HAZARDOUS WEATHER OUTLOOK
Issue Date: 437 AM MST FRI DEC 25 2009
Expiration: 445 AM MST SAT DEC 26 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
MONTANA...SOUTH CENTRAL MONTANA...SOUTHEAST MONTANA AND NORTH
CENTRAL WYOMING.
.DAY ONE...TODAY AND TONIGHT
A MAJOR STORM SYSTEM OVER THE UPPER MIDWEST WILL BRING WINTER
WEATHER TO SOUTHEAST AND PORTIONS OF SOUTH CENTRAL MONTANA...AND
NORTH CENTRAL WYOMING TODAY THROUGH SATURDAY. SNOW IS ALREADY
FALLING OVER EASTERN AREAS THIS MORNING...AND WILL INTENSIFY AND
SPREAD WESTWARD TODAY. HEAVY SNOW ACCUMULATIONS ARE EXPECTED OVER
SOUTHEAST MONTANA...WITH LIGHT TO MODERATE ACCUMULATIONS OVER
PORTIONS OF SOUTH CENTRAL MONTANA AND NORTH CENTRAL WYOMING.
IN ADDITION TO THE SNOWFALL...STRONG NORTHERLY WINDS OF 20 TO 35
MPH WILL PRODUCE SIGNIFICANT BLOWING AND DRIFTING SNOW. THIS WILL
REDUCE VISIBILITY MAKING TRAVEL HAZARDOUS. COLD TEMPERATURES
COMBINED WITH THE STRONG WINDS WILL ALSO CREATE DANGEROUS WIND
CHILL VALUES OF 20 TO 40 BELOW ZERO AT TIMES.
EXPECT DIFFICULT TRAVEL BEGINNING THIS AFTERNOON ON I-90 FROM CROW
AGENCY SOUTHWARD THROUGH SHERIDAN COUNTY.
TRAVEL ON I-94 MAY BECOME IMPOSSIBLE THIS AFTERNOON EAST OF
FORSYTH DUE TO HEAVY SNOW AND BLOWING SNOW.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
SNOWFALL WILL BEGIN TO TAPER OFF FROM WEST TO EAST SATURDAY
MORNING. GUSTY WINDS WILL CONTINUE THROUGH THE AFTERNOON WITH BLOWING
AND DRIFTING SNOW LIKELY INTO SATURDAY EVENING. SIGNIFICANT
IMPROVEMENT IS EXPECTED SATURDAY EVENING IN ALL LOCATIONS.
.SPOTTER INFORMATION STATEMENT...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
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