Friday, May 20, 2011

May 20 Severe Weather

Storms will continue to be on the increase early today in Western Texas and Western Oklahoma. GOES Satellite and radar data is already showing that this has occurred. Convective action will intensify into the day and continue eastward, feeding off the warmth and humidity. While deep layer shearing and lapse rates decrease out east, there is still a marginal severe hail and modest severe wind threat.

However, given that this convective activity has already begun in a widespread fashion, there is definitely concern regarding the degree of instability in the wake of the morning storms. However, a narrow corridor from West Central Texas through West Central Oklahoma and Kansas will be in place where some instability could build up again. Should that happen, that area would be the main focus for more convective activity. Residual outflow boundaries and the Pacific Front forcing these storms along may support new rounds of thunderstorms. With stronger flow aloft (40-45 kt), there is an environment supportive for supercells and bowing segments. However, hodographs (weather instrument) limit this threat to some extent.

Today's Hail threat

Today's tornado threat

Today's wind threat

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