Wilson County

Every recorded tornado

1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Wilson County: 0.
2. Weak tornadoes were under-recorded before Doppler radar coverage became national in the early 1990s, so earlier decades read low. Ratings use the Fujita scale before February 2007 and the Enhanced Fujita scale after.

Storm Prediction Center severe weather database, 1950 to 2025.

Every storm within 100 miles

1. Tropical storms and hurricanes (34 kt or more, still tropical) at closest approach. Post-tropical remnants with gale-force winds are listed but not counted. Direct: track within 50 miles; near: within 100 miles. Distance is measured to the county boundary for counties and to the city centre for cities, using positions interpolated hourly between HURDAT2 fixes.

National Hurricane Center HURDAT2, 1851 to 2025.

Smoke overhead

1. A smoke day is a date on which a smoke plume traced by NOAA Hazard Mapping System analysts from satellite imagery covered this place's point (the county's population centre or the city centre). Counts here are of medium or heavy smoke. Since 2018 analysts have often drawn light smoke as one area over most of the continent, so light-smoke counts are not comparable from year to year. The plumes show smoke anywhere in the air above, not air quality at the ground, and smoke hidden by cloud is missed.

NOAA Hazard Mapping System smoke analysis, 2011 to 2026, retrieved October 30, 2026.

Claims by ZIP code

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).

OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026. NOAA Storm Events through 2026.

River crests

River gauges

1. Crests are the highest and the recent crests the National Weather Service lists for each river gauge in the county that has a flood stage, not every flood. Flood categories use each gauge's current flood stages; crests from before levees, dams or channel changes may not be comparable. Crests measured on an old datum are left out of the rankings.

NOAA National Water Prediction Service gauge records, retrieved October 30, 2026.

1. The Palmer Drought Severity Index is computed by NOAA each month from the county's average temperature and precipitation, relative to the county's own climate. Zero is normal; -3 or lower is severe drought and -4 or lower extreme drought. It describes the long-term balance of moisture, not water supply or crop losses.

NOAA NCEI nClimDiv county Palmer Drought Severity Index, 1895 to September 2026, issued October 6, 2026.

Every earthquake of magnitude 4 or more within 50 miles

1. Earthquakes of magnitude 2.5 or more in the USGS Comprehensive Catalog since 1900. Within 50 miles means the epicentre lies within 50 miles of the county boundary (or inside the county).
2. Small earthquakes were under-recorded before the modern seismic networks of the 1970s and are still missed in remote areas, so early decades read low. Magnitudes are as the catalogue reports them and mix scales (moment, local and body-wave).

USGS ANSS Comprehensive Earthquake Catalog, 1900 to present, retrieved October 30, 2026.

More event types since 1996

Costliest events since 1996

1. Oct 17, 1998Flood, Wilson$50.0 million
   National Weather Service narrative

   Flooding along the San Antonio River, Cibolo Creek and Geronimo CreekIn Bexar County, the San Antonio River begins just below Olmos Dam where it merges with spring flow. Two new flood tunnels on the San Antonio River and Apache Creek respectively saved downtown San Antonio and homes and businesses below Brackenridge Golf Course to the old Lone Star Brewery from very serious flooding. At Loop 410 in San Antonio, the San Antonio River crested at 36.2 feet, where flood stage is 20 feet. Several homes just below Loop 410 had 10 feet of water over the slabs. At Elmendorf, the San Antonio crested at 64.6 feet, with flood stage at 35 feet. Flow escaped out of the deep canyon of the…

2. Oct 18, 1998Flash Flood$35.0 million
   National Weather Service narrative

   The Great October FloodIn advance of a very slow-moving upper level trough of low pressure over West Texas, a cold front drifted slowly southeastward into West Central Texas during the evening of Friday, October 16th. Deep moisture was in place across South Central Texas as the two systems approached, being fed at the mid and upper levels by two nearly stationary hurricanes, Madeline near the tip of Baja Mexico, and Lester, anchored just off Acapulco, Mexico, and in the low levels by a strong flow from the Gulf of Mexico. A very moisture-rich environment was in place across South Central Texas as the event developed. Near 3 am CST, with the cold front still west of San Angelo,…

3. Aug 30, 2001Flash Flood$2.0 million
   National Weather Service narrative

   Showers and thunderstorms began reforming across the I-35 corridor from San Antonio to New Braunfels near sunrise, and by mid-morning, had produced an additional rainfall averaging 1 to 2 inches from San Antonio and New Braunfels southeastward into the Seguin and Floresville areas. The highest totals reached near 11 inches from just east of San Antonio to Seguin and Kingsbury in Guadalupe County and across Wilson County from Floresville eastward. Wilson County Emergency Management Officials reported that severe flash flooding had cut SH123 which runs from south of Seguin into Stockdale. Water was reported to be six inches over the 500-year flood-plain mark along SH123, and the…

4. Oct 30, 2015Tornado$1.5 million
   National Weather Service narrative

   A tornado touched down near Hickory Circle about 0.5 miles south of Floresville. The tornado produced tree and minor roof damage across several city streets as it moved north. The damage increased in coverage and intensity as it approached Hwy 181. Just east of the intersection of Hwys 181 and 97, substantial roof damage was observed to a few homes as well as businesses along Hwy 181. This included several campers and recreational vehicles that were destroyed. One 5th wheel camper was thrown on top of a local hotel. One large billboard metal sign and structure was destroyed along with multiple power poles. The damage peaked at Floresville high school. A large two story classroom…

5. Sep 10, 2020Flash Flood$1.0 million
   National Weather Service narrative

   Thunderstorms produced heavy rain that led to flash flooding closing CR 220 west of Poth. The Emergency Manager also reported that there was damage to the road.

6. Jul 20, 2007Flash Flood$500,000
   National Weather Service narrative

   Gen 3 to 4 inch rainfall was reported in Wilson County, with up to 6 inches north of Stockdale. US87, SH123, and FM1681 were closed, along with most roads in Stockdale area. Several homes and businesses were also flooded, with more than a dozen people rescued by emergency services after being trapped in high water in homes and vehicles.

7. Dec 23, 2002Hail$300,000
   National Weather Service narrative

   Widespread damage was reported to vehicles, as well as the roofs, walls and windows of buildings over the northern half of Wilson County. The hail ranged from 1 to 2 inches in diameter. The larger size fell around Stockdale, killing birds that were roosting in trees and piling up in the city streets 6 inches deep. Residents reported that the sound of the hail was almost deafening. Damage to city-owned properties in Stockdale alone was estimated at $100,000. Hail broke windows at one nursing home, with minor injuries to some residents.

8. Mar 19, 2002Thunderstorm Wind$200,000
   National Weather Service narrative

   Severe winds, estimated at 60 to 70 knots, caused spotty damage across much of Wilson County. The worst of the damage was in the northern part of the county, where trees and tree limbs were blown down, roofs were damaged, and outbuildings were blown over.

9. Aug 16, 2007Flash Flood$200,000
   National Weather Service narrative

   The area of extremely heavy rainfall associated with the remains of Tropical Storm Erin continued northwestward into Wilson County. General rain totals over the county varied from 3 to 4 inches. The highest amounts were 8 inches and stretched northwestward from Floresville to the Bexar County line. Roads across the northwest part of the county were closed due to flash flooding, including FM1303, FM536, and FM2579.

10. Sep 5, 2001Flash Flood$150,000
    National Weather Service narrative

    Widespread showers and thunderstorms over the three counties produced general rainfall of 1 to 2 inches, with isolated totals of up to 6 inches between Seguin, Stockdale and Floresville. Numerous rural roads and low water crossings were closed. High water rescues were required just north of the city of Seguin along Geronimo Creek. Widespread flooding in the town of Stockdale forced over two dozen families to leave their homes. Brief flood damage was reported to the homes.

1. Storm Events records before 1996 cover only tornadoes, thunderstorm wind and hail. Damage figures are as reported by the National Weather Service at the time, not adjusted for inflation.

NOAA NCEI Storm Events Database, 1950 to 2026, issued October 26, 2026.

All-time high

111°FSep 5, 2000

All-time low

0°FJan 31, 1949

Warmest night

82°F6 times, most recently Aug 21, 2023

Coldest day

23°F2 times, most recently Dec 22, 1989

Wettest day

11.26 inOct 17, 1998

Snowiest day

13.2 inJan 12, 1985

Hottest year

2024mean 73.3°F

Coldest year

1976mean 66.4°F

Wettest year

197352.28 in

Driest year

202211.51 in

Snowiest season

15.9 in1984-85

Station San Antonio International Airport (USW00012921), 799 ft elevation, 29.8 miles from the population centre. Daily records from 1946 to October 26, 2026; 100.0% of days in the last 30 years are complete. Records at a single station can differ from a city’s official threaded record, which may combine several stations.

NOAA NCEI Global Historical Climatology Network Daily.

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).

OpenFEMA Disaster Declarations Summaries, retrieved October 30, 2026. Statewide declarations are not listed.

Neighbouring counties

• Tornadoes NOAA Storm Prediction Center severe weather database, through 2025.
• Tropical cyclones NOAA National Hurricane Center HURDAT2 (Atlantic; Northeast and Central Pacific), through 2025.
• Wildfire USGS/USFS Monitoring Trends in Burn Severity, through 2026.
• Storm events NOAA NCEI Storm Events Database, through 2026.
• Flood insurance OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026.
• Declarations OpenFEMA Disaster Declarations Summaries v2, retrieved October 30, 2026.
• Weather records NOAA NCEI Global Historical Climatology Network Daily, station USW00012921.
• River crests NOAA National Weather Service, National Water Prediction Service river gauges, retrieved October 30, 2026.
• Drought NOAA NCEI nClimDiv county Palmer Drought Severity Index, through September 2026.
• Smoke NOAA NESDIS Hazard Mapping System smoke analysis, retrieved October 30, 2026.
• Earthquakes USGS ANSS Comprehensive Earthquake Catalog (ComCat), retrieved October 30, 2026.

Joins, thresholds and known limits are set out in the methodology. Found an error? Report it. Page built October 30, 2026.