SWODY1
SPC AC 281625
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1025 AM CST FRI NOV 28 2008
VALID 281630Z - 291200Z
...NO SVR TSTM AREAS FORECAST...
BAND OF FAST ZONAL FLOW EXTENDS ACROSS THE SOUTHERN UNITED
STATES...WITH WATER VAPOR IMAGERY SHOWING MULTIPLE SHORTWAVE TROUGHS
EMBEDDED IN FLOW. ONE TROUGH IS NOW ANALYZED OVER EAST TX/WESTERN
LA. THIS FEATURE IS PROMOTING WEAK CYCLOGENESIS WEST OF SHV.
SCATTERED THUNDERSTORMS ARE LIKELY TO PERSIST IN THIS REGION THROUGH
THE AFTERNOON...SPREADING INTO MS BY EVENING. LOW LEVEL MOISTURE
HAS BEEN INCREASING ALONG AND SOUTH OF E-W QUASI-STATIONARY BOUNDARY
WITH DEWPOINTS IN THE MID 60S NOW PRESENT. VISIBLE SATELLITE
IMAGERY SUGGESTS POCKETS OF HEATING WILL OCCUR OVER SOUTHEAST
TX/SOUTHERN LA/SOUTHERN MS WHERE AFTERNOON MLCAPE VALUES OF 750-1000
J/KG WILL BE POSSIBLE. A SLIGHT INCREASE IN LOW LEVEL VERTICAL
SHEAR IS FORECAST DURING THE AFTERNOON...WHICH MAY RESULT IN A FEW
STRONG STORMS ACROSS THE REGION. GUSTY WINDS APPEAR TO BE THE MAIN
THREAT...WITH A BRIEF TORNADO POSSIBLE. HOWEVER...AREAL COVERAGE OF
RISK APPEARS TOO LOW TO WARRANT A CATEGORICAL SEVERE RISK TODAY.
AREA WILL BE RE-EVALUATED AT 20Z.
..HART/JEWELL.. 11/28/2008
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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