SPC AC 062000
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0200 PM CST SUN DEC 06 2009
VALID 062000Z - 071200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS/FORECAST...
FEW CHANGES TO PRIOR FORECAST REASONING. SPATIAL COVERAGE OF LOW
PROBABILITY OF TSTMS TONIGHT WAS REDUCED ACROSS TX/LA OWING TO
LIMITED PROSPECTS FOR CHARGE SEPARATION WITHIN THE ELEVATED CAPE
BEARING LAYER...WITH SHOWERY NON-LIGHTNING PRODUCING CONVECTION
EXPECTED TO BE DOMINANT ESPECIALLY INLAND AWAY FROM COASTAL AREAS.
..GUYER.. 12/06/2009
.PREV DISCUSSION... /ISSUED 1008 AM CST SUN DEC 06 2009/
VIGOROUS COLD UPPER VORT/LOW DROPPING SWD ALONG W COAST TO NRN CA BY
MON AM AS DOWNSTREAM SYSTEM OVER UT WILL QUICKLY DEAMPLIFY AND RACE
EWD ACROSS CENTRAL PLAINS TONIGHT. RETURN FLOW OFF NWRN GULF OF
MEXICO UNDERWAY IN RESPONSE TO APPROACH OF UT IMPULSE AND ASSOCIATED
STRONG MID/UPR JET MAX.
WHILE SURFACE INSTABILITY WILL BE NEGLIGIBLE...SUFFICIENT ELEVATED
CAPE EXPECTED TO DEVELOP BY TONIGHT WITHIN THE PLUME OF GULF
MOISTURE AT THE 850MB LEVEL TO RESULT IN A LOW THREAT OF
THUNDERSTORMS...SERN TX INTO LA.
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0100Z
|
