SWODY1
SPC AC 161558
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0958 AM CST WED DEC 16 2009
VALID 161630Z - 171200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
INTRUSION OF ARCTIC SURFACE AIR WILL INHIBIT DEEP MOIST CONVECTION
ACROSS MOST OF THE CONUS THROUGH THE PERIOD...WITH THE EXCEPTION OF
SOUTH FL AHEAD OF MAIN SURFACE COLD FRONT. AIRMASS AHEAD OF THE
FRONT WILL LIKELY BECOME MODERATELY UNSTABLE AND SUPPORT SCATTERED
THUNDERSTORMS THIS AFTERNOON/EVENING OVER S FL. ALTHOUGH SEVERE
POTENTIAL WILL REMAIN LOW GIVEN WEAK SHEAR/LAPSE RATES. IN
ADDITION...FORECAST SOUNDINGS SUGGEST COASTAL WA/NWRN ORE MAY
EXPERIENCE ISOLATED LOW-TOPPED THUNDERSTORMS WITHIN BROADER AREA OF
SHALLOW MOIST CONVECTION TODAY.
..EVANS.. 12/16/2009
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