Thursday, May 3, 2007

MESO: Mesoscale Discussion 0673

ACUS11 KWNS 032359
SWOMCD
SPC MCD 032359
MTZ000-WYZ000-040100-

MESOSCALE DISCUSSION 0673
NWS STORM PREDICTION CENTER NORMAN OK
0659 PM CDT THU MAY 03 2007

AREAS AFFECTED...ERN MT

CONCERNING...SEVERE THUNDERSTORM WATCH 218...

VALID 032359Z - 040100Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 218
CONTINUES.

A LOCALIZED SEVERE THREAT WILL LIKELY PERSIST FOR THE NEXT FEW HOURS
ALONG AND IMMEDIATELY TO THE W OF N TO S ORIENTED SURFACE COLD FRONT
ANALYZED FROM 50 NE GGW TO 10 E MLS TO 40 NNW GCC. TSTM DEVELOPMENT
HAS BEEN CONFINED TO ATOP THE SURFACE-BASED COLD DOME WITH NEARLY
UNIDIRECTIONAL FLOW ABOVE 2-3 KM AGL /PER GLASGOW AND BILLINGS VAD
PROFILERS/. FAVORABLE SPEED SHEAR WITHIN THE EFFECTIVE LAYER /30 TO
40 KTS/...SHOULD MAINTAIN A MARGINALLY SEVERE ELEVATED HAIL THREAT
FOR THE NEXT COUPLE OF HOURS. TO THE E OF THE COLD FRONT...THE AIR
MASS IS NOT EXPECTED TO SUFFICIENTLY DESTABILIZE WITH SURFACE DEW
POINTS NEAR 40 DEGREES.

.GRAMS.. 05/03/2007

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

ATTN...WFO...BYZ...GGW...

45010478 44990645 45550658 45800667 48850705 49000676
48970593 48980503 48820459 48230441 47200449 46060458

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