[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 181315
SWOMCD
SPC MCD 181315 
MNZ000-NDZ000-181715-

MESOSCALE DISCUSSION 0110
NWS STORM PREDICTION CENTER NORMAN OK
0715 AM CST TUE JAN 18 2005

AREAS AFFECTED...NWRN/N-CENTRAL MN AND NERN ND

CONCERNING...HEAVY SNOW 

VALID 181315Z - 181715Z

REGION OF MODERATE TO HEAVY SNOW IS EXPECTED TO TRACK ESEWD ACROSS
NERN ND REACHING N-CENTRAL MN BY 18Z. SNOW RATES OF 1"/HR LASTING
AROUND 2 HOURS IS LIKELY...WITH CONSIDERABLE BLOWING SNOW ASSOCIATED
WITH WIND GUSTS TO 45 MPH.

AT 13Z...RADAR TRENDS CONTINUE TO INCREASE RAPIDLY ACROSS NERN ND IN
ADVANCE OF CLIPPER TYPE SURFACE LOW NEAR THE SRN
SASKATCHEWAN/MANITOBA BORDER. THE LOW WILL RACE ESEWD AT 45KT
REACHING NWRN ONTARIO BY 18Z. SYSTEM IS BRINGING LEADING EDGE OF
PACIFIC AIR INTO THE REGION...REPLACING ARCTIC AIR MASS IN PLACE
ACROSS THE UPPER MS RIVER VALLEY. A SWD EXTENDING CHINOOK TYPE WARM
FRONT STRETCHED ACROSS THE W-CENTRAL DAKOTAS INTO THE NEB PANHANDLE
AT 13Z. ISENTROPIC ASCENT AND STRONG MID-LEVEL PVA WILL SUSTAIN N-S
BAND OF MODERATE TO HEAVY SNOW IN ADVANCE OF WARM FRONT.

SURFACE OBSERVATIONS FROM THE DISCUSSION AREA ALREADY INDICATE SLY
SURFACE WIND GUSTS TO 40 MPH. COMBINED WITH TEMPERATURES IN THE
TEENS AND SMALL WATER CONTENT TO SNOW...CONSIDERABLE BLOWING AND
DRIFTING OF SNOWFALL IS LIKELY THROUGH 18Z. FAST MOVEMENT OF SYSTEM
WILL LIMIT PERIOD OF LOCALLY HEAVY SNOW TO 2-3 HOURS...ALTHOUGH LOW
VISIBILITY ASSOCIATED WITH STRONG WINDS AND BLOWING SNOW COULD
LINGER INTO THE AFTERNOON HOURS AS WINDS BECOME WLY WITH FRONTAL
PASSAGE.

..BANACOS.. 01/18/2005

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

...NOTICE...
SPC WINTER WEATHER MESOSCALE DISCUSSIONS WILL BE ISSUED ON A 
SCHEDULED BASIS...FOUR TIMES A DAY...BETWEEN 00-01 UTC...
06-07 UTC...12-13 UTC...AND 18-19 UTC AS SIGNIFICANT SHORT
RANGE WINTER WEATHER EVENTS UNFOLD.  THIS SCHEDULE WILL BE
USED FROM DECEMBER 1 THROUGH FEBRUARY 28.

ATTN...WFO...DLH...FGF...

48939525 48889744 48789799 47819776 47569711 47529600
47289500 47169388 47649318 48039287 48359263 

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