Hazard Plain Automated baseline

Carson County, TX

Risk-assessment baseline packet

County FIPS:
48065
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: No approved plan on record.

Update: FEMA tracker shows a plan in review.

Highest expected annual loss (FEMA National Risk Index, modeled total; see B1-a): Drought ($5,897,004 a year), Tornado ($1,208,858) and Hail ($1,177,441).

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:
No approved plan on record
Plan:
none
Approved:
none
Expires:
none
Update underway:
FEMA tracker shows a plan in review

FEMA's plan status data lists no approved plan for this jurisdiction.

What changed since your last plan

Not available. No approved plan on record, so there is no approval date to count from.

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 expiryUpdate underway
Carson CountyCountyNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review
Groom townTownNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review
Panhandle townTownNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review
Skellytown townTownNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review
White Deer townCityNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review
Groom Independent School DistrictSchool/School DistrictNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review
Panhandle Independent School DistrictSchool/School DistrictNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review
White Deer Independent School DistrictSchool/School DistrictNo approved plan on recordnonenonenoneFEMA tracker shows a plan in review

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 2026-06-30countStorm Events coverage note
1DroughtRelatively HighRelatively Highn/a$5,897,004n/a$5,897,00469
2TornadoRelatively LowRelatively Low$608,372$3,923$596,563$1,208,85840
3HailRelatively ModerateRelatively Moderate$930,291$227,556$19,594$1,177,441473
4WildfireRelatively LowRelatively Moderate$1,089,897$1,876$55,181$1,146,95442
5Inland FloodingVery LowVery Low$757,811$7$3,432$761,25025
6Cold WaveRelatively LowRelatively Low$3,607$227,722$280,175$511,50422Includes 3 Frost/Freeze records (outside NRI's Cold Wave definition; counted in this table and in B1-d, not in the B1-e descriptor).
7Strong WindRelatively LowRelatively Low$159,504$13,772$293,571$466,847215Includes 62 High Wind records (a NOAA non-thunderstorm wind type, outside NRI's Strong Wind definition).
8Winter WeatherRelatively LowRelatively Moderate$55,361$74$68,126$123,56161Includes 1 Sleet record (outside NRI's Winter Weather definition).
9EarthquakeVery LowVery Low$51,374n/a$8,957$60,331Storm Events does not record earthquakes.
10LightningVery LowVery Low$8,935n/a$48,789$57,7231
11Ice StormRelatively LowRelatively Low$39,716n/a$3,269$42,9853
12Heat WaveVery LowVery Low$4$348$25,743$26,0940No recorded events in Storm Events since 1996 (data through 2026-06-30).
13LandslideVery LowVery Low$2n/a$1$20No recorded events in Storm Events since 1996 (data through 2026-06-30).
14HurricaneNo RatingNo Expected Annual Losses$0$0$0$00No 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 landslide records (Storm Events records this hazard 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.

Hazards that vary within the county: highest-rated census tracts

Source: 5

HazardHighest-rated census tractsNRI risk rating, score 0 to 100
Earthquaketract 9501 (Relatively Low, 50.7); tract 9502 (Relatively Low, 50.2)
Hurricaneno tract has a National Risk Index rating for this hazard
Landslidetract 9502 (Very Low, 41.7); tract 9501 (Very Low, 36.8)
Tornadotract 9502 (Very High, 97.3); tract 9501 (Very High, 96.7)
Wildfiretract 9502 (Relatively High, 98.5); tract 9501 (Relatively High, 97.9)

Up to 3 census tracts per hazard, highest National Risk Index rating first, then highest score; a tract number is the Census tract number (for example 9501 is Census Tract 9501). 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 chill19 records, 2007 to 2021 (19 zone-level)1 day to 3 days (median 2 days); 12 with a recorded value3 consecutive days, 2014-12-29 to 2014-12-31, zone-levelCountywide (zone-level records).Wind chill: in event narratives only (local data needed). 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).Temperature: in event narratives only (local data needed).
DroughtU.S. Drought Monitor scale (D0 to D4)69 records, 1996 to 2026 (69 zone-level)12 days to 671 days (median 92 days); 15 with a recorded value671 days (22 months), 2013-04-01 to 2015-01-31, a run of 22 consecutive Storm Events drought records, zone-levelDrought, 2012-11-01, $0 property; $30,000,000 crops, reported for the zone (2012 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)617 records, 1958 to 20250.75 in to 4.5 in (median 1 in); 617 with a recorded value4.5 in hail, 2007-03-28; same size also recorded on 1983-06-04, 1995-07-02Hail, 2008-06-19, $500,000 property; $0 crops (2008 dollars)Event records naming jurisdictions in the plan: Panhandle town (146 records), White Deer town (91 records), Skellytown town (58 records), Groom town (57 records).
Excessive Heat, Heatheat index (in event narratives)0Heat index: in event narratives only (local data needed).
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, 2006 to 2020 (3 zone-level)Ice Storm, 2006-12-19, $13,000 property; $0 crops (2006 dollars); NWS zone TXZ013Countywide (zone-level records).Ice thickness: in event narratives only (local data needed).
Flash Flood, Flood, Lakeshore Flooddamage and flood days (flood depth: FIRM)25 records, 2000 to 2025Flash Flood, 2025-06-26, $1,000 property; $0 crops (2025 dollars)Event records naming jurisdictions in the plan: Panhandle town (17 records), White Deer town (3 records), Skellytown town (2 records).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)0Physical measure: in event narratives only (local data needed).
Lightningannualized frequency (the measure FEMA's Local Mitigation Planning Handbook names)1 record, 1999Lightning, 1999-06-02, $125,000 property; crops not reported (1999 dollars)Event records naming jurisdictions in the plan: White Deer town (1 record).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)62 records, 1996 to 2026 (62 zone-level)35 kt (40 mph) to 70 kt (81 mph) (median 52 kt (60 mph)); 62 with a recorded value70 kt (81 mph) measured gust, High Wind, 2025-03-14; NWS zone TXZ013High Wind, 2014-04-29, $20,000 property; $0 crops, reported for the zone (2014 dollars)Countywide (zone-level records).
Thunderstorm Windwind speed (kt and mph)172 records, 1959 to 202650 kt (58 mph) to 87 kt (100 mph) (median 56 kt (64 mph)); 168 with a recorded value87 kt (100 mph), measurement type not recorded, Thunderstorm Wind, 1989-05-04Thunderstorm Wind, 2000-03-07, $150,000 property; crops not reported (2000 dollars)Event records naming jurisdictions in the plan: Panhandle town (49 records), White Deer town (24 records), Groom town (21 records), Skellytown town (11 records).
TornadoEnhanced Fujita (Fujita before Feb 2007)92 records, 1951 to 2025F/EF0 to F/EF4 (median F/EF0); 88 with a recorded valueF4 tornado, 1992-06-27, 5 mi path length (whole path, pre-1996), 1,583 yd wide, $25,000,000 property; crops not recorded (1992 dollars)Event records naming jurisdictions in the plan: Panhandle town (17 records), White Deer town (7 records), Groom town (5 records), Skellytown town (3 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)42 records, 2006 to 2026 (42 zone-level)Wildfire, 2006-03-12, $30,000,000 property; $27,200,000 crops (2006 dollars); NWS zone TXZ013Countywide (zone-level records).Acres burned: in event narratives only (local data needed).
Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleetnone in data (snowfall: local data)61 records, 1996 to 2026 (61 zone-level)Blizzard, 2013-02-24, $660,000 property; $0 crops (2013 dollars); NWS zone TXZ013Countywide (zone-level records).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: 15 declarations covering 8 separate hazard incidents counted in this packet (declarations for the same incident count once; non-natural and evacuation-only declarations are not counted).

No approved plan on record, so there is no approval date to count from.

Federal disaster declarations for this county

Sources: 1, 2, 3

DeclaredIncident beganFEMA numberTypeTitleMapped hazardCounty Public Assistancefederal share obligated, nominal dollarsFlagsNotes
2021-12-152021-12-15FM-5422-TXFire managementNorth 207 FireWildfireno Public Assistance recordedwithin last 5 years
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
2011-07-012011-04-06DR-1999-TXMajor disasterWildfiresWildfire$34,948.25
2008-03-142008-03-14EM-3284-TXEmergencyWildfiresWildfireno Public Assistance recorded
2006-01-112005-11-27DR-1624-TXMajor disasterExtreme Wildfire ThreatWildfire$55,243.44
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
2001-01-082000-12-12DR-1356-TXMajor disasterSevere Winter Ice StormIce Storm$33,008.09
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
1992-07-021992-06-27DR-949-TXMajor disasterSevere Storms & TornadoesTornadoPA 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 Wave22001996 to 2026-06-30Includes 3 Frost/Freeze records.
Drought692501996 to 2026-06-30
Earthquake000Storm Events does not record earthquakes; the USGS earthquake catalog is the source.
Hail6173101955 to 2026-06-30
Heat Wave0001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Hurricane0001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Ice Storm3021996 to 2026-06-30
Inland Flooding25201996 to 2026-06-30
Landslide0001996 to 2026-06-30No recorded events, 1996 to 2026-06-30, NOAA NCEI Storm Events
Lightning1001996 to 2026-06-30
Strong Wind2345901955 to 2026-06-30Includes 62 High Wind records.
Tornado92211950 to 2026-06-30
Wildfire421151996 to 2026-06-30
Winter Weather61601996 to 2026-06-30Includes 1 Sleet record.

Notable Storm Events records

Sources: 1, 6, 7

DateEvent typeMagnitude or extentDamagenominal dollarsDeaths, injuriesdirect onlyLocationFlagsWhy listed
2025-06-26Flash Flood$1,000 property; $0 crops (2025 dollars)0, 0PANHANDLEwithin last 5 yearsB1-c worst recorded: Flash Flood, Flood, Lakeshore Flood
2025-03-14High Wind70 kt (81 mph) measured gustdamage not reported0, 0NWS zone TXZ013 (CARSON), zone-levelwithin last 5 yearsB1-c worst recorded: High Wind and Strong Wind
2014-12-29Cold/Wind Chill$0 property; $0 crops, reported for the zone (2014 dollars)0, 0NWS zone TXZ013 (CARSON), zone-levelB1-c worst recorded: Cold/Wind Chill, Extreme Cold/Wind Chill
2013-04-01Drought$0 property; $5,000,000 crops, reported for the zone (2013 dollars)0, 0NWS zone TXZ013 (CARSON), zone-levelB1-c worst recorded: Drought
2013-02-24Blizzard$660,000 property; $0 crops, reported for the zone (2013 dollars)0, 0NWS zone TXZ013 (CARSON), zone-levelB1-c worst recorded: Winter Storm, Heavy Snow, Blizzard, Lake-Effect Snow, Winter Weather, Sleet
2007-03-28Hail4.5 indamage not reported0, 0PANTEXB1-c worst recorded: Hail
2006-03-12Wildfire$30,000,000 property; $27,200,000 crops, reported for the zone (2006 dollars)0, 0NWS zone TXZ013 (CARSON), zone-levelB1-c worst recorded: Wildfire
2005-12-18Winter Weather$21,000 property; crops not reported, reported for the zone (2005 dollars)1, 1NWS zone TXZ013 (CARSON), zone-leveldeaths or injuries recorded
1998-07-12Thunderstorm Wind65 kt (75 mph), measurement type not recordeddamage not reported0, 4CONWAYdeaths or injuries recorded
1992-06-27TornadoF4, 5 mi path length (whole path, pre-1996), 1,583 yd wide$25,000,000 property; crops not recorded (1992 dollars)0, 0location not recordedB1-c worst recorded: Tornado
1989-05-04Thunderstorm Wind87 kt (100 mph), measurement type not recordeddamage not recorded (pre-1996 record)0, 0location not recordedB1-c worst recorded: Thunderstorm Wind
1951-06-06TornadoF3, 10.4 mi path length (whole path, pre-1996), 100 yd wide$250,000 property; crops not recorded (1951 dollars)0, 12location not recordeddeaths or injuries recorded

The full list is in the Excel file, sheet "B1-d Storm Events history" (1,166 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 Wave2.47event-days per yearabout 2.47 days per yearLikely (from Storm Events: 6 of 30 years)event-days in 6 of 30 years, 1996 to 2025 (20%)472005-11-12 to 2024-11-12 (19 years)countywide
Drought83.2event-days per yearabout 83.2 days per yearLikely (from Storm Events: 13 of 30 years)event-days in 13 of 30 years, 1996 to 2025 (43.3%)2,3312000 to 2025 (25.25 years; D3 and D4 only)countywide
Earthquake0.00105annual probability at a locationchance a given location in the county has at least minor-damage shaking in a year: 0.105%not shownmodeledsee B1-fNo descriptor (Storm Events does not record earthquakes).
Hail9.18events per yearabout 9.18 per yearHighly likelyFEMA annualized frequency (modeled)348.8 (modeled)1986 to 2023 (38 years)countywide
Heat Wave1.68event-days per yearabout 1.68 days per yearevent-days in 0 of 30 years, 1996 to 2025 (0%)262005-11-12 to 2024-11-12 (19 years)countywideNo Storm Events heat wave record, 1996 to 2025
Hurricane0events per yearnone modeledUnlikelyFEMA annualized frequency (modeled)01851 to 2024 (Atlantic)see B1-fNRI counts hurricane and tropical storm tracks passing within storm-force wind range; federal declarations are in B1-d.
Ice Storm0.392event-days per yearabout 0.392 days per yearLikely (from Storm Events: 3 of 30 years)event-days in 3 of 30 years, 1996 to 2025 (10%)271946-12-31 to 2014-02-12 (67 years)countywide
Inland Flooding0.536event-days per yearabout 0.536 days per yearLikely (from Storm Events: 11 of 30 years)event-days in 11 of 30 years, 1996 to 2025 (36.7%)151996 to 2023 (28 years)see B1-f
Landslide0.128events per year (modeled)about 1 in 8 yearsLikelyFEMA annualized frequency (modeled)not shownmodeledsee B1-f
Lightning49.1days per year with a strikeabout 49.1 days per yearHighly likelyFEMA annualized frequency (modeled)not shown1995 to 2023 (29 years; CONUS)countywide
Strong Wind3.45events per yearabout 3.45 per yearHighly likelyFEMA annualized frequency (modeled)1321986 to 2023 (38 years)countywide
Tornado0.885events per yearabout 0.88 per yearLikelyFEMA annualized frequency (modeled)not shown1950 to 2023 (EF2+); 1986 to 2023 (EF0-1)see B1-f
Wildfire0.00684annual probability at a locationchance a given location in the county burns in a year: 0.684%Likely (from Storm Events: 17 of 30 years)Storm Events records in 17 of 30 years, 1996 to 2025 (56.7%)not shownmodeledsee B1-fDescriptor from Storm Events, not NRI.
Winter Weather10.4event-days per yearabout 10.4 days per yearLikely (from Storm Events: 23 of 30 years)event-days in 23 of 30 years, 1996 to 2025 (76.7%)1972005-11-12 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 2025277309.23
Hail2.00 in+1996 to 202549301.63
Thunderstorm Wind (counted as NRI Strong Wind)50-64 kt1996 to 2025126304.2
Thunderstorm Wind (counted as NRI Strong Wind)65 kt+1996 to 202523300.767
Thunderstorm Wind (counted as NRI Strong Wind)unmeasured or below 50 kt1996 to 20250300
TornadoEF0-11996 to 202533301.1
TornadoEF2-31996 to 20254300.133
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

Range of census tract risk within the county

Source: 5

HazardTractsrated of allNRI risk score, 0 to 100Tracts by rating
MinMedianMax
Cold Wave2 of 286.687.387.9Relatively High 2
Drought2 of 299.899.899.8Very High 2
Earthquake2 of 250.250.450.7Relatively Low 2
Hail2 of 299.399.499.4Very High 2
Heat Wave2 of 215.718.020.3Relatively Low 1, Very Low 1
Hurricane0 of 2No Rating 2
Ice Storm2 of 284.585.386.0Relatively Moderate 2
Inland Flooding2 of 225.428.631.9Relatively Low 2
Landslide2 of 236.839.341.7Very Low 2
Lightning2 of 276.279.081.7Relatively High 1, Relatively Moderate 1
Strong Wind2 of 297.798.098.2Very High 2
Tornado2 of 296.797.097.3Very High 2
Wildfire2 of 297.998.298.5Relatively High 2
Winter Weather2 of 298.898.999.0Very High 2

Drought: Agriculture is all of NRI's expected annual loss for this hazard in the county, so the tract range mostly reflects where crop and livestock value is.

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.

Frequency data for cold wave, drought, hail, heat wave, ice storm, lightning, strong wind and winter weather are county-wide or coarse (49 km grid or NWS zone), the same for every jurisdiction; the tract range mostly reflects where buildings and people are (crop and livestock value where a line above names agriculture).

This county has 2 census tracts; the minimum, median and maximum come from those 2.

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
Carson CountyCountyNo approved plan on recordFMA RL 0, SRL 0; any 0$111,247.710 total; no approved plan
Groom townTownNo approved plan on recordFMA RL 0, SRL 0; any 0$1,072.3983 total; no approved plan
Panhandle townTownNo approved plan on recordFMA RL 0, SRL 0; any 0$8,960.11229 total; no approved plan
Skellytown townTownNo approved plan on recordFMA RL 0, SRL 0; any 0$1,028.8274 total; no approved plan
White Deer townCityNo approved plan on recordFMA RL 0, SRL 0; any 0$890.75126 total; no approved 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.

No approved plan on record, so there is no approval date to count from.

  • 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 plancounty-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$2,082,223,219$118,279,2495,799$3,607$227,722$280,1750.000173%
Droughtn/a$68,221,550n/an/a$5,897,004n/a8.64% (agriculture)NRI has no building exposure for this hazard; agriculture shown
Earthquake$3,619,785,538n/a5,807$51,374n/a$8,9570.00142%
Hail$2,082,223,627$118,279,2495,799$930,291$227,556$19,5940.0447%
Heat Wave$2,082,223,219$118,279,2495,799$4$348$25,743under 0.0001%
Hurricane$2,082,223,627$118,279,2495,799$0$0$00%
Ice Storm$2,081,963,346n/a5,799$39,716n/a$3,2690.00191%
Inland Flooding$2,079,681,152$94396$757,811$7$3,432n/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$1,281,416n/a2$2n/a$10.000121%
Lightning$2,082,223,627n/a5,799$8,935n/a$48,7890.000429%
Strong Wind$2,082,223,627$118,279,2495,799$159,504$13,772$293,5710.00766%
Tornado$2,082,223,627$118,279,2495,799$608,372$3,923$596,5630.0292%
Wildfire$607,190,717$36,356,9371,964$1,089,897$1,876$55,1810.179%
Winter Weather$2,082,223,219$118,279,2495,799$55,361$74$68,1260.00266%

Totals since the plan: not available. No approved plan on record, so there is no approval date to count from.

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
Population5,799
Building value (total, not at risk)$2,082,223,627
Agriculture value (total, not at risk)$118,279,249
NRI risk rating (all hazards)Very Low
Expected annual loss, buildings and agriculture, all hazards$10,077,154
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)$1,403,401
Social vulnerability ratingVery Low
Community resilience ratingRelatively High
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
Carson County4807250000000
Groom town4807260000000
Panhandle town4807270000000
Skellytown town4807280000000
White Deer town4807290000000

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, 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). Carson County, TX: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-30; County FIPS 48065). Automated baseline. https://hazardplain.org/tx/48065/ 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.