[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 261741
SWOMCD
SPC MCD 261740 
CAZ000-262045-

MESOSCALE DISCUSSION 2361
NWS STORM PREDICTION CENTER NORMAN OK
1240 PM CDT TUE OCT 26 2004

AREAS AFFECTED...PORTION OF THE SRN SIERRA MOUNTAINS

CONCERNING...HEAVY SNOW 

VALID 261740Z - 262045Z

SNOWFALL RATES WILL INCREASE TO 2-3 IN/HOUR BY 18 OVER ERN MADERA/
NERN FRESNO COUNTIES...AND THEN ACROSS THE REST OF ERN FRESNO COUNTY
BY 21Z.  SNOW LEVELS OVER THESE AREAS WILL INITIALLY BE AT 6000-7000
FEET...BEFORE FALLING BY LATE AFTERNOON TO AROUND 5500 FEET.

IR IMAGERY SHOWED A 90 MILE WIDE FRONTAL CLOUD BAND EXTENDING FROM
THE CENTRAL CA COAST TO WRN NV.  THIS CLOUD BAND IS ASSOCIATED WITH
LARGE SCALE ASCENT WITHIN THE EXIT REGION OF A WLY 65 KT MID-LEVEL
JET NOSING INTO THE CENTRAL CA COAST ATTM...AS A STRONG UPPER TROUGH
DIGS SEWD ALONG AND JUST OFF THE CA COAST.  TVL WHICH IS LOCATED ON
THE NRN PORTION OF THIS CLOUD BAND HAS REPORTED MAINLY HEAVY SNOW
SINCE 14Z WITH RATES AROUND 2 IN/HR.  AS THE UPPER TROUGH CONTINUES
TO MOVE SWD TODAY...850-700 MB FLOW IS EXPECTED TO VEER TO SWLY
ACROSS ERN MADERA/ERN FRESNO COUNTIES...RESULTING IN MORE FAVORABLE
UPSLOPE FLOW TO ENHANCE DEEP LAYER ASCENT/SNOWFALL RATES.

..PETERS.. 10/26/2004

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

ATTN...WFO...VEF...REV...HNX...

36771893 37231924 37391941 37731956 37911938 38001922
37771900 37181854 36801835 36771877 

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