Area of Concern:
All of South Central Texas
Threats & Impacts:
Wind: Northwest winds 20-30+ mph sustained, Gusts to 45 mph.
Humidity: Sunday humidity below 20% along/near the Rio Grande, 20-30% elsewhere.
Impacts: Fires (mainly grass fires) that develop could spread quickly. Strong winds could lead to minor damage, isolated power outages.
Timing and Overview:
A weather system to our north will cause strong and gusty Northwest winds starting Saturday night and lasting through Sunday evening. The strongest winds, with gusts maybe exceeding 45 mph, will likely occur Sunday afternoon. Along with the wind, relative humidity will drop below 20% out west near the Rio Grande…and below 30% elsewhere. This wind and low humidity will increase the threat for fast moving fires.
The recent rains have limited the threat for large wildfires in South Central Texas with the Texas Forest Service having most of the area in a Low/Moderate Fire Danger. However, with the abundance of tall dead/dry grass, grassfires are a good bet with these conditions on Sunday. And with the strong Northwest winds forecast, those fires could move quickly. Please take the necessary precautions.
Moderate confidence on wind speeds and humidity.
Additional Information Resources:
· NWS Austin / San Antonio Webpage: https://www.weather.gov/sanantonio
· NWS Austin / San Antonio Fire Weather Webpage: https://www.srh.noaa.gov/ewx/?n=firewx.htm
· Texas Forest Service Predictive Services: https://ticc.tamu.edu/PredictiveServices/FuelsFireDanger.htm
NWS Austin / San Antonio