ACUS01 KWNS 230547
SWODY1
SPC AC 230545
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1245 AM CDT WED OCT 23 2013
VALID 231200Z - 241200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
A HIGHLY AMPLIFIED LONGWAVE PATTERN WILL REMAIN OVER THE CONUS
DURING THE PERIOD...HIGHLIGHTED BY UPPER TROUGHING/EXTENSIVE
CYCLONIC FLOW EAST OF THE ROCKIES. THE PREVALENCE OF COOL/STABLE
CONDITIONS OVER THE CONUS WILL CONSIDERABLY LIMIT THE EXTENT AND
LIKELIHOOD OF DEEPER CONVECTION AND TSTMS.
ACROSS SOUTH FL...ISOLATED TSTMS WILL BE POSSIBLE ESPECIALLY LATE
THIS MORNING/AFTERNOON WITHIN A MOIST AIRMASS ALONG AND AHEAD OF A
SOUTHEASTWARD ADVANCING COLD FRONT. WEAKENING CONVERGENCE AND
RELATIVELY POOR LAPSE RATES/MODEST BUOYANCY SHOULD TEMPER UPDRAFT
VIGOR...WITH SEVERE TSTMS NOT EXPECTED.
ELSEWHERE...LAKE INDUCED/ENHANCED LOW-TOPPED CONVECTION MAY BE
SUFFICIENTLY DEEP/FAVORABLE TO PRODUCE VERY ISOLATED LIGHTNING
STRIKES IN VICINITY OF LAKES ERIE AND ONTARIO...PERHAPS ESPECIALLY
TONIGHT.
..GUYER.. 10/23/2013
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