[MCD] SWOMCD

[Mesoscale Convective Discussions]

ACUS11 KWNS 222105
SWOMCD
SPC MCD 222104 
NVZ000-CAZ000-222300-

MESOSCALE DISCUSSION 1611
NWS STORM PREDICTION CENTER NORMAN OK
0404 PM CDT SAT JUL 22 2006

AREAS AFFECTED...PORTIONS OF THE SRN SIERRAS/COASTAL RANGE AND
DESERTS OF CA INTO SWRN NV

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 222104Z - 222300Z

ISOLATED DOWNBURSTS ARE EXPECTED THROUGH THE AFTERNOON HOURS WITH
DEEP INVERTED-V THERMODYNAMIC PROFILES ACROSS PORTIONS OF SRN CA
INTO SWRN NV. OVERALL CONVECTIVE COVERAGE IS EXPECTED TO REMAIN
LIMITED ENOUGH THAT A WW IS NOT ANTICIPATED...HOWEVER TRENDS WILL
CONTINUE TO BE MONITORED.

A WELL-DEFINED MCV IN VIS IMAGERY IS CURRENTLY ROTATING SLOWLY NWWD
ACROSS THE LOWER CO RIVER VALLEY. ISOLATED TSTMS HAVE DEVELOPED
AHEAD OF THIS FEATURE...ALONG THE HIGHER TERRAIN OF THE SRN CA
COASTAL RANGE NEWD INTO THE SRN SIERRAS...AS WELL AS ACROSS PORTIONS
OF THE MOJAVE DESERT. VERY HOT TEMPERATURES FROM 105 TO 120 DEGREES
WITH DEW POINTS IN THE MID 40S TO MID 50S ARE CREATING DEEP
INVERTED-V SIGNATURES IN MODIFIED RUC SOUNDINGS. DCAPES OF 1500 TO
2000 J/KG WILL SUPPORT DOWNBURST WINDS IN ANY SUSTAINED CELLS. A 43
KT WIND GUST WAS REPORTED AT SDB WITHIN THE PAST HOUR. WEAK WIND
SHEAR WILL LIMIT STORM ORGANIZATION...WITH STRONGER MID-LEVEL ELY
FLOW CONTAINED ALONG AND SOUTH OF THE MEXICAN BORDER.

..GRAMS.. 07/22/2006

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...PSR...VEF...SGX...REV...HNX...LOX...

33741675 34371777 34551886 34771950 35161932 35521884
36531858 37161879 38001964 38481898 37931765 37171606
35171536 

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