SAN ANTONIO - Above is a live look at Doppler radar across South Texas
11 P.M. UPDATE: The NWS has extended the severe thunderstorm watch to include Bexar County. The watch remains in effect until 7 a.m.
Other counties included in the watch are: Comal, Guadalupe, Bandera, Kerr, Real, Kimble, Edwards, Val Verde and Kendall.
2:45 P.M. UPDATE: The NWS has issued a severe thunderstorm watch for portions of the Texas Hill Country until 11 p.m. Counties included in the watch are: Comal, Kendall, Blanco, Gillespie, Kerr, Bandera, Real and Edwards.
A cold front will drape across South Texas late Monday afternoon, sinking further south throughout the night and drenching the area with between 2 and 4 inches of rain.
Isolated totals could reach up to 7 inches in some areas, and there is a slight risk for wind gusts up to 60 mph and isolated pockets of hail.
The National Weather Service has issued a flash flood watch from 4 p.m. Monday through Tuesday morning for Bexar County and the following counties:
Atascosa, Bandera, Blanco, Caldwell, Comal, Fayette, Frio, Gillespie, Gonzales, Guadalupe, Hays, Kendall, Kerr, Medina, Real, Uvalde, Wilson and Zavala.
Small streams, creeks, low water crossings, and some rivers may experience dangerous flash flooding. Never drive across a road covered by water.
KSAT Meteorologist Adam Caskey said a flash flood watch means conditions are favorable for flash flooding, but it's not happening at the moment. A warning means it's actually occurring.
Tuesday morning, Adam Caskey said there is still a possibility of rain, and the primary threat will be residual flash flooding in the early morning.
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Copyright 2017 by KSAT. The Associated Press contributed to this report. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.