May 21, 2013
A Large Upper Trough Composed Of Several Distinct Vorticity Maxima
Resides Over The Ern Conus Late This Morning...And Will Progress Ewd Across The Wrn Atlantic By Tonight.
Surface Low Pressure Positioned Ahead Of The Trough...And High Pressure Situated Over The Ms Valley Will Maintain Offshore Flow And A Stable Atmosphere Throughout The Forecast Period Across The Atlantic Coast Region.
Farther W...A Shortwave Trough Digging Sewd Across The Nrn Rockies And A Weak Impulse Entering Ca Will Begin To Phase Late Tonight.
Cold Midlevel Temperatures And Steep Lapse Rates Associated With Both Of These Waves Have Aided In Isolated Lightning Strikes This Morning. Though These Features May Support A Few More Strikes Today And Tonight...Coverage Is Forecast To Be Below 10 Percent... Which Will Preclude The Introduction Of Categorical Thunder Areas.
|
