Tuesday, May 13, 2008

Wednesday/Wednesday Severe Discussion:


Tomorrow a low pressure will be tracking across the deep south, and there will be a few focal points for severe weather with this:
TX Dryline:
-Dew points in the 60s/low 70s, CAPEs of over 2500, and LIs of -6 to -10 will all contribute to a Texas severe threat tomorrow. Normally, this may constitute a moderate risk, but there will really be a lack of low level jet stream energy (wind shear) and there may be a cap in place to limit the severe weather. So, for now only a slight risk. However, tomorrow evening when some isolated to scattered storms develop, some could be highly severe, so even though this is a slight risk all modes of severe weather, some of it significant will likely occur along a dry line in TX tomorrow evening. Warm front advancing NE (rest of the slight risk, it could move through a lot of states):
-Dew points will be rising into the high 60s/low 70s south of the warm front, and there will be CAPEs of into the 1000-2000 range throughout the night along and just south of the warm front, LIs of -4 to -8 along and south of the warm front, and some shear will combine to create a ongoing severe threat along the warm front starting late tomorrow across AR/LA and advancing ENE throughout tomorrow night. It appears that hail will be the biggest threat, but with the added shear I cannot rule out some tornadoes and straight line wind damage with the warm front convection tomorrow/tomorrow night.

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