[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 200720
SWOMCD
SPC MCD 200720
PAZ000-NYZ000-WVZ000-OHZ000-VAZ000-TNZ000-KYZ000-200845-

MESOSCALE DISCUSSION 0486
NWS STORM PREDICTION CENTER NORMAN OK
0220 AM CDT WED APR 20 2011

AREAS AFFECTED...ERN OH...WRN PA...WV...ERN KY...MIDDLE AND ERN TN

CONCERNING...TORNADO WATCH 163...165...

VALID 200720Z - 200845Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 163...165...CONTINUES.

SEVERE THREAT ALSO CONTINUES FOR SEVERE THUNDERSTORM WATCH 164.

EXTENSIVE PRE-FRONTAL SQUALL LINE IS PROBABLY PAST PEAK CONVECTIVE
INTENSITY...AND EASTERLY SYSTEM-RELATIVE LOW-LEVEL INFLOW EMANATING
FROM A DRIER ENVIRONMENT ALONG THE WESTERN SLOPES OF THE
APPALACHIANS SHOULD RESULT IN CONTINUED WEAKENING TRENDS...EVEN WITH
SOME MOISTENING OF THIS AIR MASS STILL POSSIBLE.  HOWEVER...THE
CONGLOMERATE SURFACE COLD POOL GENERATED BY THE CONVECTIVE SYSTEM IS
LIKELY TO BE SLOWER TO WEAKEN...AND WILL PROBABLY CONTINUE TO BE
ACCOMPANIED BY AT LEAST THE RISK FOR POTENTIALLY DAMAGING WIND GUSTS
INTO THE CREST OF THE APPALACHIANS BETWEEN NOW AND 10-11Z.  STRONGER
EMBEDDED COLD POOLS ARE STILL SURGING EAST AT UP TO 60 KTS...SO
SWATHS OF LOCALLY VERY STRONG WINDS ALONG THE GUST FRONTS WILL
REMAIN POSSIBLE AT LEAST ANOTHER COUPLE OF HOURS.

..KERR.. 04/20/2011

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

ATTN...WFO...BUF...CTP...RNK...PBZ...RLX...CLE...MRX...JKL...
ILN...LMK...OHX...

LAT...LON   35498597 36018580 36618565 36738556 37378425 37988329
            39678194 40628128 41928070 42067928 40617895 37878051
            36398236 35268504 35498597



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