[MCD] SWOMCD

[Mesoscale Convective Discussions]

ACUS11 KWNS 011256
SWOMCD
SPC MCD 011255 
MTZ000-011630-

MESOSCALE DISCUSSION 0001
NWS STORM PREDICTION CENTER NORMAN OK
0655 AM CST SUN JAN 01 2006

AREAS AFFECTED...PARTS OF NRN INTO ERN MT

CONCERNING...FREEZING RAIN 

VALID 011255Z - 011630Z

A NARROW ZONE OF FREEZING RAIN IS EXPECTED TO DEVELOP THIS MORNING
WITHIN A CORRIDOR FROM NORTH CENTRAL MT /LIBERTY TO BLAINE COUNTIES/
SEWD INTO CUSTER COUNTY.  RATES SHOULD RANGE FROM 0.05-0.1 INCH PER
3 HOURS.

12Z SURFACE ANALYSIS INDICATED A LEE TROUGH EXTENDING FROM SRN
ALBERTA SEWD ACROSS CENTRAL MT TO ERN WY.  SURFACE TEMPERATURES
ALONG/E OF THIS BOUNDARY WERE BELOW 32 F AND GENERALLY IN THE
MID-UPPER 20S. 12Z SOUNDING AT GGW SHOWED A LAYER OF WARM AIR WITH
TEMPERATURES ABOVE 32 F LOCATED ATOP THE SUB-FREEZING SURFACE
TEMPERATURES.  DEEP LAYER ASCENT ASSOCIATED WITH A SHORT WAVE TROUGH
MOVING NEWD ACROSS CENTRAL MT THIS MORNING SHOULD AID IN ADDITIONAL
MOISTENING AND SUPPORT AN INCREASE IN PRECIPITATION.  THERMODYNAMIC
PROFILES PER SHORT TERM FORECAST SOUNDINGS SUGGEST PRECIPITATION
SHOULD REMAIN IN THE FORM OF MAINLY FREEZING RAIN THROUGH 18Z IN THE
DISCUSSION AREA.

..PETERS.. 01/01/2006

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

ATTN...WFO...BYZ...GGW...TFX...

49041191 48990832 48440739 46720511 45970456 45670629
46820826 47981051 

WWWW