[MCD] SWOMCD

[Mesoscale Convective Discussions]

ACUS11 KWNS 041852
SWOMCD
SPC MCD 041852 
WAZ000-042315-

MESOSCALE DISCUSSION 0123
NWS STORM PREDICTION CENTER NORMAN OK
1252 PM CST SAT FEB 04 2006

AREAS AFFECTED...WA CASCADES

CONCERNING...HEAVY SNOW AND NEAR BLIZZARD CONDITIONS 

VALID 041852Z - 042315Z

HEAVY SNOW WILL CONTINUE ACROSS THE WA CASCADES THROUGH THE
AFTERNOON...WITH SNOW RATES OF 2-3 IN/HR POSSIBLE. 

WATER VAPOR IMAGERY DEPICTS CORE OF UPPER TROUGH MOVING ONSHORE THE
PACIFIC NORTHWEST...WITH SNOW EXPECTED TO CONTINUE ACROSS THE WA
CASCADES INTO EARLY EVENING. LATEST MESONET OBSERVATIONS AUGMENTED
BY 00 HOUR RUC SOUNDINGS SUGGESTS SNOW LEVELS ARE CURRENTLY AROUND
3500 FT. AS VERTICAL PROFILES CONTINUE TO COOL...LATEST RUC FORECAST
SOUNDINGS SUGGEST SNOW LEVELS SHOULD FALL TO AROUND 2000-2500 FT BY
EARLY EVENING. STRONG UVVS COINCIDENT WITH DEEP DENDRITIC LAYER AND
HIGH PW ENVIRONMENT WILL SUPPORT HEAVY SNOW THROUGH THE
AFTERNOON...WITH SNOW RATES OF 2-3 IN/HR POSSIBLE INTO EARLY
EVENING. ADDITIONALLY...STRONG WESTERLY WINDS OF 50-60 KTS SAMPLED
IN 2-5 KM LAYER IN ACARS SOUNDINGS /EAST OF SEATTLE/ WILL CREATE
BLIZZARD LIKE CONDITIONS.

..GUYER.. 02/04/2006

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

ATTN...WFO...OTX...PDT...SEW...PQR...

48972088 48592062 47242106 46662131 46212161 46162200
46282221 46482224 47052197 47322170 48032166 48442196
48712211 48962205 

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