San Antonio Texas weather Doppler radar is the essential tool for tracking the severe thunderstorms, flash floods, and occasional tornado threats that characterize South Texas weather patterns. Consequently, knowing where to find reliable Doppler radar coverage for San Antonio — particularly during spring storm season — is a practical safety need for the 2.6 million residents of the San Antonio metropolitan area. This guide covers the best Doppler radar resources, the regional radar station, and what to know about San Antonio weather patterns.
San Antonio Texas Doppler Radar Resources
- NWS San Antonio/Austin (weather.gov/ewx): Official National Weather Service forecast and radar for the San Antonio region — the authoritative source for warnings, advisories, and severe weather alerts
- KEWX Radar Loop: Direct radar viewer at weather.gov showing the New Braunfels Doppler radar loop covering San Antonio
- Weather.com: The Weather Channel’s San Antonio radar with 1-hour and 24-hour precipitation loops
- AccuWeather San Antonio: Radar with future tracking and storm prediction overlays
- RadarScope App: Professional-grade Doppler radar app used by weather enthusiasts, shows raw NWS data at highest available resolution
- KSAT12 Weather: San Antonio’s local TV weather team at ksat.com with local radar expertise
The KEWX Radar — San Antonio’s Primary Doppler
The primary weather radar serving San Antonio Texas is the KEWX WSR-88D (Weather Surveillance Radar 1988 Doppler) located at New Braunfels, approximately 35 miles northeast of downtown San Antonio. Furthermore, the WSR-88D network — the backbone of US weather radar — provides continuous scanning of precipitation, wind velocity, and storm structure across the San Antonio area. As a result of the New Braunfels location, the radar has excellent coverage of the San Antonio metro area, the Hill Country to the north and west, and the coastal plain to the south and east.
San Antonio Weather Patterns
San Antonio has a subtropical semi-arid climate with hot summers, mild winters, and two wet seasons. Spring (April and May) brings the highest severe weather risk — warm Gulf moisture colliding with cold fronts produces supercell thunderstorms with large hail, damaging winds, and tornado potential. Furthermore, the Balcones Escarpment — the geological feature that marks the Hill Country transition — creates an orographic lifting effect that enhances thunderstorm development west and northwest of the city. As a result, flash flooding along the Medina River and San Antonio River systems is the most frequent weather emergency in the metro area.
Flash Flood Risk in San Antonio
San Antonio has one of the highest flash flood risks of any major Texas city. Furthermore, the Olmos Basin area north of downtown and the medical center area have experienced catastrophic flooding events in multiple decades. The Edwards Plateau terrain funnels intense rainfall rapidly into the city’s creek and river systems. As a result, San Antonio has invested heavily in flood control infrastructure including the Olmos Dam and extensive tunnel systems, but flash flood watches and warnings remain frequent during the spring storm season that Doppler radar is essential for tracking.
Frequently Asked Questions
What is the Doppler radar for San Antonio Texas?
San Antonio Texas weather Doppler radar is available at weather.gov/ewx (National Weather Service San Antonio/Austin office) and through weather apps including Weather.com, WeatherBug, and RadarScope. The NWS operates a WSR-88D Doppler radar at New Braunfels serving the San Antonio region.
Where is the weather radar station near San Antonio Texas?
The primary weather radar station serving San Antonio is the KEWX WSR-88D Doppler radar located at New Braunfels, Texas, approximately 35 miles northeast of downtown San Antonio. This radar provides coverage across the San Antonio metropolitan area and surrounding Hill Country.
What weather app has the best Doppler for San Antonio Texas?
The best weather apps for San Antonio Texas Doppler radar include Weather.com (The Weather Channel), AccuWeather, WeatherBug, and RadarScope — a professional-grade app popular with weather enthusiasts that shows raw NWS radar data with high resolution.
How often does it rain in San Antonio Texas?
San Antonio averages approximately 32 inches of rain per year, distributed unevenly across the seasons. Spring (April and May) is the wettest period with the highest flash flood risk. Summer is typically drier with occasional severe thunderstorms. Fall brings a secondary wet season.
Does San Antonio Texas get tornadoes?
San Antonio sits at the southern edge of Tornado Alley. Tornadoes are relatively rare in the immediate San Antonio area compared to North Texas, but the region does experience severe thunderstorms with tornado warnings several times per year. The Hill Country terrain provides some protection from tornado formation.
Find more San Antonio Texas content in our Texas News section. You can also read our San Antonio Texas complete city guide for the full metro overview. Additionally, our Austin Texas Weather guide covers the neighboring Central Texas weather patterns.