ACUS01 KWNS 100057
SWODY1
SPC AC 100054
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0754 PM CDT SUN SEP 09 2012
VALID 100100Z - 101200Z
...NO SVR TSTM AREAS FORECAST...
...LOWER CO RIVER VALLEY/SOUTHERN CA...
UPPER LOW WILL CONTINUE TO DRIFT SLOWLY OVER NORTHERN BAJA THROUGH
TONIGHT. A VERY MOIST AIRMASS IS IN PLACE ACROSS THE REGION PER 00Z
OBSERVED SOUNDINGS...BUT ESPECIALLY ACROSS FAR SOUTHERN CA...WHERE
THE SAN DIEGO/MIRAMAR SOUNDING FEATURED A VERY HIGH 1.97 INCH PW
VALUE /WELL ABOVE CLIMO 90TH PERCENTILE/. A LOOSE CLUSTER OF
TSTMS/ASSOCIATED COLD POOL ARE PROPAGATING WEST-NORTHWESTWARD EARLY
THIS EVENING ACROSS SOUTHWEST AZ/LOWER CO RIVER VALLEY...AND A 56 KT
WIND GUST WAS MEASURED AT YUMA AZ AROUND 0032Z. OTHER ISOLATED TSTMS
ARE OCCURRING NEAR THE SOCAL MOUNTAINS. A FEW STRONG TSTMS WILL
REMAIN POSSIBLE FOR A SHORT TIME THIS EVENING /PERHAPS 02Z-03Z/
WITHIN A HOT/MOIST BOUNDARY LAYER...WITH GUSTY/NEAR-SEVERE WINDS THE
PRIMARY HAZARD ASIDE FROM LOCALLY HEAVY RAINFALL.
...ELSEWHERE...
FOR THE FL PENINSULA...ISOLATED/WIDELY SCATTERED SHOWERS AND A FEW
TSTMS WILL REMAIN POSSIBLE TONIGHT ALONG/SOUTH OF A COLD FRONT.
HOWEVER...TSTM POTENTIAL/COVERAGE WILL CONTINUE TO STEADILY DIMINISH
INLAND AS THE BOUNDARY LAYER SLOWLY COOLS.
OTHER NON-SEVERE TSTMS WILL PERSIST ACROSS THE GREAT BASIN...BUT ON
AN INCREASINGLY ISOLATED BASIS THIS EVENING. A FEW OTHER TSTMS MAY
OCCUR ACROSS PORTIONS OF NORTHERN MT.
..GUYER.. 09/10/2012
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