[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 271937
SWOMCD
SPC MCD 271937
MDZ000-VAZ000-DCZ000-WVZ000-NCZ000-TNZ000-272100-

MESOSCALE DISCUSSION 1599
NWS STORM PREDICTION CENTER NORMAN OK
0237 PM CDT FRI JUL 27 2007

AREAS AFFECTED...MD...VA...DC...WV

CONCERNING...SEVERE THUNDERSTORM WATCH 556...

VALID 271937Z - 272100Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 556
CONTINUES.

LINEAR FORCING FOR ASCENT ALONG LEADING EDGE OF MESOSCALE COLD POOL
APPEARS TO BE SUSTAINING STRONG TO ISOLATED SEVERE STORMS NOW
CRESTING THE BLUE RIDGE. THE COLD POOL ASSOCIATED WITH THIS
CONVECTION WAS ALSO EVIDENT IN MESO-HIGH SITUATED ACROSS SWRN PA
THIS AFTERNOON. WHILE MID LEVEL FLOW AOB 20KT ACROSS THIS REGION
REMAINS SOMEWHAT MARGINAL TO SUPPORT A MORE ORGANIZED COMPLEX OF
STORMS AT PRESENT...DIURNAL/DIABATIC EFFECTS IN THE FORM OF STRONG
DOWNSTREAM HEATING/MIXING SHOULD SUPPORT AT LEAST ISOLATED WIND
DAMAGE POTENTIAL AS THE MESOSCALE COMPLEX SPREADS EAST OVER THE NEXT
FEW HOURS.

EVEN SMALLER MESOSCALE DISTURBANCE APPEARS TO BE SUSTAINING ACTIVITY
ACROSS SWRN VA ATTM. STRONGER INSTABILITY RESIDES TO THE EAST OF
THIS ONGOING CONVECTION AND SHOULD SUSTAIN SOME SEVERE THREAT AS
ACTIVITY DEVELOPS SLOWLY EAST ACROSS THE SRN PORTIONS OF THE WATCH.

..CARBIN.. 07/27/2007

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...PHI...AKQ...LWX...RNK...PBZ...RLX...MRX...

36587864 36558166 37218185 37208152 37738088 38188038
38007989 39007936 39237939 39647890 39677606 38707615
38677672 37737736 38017765 37787775 37907806 37667807
37117825 37067847



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