Thursday, November 18, 2010

DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 181628
SWODY1
SPC AC 181626

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1026 AM CST THU NOV 18 2010

VALID 181630Z - 191200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
RATHER BENIGN PATTERN ACROSS THE CONUS WITH A CONTINENTAL POLAR AIR
MASS AND RELATIVELY COOL/DRY OFFSHORE FLOW ACROSS THE ATLANTIC AND
GULF COASTS. SOME LOW-MIDLEVEL MOISTURE AND INSTABILITY REMAIN OVER
S FL...BUT THE PRIMARY WIND SHIFT AND FOCUS FOR DEEP CONVECTION WILL
REMAIN OVER THE FL STRAITS. OTHERWISE...A STRONG UPPER TROUGH WITH
500 MB TEMPERATURES AROUND -35C IS OVERSPREADING THE PAC NW. LOW
TOPPED CONVECTION IS ASSOCIATED WITH THE MIDLEVEL COLD POOL AND
RELATIVELY STEEP LAPSE RATES...AND ISOLATED LIGHTNING STRIKES COULD
OCCUR TODAY ALONG THE WA/NW ORE COASTS.

..THOMPSON/STOPPKOTTE.. 11/18/2010

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