SWOMCD
SPC MCD 192321
IAZ000-MOZ000-MNZ000-200015-
MESOSCALE DISCUSSION 0949
NWS STORM PREDICTION CENTER NORMAN OK
0621 PM CDT MON MAY 19 2008
AREAS AFFECTED...NWRN/CNTRL IA
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 192321Z - 200015Z
FAST-MOVING SHOWERS/ISOLATED EMBEDDED TSTMS WILL CONTINUE TO POSE A
THREAT FOR SEVERE WIND GUSTS OVER THE NEXT FEW HOURS PRIOR TO ONSET
OF NOCTURNAL COOLING AND LESS FAVORABLE AIR MASS FARTHER DOWNSTREAM.
GIVEN THE SHORT-DURATION AND ISOLATED NATURE OF THIS CONVECTION...A
WW DOES NOT APPEAR PRUDENT.
RADAR/SATELLITE IMAGERY DEPICTED AN AREA OF LOW-TOPPED CONVECTION
MOVING RAPIDLY SEWD IN NWRN IA/FAR SWRN MN WITH A FEW SEVERE WIND
GUSTS RECENTLY RECORDED BY AWOS/RWIS SITES. THIS APPEARS TO HAVE
DEVELOPED IN RESPONSE TO FORCED ASCENT FROM A SHORT WAVE TROUGH
DIVING THROUGH THE UPPER MS RIVER VALLEY...AND ITS ASSOCIATED
SURFACE LOW ANALYZED NEAR FOD. THE THERMODYNAMIC/KINEMATIC
ENVIRONMENT WILL REMAIN FAVORABLE FOR CONTINUED LOCALIZED STRONG TO
SEVERE WINDS OVER THE NEXT HOUR OR SO...OWING TO STEEP LAPSE RATES
AND STRONG NWLY WINDS PUSHING SEWD IN ASSOCIATION WITH SHORT WAVE
TROUGH. THE SEVERE THREAT SHOULD DIMINISH RATHER QUICKLY AS
TEMPERATURE/DEW POINT SPREADS ARE NOT AS LARGE FARTHER DOWNSTREAM
AND AS NOCTURNAL COOLING COMMENCES.
..GRAMS.. 05/19/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...DVN...MPX...DMX...EAX...FSD...OAX...
42369251 41509215 40629237 40509337 41119448 42069568
42809601 43339590 43749536 43559437 43059330
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@PO.UIUC.EDU with
"unsub wx-storm" in the body of your message. For more information write cnovy@cox.net.
No comments:
Post a Comment