SWODY2
SPC AC 160551
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1251 AM CDT MON MAR 16 2009
VALID 171200Z - 181200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
A WEAK UPPER TROUGH WILL CONTINUE CROSSING THE ERN U.S. THIS
PERIOD...MOVING OFF THE ATLANTIC COAST WITH TIME.
MEANWHILE...DOWNSTREAM FLOW FIELD ACROSS THE CONUS WILL TREND
ZONAL...WITH ONLY A VERY FLAT TROUGH CROSSING THE N CENTRAL
U.S./CANADA BORDER REGION.
AT THE SURFACE...A WEAK FRONT WILL CONTINUE MOVING SWD ACROSS
FL...WHILE A STRONGER FRONT MOVES EWD ACROSS THE UPPER GREAT LAKES
AND MORE SLOWLY SWD ACROSS THE CENTRAL U.S. THROUGH THE END OF THE
PERIOD.
...UPPER GREAT LAKES REGION...
MODEST BOUNDARY-LAYER MOISTURE AND A CAPPED WARM SECTOR AHEAD OF AN
APPROACHING COLD FRONT SHOULD GREATLY HINDER CONVECTIVE POTENTIAL
THIS PERIOD. WEAK CONVECTION -- WITHIN MINIMALLY-UNSTABLE
ENVIRONMENT OVER PARTS OF THE UPPER GREAT LAKES REGION -- MAY
EVENTUALLY DEVELOP INVOF THE SURFACE FRONT FROM LATE AFTERNOON
ONWARD. LACK OF FAVORABLE INSTABILITY HOWEVER PRECLUDES APPRECIABLE
SEVERE POTENTIAL.
...SERN FL...
SHOWERS AND AN ISOLATED STORM OR TWO MAY OCCUR INVOF THE SWD-MOVING
FRONT...WHERE A MOIST/WEAK LAPSE RATE ENVIRONMENT IS ANTICIPATED.
..GOSS.. 03/16/2009
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