SWOMCD
SPC MCD 240147 COR
UTZ000-AZZ000-NVZ000-CAZ000-240315-
MESOSCALE DISCUSSION 1961
NWS STORM PREDICTION CENTER NORMAN OK
0847 PM CDT SUN AUG 23 2009
AREAS AFFECTED...PARTS OF SERN CA...SRN NV...WRN AZ
CONCERNING...SEVERE THUNDERSTORM WATCH 732...
VALID 240147Z - 240315Z
CORRECTED FOR GRAPHIC POINTS
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 732
CONTINUES.
THE NEED FOR A NEW WW IS NOT CURRENTLY ANTICIPATED...AND THE SEVERE
THREAT IN THE CURRENT WATCH MAY DIMINISH BEFORE 06Z.
STORMS HAVE WEAKENED/DIMINISHED CONSIDERABLY DURING THE PAST HOUR OR
SO ACROSS PARTS OF THE MOHAVE DESERT INTO THE LOWER COLORADO VALLEY.
DESPITE FAVORABLE LARGE-SCALE ASCENT AHEAD OF A MID-LEVEL TROUGH
PROGRESSING INTO SOUTHERN CALIFORNIA...WEAK LOW/MID-LEVEL WIND
FIELDS AND SHEAR HAVE LIMITED THE DURATION OF THE INDIVIDUAL
STORMS...AND THE OVERALL ORGANIZATION OF CONVECTIVE DEVELOPMENT.
WHILE...ISOLATED SHORT-LIVED STRONG/SEVERE STORMS REMAIN POSSIBLE
...THESE ARE EXPECTED TO BECOME INCREASINGLY SPARSE IN COVERAGE WITH
THE ONSET OF DIURNAL BOUNDARY LAYER COOLING THROUGH 02-04Z.
..KERR.. 08/24/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...FGZ...SLC...PSR...VEF...
LAT...LON 37191527 37201274 33491337 33471580 37191527
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