Severe Weather Threat Day 3 Tue Dec 18


Upper Trough Will Exit The Ern U.S. Seaboard With Trailing Portion
Of Attendant Cold Front Moving Swd Through Fl. Upstream Shortwave
Trough Will Amplify Across The Cntrl And Srn Rockies Resulting In
Deepening Of A Lee Cyclone Over The Cntrl And Srn High Plains.

Nrn Ca Through Pacific Nw Coasts...

Despite Limited Low Level Moisture...Steep Lapse Rates Associated
With Very Cold Air Aloft /-35 C At 500 Mb/ Within Amplifying Upper
Trough Will Contribute To Weak Instability And Scattered Cold Core
Convection Moving Onshore. Lightning Activity Is More Probable
During First Half Of The Day Before Upper Level Thermal Through
Shifts East Of The Coast.


Height Rises Will Occur Over The Fl Peninsula As Upper Trough Moves Offshore And A Low Amplitude Ridge Builds From West. Forecast Thermodynamic Profiles Indicate Significant Drying Aloft Associated With Subsidence Spreading Into The Region...Which In Conjunction With Only Weak Frontal Forcing Suggest Thunderstorm Potential Will Remain Limited.

WTVY-TV 285 N Foster Street Dothan, AL 36303 334-792-3195
Copyright © 2002-2016 - Designed by Gray Digital Media - Powered by Clickability 183725371 -
Gray Television, Inc.