Monday, January 14, 2008

DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 141253
SWODY1
SPC AC 141251

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0651 AM CST MON JAN 14 2008

VALID 141300Z - 151200Z

..NO SVR TSTM AREAS FORECAST...

..SYNOPSIS/FORECAST...
AN AMPLIFIED SPLIT FLOW PATTERN WILL PREVAIL OVER THE CONUS THIS
PERIOD. MEAN TROUGH WILL PERSIST OVER THE GRT LKS/NORTHEAST...WHILE
NW U.S. RIDGE PROGRESSES SE TO THE RCKYS/NRN PLNS AND CLOSED SYSTEM
SETTLES S INTO NW MEXICO. ERN TROUGH IS COMPLEX BUT SLOWLY
PROGRESSIVE. MAIN VORT LOBE OF INTEREST...NOW LOCATED S OF RI PER
SATELLITE...SHOULD CONTINUE NE TODAY BEFORE TURNING MORE NNE THIS
EVENING AS THE FEATURE NEARS NOVA SCOTIA.

SATELLITE/RADAR DATA SUGGEST THAT WEAK CONVECTIVE INSTABILITY IS
PRESENT IN THE 700-500 MB LAYER EXTENDING N OF THE VORT INTO ERN
MA/CSTL NH AND SW ME. THIS INSTABILITY AXIS SHOULD DIMINISH AND
SHIFT E WITH TIME TODAY AS ASSOCIATED SFC LOW MOVES E AWAY FROM CAPE
COD. EMBEDDED ELEVATED CONVECTION MAY SUFFICIENTLY DEEPEN TO YIELD
ISOLD CG LIGHTNING STRIKES OVER FAR ERN MA AS HEAVY SNOW FALLS OVER
THE REGION TIL ABOUT MID MORNING.

ELSEWHERE...CONDITIONS APPEAR UNFAVORABLE FOR TSTMS THIS PERIOD.

.CORFIDI.. 01/14/2008

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