[MCD] SWOMCD

Sat Mar 11 16:20:11 UTC 2006

ACUS11 KWNS 111621
SWOMCD
SPC MCD 111621 
CAZ000-112115-

MESOSCALE DISCUSSION 0235
NWS STORM PREDICTION CENTER NORMAN OK
1021 AM CST SAT MAR 11 2006

AREAS AFFECTED...HEAVY SNOW IN HIGHER ELEVATIONS OF SOUTHERN CA

CONCERNING...HEAVY SNOW 

VALID 111621Z - 112115Z

HEAVY SNOW WILL CONTINUE THROUGH THE AFTERNOON ACROSS THE HIGHER
ELEVATIONS OF SOUTHERN CA...INCLUDING THE SAN GABRIEL/SAN
BERNARDINO/SAN JACINTO/LAGUNA MOUNTAINS...MAINLY ABOVE 2000-2500 FT.
SNOW RATES OF 2 IN/HR WILL BE COMMON...WITH 3 IN/HR POSSIBLE WITH
THE MORE INTENSE CONVECTIVE ELEMENTS.

IN PRESENCE OF STRONG/DEEP UPPER TROUGH PER WV IMAGERY...RATHER COLD
VERTICAL PROFILES EXIST ACROSS SOUTHERN CA AS EVIDENCED BY 12Z RAOBS
FROM VANDENBERG/EDWARDS AFB/SAN DIEGO THIS MORNING. MESONET
OBSERVATIONS/REPORTS ARE ALREADY INDICATIVE OF SNOW LEVELS AS LOW AS
2000-2500 FT...WITH RELATIVELY LITTLE FLUCTUATION EXPECTED PER
LATEST FORECAST SOUNDINGS. STRONG JET DYNAMICS/OROGRAPHIC ASCENT
WILL CONTINUE TO FAVOR HEAVY SNOW ACROSS THE MOUNTAINS OF SOUTHERN
CA THROUGH THE AFTERNOON. FURTHERMORE...EVIDENCED VIA 12Z OBSERVED
RAOBS AND CG LIGHTNING FOCUSED ALONG THE SOUTHERN CA COAST...STEEP
LAPSE RATES WILL CONTRIBUTE TO CONVECTIVELY ENHANCED SNOW RATES WITH
LOCALLY LOWER SNOW LEVELS.

..GUYER.. 03/11/2006

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

ATTN...WFO...VEF...SGX...LOX...

33921653 33681640 33251642 32671635 32701675 33331698
33861729 34031756 34101782 34431777 34341678 

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