SWODY2
SPC AC 291728
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1128 AM CST SAT DEC 29 2007
VALID 301200Z - 311200Z
..NO SVR TSTM AREAS FORECAST...
..SRN GA/ERN CAROLINAS/FL PANHANDLE...
A BROAD UPPER-LEVEL TROUGH WILL REMAIN IN PLACE ACROSS THE CONUS
TONIGHT AND SUNDAY AS SEVERAL SHORTWAVE TROUGHS PASS EWD THROUGH THE
FLOW. THE FIRST SHORTWAVE TROUGH WILL DEAMPLIFY AND MOVE EWD ACROSS
THE NERN STATES AS ANOTHER SYSTEM DEEPENS IN THE MID MS VALLEY
REGION SUNDAY. AT THE SFC...A SLOW MOVING COLD FRONT WILL MOVE SEWD
ACROSS THE CAROLINAS AND GA. SCATTERED THUNDERSTORMS SHOULD BE
ONGOING ALONG THE BOUNDARY AND STORMS MAY EXPAND IN COVERAGE BY
AFTERNOON DUE TO INCREASING LOW-LEVEL FLOW AND SFC HEATING. SOME
MOISTURE ADVECTION WILL LIKELY OCCUR ACROSS THE FL PANHANDLE AND SRN
GA AS A LOW-LEVEL JET MOVES NEWD ACROSS THE REGION. IN
ADDITION...STRONG LOW-LEVEL SHEAR PROFILES WILL BE IN PLACE WHICH
COMBINED WITH DESTABILIZATION MAY RESULT IN A MARGINAL SEVERE THREAT
ACROSS PARTS OF SRN GA...ERN SC AND THE FL PANHANDLE. HOWEVER...THE
WINDOW FOR ANY SEVERE THREAT WILL LIKELY BE VERY SHORT. IF THE
TIMING OF THE APPROACHING WAVE IS FAVORABLE AND STORMS DEVELOP WITH
ACCESS TO THE GREATEST INSTABILITY THEN A FEW DAMAGING WIND GUSTS
WILL BE POSSIBLE ACROSS THE REGION.
ELSEWHERE...A LOW-AMPLITUDE SHORTWAVE TROUGH IS FORECAST TO AFFECT
THE PACIFIC NORTHWEST TONIGHT INTO SUNDAY WITH AN IMPRESSIVE 110 KT
MID-LEVEL JET MOVING INLAND. STEEP LAPSE RATES AND STRONG
LARGE-SCALE ASCENT ASSOCIATED WITH THE TROUGH WILL LIKELY SUPPORT
SOME THUNDERSTORMS HOWEVER THE ACTIVITY IS NOT EXPECTED TO HAVE A
SEVERE THREAT.
.BROYLES.. 12/29/2007
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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