Friday, August 21, 2009

Severe Weather Aug 21st 2009


An unusually strong trough is approaching the region over the next 24-36 hours. A powerful cold front is approaching the area. this cold front currently is cutting Michigan in half and it is running South Southeast of there. Out ahead of this cold front has been a very hot and humid air mass...a very tropical air mass. This is due to strong high pressure off the east coast and Hurricane Bill moving up the eastern seaboard. To give you an example of how warm it is..3 AM and 80 degrees ..DP 73.. The cold front itself with not cross the region though until Sunday...TRIGGERSTropical Air Mass CAPE 1000-3000Powerful Trough Powerful Cold front Lift Index -2-6 depending on locationBulk Shear 0-6 KM between 30 & 40 knots...
With such a tropical air mass in place .. I am expecting explosive development to occur. The approach of a much cooler air mass in combination with a tropical air mass in place is the recipe for explosive development. I am expecting to see numerous tornado warnings and excessive winds of 60-70 mph.

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