[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 111834
SWOMCD
SPC MCD 111833
WVZ000-PAZ000-VAZ000-OHZ000-NCZ000-TNZ000-111930-

MESOSCALE DISCUSSION 0893
NWS STORM PREDICTION CENTER NORMAN OK
0133 PM CDT SUN MAY 11 2008

AREAS AFFECTED...PARTS OF ERN OH...WV...SW VA...ERN TN

CONCERNING...TORNADO WATCH 306...307...

VALID 111833Z - 111930Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 306...307...CONTINUES.

BUT...THE SEVERE THREAT IS DIMINISHING/BECOMING MORE LOCALIZED.
AND...A NEW WW IS NOT ANTICIPATED.

THE LEADING EDGE OF LOW-LEVEL COLD ADVECTION ACROSS THE LOWER OHIO
VALLEY CONTINUES TO GRADUALLY ADVANCE TOWARD THE CREST OF THE
NORTHERN/CENTRAL APPALACHIANS.  AND...THIS WILL EVENTUALLY END
CONVECTIVE POTENTIAL ALONG ITS WESTERN SLOPES FROM EXTREME NORTHEAST
TENNESSEE INTO EASTERN OHIO.  HOWEVER...THE NARROWING TONGUE OF WEAK
BOUNDARY LAYER INSTABILITY WITHIN CLEAR SLOT EAST OF THE MID-LEVEL
CIRCULATION MAY REMAIN A FOCUS FOR A FEW STORMS THROUGH 20-21Z.  ONE
OR TWO OF THESE MAY STILL BE CAPABLE OF PRODUCING A BRIEF TORNADO OR
SOME MARGINALLY SEVERE HAIL IN THE PRESENCE OF FAVORABLE SHEAR AND
AMBIENT VERTICAL VORTICITY.  BUT...THE OVERALL SEVERE THREAT IS
BECOMING LOW.

..KERR.. 05/11/2008

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

ATTN...WFO...RNK...PBZ...RLX...CLE...GSP...MRX...ILN...

40368243 41068281 41548192 41408103 40698040 38488033
37118068 36108158 36168228 37388191 38768176 39948213



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