SWODY1
SPC AC 131558
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1058 AM CDT WED APR 13 2011
VALID 131630Z - 141200Z
...NO SVR TSTM AREAS FORECAST...
...INTERMOUNTAIN REGION...
STRONG TROUGH CURRENTLY MOVING ONSHORE CENTRAL PAC COAST WILL DRIVE
AN INTENSIFYING COLD FRONT EWD ACROSS THE GREAT BASIN TODAY. AT 16Z
COLD FRONT ABOUT TO MOVE INTO SWRN ID AND EXTENDING SSWWD THRU WRN
NV WILL HAVE MOVED THRU THE SERN ID SNAKE RIVER PLAINS AND INTO NWRN
UT BY 00Z.
ALTHOUGH AIR MASS AHEAD OF FRONT IS RATHER DRY...COMBINATION OF
STRONG HEATING AND MID LEVEL COLD ADVECTION WILL LEAD TO VERY STEEP
LAPSE RATES IN PRE-FRONTAL AIR MASS THIS AFTERNOON. MLCAPES NO
GREATER THAN A COUPLE HUNDRED J/KG CAN BE EXPECTED PRIOR TO
FROPA...WHICH SHOULD BE SUFFICIENT FOR THUNDERSTORMS TO DEVELOP
ALONG AND JUST W OF THE STRONG FRONTAL CONVERGENCE. STEEP LAPSE
RATES IN EXCESS OF 8C/KM WILL ENHANCE THE OTHERWISE GUSTY WINDS
ASSOCIATED WITH THE FROPA AND RESULT IN A FEW GUSTS TO AOA 50KT
PARTICULARLY VICINITY THUNDERSTORMS THAT DEVELOP.
TIMING WOULD BRING THE FROPA TO THE WASATCH FRONT OF NRN UT BETWEEN
00-02Z.
..HALES/PETERS.. 04/13/2011
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@LISTSERV.ILLINOIS.EDU with
"unsub wx-storm" in the body of your message. For more information write cnovy@cox.net.
No comments:
Post a Comment