...Severe Thunderstorm Threat this Evening through Wednesday Morning...

...Gale Warning in effect for Gulf Waters through Late Tonight...

Timing and Overview:

A widespread increase of storms is expected across all of South Texas this evening. This activity will then continue overnight and into Wednesday morning as multiple rounds of thunderstorms develop and keep moving across South Texas. Latest models indicate that storms may linger even longer into Wednesday morning than previously anticipated. The Storm Prediction Center has kept the majority of the region in an Enhanced Risk of severe weather except for the Rio Grande Plains where a Slight Risk remains. All modes of severe weather will be possible with this activity tonight through Wednesday morning. Higher rainfall amounts may also lead to localized flash flooding. 

Frequent gusts to gale force can be expected across the Gulf waters late tonight into Wednesday morning along with hazardous seas building to 10 to 12 feet. 

South Texas Impacts:

Tornadoes: Isolated tornadoes are possible either in single cells, or in storms embedded in lines or clusters of thunderstorms.

Winds: Wind gusts in excess of 70 mph will be possible. In addition, if these storms form broken lines, those entire lines may be capable of damaging winds. 

Hail: Hail of golf ball size or larger can be expected from the strongest storms.

Rainfall: Highest rainfall mounts for the entire event are expected in the Victoria Crossroads and the middle Texas coast. However, localized heavy rainfall and flooding are possible with any of the strongest anticipated storms. Through Wednesday an area wide total of 1-2 inches is expected across areas south and west of I-37, and 2.5 to 4 inches across areas north and east of I-37, with locally higher amounts possible. Localized flash flooding may develop, especially across areas north and east of I-37 where higher rainfall totals are expected.

Marine: Frequent 35 to 40 knot gusts are possible, especially over the offshore Gulf waters. Seas will build towards 12 feet by Wednesday morning with localized higher waves.