SWODY3
SPC AC 160744
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0144 AM CST WED JAN 16 2008
VALID 181200Z - 191200Z
..NO SVR TSTM AREAS FORECAST...
..SYNOPSIS...
A NEGATIVELY TITLED SHORTWAVE TROUGH IS FORECAST TO LIFT FROM TX/OK
NEWD INTO THE MID MS VALLEY...RESULTING IN THE DEEPLY AMPLIFIED
LONGWAVE TROUGH OVER THE CENTRAL PORTIONS OF THE CONUS TO SHIFT INTO
THE MS/OH/TN VALLEYS. DUE TO A STRONG THERMAL GRADIENT ALOFT ...AN
EXTREMELY BROAD AND POWERFUL HIGH LEVEL JET...WITH WIND SPEEDS FROM
150 TO 180 KT...WILL EXTEND FROM TX NEWD INTO THE MID ATLANTIC
STATES.
THE LEADING EDGE OF THE COLD AIR AT THE SURFACE SHOULD REMAIN MOSTLY
SOUTH OF THE MAINLAND FROM THE WRN GULF NEWD ACROSS THE CENTRAL FL
PENINSULA. THE COLD...DRY AIR MASS NORTH OF THIS BOUNDARY WILL
PRECLUDE THUNDER OVER A MAJORITY OF THE COUNTRY. THE EXCEPTION WILL
BE ACROSS THE SERN STATES WHERE MOISTURE ADVECTION AND VERY WEAK
INSTABILITY ARE EXPECTED. AS THE JET MAX LIFTS NEWD DURING THE
PERIOD WITH THE SHORTWAVE TROUGH...INCREASING DIVERGENCE ALOFT IN
ASSOCIATION WITH THE RIGHT ENTRANCE REGION OF THE UPPER JET SHOULD
RESULT IN WIDESPREAD PCPN AND EMBEDDED THUNDERSTORMS. SINCE THE
STRONGER FORCING IS EXPECTED TO BE WELL NORTH OF THE SURFACE
BOUNDARY AND INSTABILITY WILL BE MEAGER...THE SEVERE POTENTIAL
SHOULD BE LIMITED.
.IMY.. 01/16/2008
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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