Severe Weather Threat Increasing

| December 28, 2007 @ 11:10 am | 17 Replies

Much of Central Alabama is now in the warm sector of our low pressure system located over Missouri.

Dewpoints have come up to 63F at Tuscaloosa and Birmingham, 64F at Calera and Alexander City.

A new added problem is clearing skies over South Central Alabama. The termperature at Montgomery has soared to 75F.

CAPE values are coming up over South Alabama and will continue to increase.

Wind shear values are highest over the northern half of the state, where 0-1 km helicity values are above 450 m2/s2.

A tornado watch is in effect until 6 p.m. CST for much of Central, Southern and Eastern Alabama.

Thunderstorms will increase ahead of the front and these have the potential to become supercellular and severe. They could produce tornadoes.

In addition, as the line of storms moves into the increased instability, they are intensify. The high wind shear values will allow individual storms in the line to rotate and become severe. Wind damage and isolated tornadoes are possible.

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Bill Murray is the President of The Weather Factory. He is the site's official weather historian and a weekend forecaster. He also anchors the site's severe weather coverage. Bill Murray is the proud holder of National Weather Association Digital Seal #0001 @wxhistorian

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