SPC AC 190510
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1110 PM CST SUN JAN 18 2009
VALID 201200Z - 211200Z
...NO TSTM AREAS FORECAST...
...SYNOPSIS...
IN MID-UPPER LEVELS...HIGH-AMPLITUDE ERN TROUGH/WRN RIDGE PATTERN
WILL CONTINUE THROUGH PERIOD. HOWEVER...SLOW DEGRADATION OF WRN
CONUS RIDGING IS FCST AS NERN PACIFIC UPPER LOW APCHS CA COAST...AND
STG SHORTWAVE TROUGH DIGS SEWD FROM AK ACROSS NRN BC.
MEANWHILE...SHORTWAVE TROUGH -- NOW EVIDENT IN MOISTURE CHANNEL
IMAGERY INVOF MB COAST -- IS FCST TO DIG SSEWD ACROSS MS VALLEY
DAY-1...PIVOTING EWD ACROSS DEEP S STATES EARLY IN DAY-2
PERIOD...THEN MOVING OFFSHORE CAROLINAS WITH POSITIVE TILT BY
21/00Z.
IN RESPONSE...SECONDARY LOW LEVEL FRONTOGENESIS IS FCST ACROSS FL
PENINSULA BEHIND INITIAL SFC FRONTAL ZONE DESCRIBED IN DAY-1
OUTLOOK. ALTHOUGH BAND OF CLOUDS AND PERHAPS PRECIP MAY ACCOMPANY
BELT OF FRONTOGENETIC FORCING OVER CENTRAL/SRN FL EARLY IN
PERIOD...PRIND DEEP-LAYER LAPSE RATES AND LOW LEVEL MOISTURE EACH
WILL BE TOO WEAK TO SUPPORT GEN TSTM THREAT OVER LAND.
..EDWARDS.. 01/19/2009
CLICK TO GET WUUS02 PTSDY2 PRODUCT
NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 1730Z
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