Winter Storm Warning 19, NWS Missoula, MT

000 
WWUS45 KMSO 250303
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
803 PM MST SUN DEC 24 2006

.A WINTER WEATHER SYSTEM WILL MOVE ACROSS NORTH CENTRAL IDAHO AND
WESTERN MONTANA LATE TONIGHT THROUGH MONDAY NIGHT. MODERATE TO
HEAVY SNOWFALL RATES ARE EXPECTED AS WELL AS STRONG WESTERLY WINDS
IN THE MOUNTAINS. SNOW LEVELS WILL RISE TO NEAR 6000 FEET MONDAY
AFTERNOON OVER THE SOUTHERN MOUNTAINS THEN LOWER TO 4500 FEET BY EARLY
TUESDAY. LOWER WESTERN MONTANA VALLEYS MAY SEE SNOW MIXED WITH
RAIN CHRISTMAS MORNING BEFORE CHANGING TO ALL RAIN BY MID
DAY...ESPECIALLY FROM THE MISSION VALLEY SOUTHWARD.

IDZ009-251300-
/O.CAN.KMSO.WS.W.0019.061225T1200Z-061226T1200Z/
/O.EXB.KMSO.SB.Y.0014.061225T1800Z-061226T1200Z/
WESTERN LEMHI COUNTY-
803 PM MST SUN DEC 24 2006

...WINTER STORM WARNING IS CANCELLED...
...SNOW AND BLOWING SNOW ADVISORY IN EFFECT FROM 11 AM MONDAY TO
5 AM MST TUESDAY ABOVE 5000 FEET...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SNOW AND
BLOWING SNOW ADVISORY ABOVE 5000 FEET...WHICH IS IN EFFECT FROM
11 AM MONDAY TO 5 AM MST TUESDAY. THE WINTER STORM WARNING HAS
BEEN CANCELED. 

3 TO 7 INCHES OF SNOW IN THE MOUNTAINS AND 1 TO 4 INCHES IN THE
VALLEYS IS EXPECTED BY MONDAY NIGHT. WEST WINDS 15 TO 30 MPH WILL
CREATE AREAS OF BLOWING SNOW AT TIMES OVER HIGHER TERRAIN.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

IDZ005-006-MTZ006-251300-
/O.CON.KMSO.WS.W.0019.061225T1200Z-061226T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
BITTERROOT/SAPPHIRE MOUNTAINS-
803 PM MST SUN DEC 24 2006 /703 PM PST SUN DEC 24 2006/

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM MST /4 AM
PST/ MONDAY TO 5 AM MST /4 AM PST/ TUESDAY ABOVE 5000 FEET...

A WINTER STORM WARNING ABOVE 5000 FEET REMAINS IN EFFECT FROM
5 AM MST /4 AM PST/ MONDAY TO 5 AM MST /4 AM PST/ TUESDAY. 

6 TO 12 INCHES OF SNOW WITH LOCAL AMOUNTS UP TO 16 INCHES IN THE
HIGHER TERRAIN IS EXPECTED BY TUESDAY MORNING ABOVE 5000 FEET. LOLO
PASS...WILL BE AMONG THE AREAS IMPACTED BY THIS EVENT. WEST WINDS
20 TO 30 MPH WILL CAUSE AREAS OF BLOWING SNOW AND REDUCED
VISIBILITIES AT TIMES THROUGH MONDAY AFTERNOON BEFORE TAPERING OFF
MONDAY EVENING.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... ARE
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

IDZ010-251300-
/O.EXT.KMSO.SB.Y.0014.061225T1800Z-061226T1200Z/
EASTERN LEMHI COUNTY-
803 PM MST SUN DEC 24 2006

...SNOW AND BLOWING SNOW ADVISORY NOW IN EFFECT FROM 11 AM MONDAY
TO 5 AM MST TUESDAY ABOVE 5000 FEET...

THE SNOW AND BLOWING SNOW ADVISORY IS NOW IN EFFECT FROM 11 AM
MONDAY TO 5 AM MST TUESDAY ABOVE 5000 FEET.

3 TO 7 INCHES OF SNOW IS EXPECTED BY TUESDAY MORNING MAINLY IN
THE MOUNTAINS OF LEMHI COUNTY. WEST WINDS 20 TO 30 MPH OVER HIGHER
TERRAIN WILL CREATE AREAS OF BLOWING SNOW AT TIMES THROUGH MONDAY
AFTERNOON BEFORE TAPERING OFF MONDAY EVENING.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

MTZ001-002-251300-
/O.CON.KMSO.SB.Y.0014.061225T1200Z-061226T0600Z/
KOOTENAI/CABINET REGION-WEST GLACIER REGION-
803 PM MST SUN DEC 24 2006

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 5 AM TO
11 PM MST MONDAY ABOVE 3500 FEET...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 5 AM TO
11 PM MST MONDAY ABOVE 3500 FEET.

4 TO 7 INCHES OF SNOW IS EXPECTED BY MONDAY NIGHT ABOVE
3500 FEET WITH LOCAL AMOUNTS UP TO 9 INCHES AT HIGHER ELEVATIONS
IN GLACIER NATIONAL PARK. HIGHWAY 2 BETWEEN MARION AND HAPPYS
INN...AS WELL AS MARIAS PASS...WILL BE AMONG THE AREAS IMPACTED BY
THIS EVENT. WEST WINDS 20 TO 30 MPH OVER HIGHER TERRAIN WILL
CREATE AREAS OF BLOWING SNOW AT TIMES.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

MTZ004-043-251300-
/O.CON.KMSO.SB.Y.0014.061225T1200Z-061226T0600Z/
LOWER CLARK FORK REGION-POTOMAC/SEELEY LAKE REGION-
803 PM MST SUN DEC 24 2006

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 5 AM TO
11 PM MST MONDAY FOR AREAS ABOVE 4000 FEET...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 5 AM TO
11 PM MST MONDAY ABOVE 4000 FEET.

3 TO 7 INCHES OF SNOW IS EXPECTED BY MONDAY NIGHT ABOVE
4000 FEET. LOOKOUT PASS...WILL BE AMONG THE AREAS IMPACTED BY
THIS EVENT. WEST WINDS 20 TO 30 MPH WILL CREATE AREAS OF BLOWING
SNOW AT TIMES AT THE HIGHER ELEVATIONS CHRISTMAS DAY BEFORE
TAPERING OFF LATE IN THE DAY.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

000 
WWUS45 KMSO 251115
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
415 AM MST MON DEC 25 2006

.A WINTER WEATHER SYSTEM WILL MOVE ACROSS NORTH CENTRAL IDAHO AND
WESTERN MONTANA TODAY THROUGH TONIGHT. MODERATE TO HEAVY SNOWFALL RATES
ARE EXPECTED AS WELL AS STRONG WESTERLY WINDS IN THE MOUNTAINS.
SNOW LEVELS WILL RISE TO NEAR 6000 FEET THIS AFTERNOON OVER THE
SOUTHERN MOUNTAINS THEN LOWER TO 4500 FEET BY EARLY TUESDAY. LOWER
WESTERN MONTANA VALLEYS MAY SEE SNOW MIXED WITH RAIN THIS MORNING
BEFORE CHANGING TO ALL RAIN BY MID DAY...ESPECIALLY FROM THE
MISSION VALLEY SOUTHWARD.

IDZ005-006-MTZ006-251800-
/O.CON.KMSO.WS.W.0019.061225T1200Z-061226T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
BITTERROOT/SAPPHIRE MOUNTAINS-
415 AM MST MON DEC 25 2006 /315 AM PST MON DEC 25 2006/

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST /4 AM
PST/ TUESDAY ABOVE 5000 FEET...

6 TO 12 INCHES OF SNOW WITH LOCAL AMOUNTS UP TO 16 INCHES IN THE
HIGHER TERRAIN IS EXPECTED BY TUESDAY MORNING ABOVE 5000 FEET.
LOLO PASS...WILL BE AMONG THE AREAS IMPACTED BY THIS EVENT. WEST
WINDS 20 TO 30 MPH WILL CAUSE AREAS OF BLOWING SNOW AND REDUCED
VISIBILITIES AT TIMES THROUGH THIS AFTERNOON BEFORE TAPERING OFF
THIS EVENING.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... ARE
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

MTZ001-002-251800-
/O.CON.KMSO.SB.Y.0014.061225T1200Z-061226T0600Z/
KOOTENAI/CABINET REGION-WEST GLACIER REGION-
415 AM MST MON DEC 25 2006

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM
MST THIS EVENING ABOVE 3500 FEET...

3 TO 7 INCHES OF SNOW IS EXPECTED BY MONDAY NIGHT ABOVE 3500 FEET
WITH LOCAL AMOUNTS UP TO 9 INCHES AT HIGHER ELEVATIONS IN GLACIER
NATIONAL PARK. 1 TO 3 INCHES OF SNOW IS POSSIBLE BELOW 3500 FEET.
HIGHWAY 2 BETWEEN MARION AND HAPPYS INN...AS WELL AS MARIAS
PASS...WILL BE AMONG THE AREAS IMPACTED BY THIS EVENT. WEST WINDS
20 TO 30 MPH OVER HIGHER TERRAIN WILL CREATE AREAS OF BLOWING SNOW
AT TIMES.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

MTZ004-043-251800-
/O.CON.KMSO.SB.Y.0014.061225T1200Z-061226T0600Z/
LOWER CLARK FORK REGION-POTOMAC/SEELEY LAKE REGION-
415 AM MST MON DEC 25 2006

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM
MST THIS EVENING ABOVE 4000 FEET...

3 TO 7 INCHES OF SNOW IS EXPECTED BY LATE THIS EVENING ABOVE 4000
FEET. 1 TO 3 INCHES OF SNOW IS POSSIBLE BELOW 4000 FEET. LOOKOUT
PASS...WILL BE AMONG THE AREAS IMPACTED BY THIS EVENT. WEST WINDS
20 TO 30 MPH WILL CREATE AREAS OF BLOWING SNOW AT TIMES AT THE
HIGHER ELEVATIONS TODAY BEFORE TAPERING OFF LATE IN THE DAY.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

IDZ010-251800-
/O.CON.KMSO.SB.Y.0014.061225T1800Z-061226T1200Z/
EASTERN LEMHI COUNTY-
415 AM MST MON DEC 25 2006

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 11 AM
THIS MORNING TO 5 AM MST TUESDAY ABOVE 5000 FEET...

3 TO 7 INCHES OF SNOW IS EXPECTED BY TUESDAY MORNING MAINLY IN
THE MOUNTAINS OF LEMHI COUNTY. WEST WINDS 20 TO 30 MPH OVER HIGHER
TERRAIN WILL CREATE AREAS OF BLOWING SNOW AT TIMES THROUGH TONIGHT.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

IDZ009-251800-
/O.CON.KMSO.SB.Y.0014.061225T1800Z-061226T1200Z/
WESTERN LEMHI COUNTY-
415 AM MST MON DEC 25 2006

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 11 AM
THIS MORNING TO 5 AM MST TUESDAY ABOVE 5000 FEET...

3 TO 7 INCHES OF SNOW IN THE MOUNTAINS AND 1 TO 4 INCHES IN THE
VALLEYS IS EXPECTED BY TONIGHT. WEST WINDS 15 TO 30 MPH WILL
CREATE AREAS OF BLOWING SNOW AT TIMES OVER HIGHER TERRAIN.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

000 
WWUS45 KMSO 251513
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
813 AM MST MON DEC 25 2006

.A WINTER WEATHER SYSTEM WILL MOVE ACROSS NORTH CENTRAL IDAHO AND
WESTERN MONTANA TODAY THROUGH TONIGHT. MODERATE TO HEAVY SNOWFALL
RATES ARE EXPECTED AS WELL AS STRONG WESTERLY WINDS IN THE
MOUNTAINS. SNOW LEVELS WILL RISE TO NEAR 6000 FEET THIS AFTERNOON
OVER THE SOUTHERN MOUNTAINS THEN LOWER TO 4500 FEET BY EARLY
TUESDAY. LOWER WESTERN MONTANA VALLEYS MAY SEE SNOW MIXED WITH
RAIN THIS MORNING BEFORE CHANGING TO ALL RAIN BY MID DAY...
ESPECIALLY FROM THE MISSION VALLEY SOUTHWARD.

IDZ005-006-MTZ006-251900-
/O.CON.KMSO.WS.W.0019.000000T0000Z-061226T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
BITTERROOT/SAPPHIRE MOUNTAINS-
813 AM MST MON DEC 25 2006 /713 AM PST MON DEC 25 2006/

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST /4 AM
PST/ TUESDAY ABOVE 5000 FEET...

6 TO 12 INCHES OF SNOW WITH LOCAL AMOUNTS UP TO 16 INCHES IN THE
HIGHER TERRAIN IS EXPECTED BY TUESDAY MORNING ABOVE 5000 FEET.
LOLO PASS...WILL BE AMONG THE AREAS IMPACTED BY THIS EVENT. WEST
WINDS 20 TO 30 MPH WILL CAUSE AREAS OF BLOWING SNOW AND REDUCED
VISIBILITIES AT TIMES THROUGH THIS AFTERNOON BEFORE TAPERING OFF
THIS EVENING.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... ARE
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

MTZ005-251900-
/O.NEW.KMSO.WW.Y.0006.061225T1513Z-061225T1900Z/
MISSOULA/BITTERROOT VALLEYS-
813 AM MST MON DEC 25 2006

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

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
WEATHER ADVISORY...WHICH IS IN EFFECT UNTIL NOON MST TODAY. 

A MIXTURE OF SLEET...FREEZING RAIN AND SNOW WILL IMPACT THE
MISSOULA VALLEY AND BITTERROOT VALLEY NORTH OF FLORENCE THROUGH
NOON. WHILE SIGNIFICANT ACCUMULATIONS ARE NOT EXPECTED...ROADWAYS
AND OTHER SURFACES WILL BECOME SLICK. THE PRECIPITATION IS
EXPECTED TO CHANGE OVER TO ALL RAIN BY THIS AFTERNOON AS WARMER
AIR MOVES INTO THE REGION.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

MTZ001-002-251900-
/O.CON.KMSO.SB.Y.0014.000000T0000Z-061226T0600Z/
KOOTENAI/CABINET REGION-WEST GLACIER REGION-
813 AM MST MON DEC 25 2006

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM
MST THIS EVENING...

3 TO 7 INCHES OF SNOW IS EXPECTED BY MONDAY NIGHT ABOVE 3500 FEET
WITH LOCAL AMOUNTS UP TO 9 INCHES AT HIGHER ELEVATIONS IN GLACIER
NATIONAL PARK. 1 TO 3 INCHES OF SNOW IS POSSIBLE BELOW 3500 FEET.
HIGHWAY 2 BETWEEN MARION AND HAPPYS INN...AS WELL AS MARIAS
PASS...WILL BE AMONG THE AREAS IMPACTED BY THIS EVENT. WEST WINDS
20 TO 30 MPH OVER HIGHER TERRAIN WILL CREATE AREAS OF BLOWING SNOW
AT TIMES.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

MTZ004-043-251900-
/O.CON.KMSO.SB.Y.0014.000000T0000Z-061226T0600Z/
LOWER CLARK FORK REGION-POTOMAC/SEELEY LAKE REGION-
813 AM MST MON DEC 25 2006

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM
MST THIS EVENING...

3 TO 7 INCHES OF SNOW IS EXPECTED BY LATE THIS EVENING ABOVE 4000
FEET. LOWER ELEVATIONS WILL SEE A RAIN...SLEET...SNOW MIX EARLY
THIS MORNING...BEFORE PRECIPITATION CHANGES OVER TO ALL RAIN BY
AFTERNOON. LOOKOUT PASS...WILL BE AMONG THE AREAS IMPACTED BY
THIS EVENT. WEST WINDS 20 TO 30 MPH WILL CREATE AREAS OF BLOWING
SNOW AT TIMES AT THE HIGHER ELEVATIONS TODAY BEFORE TAPERING OFF
LATE IN THE DAY.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

IDZ010-251900-
/O.CON.KMSO.SB.Y.0014.061225T1800Z-061226T1200Z/
EASTERN LEMHI COUNTY-
813 AM MST MON DEC 25 2006

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM
MST TUESDAY...

3 TO 7 INCHES OF SNOW IS EXPECTED BY TUESDAY MORNING MAINLY IN
THE MOUNTAINS OF LEMHI COUNTY. WEST WINDS 20 TO 30 MPH OVER HIGHER
TERRAIN WILL CREATE AREAS OF BLOWING SNOW AT TIMES THROUGH TONIGHT. 

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

IDZ009-251900-
/O.CON.KMSO.SB.Y.0014.061225T1800Z-061226T1200Z/
WESTERN LEMHI COUNTY-
813 AM MST MON DEC 25 2006

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM
MST TUESDAY ABOVE 5000 FEET...

3 TO 7 INCHES OF SNOW IN THE MOUNTAINS AND 1 TO 4 INCHES IN THE
VALLEYS IS EXPECTED BY TONIGHT. WEST WINDS 15 TO 30 MPH WILL
CREATE AREAS OF BLOWING SNOW AT TIMES OVER HIGHER TERRAIN.

A SNOW AND BLOWING SNOW ADVISORY MEANS THAT VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. USE
CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

000 
WWUS45 KMSO 251906
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1206 PM MST MON DEC 25 2006

.MODERATE TO HEAVY SNOWFALL RATES WILL CONTINUE IN THE MOUNTAINS
AS A WINTER STORM SYSTEM MOVES ACROSS NORTH CENTRAL IDAHO AND
WESTERN MONTANA. WEAKENING SURFACE PRESSURE GRADIENTS THROUGH THE
AFTERNOON WILL TRANSLATE TO LESS WINDY CONDITIONS IN THE IMPACTED
AREAS. THEREFORE THE WIDESPREAD BLOWING AND DRIFTING SNOW WILL
BECOME LESS OF AN ISSUE AS THE AFTERNOON PROGRESSES. AS A
RESULT...THE WINTER STORM WARNING AS WELL AS THE SNOW AND BLOWING
SNOW ADVISORIES HAVE BEEN CONVERTED OVER TO A HEAVY SNOW WARNING
AND SNOW ADVISORIES.

IDZ005-006-MTZ006-260430-
/O.CAN.KMSO.WS.W.0019.000000T0000Z-061226T1200Z/
/O.NEW.KMSO.HS.W.0018.061225T1906Z-061226T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
BITTERROOT/SAPPHIRE MOUNTAINS-
1206 PM MST MON DEC 25 2006 /1106 AM PST MON DEC 25 2006/

...WINTER STORM WARNING IS CANCELLED...
...HEAVY SNOW WARNING IN EFFECT UNTIL 5 AM MST /4 AM PST/
TUESDAY...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A HEAVY SNOW
WARNING...WHICH IS IN EFFECT UNTIL 5 AM MST /4 AM PST/ TUESDAY.
THIS HEAVY SNOW WARNING REPLACES THE WINTER STORM WARNING THAT WAS
PREVIOUSLY IN EFFECT.

6 TO 12 INCHES OF SNOW WITH LOCAL AMOUNTS UP TO 16 INCHES IN THE
HIGHER TERRAIN ARE EXPECTED BY TUESDAY MORNING ABOVE 5000 FEET.
LOLO PASS WILL BE AMONG THE AREAS IMPACTED BY THIS EVENT. 

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF
YOU MUST...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY.

$$

MTZ001-002-260430-
/O.CAN.KMSO.SB.Y.0014.000000T0000Z-061226T0600Z/
/O.NEW.KMSO.SN.Y.0042.061225T1906Z-061226T0600Z/
KOOTENAI/CABINET REGION-WEST GLACIER REGION-
1206 PM MST MON DEC 25 2006

...SNOW AND BLOWING SNOW ADVISORY IS CANCELLED...
...SNOW ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SNOW
ADVISORY...WHICH IS IN EFFECT UNTIL 11 PM MST THIS EVENING. THIS
SNOW ADVISORY REPLACES THE SNOW AND BLOWING SNOW ADVISORY THAT
WAS PREVIOUSLY IN EFFECT.

3 TO 7 INCHES OF SNOW ARE EXPECTED BY LATE THIS EVENING ACROSS THE
AREA AT ELEVATIONS ABOVE 4000 FEET AND ALSO NEAR LIBBY. OTHER LOW
ELEVATED LOCATIONS CAN EXPECT 1 TO 2 INCHES OF SNOW BY LATE THIS
EVENING AS SNOW LEVELS FALL AFTER SUNSET. US HIGHWAY 2 BETWEEN
HAPPYS INN AND TROY AND ALSO US HIGHWAY 2 HEADING EAST TO MARIAS
PASS FROM HUNGRY HORSE WILL BE AMONG THE AREAS IMPACTED BY THIS
SYSTEM.

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

$$

MTZ004-043-260430-
/O.CAN.KMSO.SB.Y.0014.000000T0000Z-061226T0600Z/
/O.NEW.KMSO.SN.Y.0042.061225T1906Z-061226T0600Z/
LOWER CLARK FORK REGION-POTOMAC/SEELEY LAKE REGION-
1206 PM MST MON DEC 25 2006

...SNOW AND BLOWING SNOW ADVISORY IS CANCELLED...
...SNOW ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SNOW
ADVISORY...WHICH IS IN EFFECT UNTIL 11 PM MST THIS EVENING. THIS
SNOW ADVISORY REPLACES THE SNOW AND BLOWING SNOW ADVISORY THAT WAS
PREVIOUSLY IN EFFECT.

3 TO 7 INCHES OF SNOW ARE EXPECTED BY LATE THIS EVENING ABOVE 4000
FEET. LOWER ELEVATIONS CAN EXPECT 1 TO 3 INCHES OF SNOW BY LATE
EVENING AS SNOW LEVELS FALL AFTER SUNSET. LOOKOUT PASS WILL BE
AMONG THE AREAS IMPACTED BY THIS SYSTEM.

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

$$

IDZ009-010-260430-
/O.CAN.KMSO.SB.Y.0014.000000T0000Z-061226T1200Z/
/O.NEW.KMSO.SN.Y.0042.061225T1906Z-061226T1200Z/
WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY-
1206 PM MST MON DEC 25 2006

...SNOW AND BLOWING SNOW ADVISORY IS CANCELLED...
...SNOW ADVISORY IN EFFECT UNTIL 5 AM MST TUESDAY ABOVE 5000 FEET...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SNOW
ADVISORY...WHICH IS IN EFFECT UNTIL 5 AM MST TUESDAY. THIS
SNOW ADVISORY REPLACES THE SNOW AND BLOWING SNOW ADVISORY THAT WAS
PREVIOUSLY IN EFFECT.

3 TO 7 INCHES OF SNOW ARE EXPECTED BY LATE THIS EVENING ABOVE 5000
FEET. LOWER ELEVATIONS CAN EXPECT 1 TO 3 INCHES OF SNOW BY EARLY
TUESDAY MORNING AS SNOW LEVELS FALL OVERNIGHT. LOST TRAIL PASS WILL BE
AMONG THE AREAS IMPACTED BY THIS SYSTEM.

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

$$

MTZ005-252015-
/O.CAN.KMSO.WW.Y.0006.000000T0000Z-061225T1900Z/
MISSOULA/BITTERROOT VALLEYS-
1206 PM MST MON DEC 25 2006

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER
WEATHER ADVISORY. TEMPERATURES ACROSS MOST OF THE MISSOULA AND
NORTHERN BITTERROOT VALLEYS HAVE RISEN TO BE ABOVE FREEZING.
HOWEVER...SURFACES WILL REMAIN SLICK IN SOME LOCATIONS THROUGH
EARLY AFTERNOON.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
245 PM MST SUN DEC 24 2006

.DISCUSSION...RELATIVELY SUNNY SKIES WILL GIVE WAY TO INCREASING
CLOUDS THROUGH THE EVENING AS ANOTHER PACIFIC SYSTEM HEADS OUR
WAY. THE SYSTEM WILL BEGIN TO PRODUCE SNOW OVER IDAHO AND EXTREME
WESTERN MONTANA PRIOR TO SUNRISE TOMORROW MORNING. IT WILL THEN
IMPACT MOST OF NORTHERN IDAHO AND WESTERN MONTANA THROUGH MONDAY
AND MONDAY NIGHT. THIS EVENT WILL PRIMARILY IMPACT MOUNTAIN
TRAVELERS AS SNOW LEVELS RISE ABOVE MOST VALLEY FLOORS. IT ALSO
DOES NOT LOOK LIKE A WIDESPREAD HEAVY SNOW PRODUCER IN THE HIGHER
TERRAIN. THEREFORE...WENT WITH A WARNING ONLY OVER THE CLEARWATERS
OF IDAHO AND THE BITTERROOTS...WHILE ISSUING AN ADVISORY FOR THE
OTHER IMPACTED MOUNTAINS. THERE COULD BE LOCAL LIGHT
ACCUMULATIONS IN THE VALLEYS...PARTICULARLY FAR NORTHWEST...DUE TO
TRAPPED COLD AIR...BUT FOR THE MOST PART LOWER VALLEY
PRECIPITATION WILL BE RAIN OR A MIX OF RAIN AND SNOW.

THE WINDS DO NOT LOOK DAMAGING WITH THIS EVENT...BUT STRONG
ENOUGH TO CAUSE SOME BLOWING AND DRIFTING AT TIMES. THERE WILL
ALSO BE ENOUGH DOWN GLIDING FLOW INTO THE LOWER HELLS
CANYON/SALMON RIVER REGION AND THE CAMAS PRAIRIE TO WARRANT
ANOTHER WIND ADVISORY. THE WINDS ARE ALREADY BEGINNING TO INCREASE
AT SLATE CREEK AND PITTSBURG LANDING.

SNOW WILL BEGIN TO DECREASE LATE MONDAY NIGHT IN THE NORTH...BUT
HANG ON THROUGH MORNING OVER THE CLEARWATERS AND BITTERROOTS WITH
A CONTINUED JET SUPPORT AND WARM AIR LIFT.

A BRIEF BREAK IN PRECIPITATION WILL OCCUR TUESDAY AS A SHORT LIVED
RIDGE BUILDS OVER THE REGION. HOWEVER...BY WEDNESDAY MORNING...YET
ANOTHER MOIST WEATHER SYSTEM WILL APPROACH THE NORTHERN ROCKIES AS
PROGRESSIVE AND ENERGETIC UPPER LEVEL FLOW CONTINUES. MOISTURE AND
DYNAMICS LOOK FAVORABLE FOR WIDESPREAD PRECIPITATION ACROSS
WESTERN MONTANA AND CENTRAL IDAHO. HOWEVER...BECAUSE SNOW LEVELS
WILL START RELATIVELY HIGH AT ONSET OF PRECIPITATION...EXPECT TO
SEE MODERATE SNOW ACCUMULATION IN THE MOUNTAINS WITH A RAIN SNOW
MIX IN THE VALLEYS. A COLD FRONT WILL PUSH THROUGH THE REGION
WEDNESDAY NIGHT BRINGING SNOW LEVELS DOWN AND PROVIDING A QUICK
SHOT AT ACCUMULATING SNOW IN THE VALLEYS. BIGGEST IMPACT WITH THIS
SYSTEM WILL BE TO HOLIDAY TRAVELERS ON MOUNTAIN PASSES...WHERE
SOME HAZARDOUS DRIVING CONDITIONS MAY BE EXPERIENCED.

THE WEATHER SYSTEM WILL QUICKLY MOVE TO THE SOUTHEAST THURSDAY AS
A STRONG UPPER LEVEL RIDGE BUILDS OVER THE REGION. ALTHOUGH SKIES
WILL BE CLEARING BEHIND THIS SYSTEM...NORTHERLY FLOW ASSOCIATED
WITH THE ADVANCING RIDGE WILL BRING COLD CANADIAN AIR INTO MONTANA
AND IDAHO THURSDAY AFTERNOON. THUS TEMPERATURES ARE EXPECTED TO
WARM LITTLE DURING THE DAY. FRIDAY MORNING A COLD...DRY AIRMASS WILL
COMBINE WITH CLEAR SKIES TO PRODUCE RATHER CHILI LOW
TEMPERATURES. ADDITIONALLY...VALLEY FREEZING FOG WILL FORM AS
INVERSIONS STRENGTHEN UNDER THE VERY STABLE ATMOSPHERE ASSOCIATED
WITH STRONG SURFACE HIGH PRESSURE...AND UPPER LEVEL
RIDGING...LOCATED OVER THE REGION. FREEZING FOG WILL REMAIN IN
PLACE THROUGHOUT THE DAY FRIDAY AND INTO SATURDAY MORNING BEFORE
DISSIPATING AS HIGH PRESSURE MOVES TO THE EAST AND THE UPPER LEVEL
RIDGE IS FLATTENED BY AN APPROACHING PACIFIC STORM SYSTEM.

NEXT WEEKEND THROUGH THE NEW YEARS EVE HOLIDAY FORECAST MODELS
ARE TRENDING TOWARDS A RETURN TO UNSETTLED WEATHER UNDER INCREASED
TROUGHING. ALTHOUGH THIS IS WELL INTO THE FUTURE...THERE IS
INCREASING CONFIDENCE DUE TO SUPPORTIVE CONVECTIVE CONNECTIONS
WITHIN THE TROPICAL PACIFIC.

&&

.AVIATION...SYSTEM WILL BEGIN TO LOWER CEILINGS OVER NORTHERN
IDAHO LATE THIS EVENING. WIDESPREAD MOUNTAIN AND PASS OBSCURATION
AND LOW CEILINGS...ALONG WITH AREAS OF REDUCED VISIBILITIES WILL
DEVELOP MONDAY. SEE APPROPRIATE TAFS AND TWEBS.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...WINTER STORM WARNING FROM 5 AM MONDAY TO 5 AM MST TUESDAY FOR
     BITTERROOT/SAPPHIRE MOUNTAINS.

     SNOW AND BLOWING SNOW ADVISORY FROM 5 AM TO 11 PM MST MONDAY FOR
     KOOTENAI/CABINET REGION-WEST GLACIER REGION.

     SNOW AND BLOWING SNOW ADVISORY FROM 5 AM TO 11 PM MST MONDAY FOR
     LOWER CLARK FORK REGION-POTOMAC/SEELEY LAKE REGION.

ID...WIND ADVISORY UNTIL 7 AM PST MONDAY FOR LOWER HELLS
     CANYON/SALMON RIVER REGION-OROFINO/GRANGEVILLE REGION.

     WINTER STORM WARNING FROM 5 AM MST /4 AM PST/ MONDAY TO 5 AM MST
     /4 AM PST/ TUESDAY FOR NORTHERN CLEARWATER MOUNTAINS-
     SOUTHERN CLEARWATER MOUNTAINS-WESTERN LEMHI COUNTY.

     SNOW AND BLOWING SNOW ADVISORY FROM 8 AM MONDAY TO 5 AM MST
     TUESDAY FOR EASTERN LEMHI COUNTY.

&&

SHORT TERM...WHITMORE
LONG TERM...VIA/DICKERSON
AVIATION...WHITMORE

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MISSOULA MT
235 PM MST SUN DEC 24 2006

IDZ005>010-MTZ001>007-043-251300-
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION-
WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY-KOOTENAI/CABINET REGION-
WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS-
LOWER CLARK FORK REGION-MISSOULA/BITTERROOT VALLEYS-
BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION-
POTOMAC/SEELEY LAKE REGION-
235 PM MST SUN DEC 24 2006 /135 PM PST SUN DEC 24 2006/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
IDAHO...NORTHWEST MONTANA AND WEST CENTRAL MONTANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

PLEASE SEE GTFWSWMSO AND GTFNPWMSO FOR SHORT TERM HEADLINE
DETAILS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

YET ANOTHER MOIST WEATHER SYSTEM WILL AFFECT WESTERN MONTANA AND
NORTH CENTRAL IDAHO WEDNESDAY INTO EARLY THURSDAY MORNING.
MODERATE MOUNTAIN SNOW MAY MAKE TRAVEL OVER MOUNTAIN PASSES
HAZARDOUS. PLEASE STAY TUNED FOR FURTHER DETAILS.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.