FROM THE NATIONAL WEATHER SERVICE:
...Severe Storms Possible Late Tuesday Afternoon through Wednesday Night...
....Locally Heavy Rainfall Possible Wednesday...
Timing and Area of Concern:
Rio Grande: Late Tuesday Afternoon through Wednesday
Hill Country: Tuesday Night through Wednesday
I-35 Corridor: Wednesday and Wednesday Evening
Coastal Prairies: Wednesday Night
Threats & Impacts:
Threats and risk areas are likely to evolve as the event draws closer!
Rainfall:1/2 to 2 inches possible. Isolated pockets of 2 to 4 inches possible across portions of the Hill Country and Central Texas. Localized flash flooding possible where heavier rainfall occurs.
Hail: Up to golfball sized
Winds: Up to 60 mph
Tornadoes: Isolated tornadoes can't be ruled out.
A strong upper level low and cold front will interact with increasing gulf moisture to produce showers and thunderstorms across South Central Texas. The storms are expected to develop along the Rio Grande late Tuesday afternoon and evening and move into portions of the western Hill Country Tuesday night into Wednesday morning. Showers and storms will expand in coverage into the I-35 corridor during the day on Wednesday and into Wednesday evening, possibly forming into a line of storms. The storms will move into portions of the Coastal Prairies Wednesday night.
Conditions are favorable for strong to severe storms, with large hail and damaging straight-line wind gusts the primary threats. In addition, pockets of locally heavy rainfall are possible, and are currently indicated to most likely occur across the Hill Country and Central Texas.
It should be stressed that at this time this is a lower confidence forecast on rainfall amounts and locations of heavier rainfall. Threats and locations are likely to evolve as the event draws closer.
Showers and Storms: High
Severe Storms: Moderate
Rainfall Amounts: Low