Winter Storm Warning 12, NWS Missoula, MT

809 
WWUS45 KMSO 192306
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
406 PM MST MON DEC 19 2016

MTZ002-202315-
/O.CAN.KMSO.WS.W.0011.000000T0000Z-161220T0000Z/
/O.CAN.KMSO.WW.Y.0066.000000T0000Z-161220T0300Z/
/O.CON.KMSO.WW.Y.0067.161220T1000Z-161221T0700Z/
406 PM MST MON DEC 19 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM TUESDAY TO
MIDNIGHT MST TUESDAY NIGHT...
...WINTER STORM WARNING IS CANCELLED...
...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER
STORM WARNING. THE WINTER WEATHER ADVISORY HAS BEEN CANCELLED. 

* IMPACTS/TIMING: PERIODS OF SNOW AND BLOWING SNOW ARE POSSIBLE
  ALONG US-2 THIS EVENING AND ESPECIALLY OVER MARIAS PASS. HOWEVER
  SIGNIFICANT IMPACTS ARE NO LONGER ANTICIPATED THIS EVENING.
  ANOTHER MODERATE SNOW EVENT IS EXPECTED TUESDAY CREATING MORE
  SLICK WINTRY DRIVING CONDITIONS. LOCAL BLOWING AND DRIFTING SNOW
  WILL OCCUR TUESDAY, BUT MAINLY OVER MARIAS PASS AND HIGHER
  TERRAIN AND THUS A WINTER WEATHER ADVISORY GOES INTO EFFECT AT 3
  AM TUESDAY MORNING.

* SNOW ACCUMULATIONS: 1 TO 2 INCHES THROUGH TONIGHT. AN ADDITIONAL
  4 TO 6 INCHES IS EXPECTED IN THE VALLEYS TUESDAY AND 8 TO 10
  INCHES OVER THE TERRAIN AND MOUNTAIN PASSES. 

* WINDS: WEST TO SOUTHWEST BETWEEN 10 AND 20 MPH WITH GUSTS TO 
  50 MPH ALONG THE US-2 CORRIDOR EAST OF WEST GLACIER TO MARIAS 
  PASS CAUSING BLOWING AND DRIFTING SNOW AND REDUCED VISIBILITY. 

* LOCATIONS IMPACTED INCLUDE: BAD ROCK CANYON, ESSEX, HIGHWAY 83 
  BIGFORK TO SWAN LAKE, MARIAS PASS, AND POLEBRIDGE

$$

MTZ006-202315-
/O.CAN.KMSO.WW.Y.0066.000000T0000Z-161220T0300Z/
/O.CON.KMSO.WS.W.0012.161220T0900Z-161221T0600Z/
406 PM MST MON DEC 19 2016

...WINTER STORM WARNING REMAINS IN EFFECT FROM 2 AM TO 11 PM MST
TUESDAY FOR HIGHWAY 93 SULA TO LOST TRAIL PASS AND LOLO PASS...
...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER
WEATHER ADVISORY. 

* IMPACTS/TIMING: PERIODS OF LIGHT TO MODERATE SNOW WILL OCCUR
  INTO EARLY THIS EVENING. THIS FLUFFY SNOW ON TOP OF BLACK ICE OR
  PACKED SNOW WILL CREATE SLICK CONDITIONS. SLICK DRIVING
  CONDITIONS AND LOW VISIBILITY WILL FURTHER DETERIORATE LATE
  TONIGHT AND TUESDAY WITH PERIODS OF HEAVY SNOW.

* SNOW ACCUMULATIONS: GENERALLY 1 TO 3 INCHES INTO THIS EVENING. 
  AN ADDITIONAL 12 TO 15 INCHES OF SNOW IS EXPECTED LATE TONIGHT 
  AND TUESDAY. 

* WINDS: WINDS IN THE VALLEYS WILL REMAIN LIGHTER, HOWEVER,
  SOUTHWEST WINDS BETWEEN 15 AND 25 MPH WITH GUSTS TO 40 MPH WILL
  INCREASE TONIGHT IN THE HIGHER ELEVATIONS PRODUCING SOME BLOWING
  SNOW ACROSS MOUNTAIN ROADS. 

$$

MTZ004-202315-
/O.CAN.KMSO.WW.Y.0066.000000T0000Z-161220T0300Z/
/O.CON.KMSO.WS.W.0012.161220T0700Z-161221T0600Z/
406 PM MST MON DEC 19 2016

...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 11 PM MST TUESDAY...
...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER
WEATHER ADVISORY. 

* IMPACTS/TIMING: SNOW WILL INCREASE AFTER MIDNIGHT AND BECOME
  HEAVY AT TIMES BY EARLY TUESDAY MORNING WITH PERIODS OF HEAVY
  SNOW CONTINUING THROUGH MUCH OF TUESDAY. PATCHES OF FREEZING
  RAIN IS POSSIBLE TUESDAY MORNING AS WELL. THE HEAVY SNOW WILL
  REDUCE VISIBILITY AND CREATE VERY SLICK ROAD CONDITIONS. BLOWING
  AND DRIFTING SNOW IS EXPECTED AT TIMES OVER THE HIGHER TERRAIN
  AND LOOKOUT PASS.

* SNOW ACCUMULATIONS: AN ADDITIONAL 12 TO 14 INCHES OF SNOW IS
  EXPECTED BEGINNING LATE TONIGHT AND CONTINUING THROUGH TUESDAY
  OVER THE TERRAIN AND LOOKOUT PASS. ELSEWHERE...3 TO 5 INCHES OF
  SNOW IS EXPECTED TUESDAY FROM ALBERTON TO SUPERIOR AS WELL AS
  EVARO HILL...AND 5 TO 9 INCHES FROM SAINT REGIS TO HAUGAN.

* WINDS: WEST TO SOUTHWEST WINDS BETWEEN 10 AND 20 MPH WITH 
  GUSTS TO 30 MPH IS EXPECTED IN THE HIGHER ELEVATIONS INCLUDING 
  LOOKOUT PASS. 

* LOCATIONS IMPACTED INCLUDE: EVARO HILL, HIGHWAY 200 THOMPSON 
  FALLS TO PLAINS, HIGHWAY 200 TROUT CREEK TO HERON, AND I- 90 
  LOOKOUT PASS TO HAUGAN

$$

IDZ005-006-202315-
/O.CAN.KMSO.WW.Y.0066.000000T0000Z-161220T0300Z/
/O.CON.KMSO.WS.W.0012.161220T0700Z-161221T0600Z/
306 PM PST MON DEC 19 2016

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 10 PM PST TUESDAY...
...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER
WEATHER ADVISORY. 

* IMPACTS/TIMING: SLICK DRIVING CONDITIONS AND LOW VISIBILITY WILL
  FURTHER DETERIORATE LATE TONIGHT AND TUESDAY WITH PERIODS OF
  HEAVY SNOW.

* SNOW ACCUMULATIONS: AN ADDITIONAL 12 TO 20 INCHES OF SNOW IS
  EXPECTED OVER THE HIGHER TERRAIN LATE TONIGHT AND TUESDAY. IN
  THE VALLEYS 4 TO 12 INCHES OF SNOW IS EXPECTED TUESDAY.

* WINDS: WINDS IN THE VALLEYS WILL REMAIN LIGHTER, HOWEVER, 
  SOUTHWEST WINDS BETWEEN 15 AND 25 MPH WITH GUSTS TO 40 MPH 
  WILL INCREASE TONIGHT IN THE HIGHER ELEVATIONS PRODUCING SOME 
  BLOWING SNOW ACROSS MOUNTAIN ROADS. 

* LOCATIONS IMPACTED INCLUDE: ELK RIVER, HIGHWAY 11 PIERCE TO 
  HEADQUARTERS, PIERCE, DIXIE, ELK CITY, AND HIGHWAY 12 LOWELL 
  TO LOLO PASS

$$

MTZ001-003-202315-
/O.CAN.KMSO.WW.Y.0066.000000T0000Z-161220T0300Z/
/O.CON.KMSO.WW.Y.0067.161220T1000Z-161221T0100Z/
406 PM MST MON DEC 19 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM TO 6 PM
MST TUESDAY...
...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER
WEATHER ADVISORY. 

* IMPACTS/TIMING: SNOW WILL CONTINUE TO DECREASE THIS EVENING AND
  THUS THE FIRST WINTER WEATHER ADVISORY HAS BEEN CANCELLED. 
  HOWEVER, ANOTHER PERIOD OF MODERATE SNOWFALL IS EXPECTED 
  TUESDAY. THE SNOW MAY TRANSITION TO A WINTRY MIX AT TIMES WITH 
  PATCHES OF FREEZING LIGHT RAIN POSSIBLE TUESDAY MORNING.

* SNOW ACCUMULATIONS: AN ADDITIONAL 2 TO 4 INCHES OF SNOW IS
  EXPECTED TUESDAY, EXCEPT UP TO 8 TO 10 INCHES OVER THE HIGHER
  TERRAIN.

* WINDS: SOUTHWEST WINDS BETWEEN 10 AND 20 MPH WITH GUSTS TO 30 
  MPH IN THE HIGHER ELEVATIONS PRODUCING SOME BLOWING SNOW 
  ACROSS ROADS. 

* LOCATIONS IMPACTED INCLUDE: HIGHWAY 2 KALISPELL TO LIBBY, 
  HIGHWAY 37 EUREKA TO LIBBY, HIGHWAY 56 BULL LAKE ROAD, HIGHWAY 
  93 EUREKA TO WHITEFISH, FLATHEAD LAKE, FLATHEAD VALLEY, 
  MISSION VALLEY, AND POLSON

$$

MTZ043-202315-
/O.CAN.KMSO.WW.Y.0066.000000T0000Z-161220T0300Z/
/O.CON.KMSO.WW.Y.0067.161220T1000Z-161221T0700Z/
406 PM MST MON DEC 19 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM TUESDAY TO
MIDNIGHT MST TUESDAY NIGHT...
...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER
WEATHER ADVISORY. 

* IMPACTS/TIMING: PERIODS OF LIGHT SNOW AND SLICK WINTRY DRIVING
  CONDITIONS WILL CONTINUE INTO EARLY THIS EVENING. HOWEVER
  ADDITIONAL IMPACTS WILL BE MINIMAL AND THUS THE FIRST WINTER
  WEATHER ADVISORY HAS BEEN CANCELLED. ANOTHER PERIOD OF MODERATE
  SNOW AND SLICK WINTRY DRIVING CONDITIONS IS EXPECTED AT TIMES ON
  TUESDAY.

* SNOW ACCUMULATIONS: AN ADDITIONAL 5 TO 9 INCHES IS EXPECTED
  TUESDAY.

* WINDS: WINDS IN THE VALLEYS WILL REMAIN GENERALLY CALM. 
  HOWEVER, SOUTHWEST WINDS BETWEEN 10 AND 20 MPH WITH GUSTS TO 
  30 MPH WILL INCREASE TONIGHT IN THE HIGHER ELEVATIONS 
  PRODUCING SOME BLOWING SNOW ACROSS MOUNTAIN ROADS. 

* LOCATIONS IMPACTED INCLUDE: HIGHWAY 200 BONNER TO GREENOUGH, 
  HIGHWAY 83 SEELEY LAKE TO CONDON, AND I-90 EAST MISSOULA TO 
  BEARMOUTH

$$

IDZ009-010-201900-
/O.CON.KMSO.WW.Y.0067.161220T1000Z-161220T1900Z/
406 PM MST MON DEC 19 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM TO NOON
MST TUESDAY...

* IMPACTS/TIMING: ANOTHER PERIOD OF LIGHT TO MODERATE SNOW AND 
  SLICK WINTRY DRIVING CONDITIONS IS EXPECTED LATE TONIGHT AND 
  TUESDAY. IN ADDITIONAL, PATCHY FREEZING RAIN IS POSSIBLE FROM 
  THE SALMON AREA TO NORTH FORK STORE. 

* SNOW ACCUMULATIONS: 2 TO 4 INCHES OF SNOW IN THE VALLEYS AND 6 
  TO 12 INCHES OVER THE HIGHER TERRAIN TUESDAY. 

* LOCATIONS IMPACTED INCLUDE: SHOUP, BANNOCK PASS, HIGHWAY 28 
  TENDOY TO LONE PINE, HIGHWAY 93 LOST TRAIL PASS TO 
  GIBBONSVILLE, LEMHI PASS, AND SALMON

$$

MTZ005-201700-
/O.CON.KMSO.WW.Y.0067.161220T1000Z-161220T1700Z/
406 PM MST MON DEC 19 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM TO 10 AM
MST TUESDAY FOR BITTERROOT VALLEY AND MISSOULA...

* IMPACTS/TIMING: A WINTRY MIX OF LIGHT SNOW AND INTERMITTENT 
  FREEZING RAIN IS EXPECTED TUESDAY MORNING. ROADS, ESPECIALLY 
  SECONDARY ROADS, ARE EXPECTED TO BECOME QUITE SLICK. 

* SNOW ACCUMULATIONS: 1 TO 2 INCHES OF SNOW TUESDAY MORNING.

$$

058 
WWUS45 KMSO 200945
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
245 AM MST TUE DEC 20 2016

IDZ007-201800-
/O.EXB.KMSO.WS.W.0012.000000T0000Z-161220T1800Z/
145 AM PST TUE DEC 20 2016

...WINTER STORM WARNING IN EFFECT UNTIL 10 AM PST THIS MORNING...

* IMPACTS/TIMING: PERIODS OF LIGHT TO MODERATE SNOW ARE OCCURRING
  THIS MORNING IN ADDITION TO STRONG WINDS. BLOWING AND DRIFTING
  SNOW HAS ALREADY BEEN OBSERVED VIA WEBCAMS AT GREER GRADE, AND
  THIS IS EXPECTED TO CONTINUE THROUGH THIS MORNING. IN ADDITION,
  GRANGEVILLE WILL SEE SOUTHWESTERLY WIND GUSTS IN EXCESS OF 50
  MPH THIS MORNING.

* SNOW ACCUMULATIONS: 1 TO 3 INCHES, BUT DEEPER SNOW IN DRIFTS.

* WINDS: CAMAS PRAIRIE AND GRANGEVILLE WILL SEE WIND GUSTS OVER 50
  MPH THIS MORNING, CAUSING BLOWING AND DRIFTING SNOW. 

$$

MTZ006-210600-
/O.CON.KMSO.WS.W.0012.000000T0000Z-161221T0600Z/
245 AM MST TUE DEC 20 2016

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING FOR HIGHWAY 93 SULA TO LOST TRAIL PASS AND LOLO PASS...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER
WEATHER ADVISORY.

* IMPACTS/TIMING: PERIODS OF LIGHT TO MODERATE SNOW WILL OCCUR 
  INTO EARLY THIS EVENING. THIS FLUFFY SNOW ON TOP OF BLACK ICE 
  OR PACKED SNOW WILL CREATE SLICK CONDITIONS. SLICK DRIVING 
  CONDITIONS AND LOW VISIBILITY WILL FURTHER DETERIORATE LATE 
  TONIGHT AND TUESDAY WITH PERIODS OF HEAVY SNOW. 

* SNOW ACCUMULATIONS: GENERALLY 1 TO 3 INCHES INTO THIS EVENING. 
  AN ADDITIONAL 12 TO 15 INCHES OF SNOW IS EXPECTED LATE TONIGHT 
  AND TUESDAY. 

* WINDS: WINDS IN THE VALLEYS WILL REMAIN LIGHTER, HOWEVER, 
  SOUTHWEST WINDS BETWEEN 15 AND 25 MPH WITH GUSTS TO 40 MPH 
  WILL INCREASE TONIGHT IN THE HIGHER ELEVATIONS PRODUCING SOME 
  BLOWING SNOW ACROSS MOUNTAIN ROADS. 

$$

MTZ004-210600-
/O.CON.KMSO.WS.W.0012.000000T0000Z-161221T0600Z/
245 AM MST TUE DEC 20 2016

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* IMPACTS/TIMING: SNOW WILL INCREASE AFTER MIDNIGHT AND BECOME 
  HEAVY AT TIMES BY EARLY TUESDAY MORNING WITH PERIODS OF HEAVY 
  SNOW CONTINUING THROUGH MUCH OF TUESDAY. PATCHES OF FREEZING 
  RAIN IS POSSIBLE TUESDAY MORNING AS WELL. THE HEAVY SNOW WILL 
  REDUCE VISIBILITY AND CREATE VERY SLICK ROAD CONDITIONS. 
  BLOWING AND DRIFTING SNOW IS EXPECTED AT TIMES OVER THE HIGHER 
  TERRAIN AND LOOKOUT PASS. 

* SNOW ACCUMULATIONS: AN ADDITIONAL 12 TO 14 INCHES OF SNOW IS 
  EXPECTED BEGINNING LATE TONIGHT AND CONTINUING THROUGH TUESDAY 
  OVER THE TERRAIN AND LOOKOUT PASS. ELSEWHERE...3 TO 5 INCHES 
  OF SNOW IS EXPECTED TUESDAY FROM ALBERTON TO SUPERIOR AS WELL 
  AS EVARO HILL...AND 5 TO 9 INCHES FROM SAINT REGIS TO HAUGAN. 

* WINDS: WEST TO SOUTHWEST WINDS BETWEEN 10 AND 20 MPH WITH 
  GUSTS TO 30 MPH IS EXPECTED IN THE HIGHER ELEVATIONS INCLUDING 
  LOOKOUT PASS. 

* LOCATIONS IMPACTED INCLUDE: EVARO HILL, HIGHWAY 200 THOMPSON 
  FALLS TO PLAINS, HIGHWAY 200 TROUT CREEK TO HERON, AND I- 90 
  LOOKOUT PASS TO HAUGAN

$$

IDZ005-006-210600-
/O.CON.KMSO.WS.W.0012.000000T0000Z-161221T0600Z/
145 AM PST TUE DEC 20 2016

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...

* IMPACTS/TIMING: SLICK DRIVING CONDITIONS AND LOW VISIBILITY 
  WILL FURTHER DETERIORATE LATE TONIGHT AND TUESDAY WITH PERIODS 
  OF HEAVY SNOW. 

* SNOW ACCUMULATIONS: AN ADDITIONAL 12 TO 20 INCHES OF SNOW IS 
  EXPECTED OVER THE HIGHER TERRAIN LATE TONIGHT AND TUESDAY. IN 
  THE VALLEYS 4 TO 12 INCHES OF SNOW IS EXPECTED TUESDAY. 

* WINDS: WINDS IN THE VALLEYS WILL REMAIN LIGHTER, HOWEVER, 
  SOUTHWEST WINDS BETWEEN 15 AND 25 MPH WITH GUSTS TO 40 MPH 
  WILL INCREASE TONIGHT IN THE HIGHER ELEVATIONS PRODUCING SOME 
  BLOWING SNOW ACROSS MOUNTAIN ROADS. 

* LOCATIONS IMPACTED INCLUDE: ELK RIVER, HIGHWAY 11 PIERCE TO 
  HEADQUARTERS, PIERCE, DIXIE, ELK CITY, AND HIGHWAY 12 LOWELL 
  TO LOLO PASS

$$

IDZ008-201800-
/O.EXB.KMSO.WW.Y.0067.161220T0945Z-161220T1800Z/
145 AM PST TUE DEC 20 2016

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING
FOR HIGHWAY 95 SLATE CREEK TO RIGGINS AND WHITE BIRD GRADE...

* IMPACTS/TIMING: A WINTRY MIX OF LIGHT SNOW AND INTERMITTENT RAIN
  IS EXPECTED THIS MORNING. BLOWING AND DRIFTING SNOW...ESPECIALLY
  ON WHITEBIRD GRADE WILL MAKE DRIVING DIFFICULT AT TIMES. 

* SNOW ACCUMULATIONS: 1 TO 2 INCHES OF SNOW.

$$

MTZ007-210700-
/O.EXB.KMSO.WW.Y.0067.161220T1200Z-161221T0700Z/
245 AM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT MST TONIGHT...

* IMPACTS/TIMING: SNOW AND WINDS TODAY WILL CAUSE DIFFICULT TRAVEL
  CONDITIONS. HIGHWAY 12 WEST OF MACDONALD PASS, HIGHWAY 141, AND
  HIGHWAY 1 THROUGH PHILLIPSBURG AND GEORGETOWN WILL BE THE 
  HARDEST HIT WITH 4 TO 6 INCHES OF NEW SNOW. THERE WILL BE MUCH 
  LESS SNOW ALONG INTERSTATE 90 GARRISON JUNCTION TO BUTTE, BUT 
  WINDS WILL BE MUCH STRONGER.

* SNOW ACCUMULATIONS: 4 TO 6 INCHES, LESS ALONG INTERSTATE 90.

* WIND: THERE IS ALSO A HIGH WIND WARNING FROM GARRISON JUNCTION
  TO ANACONDA WHERE WINDS WILL GUST NEAR 60 MPH THIS MORNING.
  OTHER LOCATIONS WILL SEE WINDS 15 TO 20 MPH WITH GUSTS 20 TO 30
  MPH HOUR CAUSING REDUCED VISIBILITY AND BLOWING AND DRIFTING 
  SNOW.

$$

IDZ009-010-201900-
/O.CON.KMSO.WW.Y.0067.161220T1000Z-161220T1900Z/
245 AM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MST
TODAY...

* IMPACTS/TIMING: ANOTHER PERIOD OF LIGHT TO MODERATE SNOW AND 
  SLICK WINTRY DRIVING CONDITIONS IS EXPECTED LATE TONIGHT AND 
  TUESDAY. IN ADDITIONAL, PATCHY FREEZING RAIN IS POSSIBLE FROM 
  THE SALMON AREA TO NORTH FORK STORE. 

* SNOW ACCUMULATIONS: 2 TO 4 INCHES OF SNOW IN THE VALLEYS AND 6 
  TO 12 INCHES OVER THE HIGHER TERRAIN TUESDAY. 

* LOCATIONS IMPACTED INCLUDE: SHOUP, BANNOCK PASS, HIGHWAY 28 
  TENDOY TO LONE PINE, HIGHWAY 93 LOST TRAIL PASS TO 
  GIBBONSVILLE, LEMHI PASS, AND SALMON

$$

MTZ001-003-210100-
/O.CON.KMSO.WW.Y.0067.161220T1000Z-161221T0100Z/
245 AM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MST THIS
EVENING...

* IMPACTS/TIMING: SNOW WILL CONTINUE TO DECREASE THIS EVENING 
  AND THUS THE FIRST WINTER WEATHER ADVISORY HAS BEEN CANCELLED. 
  HOWEVER, ANOTHER PERIOD OF MODERATE SNOWFALL IS EXPECTED 
  TUESDAY. THE SNOW MAY TRANSITION TO A WINTRY MIX AT TIMES WITH 
  PATCHES OF FREEZING LIGHT RAIN POSSIBLE TUESDAY MORNING. 

* SNOW ACCUMULATIONS: AN ADDITIONAL 2 TO 4 INCHES OF SNOW IS 
  EXPECTED TUESDAY, EXCEPT UP TO 8 TO 10 INCHES OVER THE HIGHER 
  TERRAIN. 

* WINDS: SOUTHWEST WINDS BETWEEN 10 AND 20 MPH WITH GUSTS TO 30 
  MPH IN THE HIGHER ELEVATIONS PRODUCING SOME BLOWING SNOW 
  ACROSS ROADS. 

* LOCATIONS IMPACTED INCLUDE: HIGHWAY 2 KALISPELL TO LIBBY, 
  HIGHWAY 37 EUREKA TO LIBBY, HIGHWAY 56 BULL LAKE ROAD, HIGHWAY 
  93 EUREKA TO WHITEFISH, FLATHEAD LAKE, FLATHEAD VALLEY, 
  MISSION VALLEY, AND POLSON

$$

MTZ002-043-210700-
/O.CON.KMSO.WW.Y.0067.161220T1000Z-161221T0700Z/
245 AM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MST
TONIGHT...

* IMPACTS/TIMING: PERIODS OF SNOW AND BLOWING SNOW ARE POSSIBLE 
  ALONG US-2 THIS EVENING AND ESPECIALLY OVER MARIAS PASS. 
  HOWEVER SIGNIFICANT IMPACTS ARE NO LONGER ANTICIPATED THIS 
  EVENING. ANOTHER MODERATE SNOW EVENT IS EXPECTED TUESDAY 
  CREATING MORE SLICK WINTRY DRIVING CONDITIONS. LOCAL BLOWING 
  AND DRIFTING SNOW WILL OCCUR TUESDAY, BUT MAINLY OVER MARIAS 
  PASS AND HIGHER TERRAIN AND THUS A WINTER WEATHER ADVISORY 
  GOES INTO EFFECT AT 3 AM TUESDAY MORNING. 

* SNOW ACCUMULATIONS: 1 TO 2 INCHES THROUGH TONIGHT. AN 
  ADDITIONAL 4 TO 6 INCHES IS EXPECTED IN THE VALLEYS TUESDAY 
  AND 8 TO 10 INCHES OVER THE TERRAIN AND MOUNTAIN PASSES. 

* WINDS: WEST TO SOUTHWEST BETWEEN 10 AND 20 MPH WITH GUSTS TO 
  50 MPH ALONG THE US-2 CORRIDOR EAST OF WEST GLACIER TO MARIAS 
  PASS CAUSING BLOWING AND DRIFTING SNOW AND REDUCED VISIBILITY. 

* LOCATIONS IMPACTED INCLUDE: BAD ROCK CANYON, ESSEX, HIGHWAY 83 
  BIGFORK TO SWAN LAKE, MARIAS PASS, POLEBRIDGE, HIGHWAY 200 
  BONNER TO GREENOUGH, HIGHWAY 83 SEELEY LAKE TO CONDON, AND I- 
  90 EAST MISSOULA TO BEARMOUTH

$$

MTZ005-201700-
/O.CON.KMSO.WW.Y.0067.161220T1000Z-161220T1700Z/
245 AM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM MST THIS
MORNING FOR BITTERROOT VALLEY AND MISSOULA...

* IMPACTS/TIMING: A WINTRY MIX OF LIGHT SNOW AND INTERMITTENT 
  FREEZING RAIN IS EXPECTED TUESDAY MORNING. ROADS, ESPECIALLY 
  SECONDARY ROADS, ARE EXPECTED TO BECOME QUITE SLICK. 

* SNOW ACCUMULATIONS: 1 TO 2 INCHES OF SNOW TUESDAY MORNING.

$$

601 
WWUS45 KMSO 201711
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1011 AM MST TUE DEC 20 2016

IDZ007-201815-
/O.CAN.KMSO.WS.W.0012.000000T0000Z-161220T1800Z/
911 AM PST TUE DEC 20 2016

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER
STORM WARNING. 

GUSTY SOUTHWEST TO WEST WINDS WILL CONTINUE ACROSS THE CAMAS
PRAIRIE AND SURROUNDING AREAS THROUGH THIS AFTERNOON. HOWEVER,
WARM TEMPERATURES AND SLOWLY DECREASING WINDS HAVE ENDED THE 
WINTER STORM CANDIDNESS OBSERVED EARLIER.

$$

MTZ005-201815-
/O.EXP.KMSO.WW.Y.0067.000000T0000Z-161220T1700Z/
1011 AM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY WILL EXPIRE AT 10 AM MST THIS MORNING
FOR BITTERROOT VALLEY AND MISSOULA...

* IMPACTS/TIMING: LIGHT SNOW AND A RAIN OR SNOW MIX WILL CONTINUE
TODAY ON THE MISSOULA AND BITTERROOT VALLEYS. BACK ROADS WILL 
REMAIN SLUSHY BUT WIDESPREAD SNOW IMPACTS TO TRAVEL HAVE 
DECREASED.

* SNOW ACCUMULATIONS: TRACE TO ONE HALF INCH.

$$

MTZ006-210600-
/O.CON.KMSO.WS.W.0012.000000T0000Z-161221T0600Z/
1011 AM MST TUE DEC 20 2016

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING FOR HIGHWAY 93 SULA TO LOST TRAIL PASS AND LOLO PASS...

* IMPACTS/TIMING: PERIODS OF LIGHT TO MODERATE SNOW WILL OCCUR
  INTO EARLY THIS EVENING.

* SNOW ACCUMULATIONS: AN ADDITIONAL 3 TO 6 INCHES IS EXPECTED THIS
  AFTERNOON.

* WINDS: SOUTHWEST TO WEST WINDS BETWEEN 15 AND 25 MPH WITH GUSTS
  TO 40 MPH WILL CONTINUE TODAY. 

$$

MTZ004-210600-
/O.CON.KMSO.WS.W.0012.000000T0000Z-161221T0600Z/
1011 AM MST TUE DEC 20 2016

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* IMPACTS/TIMING: BLOWING AND DRIFTING SNOW IS EXPECTED AT TIMES OVER
  THE HIGHER TERRAIN AND LOOKOUT PASS THROUGH THIS AFTERNOON. 

* SNOW ACCUMULATIONS: AN ADDITIONAL 4 TO 8 INCHES OF SNOW IS
  EXPECTED TODAY AND THIS EVENING. 

* WINDS: WEST WINDS BETWEEN 10 AND 20 MPH WITH GUSTS TO 30 MPH IS
  EXPECTED IN THE HIGHER ELEVATIONS INCLUDING LOOKOUT PASS. 

* LOCATIONS IMPACTED INCLUDE: EVARO HILL, HIGHWAY 200 THOMPSON
  FALLS TO PLAINS, HIGHWAY 200 TROUT CREEK TO HERON, AND I-90 
  LOOKOUT PASS TO HAUGAN

$$

IDZ005-006-210600-
/O.CON.KMSO.WS.W.0012.000000T0000Z-161221T0600Z/
911 AM PST TUE DEC 20 2016

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...

* IMPACTS/TIMING: SLICK DRIVING CONDITIONS AND LOW VISIBILITY WILL
  CONTINUE THROUGH THIS EVENING. 

* SNOW ACCUMULATIONS: AN ADDITIONAL 4 TO 8 INCHES OF SNOW IS
  EXPECTED OVER THE HIGHER TERRAIN TODAY.

* WINDS: WINDS BETWEEN 15 AND 25 MPH WITH GUSTS TO 40 MPH WILL INCREASE
  TONIGHT IN THE HIGHER ELEVATIONS PRODUCING SOME BLOWING SNOW 
  ACROSS MOUNTAIN ROADS. 

* LOCATIONS IMPACTED INCLUDE: ELK RIVER, HIGHWAY 11 PIERCE TO 
  HEADQUARTERS, PIERCE, DIXIE, ELK CITY, AND HIGHWAY 12 LOWELL 
  TO LOLO PASS

$$

IDZ009-010-210100-
/O.EXT.KMSO.WW.Y.0067.000000T0000Z-161221T0100Z/
1011 AM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 PM MST THIS
EVENING...

* IMPACTS/TIMING: LIGHT TO MODERATE SNOW AND SLICK WINTRY DRIVING
  CONDITIONS IS EXPECTED THROUGH THE AFTERNOON. 

* SNOW ACCUMULATIONS: 2 TO 4 INCHES OF SNOW IN THE VALLEYS AND 6 
  TO 12 INCHES OVER THE HIGHER TERRAIN TUESDAY. 

* LOCATIONS IMPACTED INCLUDE: SHOUP, BANNOCK PASS, HIGHWAY 28 
  TENDOY TO LONE PINE, HIGHWAY 93 LOST TRAIL PASS TO 
  GIBBONSVILLE, LEMHI PASS, AND SALMON

$$

IDZ008-210100-
/O.EXT.KMSO.WW.Y.0067.000000T0000Z-161221T0100Z/
911 AM PST TUE DEC 20 2016

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 PM PST THIS
AFTERNOON FOR HIGHWAY 95 SLATE CREEK TO RIGGINS AND WHITE BIRD
GRADE...

* IMPACTS/TIMING: BLOWING AND DRIFTING SNOW OVER THE WHITEBIRD 
  GRADE SUMMIT WILL MAKE DRIVING DIFFICULT AT TIMES.

* SNOW ACCUMULATIONS: 1 TO 2 INCHES OF SNOW.

$$

MTZ001-003-210100-
/O.CON.KMSO.WW.Y.0067.000000T0000Z-161221T0100Z/
1011 AM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MST THIS
EVENING...

* IMPACTS/TIMING: PERIODS OF SNOW WILL CONTINUE THIS AFTERNOON. 

* SNOW ACCUMULATIONS: AN ADDITIONAL 2 TO 4 INCHES OF SNOW IS
  EXPECTED TODAY, EXCEPT UP TO 8 TO 10 INCHES OVER THE HIGHER 
  TERRAIN. 

* WINDS: WEST WINDS BETWEEN 10 AND 20 MPH WITH GUSTS TO 30 MPH IN
  THE HIGHER ELEVATIONS PRODUCING SOME BLOWING SNOW ACROSS ROADS.

* LOCATIONS IMPACTED INCLUDE: HIGHWAY 2 KALISPELL TO LIBBY, 
  HIGHWAY 37 EUREKA TO LIBBY, HIGHWAY 56 BULL LAKE ROAD, HIGHWAY 
  93 EUREKA TO WHITEFISH, FLATHEAD LAKE, FLATHEAD VALLEY, 
  MISSION VALLEY, AND POLSON

$$

MTZ002-043-210700-
/O.CON.KMSO.WW.Y.0067.000000T0000Z-161221T0700Z/
1011 AM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MST
TONIGHT...

* IMPACTS/TIMING: PERIODS OF SNOW AND BLOWING SNOW WILL CONTINUE
  THROUGH THIS EVENING ALONG US-2 ESPECIALLY OVER MARIAS PASS. 

* SNOW ACCUMULATIONS: 1 TO 4 INCHES THROUGH THIS EVENING. 

* WINDS: WEST TO SOUTHWEST BETWEEN 10 AND 20 MPH WITH GUSTS TO 
  50 MPH ALONG THE US-2 CORRIDOR EAST OF WEST GLACIER TO MARIAS 
  PASS CAUSING BLOWING AND DRIFTING SNOW AND REDUCED VISIBILITY. 

* LOCATIONS IMPACTED INCLUDE: BAD ROCK CANYON, ESSEX, HIGHWAY 83 
  BIGFORK TO SWAN LAKE, MARIAS PASS, POLEBRIDGE, HIGHWAY 200 
  BONNER TO GREENOUGH, HIGHWAY 83 SEELEY LAKE TO CONDON, AND I- 
  90 EAST MISSOULA TO BEARMOUTH

$$

MTZ007-210700-
/O.CON.KMSO.WW.Y.0067.000000T0000Z-161221T0700Z/
1011 AM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MST
TONIGHT...

* IMPACTS/TIMING: SNOW AND WINDS TODAY WILL CAUSE DIFFICULT TRAVEL
  CONDITIONS.  

* SNOW ACCUMULATIONS: 4 TO 6 INCHES FOR HIGHER TERRAIN, LESS 
  ALONG INTERSTATE 90.

* WIND: THERE IS ALSO A HIGH WIND WARNING FROM GARRISON JUNCTION
  TO ANACONDA WHERE WINDS WILL GUST NEAR 60 MPH THROUGH THE
  AFTERNOON. OTHER LOCATIONS WILL SEE WINDS 15 TO 20 MPH WITH GUSTS
  20 TO 30 MPH HOUR CAUSING REDUCED VISIBILITY AND BLOWING AND 
  DRIFTING SNOW. 

$$

831 
WWUS45 KMSO 202041
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
141 PM MST TUE DEC 20 2016

IDZ008-MTZ001-003-202145-
/O.CAN.KMSO.WW.Y.0067.000000T0000Z-161221T0100Z/
141 PM MST TUE DEC 20 2016 /1241 PM PST TUE DEC 20 2016/

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER
WEATHER ADVISORY. 

WINDY CONDITIONS WILL CONTINUE INTO THE EVENING AS A COLD FRONT 
MOVES THROUGH THE AREA. HOWEVER, PRECIPITATION HAS DECREASED TO 
SCATTERED SHOWERS.

$$

MTZ006-210600-
/O.CON.KMSO.WS.W.0012.000000T0000Z-161221T0600Z/
141 PM MST TUE DEC 20 2016

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING FOR HIGHWAY 93 SULA TO LOST TRAIL PASS AND LOLO PASS...

* IMPACTS/TIMING: PERIODS OF LIGHT TO MODERATE SNOW WILL OCCUR
  INTO EARLY THIS EVENING. WHITEOUT CONDITIONS MAY OCCUR IN
  STRONGER WIND GUSTS.

* SNOW ACCUMULATIONS: AN ADDITIONAL 3 TO 6 INCHES IS EXPECTED 
  THIS AFTERNOON. 

* WINDS: WEST WINDS BETWEEN 15 AND 25 MPH WITH GUSTS TO 40 MPH WILL
  CONTINUE TODAY. 

$$

MTZ004-210600-
/O.CON.KMSO.WS.W.0012.000000T0000Z-161221T0600Z/
141 PM MST TUE DEC 20 2016

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* IMPACTS/TIMING: BLOWING AND DRIFTING SNOW IS EXPECTED AT TIMES
  OVER THE HIGHER TERRAIN AND LOOKOUT PASS THROUGH THIS AFTERNOON.
  WHITEOUT CONDITIONS MAY OCCUR IN  STRONGER WIND GUSTS.

* SNOW ACCUMULATIONS: AN ADDITIONAL 3 TO 6 INCHES OF SNOW IS EXPECTED
  TODAY AND THIS EVENING. 

* WINDS: WEST WINDS BETWEEN 10 AND 20 MPH WITH GUSTS TO 30 MPH ARE EXPECTED
  IN THE HIGHER ELEVATIONS INCLUDING LOOKOUT PASS. 

* LOCATIONS IMPACTED INCLUDE: EVARO HILL, HIGHWAY 200 THOMPSON 
  FALLS TO PLAINS, HIGHWAY 200 TROUT CREEK TO HERON, AND I- 90 
  LOOKOUT PASS TO HAUGAN

$$

IDZ005-006-210600-
/O.CON.KMSO.WS.W.0012.000000T0000Z-161221T0600Z/
1241 PM PST TUE DEC 20 2016

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...

* IMPACTS/TIMING: SLICK DRIVING CONDITIONS AND LOW VISIBILITY 
  WILL CONTINUE THROUGH THIS EVENING. 

* SNOW ACCUMULATIONS: AN ADDITIONAL 4 TO 8 INCHES OF SNOW IS 
  EXPECTED OVER THE HIGHER TERRAIN TODAY. 

* WINDS: WINDS BETWEEN 15 AND 25 MPH WITH GUSTS TO 40 MPH WILL 
  INCREASE TONIGHT IN THE HIGHER ELEVATIONS PRODUCING SOME 
  BLOWING SNOW ACROSS MOUNTAIN ROADS. 

* LOCATIONS IMPACTED INCLUDE: ELK RIVER, HIGHWAY 11 PIERCE TO 
  HEADQUARTERS, PIERCE, DIXIE, ELK CITY, AND HIGHWAY 12 LOWELL 
  TO LOLO PASS

$$

IDZ009-010-210100-
/O.CON.KMSO.WW.Y.0067.000000T0000Z-161221T0100Z/
141 PM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MST THIS
EVENING...

* IMPACTS/TIMING: LIGHT TO MODERATE SNOW AND SLICK WINTRY 
  DRIVING CONDITIONS IS EXPECTED THROUGH THE AFTERNOON. 

* SNOW ACCUMULATIONS: AN ADDITIONAL 2 TO 4 INCHES OF SNOW IN THE
  VALLEYS AND 3 TO 7 INCHES OVER THE HIGHER TERRAIN TUESDAY. 

* LOCATIONS IMPACTED INCLUDE: SHOUP, BANNOCK PASS, HIGHWAY 28 
  TENDOY TO LONE PINE, HIGHWAY 93 LOST TRAIL PASS TO 
  GIBBONSVILLE, LEMHI PASS, AND SALMON

$$

MTZ002-043-210700-
/O.CON.KMSO.WW.Y.0067.000000T0000Z-161221T0700Z/
141 PM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MST
TONIGHT...

* IMPACTS/TIMING: PERIODS OF SNOW AND BLOWING SNOW WILL CONTINUE 
  THROUGH THIS EVENING ALONG US-2 ESPECIALLY OVER MARIAS PASS. 

* SNOW ACCUMULATIONS: 1 TO 4 INCHES THROUGH THIS EVENING.

* WINDS: WEST TO SOUTHWEST BETWEEN 10 AND 20 MPH WITH GUSTS TO 
  50 MPH ALONG THE US-2 CORRIDOR EAST OF WEST GLACIER TO MARIAS 
  PASS CAUSING BLOWING AND DRIFTING SNOW AND REDUCED VISIBILITY. 

* LOCATIONS IMPACTED INCLUDE: BAD ROCK CANYON, ESSEX, HIGHWAY 83 
  BIGFORK TO SWAN LAKE, MARIAS PASS, POLEBRIDGE, HIGHWAY 200 
  BONNER TO GREENOUGH, HIGHWAY 83 SEELEY LAKE TO CONDON, AND I- 
  90 EAST MISSOULA TO BEARMOUTH

$$

MTZ007-210700-
/O.CON.KMSO.WW.Y.0067.000000T0000Z-161221T0700Z/
141 PM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MST
TONIGHT...

* IMPACTS/TIMING: SNOW AND WINDS TODAY WILL CAUSE DIFFICULT 
  TRAVEL CONDITIONS. 

* SNOW ACCUMULATIONS: 4 TO 6 INCHES FOR HIGHER TERRAIN, LESS 
  ALONG INTERSTATE 90. 

* WIND: THERE IS ALSO A HIGH WIND WARNING FROM GARRISON JUNCTION 
  TO ANACONDA WHERE WINDS WILL GUST NEAR 60 MPH THROUGH THE 
  AFTERNOON. OTHER LOCATIONS WILL SEE WINDS 15 TO 20 MPH WITH 
  GUSTS 20 TO 30 MPH HOUR CAUSING REDUCED VISIBILITY AND BLOWING 
  AND DRIFTING SNOW. 

$$

541 
WWUS45 KMSO 210044
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
544 PM MST TUE DEC 20 2016

IDZ005-006-MTZ004-006-210145-
/O.CAN.KMSO.WS.W.0012.000000T0000Z-161221T0600Z/
544 PM MST TUE DEC 20 2016 /444 PM PST TUE DEC 20 2016/

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER
STORM WARNING. 

$$

IDZ009-010-210145-
/O.EXP.KMSO.WW.Y.0067.000000T0000Z-161221T0100Z/
544 PM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 PM MST THIS EVENING...

* ISOLATED AREAS OF SLICK SNOW-COVERED ROADS MAY STILL BE
  PRESENT...ESPECIALLY OVER LOST TRAIL PASS.

* LOCATIONS IMPACTED INCLUDE: SHOUP, BANNOCK PASS, HIGHWAY 28 
  TENDOY TO LONE PINE, HIGHWAY 93 LOST TRAIL PASS TO 
  GIBBONSVILLE, LEMHI PASS, AND SALMON

$$

MTZ002-043-210700-
/O.CON.KMSO.WW.Y.0067.000000T0000Z-161221T0700Z/
544 PM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MST
TONIGHT...

* IMPACTS/TIMING: PERIODS OF SNOW AND BLOWING SNOW WILL CONTINUE
  THROUGH THIS EVENING ALONG US-2 ESPECIALLY OVER MARIAS PASS.

* SNOW ACCUMULATIONS: 1 TO 2 INCHES THROUGH THIS EVENING WITH
  LOCALLY HIGHER AMOUNTS.

* WINDS: WEST TO SOUTHWEST BETWEEN 10 AND 20 MPH WITH GUSTS TO 50
  MPH ALONG THE US-2 CORRIDOR EAST OF WEST GLACIER TO MARIAS PASS
  CAUSING BLOWING AND DRIFTING SNOW AND REDUCED VISIBILITY. 

* LOCATIONS IMPACTED INCLUDE: BAD ROCK CANYON, ESSEX, HIGHWAY 83 
  BIGFORK TO SWAN LAKE, MARIAS PASS, POLEBRIDGE, HIGHWAY 200 
  BONNER TO GREENOUGH, HIGHWAY 83 SEELEY LAKE TO CONDON, AND I- 
  90 EAST MISSOULA TO BEARMOUTH

$$

MTZ007-210700-
/O.CON.KMSO.WW.Y.0067.000000T0000Z-161221T0700Z/
544 PM MST TUE DEC 20 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MST
TONIGHT...

* IMPACTS/TIMING: PERIODS OF SNOW AND BLOWING SNOW WILL CONTINUE
  THROUGH THIS EVENING ESPECIALLY ALONG HIGHWAY 12 FROM AVON TO
  MACDONALD PASS.

* SNOW ACCUMULATIONS: 1 TO 2 ADDITIONAL INCHES FOR HIGHER 
  TERRAIN, LESS ALONG INTERSTATE 90. 

* WIND: THERE IS ALSO A HIGH WIND WARNING FROM GARRISON JUNCTION 
  TO ANACONDA WHERE WINDS WILL GUST NEAR 60 MPH THROUGH THE 
  AFTERNOON. OTHER LOCATIONS WILL SEE WINDS 15 TO 20 MPH WITH 
  GUSTS 20 TO 30 MPH HOUR CAUSING REDUCED VISIBILITY AND BLOWING 
  AND DRIFTING SNOW. 

$$

Area Forecast Discussion
National Weather Service Missoula MT
403 AM MST Mon Dec 19 2016

.DISCUSSION...Today will bring wind and snow for many locations.
Idaho county will be hardest hit from Elk River through Pierce and
Powell with 3 to 7 inches of new snow today. Wind will also be a
concern for those at higher elevations in the back country, but
should be as much of an impact along the mostly sheltered Hwy 12.
A winter weather advisory has been issued for this event.

Further west on the Camas Prairie down to Grangeville and Riggins
it will be very windy, and winds have already started gusting this
morning over 35 mph at some locations. Later today and this
evening gusts near 50 mph are possible at times. Down sloping with
the strong winds is expected to prevent significant snow in these
areas today.

In northwest Montana, snow has already started falling with 2 to 5
inches of new snow expected in Lincoln county and 3 to 7 inches
from West Glacier to Marias Pass. Much less snow is expected in
the Flathead and Mission valleys, but these areas are exposed to
enough wind that some difficulties are expected due to blowing and
drifting snow today. Advisories have also been issued in these
areas.

Elsewhere in western Montana, wind will be an issue. Winds are
already gusting this morning near 40 mph from Garrison Junction
through Deer Lodge and Anaconda. Blowing and drifting snow has
been a concern for this area, but so far none has been observed,
so we opted for a wind advisory for today in this area where
little to no new snow is expected.

Just as the advisories for today's weather are winding down
tonight, a winter weather watch goes into effect. A strong, warmer
system with a lot of wind and moisture impacts the region. The
Clearwater and Bitterroot Mountains of central Idaho and western
Montana will get pummeled with between 1 and 2 feet of new, wet
snow. This will be accompanied by a lot of wind, which will have
huge impacts for avalanche risks. In the valleys, the cold air
currently in place will get scoured out with temperatures rising
to around freezing for the first time in several days. The strong
winds will downslope, causing the valleys to get much less
moisture. Still, the southern and western portions of the
Bitterroot Valley could see 4 to 10 inches of new snow, while the
northern Bitterroot and Missoula valleys may only see a couple
inches of new snow and a lot of wind. The Mission and Swan
Mountains will also see a lot of new snow, with around 4 inches
in the lower elevations of Northwest Montana. Lookout and Lolo
Passes will both be hit with over a foot of snow. Travel over
mountain passes, especially over Lolo Pass into central Idaho will
very likely be dangerous Tuesday. As a result several watches
have been issued for this period. The area from Garrison Junction
through Anaconda and Butte during the Tuesday system is expected
to be windy again, with less than an inch of snow in the
forecast.

Wednesday through Thursday morning currently looks like a mostly
dry period in the wake of Tuesday's snowy system. Some showers
will remain in the terrain of northwest Montana, but these are
not expected to be impactful. Thursday evening through Friday
brings increasing moisture in westerly flow. Valleys may be
somewhat sheltered, but will still likely see light accumulating
snow.

Friday into Saturday and Sunday, models have come into slightly
better agreement regarding the next impactful weather system.
Current trends focus most of the energy to the south.
Nevertheless, west central Montana, southwest Montana, and Lemhi
county currently look to be the areas most likely to see
significant snow. That being said, model uncertainty is still
high, so stay tuned if planning to travel on or around Christmas.

&&

.AVIATION...Snow showers will likely affect visibility at KGPI and
KMSO this afternoon as a quick-moving system moves through. By
19/2000z, many sites could begin seeing gusty winds ahead of the
large trough of low pressure that comes in Tuesday. Snow totals
for today are forecast to be light, roughly 1 to 2 inches for
most valleys, with winds potentially adding a blowing component
to the wintry weather. Expect widespread mountain obscurations
with lowered ceilings and snow showers in the terrain.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...Winter Weather Advisory until 8 PM MST this evening
     Bitterroot/Sapphire Mountains.

     Winter Storm Watch from this evening through Tuesday afternoon
     Bitterroot/Sapphire Mountains...Lower Clark Fork Region.

     Winter Weather Advisory until 8 PM MST this evening
     Flathead/Mission Valleys...Kootenai/Cabinet Region.

     Winter Weather Advisory until 8 PM MST this evening West Glacier
     Region.

     Winter Weather Advisory until 8 PM MST this evening
     Potomac/Seeley Lake Region.

     Wind Advisory until 5 PM MST this afternoon Butte/Blackfoot
     Region.

     Winter Weather Advisory until 8 PM MST this evening Lower Clark
     Fork Region.

ID...Winter Weather Advisory until 7 PM PST this evening Northern
     Clearwater Mountains...Southern Clearwater Mountains.

     Winter Storm Watch from this evening through Tuesday afternoon
     Lower Hells Canyon/Salmon River Region...Northern
     Clearwater Mountains...Orofino/Grangeville Region...
     Southern Clearwater Mountains.

&&

Special Weather Statement
National Weather Service Missoula MT
1059 AM PST MON DEC 19 2016

IDZ006>008-192030-
Southern Clearwater Mountains ID-
Lower Hells Canyon/Salmon River Region ID-
Orofino/Grangeville Region ID-
1059 AM PST MON DEC 19 2016

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL IDAHO COUNTY UNTIL
1230 PM PST...

At 1056 AM PST, trained weather spotters reported sustained winds of
30 to 32 mph with blowing snow. Patchy blowing and drifting snow
will continue through the early afternoon before diminishing. Use
caution and expect rapidly changing conditions on area roads through
early afternoon.

Locations impacted include...
Grangeville, Cottonwood, Ferdinand and Fenn.

LAT...LON 4597 11601 4584 11624 4606 11639 4618 11641
      4613 11617 4604 11614
TIME...MOT...LOC 1856Z 180DEG 0KT 4594 11614

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
1211 PM MST MON DEC 19 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1210 PM     SNOW             1 S COLUMBIA FALLS      48.36N 114.18W
12/19/2016  M4.0 INCH        FLATHEAD           MT   TRAINED SPOTTER

            4 INCHES OF NEW SNOW THIS MORNING AND STILL
            SNOWING.

&&

NWS MISSOULA MT
IRIS SYSTEM