[MCD] SWOMCD

Wed Dec 14 05:06:26 UTC 2005

ACUS11 KWNS 140503
SWOMCD
SPC MCD 140503 
MNZ000-IAZ000-141000-

MESOSCALE DISCUSSION 2554
NWS STORM PREDICTION CENTER NORMAN OK
1103 PM CST TUE DEC 13 2005

AREAS AFFECTED...NCNTRL IA...SCNTRL MN

CONCERNING...HEAVY SNOW 

VALID 140503Z - 141000Z

SNOWFALL RATES MAY APPROACH 1 INCH PER HOUR IN NORTH CENTRAL IOWA
AND SOUTH CENTRAL MINNESOTA FROM 06Z/14 - 10Z/14. SURFACE
OBSERVATIONS OVER THE PAST FEW HOURS HAVE INDICATED A TREND TOWARDS
MODERATE SNOWFALL IN NORTH CENTRAL IOWA.

A STRONG SHORTWAVE TROUGH LOCATED OVER EASTERN KANSAS AND EASTERN
NEBRASKA IS PROVIDING AN AREA OF STRONG UPWARD VERTICAL MOTION OVER
PORTIONS OF NORTH CENTRAL IOWA AND SOUTH CENTRAL MINNESOTA. 00Z NAM
AND 00Z RUC BOTH AGREE THAT THIS AREA OF STRONG LIFT WILL STRENGTHEN
FOR THE NEXT SEVERAL HOURS OVER THE REGION...AND GIVEN THE ABUNDANCE
OF LOW-LEVEL MOISTURE...SOME AREAS MAY SEE SNOWFALL RATES INCREASE
TO AT OR NEAR 1 INCH PER HOUR DURING THE TIME WHEN THE VERTICAL
MOTION IS STRONGEST. THE AXIS OF GREATEST LIFT...AND HENCE HEAVY
SNOW...WILL PIVOT TOWARDS THE NORTHEAST THROUGH THE NEXT SEVERAL
HOURS BEFORE WEAKENING BY 12Z/14.

..LEVIT.. 12/14/2005

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

ATTN...WFO...DVN...ARX...MPX...DMX...FSD...

44899461 43949517 42899497 42089354 42299213 43709212
44789310 

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