San Antonio floods fast after heavy rain, so see flash flood, tornado and hail alerts for Bexar County before you drive
San Antonio's creeks rise in minutes, and the record includes an F4 on April 28, 1953. 86 tornadoes have started within 25 miles, 4 deaths, and flash floods are the more frequent danger.
No National Weather Service watches, warnings or advisories are in effect for the center of San Antonio right now. San Antonio is in Bexar County.
Severe weather and weather alerts in San Antonio right now, with tornado warning, flood warning and heat advisory status
Each row is checked against the National Weather Service alerts for the center of the city, which is in Bexar County.
| Alert type | Right now |
|---|---|
| Tornado warning or watch | None in effect |
| Severe thunderstorm warning or watch | None in effect |
| Flood warning, flood watch or flash flood warning | None in effect |
| Winter storm warning, blizzard or ice storm | None in effect |
| Heat advisory or excessive heat warning | None in effect |
| Hurricane or tropical storm warning or watch | None in effect |
A watch means conditions are possible, so be ready. A warning means the hazard is happening or expected soon, so act now. What watches, warnings and advisories mean → · Tornado watch vs warning, and what to do in each → · All tornado watches and warnings →
Tornado history near San Antonio
Every tornado in the official record that started within 25 miles of the city center, 1953 to 2025.
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|---|---|---|
| 0 | 4 | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 0 |
| Date | Rating | Deaths | Injuries |
|---|---|---|---|
| April 28, 1953 | EF4 | 2 | 15 |
| April 28, 1953 | EF3 | 1 | 5 |
| November 22, 1961 | EF3 | 0 | 0 |
| March 19, 2002 | EF2 | 0 | 30 |
| March 19, 2012 | EF2 | 0 | 4 |
Most have come from March through May. The single busiest month is May (20% of the total).
Counts use each tornado's starting point and are limited to the official record, so they cover where tornadoes began, not every place they passed. A tornado that crosses a state line is listed once for each state. Ratings are the Enhanced Fujita (EF) scale, assigned after National Weather Service damage surveys. Source: NOAA Storm Prediction Center severe weather database. Past counts do not predict the next tornado.
Hurricanes and tropical storms near San Antonio
Storms whose center passed within 60 nautical miles (about 69 miles) with at least 39 mph winds, 1851 to 2025.
| Storm | Date | Winds at closest pass | Strength | Distance |
|---|---|---|---|---|
| Unnamed (1886) | August 20, 1886 | 100 mph | Category 2 | 44 mi |
| Unnamed (1942) | August 30, 1942 | 75 mph | Category 1 | 8 mi |
| Unnamed (1929) | June 29, 1929 | 65 mph | Tropical storm | 13 mi |
| Harvey (2017) | August 26, 2017 | 60 mph | Tropical storm | 68 mi |
| Unnamed (1851) | June 26, 1851 | 60 mph | Tropical storm | 64 mi |
Winds are the storm's maximum sustained winds when its center was closest to the city center in the six-hourly record, not the winds felt in the city, which depend on the storm's size and which side of it you were on. Source: NOAA National Hurricane Center HURDAT2.
Flood zone map for San Antonio
Flood zones are mapped by FEMA, and they are set street by street, so the city center cannot tell you whether your address is in one. FEMA's Flood Map Service Center lets you search an address and see its flood zone.
Be ready in San Antonio
Steps from official sources, with each point linked to the page it comes from.
- In a tornado warning, move to an interior room on the lowest floor of a sturdy building, or to your basement or safe room. Avoid windows. (NWS: Tornado watches and warnings)
- A mobile home or tent is not safe. Move to the closest substantial shelter and protect yourself from flying debris. (NWS: During a tornado)
- Being in a vehicle during a tornado is not safe. The best option is to drive to the closest shelter. (NWS: During a tornado)
- Identify and practice going to a safe shelter: a safe room built to FEMA criteria or a storm shelter built to ICC 500 standards. (Ready.gov: Tornadoes)
- The next best protection is a small, interior, windowless room or basement on the lowest level of a sturdy building. (Ready.gov: Tornadoes)
- During a tornado, cover your head and neck with your arms and put furniture or blankets around or on top of you. (Ready.gov: Tornadoes)
- Know your evacuation zone by contacting your local government or emergency management office. (NWS: Hurricane plan)
- Build an emergency kit and check equipment such as flashlights, generators and storm shutters. (NWS: Hurricane plan)
- Write or review a family emergency plan: how you will reach each other, where you will go and what you will do. (NWS: Hurricane plan)
- It is never safe to drive or walk into flood waters. Turn around, don't drown. (NWS: Turn Around Don't Drown)
- Never drive around the barriers blocking a flooded road. The road may have collapsed under the water. (NWS: Turn Around Don't Drown)
- Evacuate immediately when water starts to rise, and get to higher ground if you are in a flood-prone or low-lying area. (NWS: During a flood)
- When thunder roars, go indoors. Move from outdoors into a building or a car with a roof. (Ready.gov: Thunderstorms & Lightning)
- Avoid using electronic devices connected to an electrical outlet, and avoid running water. (Ready.gov: Thunderstorms & Lightning)
- Do not drive through flooded roadways. Six inches of fast-moving water can knock you down, and one foot can sweep a vehicle away. (Ready.gov: Thunderstorms & Lightning)
- Do not rely on a fan as your primary cooling device. Fans do not reduce body temperature or prevent heat-related illness. (Ready.gov: Extreme Heat)
- If your home has no air conditioning, find a cooling center, take cool showers or baths, and drink plenty of fluids. (Ready.gov: Extreme Heat)
- Never leave people or pets in a closed car on a warm day. Check on family members, older adults and neighbors. (Ready.gov: Extreme Heat)
Nearby cities
Common questions about weather in San Antonio
What county is San Antonio in?
San Antonio is in Bexar County, Texas.
Is there a tornado watch, tornado warning, winter storm, ice storm, snow or other weather warning in San Antonio and the rest of Bexar County right now?
The National Weather Service has no active alerts for the center of San Antonio right now. An alert can cover only part of Bexar County, so the Texas alerts page lists every county with an active National Weather Service alert.
What happened in the EF4 tornado near San Antonio on April 28, 1953?
It is the strongest tornado in the NOAA Storm Prediction Center record that started within 25 miles of the center of San Antonio. It was rated EF4, caused 2 deaths and 15 injuries, and began in Texas. Of the 86 tornadoes that started that close since 1950, 16 were rated EF2 or stronger. Ratings before 2007 use the original Fujita scale.
How many tornadoes have started within 25 miles of San Antonio?
86 tornadoes from 1953 through 2025, 35 of them since 2000. In the last 10 years (2016 to 2025) there were 7, and 2017 was the busiest year with 4. Most came from March through May, and May is the busiest single month (20% of the total). One tornado that crosses a county or state line can appear as two records.
When did a tornado last start near San Antonio?
The most recent tornado in the database that started within 25 miles of the center of San Antonio began on October 26, 2023 and was rated EF0. The database runs through 2025, so it does not include anything after that.
How does San Antonio compare with other Texas cities for tornadoes?
San Antonio has 86 tornadoes within 25 miles of its center, which ranks 17th of the 20 Texas cities that have a page here. Houston has the most with 274, followed by Arlington with 234. The counts depend on how big an area each city's circle covers, so use them as a rough comparison.
What is the strongest hurricane to pass near San Antonio?
An unnamed storm in 1886 is the strongest on record: winds of 100 mph (Category 2) at its closest recorded position on August 20, 1886, about 44 miles away. In all, 9 tropical storms and hurricanes have passed within 60 nautical miles (about 69 miles) of San Antonio since 1851, 2 of them with hurricane-strength winds. June has the most (44%). Wind and damage in the city itself depend on a storm's size and path.
Alerts come from the National Weather Service, the NOAA Storm Prediction Center and the National Hurricane Center.