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Conditions Improving for Severe Weather

| December 20, 2012 @ 5:29 am

Another low instability/high shear environment is developing for much of Alabama this morning. A look at some of these parameters shows high shear with helicity values running in the 500 to 900 range from Northwest Alabama to Southwest Alabama. Instability values are not very impressive with CAPE values running at or below 1000 jg/kg across Southeast Mississippi. However, we’re also seeing surface dew points surging northward ahead of the cold front with lower 60 values pushing into West Central Alabama – Tuscaloosa at 60 while Birmingham is at 54.

A Tornado Watch is in effect until noon for the area south of Birmingham with the most active weather occurring in the vicinity of Mobile across Southwest Alabama.

Stay tuned to the Blog for the latest information.

-Brian-

Category: Alabama's Weather

About the Author ()

Brian Peters is one of the television meteorologists at ABC3340 in Birmingham and a retired NWS Warning Coordination Meteorologist. He handles the weekend Weather Xtreme Videos and forecast discussion and is the Webmaster for the popular WeatherBrains podcast.

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