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Strong to severe thunderstorms will be possible today and Friday. Concerns shift to primarily heavy rainfall over the weekend, possibly resulting in flash flooding.

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Area of Concern:

Today/Friday Severe: Along and west of the I-35 corridor.

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Weekend Heavy Rain: All of South Central Texas.

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Threats & Impacts:

Hail:  Up to 2 inches in diameter (Today/Friday)

Winds:  Straight line wind gusts over 60 mph. (Today/Friday)

Rainfall:  1-3 inches with isolated 4-5″ amounts possible. (48 hour rainfall totals from 7AM Saturday – 7AM Monday)

Timing and Overview:

Multiple rounds of active weather are expected today through the weekend. Isolated strong to severe thunderstorms will be possible mainly along and west of the I-35 corridor this afternoon and evening, Friday morning, and possibly again Friday afternoon. Large hail is the primary concern with the severe weather episodes. However, damaging winds gusts will also be possible.

Saturday, a cold front passage will shift the concern from severe weather to heavy rainfall and potentially flash flooding. Heavy rainfall may begin as early as Saturday morning and persist through Sunday evening. Generally, 1-3 inches of rainfall are expected, but isolated amounts of 4-5 inches may occur.

Confidence:

Hail/wind: Low to Moderate
Rainfall this weekend: Moderate

Additional Information Resources:

NWS Austin / San Antonio Webpagehttp://www.weather.gov/sanantonio

Storm Prediction Centerhttp://www.spc.noaa.gov/

Online Severe Weather Reporting
http://www.srh.noaa.gov/StormReport/SubmitReport.php?site=EWX

Sincerely,
Trevor Boucher
NWS Austin / San Antonio

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