SWODY1
SPC AC 300052
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0652 PM CST SAT DEC 29 2007
VALID 300100Z - 301200Z
..NO SVR TSTM AREAS FORECAST...
..CENTRAL GULF COAST/SERN STATES...
WATER VAPOR IMAGERY INDICATED A SHORT WAVE TROUGH LOCATED OVER SW TX
EARLY THIS EVENING. THIS FEATURE WILL TRANSLATE THROUGH THE BASE OF
A BROAD LONG WAVE TROUGH IN PLACE ACROSS THE CONUS...REACHING ERN
TX/ARKLATEX REGION BY 12Z SUNDAY. SWLY LOW LEVEL WINDS EXTENDING
FROM THE NWRN GULF ACROSS THE MS DELTA REGION TO GA/SC ARE EXPECTED
TO STRENGTHEN TONIGHT IN RESPONSE TO HEIGHT FALLS AHEAD OF THE
APPROACHING SW TX SHORT WAVE TROUGH. THIS WILL ALLOW A SURFACE
BOUNDARY...WHICH CURRENTLY EXTENDED FROM A LOW IN WRN NC SWWD
THROUGH SWRN GA TO THE NRN/WRN GULF...TO RETREAT SLOWLY NWD AND
EXTEND FROM NRN GA TO SERN AL/MS DELTA INTO NWRN GULF BY 12Z SUNDAY.
WEAK ISENTROPIC ASCENT/WARM AIR ADVECTION ALONG AND N OF THIS
BOUNDARY COMBINED WITH ASCENT ATTENDANT TO APPROACHING TX TROUGH AND
A FEW WEAK SUB-TROPICAL IMPULSES TRACKING NEWD IN VICINITY OF
SURFACE BOUNDARY SHOULD SUPPORT ADDITIONAL SHOWERS/EMBEDDED TSTMS
OVERNIGHT ACROSS CENTRAL GULF COAST AND SERN STATES. DESPITE AN
INCREASE IN LOW LEVEL MOISTURE ALONG AXIS OF LLJ AIDING IN
DESTABILIZATION AND AN OVERALL INCREASE IN TSTM ACTIVITY
OVERNIGHT...WEAK INSTABILITY IS EXPECTED TO LIMIT THE OVERALL THREAT
FOR SEVERE WEATHER. HOWEVER...GIVEN SWLY MID LEVEL WINDS AT 50-70
KT LOCATED ALONG AND NORTH OF SURFACE BOUNDARY...A FEW ORGANIZED
STORMS APPEAR POSSIBLE THIS FORECAST PERIOD.
.PETERS.. 12/30/2007
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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