SWOMCD
SPC MCD 082258
UTZ000-AZZ000-NVZ000-CAZ000-090000-
MESOSCALE DISCUSSION 1618
NWS STORM PREDICTION CENTER NORMAN OK
0558 PM CDT SUN AUG 08 2010
AREAS AFFECTED...SRN NV/NWRN AZ/SRN AND CNTRL UT
CONCERNING...SEVERE THUNDERSTORM WATCH 588...
VALID 082258Z - 090000Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 588
CONTINUES.
THE THREAT OF SEVERE THUNDERSTORMS PRIMARILY CAPABLE OF DMGG WINDS
CONTINUE ACROSS PORTIONS OF SRN NV...NWRN AZ...AND MUCH OF UT.
STORMS CONTINUE TO DEVELOP IN RESPONSE TO SUBTLE UPPER FORCING IN
ASSOCIATION WITH A WEAK VORT MAX NOW SEEN ON WV IMAGERY MOVING INTO
SRN CA/NV. A THERMAL TROUGH EXTENDS FROM THE SONORAN DESERT NWWD
INTO SAN JOAQUIN VALLEY...WITH ANOTHER PORTION EXTENDING NWD INTO
THE GREAT BASIN. THIS APPEARS TO BE THE FAVORED AREA OF SURFACE
CONVERGENCE AND INSTABILITY FOR THUNDERSTORM INITIATION AND
MAINTENANCE. ALTHOUGH SRN CA REMAINS DRIER...SELY LOW LEVEL FLOW
AROUND THE PERIPHERY OF A SURFACE HIGH OVER THE FOUR CORNERS REGION
HAS MAINTAINED GREATER MOISTURE ACROSS THE WW AREA...WHICH SHOULD BE
FAVORABLE FOR CONTINUED THUNDERSTORM DEVELOPMENT. SELY WINDS VEERING
TO SWLY ALOFT WILL SUPPORT OCCASIONAL/BRIEF STORM ROTATION WITH
STRONGER CORES...WITH DMGG WINDS AND ISOLATED HAIL POSSIBLE.
..HURLBUT.. 08/08/2010
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...GJT...FGZ...SLC...PSR...VEF...LKN...
LAT...LON 34321335 34251403 34911465 35921575 38121594 38061505
38671496 38671409 39901409 39821127 38521132 38500997
38160993 37141096 36951222 36971242 36531267 36011327
34321335
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