Saturday, January 17, 2009

DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 170549
SWODY1
SPC AC 170548

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1148 PM CST FRI JAN 16 2009

VALID 171200Z - 181200Z

...NO TSTM AREAS FORECAST...

...SYNOPSIS...
HIGHLY AMPLIFIED UPR FLOW REGIME WILL CONTINUE THROUGH SATURDAY WITH
A RIDGE OVER THE ERN PAC AND A DEEP COLD TROUGH OVER ERN NOAM. THE
TROUGH WILL BE REINFORCED BY A COUPLE OF SHORTWAVE TROUGHS EXPECTED
TO DIG SEWD FROM CNTRL CANADA AND THE UPR GRTLKS INTO THE ERN STATES
THROUGH SATURDAY NIGHT. PRIMARY SFC CYCLONE ASSOCD WITH THE
CLIPPERS WILL DEVELOP OVER THE GRTLKS WITH ANOTHER STRONG COLD FRONT
TRANSLATING SEWD INTO THE OH/TN VLYS AND NWRN GULF CST BY 12Z/18.

...NWRN GULF CSTL REGION...
RETURN FLOW AHEAD OF THE APCHG CDFNT WILL ADVECT MODIFIED GULF
BOUNDARY LAYER NWD INTO THE NWRN GULF CSTL REGION SATURDAY AND
SATURDAY NIGHT. PRE-FRONTAL SURGE OF MODEST THETA-E MAY SUPPORT
SCTD SHOWERS FROM THE UPR TX CST NEWD INTO SRN LA AFT 09Z/18. FCST
SOUNDINGS INDICATE THAT THE MORE ROBUST CONVECTION SHOULD BE
CONFINED TO THE GULF WATERS...WITH RISKS FOR ISOLD TSTMS.

..RACY.. 01/17/2009

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