There is still another week-plus of the winter season in the nothern hemisphere. Astronomical spring begins on Wednesday, March 20. But even in these last days of winter there could always be a threat for strong to possibly severe thunderstorms. That’s the case for the time period beginning at midnight Tuesday night to around 8 a.m. Wednesday.
Upper-level low pressure is seen spinning off the central coast of California Monday morning. It is headed to Baja, California by tomorrow morning. Moisture will continue to increase from the west to southwest flow aloft leading to a chance of showers with isolated thunderstorms through Tuesday.
The low will then track to west Texas Tuesday night and interact with a cold front to increase the chance of showers and thunderstorms beginning around midnight from west of Junction southward to near Del Rio. These storms will march eastward through the Hill Country during a time frame predicted to be from 4 to 7 a.m. to arrive in our I-35 viewing area around sunrise (7:43) Wednesday.
During that time the Storm Prediction Center has the Hill Country along with far western sections of Hays, Travis, and Williamson Counties under a SLIGHT RISK for severe thunderstorms. Risks:
Damaging winds: LOW TO MODERATE
Hail: LOW TO MODERATE
The rest of Hays, Williamson, and Travis Counties into western Bastrop and Caldwell Counties are under a MARGINAL RISK.
Thunderstorms look to weaken to just general showers during the rest of the morning. The afternoon will be partly cloudy to mostly sunny.