SWOMCD
SPC MCD 092303
AZZ000-100500-
MESOSCALE DISCUSSION 0078
NWS STORM PREDICTION CENTER NORMAN OK
0503 PM CST MON FEB 09 2009
AREAS AFFECTED...N CNTRL AZ/ MOGOLLON RIM
CONCERNING...HEAVY SNOW
VALID 092303Z - 100500Z
PERIODS OF HEAVY SNOW WILL CONTINUE ACROSS NRN AZ WITH RATES AROUND
2 IN/HR LIKELY PRIMARILY ABOVE 5000 FT ELEVATION.
A STRONG UPPER LEVEL VORTICITY MAXIMUM WAS MOVING EWD ACROSS SERN CA
AS OF 23Z...AND WILL CONTINUE EWD ACROSS AZ. STRONG DEEP LAYER LIFT
ASSOCIATED WITH THIS TROUGH...AS WELL AS SWLY UPSLOPE FLOW...WILL
CREATE FAVORABLE CONDITIONS FOR INCREASING HEAVY SNOW RATES THROUGH
THE EVENING. SPECIFICALLY...STRONG VERTICAL MOTION IN THE 700-600 MB
LAYER SHOULD PROMOTE PROLIFIC DENDRITE PRODUCTION. THE HEAVIEST SNOW
AMOUNTS WILL OCCUR FROM FLG SEWD ALONG THE MOGOLLON RIM. IN
ADDITION...STRONG SW WINDS IN EXCESS OF 30 MPH WILL PRODUCE
CONSIDERABLE BLOWING SNOW AND REDUCED VISIBILITY.
..JEWELL.. 02/09/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
...NOTICE...
SPC WINTER WEATHER MESOSCALE DISCUSSIONS WILL BE ISSUED ON A
SCHEDULED BASIS FROM DECEMBER 1 THROUGH FEBRUARY 28...FOUR
TIMES A DAY...AROUND 00 UTC...06 UTC...12 UTC...AND 18 UTC
FOR SIGNIFICANT SHORT RANGE WINTER WEATHER EVENTS.
ATTN...WFO...FGZ...PSR...VEF...
LAT...LON 34671348 35631340 35711266 35921183 35091125 34541052
34301009 33801025 33671111 34171183 34371269 34461313
34671348
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