SWODY1
SPC AC 141624
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1024 AM CST SAT NOV 14 2009
VALID 141630Z - 151200Z
...NO SVR TSTM AREAS FORECAST...
...FOUR CORNERS TO PORTIONS OF THE CNTRL/SRN PLAINS...
A SHORT WAVE TROUGH OVER THE GREAT BASIN WILL DIG SEWD TOWARDS THE
SRN ROCKIES THROUGH EARLY SUN. WEAK LEE CYCLOGENESIS IS EXPECTED
OVER THE SRN HIGH PLAINS DOWNSTREAM FROM THIS TROUGH...WHILE A
SURFACE COLD FRONT FROM NERN OK INTO NWRN TX DRIFTS SWD AND BECOMES
QUASI-STATIONARY. LOW-LEVEL WARM/MOIST ADVECTION WILL STRENGTHEN
INVOF THIS BOUNDARY DURING THE EVENING/OVERNIGHT...AS POLEWARD
TRANSPORT OF A MODIFYING CONTINENTAL AIR MASS CONTINUES FROM THE WRN
GULF OF MEXICO ACROSS THE SRN PLAINS.
SPORADIC LIGHTNING STRIKES SHOULD OCCUR THIS AFTERNOON INVOF THE
FOUR CORNERS WHERE MEAGER INSTABILITY COINCIDES WITH FORCED ASCENT
DOWNSTREAM FROM THE SHORT WAVE TROUGH. THE THREAT FOR ELEVATED
THUNDERSTORMS IS MORE UNCERTAIN TONIGHT FARTHER E ACROSS THE PLAINS
WHERE MID-LEVEL INSTABILITY WILL BE QUITE MARGINAL.
HOWEVER...STRENGTHENING LOWER-LEVEL MOISTENING/ASCENT MAY BE
SUFFICIENT FOR A FEW TSTMS DEVELOPING LATE IN THE PERIOD ACROSS SRN
KS/NRN OK.
..GRAMS/HART.. 11/14/2009
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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