...PLEASE SEE WWW.SPC.NOAA.GOV/ FOR GRAPHIC PRODUCT...
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ZCZC SPCSWOMCD ALL
ACUS11 KWNS 181452
SPC MCD 181452
MTZ000-NDZ000-182100-

SPC MESOSCALE DISCUSSION 0413 FOR PORTIONS OF ERN MT AND ND
CONCERNING...HEAVY SNOW...

SNOW ACCUMULATION RATES UP TO 1 INCH PER HOUR WILL BE
POSSIBLE FROM
ECENTRAL/SERN MT ENEWD ACROSS PORTIONS OF WRN AND CENTRAL ND
OVER
THE NEXT 6 HOURS.

A WELL DEFINED MID LEVEL DEFORMATION SIGNATURE IS APPARENT
ON IR
IMAGERY ACROSS ERN MT AND WRN ND. MORNING 700 MB ANALYSIS
INDICATED
THE PRESENCE OF A CLOSED LOW NEAR THE ND/MT BORDER. BOTH
VISIBLE
AND IR IMAGERY FURTHER SUPPORT THE EXISTENCE OF THIS
FEATURE.
MODERATELY STRONG MID LEVEL FRONTOGENESIS AHEAD OF THIS
LOW...IN
THE RIGHT ENTRANCE REGION OF THE UPPER LEVEL JET WILL
CONTINUE TO
AID IN THE DEVELOPMENT AND INTENSIFICATION OF BANDS OF
MODERATE TO
HEAVY SNOW FROM ECENTRAL MT NEWD TO NEAR DEVILS LAKE IN
NCENTRAL
ND. AS THE MID LEVEL LOW MOVES ENEWD TO NEAR FAR BY
18/21Z....
EXPECT HEAVY SNOWFALL TO BE POSSIBLE TO THE NORTH OF THE MID
LEVEL
LOW TRACK. THE GREATEST THREAT FOR HEAVY SNOW SHOULD BE 30
MILES
EITHER SIDE OF AN AXIS FROM 20 N OF DIK TO DVL WHERE THE
AFOREMENTIONED MODERATELY STRONG MID LEVEL FRONTOGENESIS
WILL BE
THE MOST FOCUSED. THE 14Z SURFACE WET-BULB ZERO ISOTHERM
EXTENDING
FROM SWRN ND TO NEAR DVL WILL SHIFT SWD AS STRONG LOW LEVEL
CAA
CONTINUES. 20-30 MPH NWLY WINDS WILL CREATE AREAS OF BLOWING
AND
DRIFTING SNOW.
 

..CROSBIE.. 04/18/02

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