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935
WWUS45 KMSO 211121
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
421 AM MST SUN DEC 21 2014

MTZ002-006-007-043-212100-
/O.CON.KMSO.WW.Y.0072.000000T0000Z-141222T1200Z/
WEST GLACIER REGION-BITTERROOT/SAPPHIRE MOUNTAINS-
BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY LAKE REGION-
421 AM MST SUN DEC 21 2014

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY.

* IMPACTS/TIMING: MODERATE TO HEAVY WET SNOW WILL TRANSITION TO
  SHOWERS BY THIS AFTERNOON. THERE MAY BE A BRIEF PERIOD THAT
  PASSES SEE A MIXTURE OR CHANGE TO RAIN THIS MORNING BUT THEN
  WILL GO BACK TO PERIODS OF SNOW THIS AFTERNOON. STRONG GUSTY
  WINDS COMBINED WITH SNOW SHOWERS ACROSS SOUTHWEST MONTANA WILL
  REDUCE VISIBILITIES MAKING FOR TOUGH TRAVEL AT TIMES THIS
  AFTERNOON.

* ADDITIONAL SNOW ACCUMULATIONS: 4 TO 6 INCHES AT LOOKOUT...LOLO
  AND LOST TRAIL PASSES. 1 TO 4 INCHES AT MACDONALD...MARIAS AND
  HOMESTAKE PASSES AND ACROSS THE GEORGETOWN LAKE AND SEELEY LAKE
  AREAS.

* LOCATIONS IMPACTED INCLUDE...POLEBRIDGE...ESSEX...MARIAS
  PASS...HIGHWAY 83 CONDON TO SEELEY LAKE...HIGHWAY 93 SULA TO
  LOST TRAIL PASS...LOLO PASS...GEORGETOWN LAKE...HIGHWAY 12
  ELLISTON TO MACDONALD PASS...BUTTE TO HOMESTAKE PASS...HIGHWAY
  200 GREENOUGH TO CLEARWATER

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

IDZ005-006-009-010-MTZ004-212100-
/O.CON.KMSO.WW.Y.0072.000000T0000Z-141222T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY-LOWER CLARK FORK REGION-
421 AM MST SUN DEC 21 2014

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST /4 AM
PST/ MONDAY ABOVE 4000 FEET...

A WINTER WEATHER ADVISORY ABOVE 4000 FEET REMAINS IN EFFECT UNTIL
5 AM MST /4 AM PST/ MONDAY.

* IMPACTS/TIMING:HEAVY SNOW WILL TRANSITION TO SNOW SHOWERS BY
  THIS AFTERNOON. MOUNTAIN ROADS WILL BE VERY DIFFICULT OR
  DANGEROUS TO TRAVEL ON AT TIMES ESPECIALLY LOLO AND LOST TRAIL
  PASSES AND AT GILMORE SUMMIT.

* ADDITIONAL SNOW ACCUMULATIONS: 4 TO 6 INCHES AT LOLO PASS...LOST
  TRAIL PASSES AND AT THE WILLIAMS CREEK SUMMIT. GILMORE SUMMIT
  COULD SEE AN ADDITIONAL 1 TO 3 INCHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$




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