[MCD] SWOMCD

[Mesoscale Convective Discussions]

ACUS11 KWNS 210004
SWOMCD
SPC MCD 210004 
MTZ000-WYZ000-210130-

MESOSCALE DISCUSSION 0913
NWS STORM PREDICTION CENTER NORMAN OK
0704 PM CDT SAT MAY 20 2006

AREAS AFFECTED...SOUTH CENTRAL/EASTERN MT AND NORTHEAST WY

CONCERNING...SEVERE THUNDERSTORM WATCH 367...

VALID 210004Z - 210130Z

VALID PORTION OF SEVERE THUNDERSTORM WATCH 367 CONTINUES ACROSS
MT/FAR NORTHERN WY UNTIL 02Z...WITH CONTINUED THREAT FOR ISOLATED
LARGE HAIL/DAMAGING WINDS OVER THE NEXT FEW HOURS.

RELATIVELY WELL ORGANIZED LINE OF STRONG STORMS/MCS IS MOVING
EAST-NORTHEAST ACROSS EAST CENTRAL MT AT THIS TIME...FROM WESTERN
GARFIELD COUNTY INTO PHILLIPS COUNTY AS OF 2345Z. ALTHOUGH SHORT
TERM SEVERE THREAT MAY REMAIN...THIS LINE OF STORMS WILL QUICKLY
WEAKEN AS THEY PROGRESS EAST OF THE FRONT INTO A COOLER/MORE STABLE
AIRMASS PER NIL CAPE/STRONG CINH EVIDENT IN 00Z OBSERVED GLASGOW
RAOB. FARTHER SOUTH...AN ISOLATED SEVERE THREAT WILL ALSO PERSIST
OVER THE NEXT HOUR OR TWO FROM SOUTH CENTRAL MT INTO NORTHEAST
WY...WHERE THE AIRMASS REMAINS WEAKLY TO MODERATELY UNSTABLE OUTSIDE
OF CONVECTIVE OUTFLOWS /NAMELY ACROSS FAR SOUTHEAST MT INTO
NORTHEAST WY/. INDICATIONS ARE THAT WW 367 WILL BE ALLOWED TO EXPIRE
AS SCHEDULED AT 02Z WITH A DIMINISHING SEVERE THREAT VIA LOSS OF
DAYTIME HEATING AND/OR CONVECTIVELY OVERTURNED BOUNDARY LAYER.

..GUYER.. 05/21/2006

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

ATTN...WFO...UNR...BYZ...GGW...RIW...TFX...

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