Winter Weather Warnings / Watches / Advisories
Issued by NWS Missoula, MT

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WWUS45 KMSO 201746
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1028 AM MST SAT DEC 20 2014

...ATMOSPHERIC RIVER TO BRING HEAVY MOUNTAIN SNOW...

.AN ATMOSPHERIC RIVER WILL BRING ABUNDANT MOISTURE TO THE
NORTHERN ROCKIES TONIGHT THROUGH LATE SUNDAY WITH PERIODS OF
MODERATE TO HEAVY MOUNTAIN PASS SNOWFALL. SNOW LEVELS WILL
INITIALLY BEGIN AS LOW AS 3000 FT THIS AFTERNOON THEN GRADUALLY
RISE TO NEAR 5000 FEET ON SUNDAY MORNING AND UP TO 6000 FEET ON
SUNDAY AFTERNOON...THUS SNOW WILL CHANGE OVER RAIN OR A RAIN AND
SNOW MIX FOR MANY LOWER ELEVATION PASSES ON SUNDAY MORNING.
PRECIPITATION WILL BECOME MORE SHOWERY ON SUNDAY NIGHT BUT WILL
CONTINUE FOR MANY LOCATIONS.

MTZ002-006-007-043-211200-
/O.UPG.KMSO.WS.A.0012.141221T0100Z-141222T1200Z/
/O.NEW.KMSO.WW.Y.0072.141221T0200Z-141222T1200Z/
WEST GLACIER REGION-BITTERROOT/SAPPHIRE MOUNTAINS-
BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY LAKE REGION-
1028 AM MST SAT DEC 20 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
5 AM MST MONDAY...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND SLICK ROADS...WHICH IS IN EFFECT
FROM 7 PM THIS EVENING TO 5 AM MST MONDAY. THE WINTER STORM WATCH
IS NO LONGER IN EFFECT.

* * IMPACTS/TIMING: HEAVY WET SNOW WILL IMPACT AREA PASSES THIS
  EVENING THROUGH LATE SUNDAY. HEAVY SNOW FOLLOWED BY RAIN COULD
  MAKE MOUNTAIN ROADS VERY DIFFICULT OR DANGEROUS TO TRAVEL ON AT
  TIMES. LOLO AND LOST TRAIL PASSES WILL MOST LIKELY BE
  IMPACTED... WITH IMPACTS ALSO POSSIBLE AT HOMESTAKE...
  MCDONALD... AND MARIAS PASSES. MANY HIGHER ELEVATION LOCATIONS
  SUCH AS GEORGETOWN LAKE AND SEELEY LAKE MAY RECEIVE SEVERAL
  INCHES OF SNOW ALSO.

* SNOW ACCUMULATIONS: LOLO AND LOST TRAIL PASSES WILL BE MOST
  IMPACTED WITH EXPECTED SNOW ACCUMULATIONS OF 6-12 INCHES IN 24
  HOURS. HOMESTAKE... MCDONALD... AND MARIAS PASSES SHOULD SEE 2-8
  INCHES IN 24 HOURS.

* LOCATIONS IMPACTED INCLUDE...BAD ROCK CANYON...ESSEX...HIGHWAY
  83 BIGFORK TO SWAN LAKE...MARIAS PASS...POLEBRIDGE...HIGHWAY
  93 SULA TO LOST TRAIL PASS...LOLO PASS...BUTTE...GEORGETOWN
  LAKE...HIGHWAY 12 GARRISON TO ELLISTON...HOMESTAKE PASS...
  MACDONALD PASS...HIGHWAY 200 BONNER TO GREENOUGH...HIGHWAY 83
  SEELEY LAKE TO CONDON...I-90 EAST MISSOULA TO BEARMOUTH

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.

&&

$$

IDZ005-006-010-MTZ004-211200-
/O.UPG.KMSO.WS.A.0012.141221T0100Z-141222T1200Z/
/O.NEW.KMSO.WW.Y.0072.141220T2200Z-141222T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
EASTERN LEMHI COUNTY-LOWER CLARK FORK REGION-
1028 AM MST SAT DEC 20 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM MST /2 PM PST/
THIS AFTERNOON TO 5 AM MST /4 AM PST/ MONDAY ABOVE 4000 FEET...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND SLICK ROADS ABOVE 4000 FEET...
WHICH IS IN EFFECT FROM 3 PM MST /2 PM PST/ THIS AFTERNOON TO 5 AM
MST /4 AM PST/ MONDAY. THE WINTER STORM WATCH IS NO LONGER IN
EFFECT.

* * IMPACTS/TIMING: HEAVY WET SNOW TO IMPACT AREA PASSES TONIGHT
  THROUGH LATE SUNDAY. HEAVY SNOW FOLLOWED BY RAIN COULD MAKE
  MOUNTAIN ROADS VERY DIFFICULT OR DANGEROUS TO TRAVEL ON AT
  TIMES. LOOKOUT... LOLO... AND LOST TRAIL PASSES WILL MOST LIKELY
  BE IMPACTED. MANY HIGHER ELEVATION LOCATIONS SUCH AS ELK CITY...
  DIXIE... AND GILMORE SUMMIT IN CENTRAL IDAHO MAY RECEIVE
  SEVERAL INCHES OF SNOW ALSO.

* SNOW ACCUMULATIONS: LOOKOUT... LOLO... AND LOST TRAIL PASSES
  WILL BE MOST IMPACTED WITH EXPECTED SNOW ACCUMULATIONS OF 6-12
  INCHES IN 24 HOURS. ELK CITY... DIXIE... AND GILMORE SUMMIT MAY
  ALSO RECEIVE 3-6 INCHES IN 24 HOURS. PORTIONS OF THE SALMON
  RIVER VALLEY MAY ALSO SEE A SLUSHY INCH OR TWO OF SNOW MAINLY
  TONIGHT.

* LOCATIONS IMPACTED INCLUDE...DIXIE...ELK CITY...BANNOCK PASS...
   HIGHWAY 28 TENDOY TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS
  TO GIBBONSVILLE...LEMHI PASS...EVARO HILL

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.

&&

$$

IDZ009-211200-
/O.NEW.KMSO.WW.Y.0072.141220T2200Z-141222T1200Z/
WESTERN LEMHI COUNTY-
1028 AM MST SAT DEC 20 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO
5 AM MST MONDAY ABOVE 4000 FEET...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND SLICK ROADS ABOVE 4000 FEET...
WHICH IS IN EFFECT FROM 3 PM THIS AFTERNOON TO 5 AM MST MONDAY.

* IMPACTS/TIMING:HEAVY WET SNOW TO IMPACT AREA MOUNTAINS TONIGHT
  THROUGH LATE SUNDAY. HEAVY SNOW FOLLOWED BY RAIN COULD MAKE
  MOUNTAIN ROADS VERY DIFFICULT OR DANGEROUS TO TRAVEL ON AT
  TIMES.

* SNOW ACCUMULATIONS: HIGHER ELEVATIONS SUCH AS WILLIAMS CREEK
  SUMMIT WILL BE MOST IMPACTED WITH SNOW ACCUMULATIONS 6-12 INCHES
  IN 24 HOURS.

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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