San Antonio is under a National Weather Service flood watch through 7 p.m. Friday, October 2, as a strong Pacific cold front stalls over South Central Texas. Forecasters expect a widespread 1 to 4 inches of rain across the watch area, with isolated pockets that could reach 6 to 8 inches or more. Rainfall rates of 2 to 4 inches per hour are possible where the heaviest cells form, which is enough to trigger flash flooding in minutes.
As of Wednesday afternoon, no major San Antonio school district had canceled or delayed classes for today. San Antonio ISD, Judson, IDEA Public Schools, Edgewood, East Central, Somerset, Medina Valley, and Schertz-Cibolo-Universal City all reported regular schedules, while Northside, Northeast, Alamo Heights, Harlandale, and Southwest said they were monitoring the forecast.
Storm timing shifts toward the school day
The forecast window has moved. On Wednesday morning, the weather service Austin-San Antonio office flagged 7 a.m. to 2 p.m. Today as the city’s riskiest stretch. Updated guidance now places San Antonio’s best storm chances between 11 a.m. and 4 p.m., as a slow-moving line of thunderstorms pushes southeast out of the Hill Country. That window covers lunch, the final class periods, and afternoon dismissal.
5:27am Radar Update: Storms capable of producing flooding and flash flooding continue a gradual eastward shift with time across the southern Edwards Plateau and Hill Country. Isolated storms have also started to develop over portions of the I-35 Corridor and Coastal Plains. pic.twitter.com/lWd7AJqBp0…