May 21, 2013
The Only Change To The Outlook For This Issuance Is To Expand The
Thunder Area Over The Srn Appalachian Mtns Into Ern Tn...Far Se Ky
And Far Wrn Va Where Thunderstorms Are Ongoing.
Thunderstorms Still May Develop Along The Coast Of Sc And Srn Nc Late This Afternoon As An Upper-Level Trough Approaches The Region From The West. For This Reason...The Thunder Area In The Coastal Carolinas Remains Unchanged.
Prev Discussion...
A Compact Mid Level Low Over The Deep South Will Translate E/Newd Across The Carolinas And Weaken As It Moves Into The Wrn Atlantic By Daybreak Friday.
In The Low Levels...A Surface Low Over Nrn Ga Is Forecast To Migrate Ewd Near The Sc/Nc Coast By Evening Along A Stalled West-East Oriented Front With An Attendant Cold Front Sweeping Ewd.
The Steepening Of Initially Poor Mid Level Lapse Rates /Reference 12z Chs Raob/ In Association With The Approaching Upper Low...Will Seemingly Aid In Fostering A Low Topped Band Of Convection To Develop Along The Front As It Sweeps Ewd Through The Sc Coastal Plain And Far Srn Coastal Nc.
Marginal Instability Will Likely Inhibit Vigorous Updraft Development Over Land...With The Strongest Storms Relegated Offshore... Precluding Low Severe Wind Probabilities.
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