[MCD] SWOMCD

Mon Sep 4 19:12:57 UTC 2006

ACUS11 KWNS 041914
SWOMCD
SPC MCD 041914 
CAZ000-042115-

MESOSCALE DISCUSSION 1931
NWS STORM PREDICTION CENTER NORMAN OK
0214 PM CDT MON SEP 04 2006

AREAS AFFECTED...SRN CA

CONCERNING...HEAVY RAINFALL 

VALID 041914Z - 042115Z

GOES SATL SOUNDER SUGGESTS THAT 1.50-1.75 INCH PWAT VALUES WERE
ESTABLISHED OVER THE LOWER DESERTS OF SWRN AZ INTO SRN CA THIS AFTN.
 STRONG HEATING HAS DESTABILIZED THE BOUNDARY LAYER WITH SBCAPES IN
THE 1500-2000 J/KG RANGE.  NASCENT CB/S WERE OBSERVED ALONG THE
CREST OF THE SRN CA MOUNTAINS FROM SRN SAN BERNARDINO COUNTY SWD TO
ERN SAN DIEGO COUNTY AND ARE COINCIDENT WITH GENTLE ELY UPSLOPE
FLOW.  TSTMS SHOULD GRADUALLY DEVELOP AND MOVE SWWD INTO THE INLAND
VLYS OF SRN CA THROUGH LATE AFTN.  THE HIGH PWATS IN PLACE AND
RELATIVELY WEAK TROPOSPHERIC FLOW WILL FAVOR HEAVY
RAINFALL...PARTICULARLY WHERE STORMS TRAIN/DEVELOP VCNTY MESOSCALE
BOUNDARIES/CONVERGENCE ZONES. RELATIVELY DRY SUB-CLOUD LAYER WILL
ALSO BE CONDUCIVE FOR PSBL ISOLD DAMAGING WIND GUSTS.

..RACY.. 09/04/2006

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

ATTN...WFO...SGX...

32561687 32921696 33271715 34001718 34321696 33491658
32611659 

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