agriculture value (total, not at risk)$1,079,075,433
NRI risk rating (all hazards)Very Low
Expected annual loss, buildings and agriculture, all hazards$10,034,179
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)$642,075
Social vulnerability ratingRelatively Low
Community resilience ratingVery Low
NRI versionDecember 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

DefinitionPropertiesSevere repetitive lossProperties
Repetitive loss, FMA definition (44 CFR 77.2)0Severe repetitive loss, FMA definition (44 CFR 77.2)0
Repetitive loss, NFIP insurance definition0Severe repetitive loss, NFIP insurance definition0

The state NFIP coordinator's list, the source FEMA's Handbook names, often uses the NFIP insurance definition (second row).

Repeat-flood properties: county and state-level rows

Sources: 1, 4

ScopeRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
County total0000000
Statewide, no county in FEMA's file381271319

The statewide row counts properties FEMA's file gives with no county in this state; they are listed for reference and are not in this county's counts.

Repeat-flood properties by jurisdiction in the plan (NFIP community)

Sources: 1, 4

JurisdictionNFIP community IDRL, FMApropertiesSRL, FMApropertiesRL, NFIPpropertiesSRL, NFIPpropertiesAny categorypropertiesMitigatedpropertiesCurrently insuredproperties
Sherman County4810080000000
Stratford city4810090000000
Texhoma city4811280000000

Counts by occupancy group for each jurisdiction are in the Excel file, sheet "B2-c Jurisdictions".

Jurisdiction rows are whole NFIP communities and need not add up to the county total: a community that extends into another county is counted in full on each jurisdiction row, while the county table counts only its part in this county.

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):

  1. FEMA, OpenFEMA HazardMitigationPlanStatuses v1, version 2026-09-29T134039Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/HazardMitigationPlanStatuses (API)
  2. FEMA, OpenFEMA DisasterDeclarationsSummaries v2, version 2026-09-29T162832Z, pulled 2026-09-30, https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries (API)
  3. FEMA, OpenFEMA PublicAssistanceFundedProjectsSummaries v1, version 2026-09-29T150754Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/PublicAssistanceFundedProjectsSummaries (API)
  4. FEMA, OpenFEMA NfipMultipleLossProperties v1, version 2026-08-04T164045Z, pulled 2026-09-30, https://www.fema.gov/api/open/v1/NfipMultipleLossProperties (API)
  5. 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)
  6. 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/
  7. 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
  8. 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 (the summary on page 1 says how it is organized); the plan and FEMA's review decide whether each 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). Sherman County, TX: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 48421). Automated baseline. https://hazardplain.org/tx/48421/ 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]