Alert archive / Montana / Winter Storm Warnings in 2010

Winter Storm Warning 2, NWS Missoula, MT

January 22, 2010Clearwater County, Idaho County, Lemhi County, Idaho; 4 counties in Montana

NWS Missoula, MT issued this winter storm warning at Jan 22, 2010, 6:46 AM PST for Clearwater County, Idaho County, Lemhi County, Idaho; 4 counties in Montana. It was in force for 37 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 22, 2010, 6:46 AM PST (14:46 UTC)
Expired
Jan 23, 2010, 7:48 PM PST
In force
37 hr
Issued by
NWS Missoula, MT

Counties Clearwater County, ID, Idaho County, ID, Lemhi County, ID, Deer Lodge County, MT, Granite County, MT, Powell County, MT, Silver Bow County, MT

The radar

The Missoula radar (KMSX), 105 km from the middle of the area, began a volume at 14:46 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 2.8 hours before the alert went out and 262 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Spokane, WA at 12:00Z on 2010-01-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 12:00Z on 2010-01-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1436 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

489 
WWUS45 KMSO 221446
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
746 AM MST FRI JAN 22 2010

...WEEKEND WEATHER SYSTEM EXPECTED TO BRING MODERATE TO HEAVY
SNOW ACCUMULATIONS THROUGH SUNDAY...

.AN APPROACHING LOW PRESSURE SYSTEM WILL MOVE NORTH OUT OF THE
GREAT BASIN AREA TODAY AND INTO EASTERN MONTANA TONIGHT. THIS WILL
PROVIDE MUCH OF WESTERN MONTANA AND CENTRAL IDAHO WITH SNOW
THROUGH SUNDAY. MODERATE SNOW ACCUMULATIONS ARE LIKELY DURING
THIS TIME...PARTICULARLY IN THE HIGHER TERRAIN OF CENTRAL IDAHO
AND SOUTHWEST MONTANA.

IDZ010-222300-
/O.UPG.KMSO.WS.A.0002.100123T0700Z-100124T1200Z/
/O.NEW.KMSO.WS.W.0002.100122T1446Z-100124T1200Z/
EASTERN LEMHI COUNTY-
746 AM MST FRI JAN 22 2010

...WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST SUNDAY...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT UNTIL 5 AM MST
SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL ENVELOP SOUTHEAST
  LEMHI COUNTY TODAY...THAN TRANSITION NORTH TONIGHT. THE SNOW
  WILL CONTINUE THROUGH SATURDAY NIGHT. DRIVING CONDITIONS OVER
  BANNOCK PASS AND GILMORE SUMMIT WILL BE IMPACTED TODAY...WITH
  LOST TRAIL PASS TONIGHT. ALL PASSES ARE EXPECTED TO BE IMPACTED
  THROUGH SATURDAY NIGHT. THE LOWER ELEVATIONS OF LEADORE AND
  SALMON WILL SEE LIGHTER ACCUMULATIONS.

* SNOW ACCUMULATIONS: 4 TO 7 INCHES OF SNOW EXPECTED IN LEADORE AND
  SALMON...WITH 10 TO 15 INCHES EXPECTED OVER GILMORE
  SUMMIT...BANNOCK AND LOST TRAIL PASSES. 

* LOCATIONS IMPACTED INCLUDE...BANNOCK PASS...HIGHWAY 28 TENDOY 
  TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...
  LEMHI PASS...SALMON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ002-043-222300-
/O.CON.KMSO.WW.Y.0005.100123T0000Z-100124T0000Z/
WEST GLACIER REGION-POTOMAC/SEELEY LAKE REGION-
746 AM MST FRI JAN 22 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST SATURDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST SATURDAY. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN 
  WITH LIGHTER VALLEY ACCUMULATIONS POSSIBLE BEGINNING THIS 
  EVENING AND CONTINUING THROUGH SATURDAY. 

* SNOW ACCUMULATIONS: 4 TO 7 INCHES AND LOCALLY UP TO 12 INCHES 
  POSSIBLE. 

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

IDZ009-222300-
/O.EXB.KMSO.WS.A.0002.100123T0000Z-100124T1200Z/
WESTERN LEMHI COUNTY-
746 AM MST FRI JAN 22 2010

...WINTER STORM WATCH IN EFFECT FROM 5 PM MST THIS AFTERNOON
THROUGH LATE SATURDAY NIGHT FOR...SHOUP...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM 5 PM MST THIS AFTERNOON
THROUGH LATE SATURDAY NIGHT. 

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL BE DEVELOPING LATE
  THIS AFTERNOON AND WILL CONTINUE THROUGH SATURDAY. 

* SNOW ACCUMULATIONS OF 4 TO 8 INCHES IS EXPECTED IN SHOUP.
  HIGHER AMOUNTS UP TO 10 INCHES IN THE HIGHER TERRAIN. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST
FORECASTS.

&&

$$

IDZ005>008-MTZ006-222300-
/O.EXT.KMSO.WS.A.0002.100123T0000Z-100124T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION-
BITTERROOT/SAPPHIRE MOUNTAINS-
746 AM MST FRI JAN 22 2010 /646 AM PST FRI JAN 22 2010/

...WINTER STORM WATCH NOW IN EFFECT FROM 5 PM MST /4 PM PST/ THIS
AFTERNOON THROUGH LATE SATURDAY NIGHT...

THE WINTER STORM WATCH IS NOW IN EFFECT FROM 5 PM MST /4 PM PST/
THIS AFTERNOON THROUGH LATE SATURDAY NIGHT. 

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL BE DEVELOPING THIS 
  EVENING AND WILL CONTINUE THROUGH LATE SATURDAY NIGHT. DRIVING 
  CONDITIONS OVER LOLO PASS AND LOST TRAIL PASS WILL BE 
  IMPACTED. 

* SNOW ACCUMULATIONS: 5 TO 10 INCHES OF SNOW LIKELY IN THE CAMAS 
  PRAIRIE WITH 10 TO 15 INCHES LIKELY IN THE CLEARWATER AND 
  BITTERROOT/SAPPHIRE MOUNTAINS AND THE PASSES. 

* LOCATIONS IMPACTED INCLUDE...ELK RIVER...HIGHWAY 11 PIERCE TO
  HEADQUARTERS...PIERCE...DIXIE...ELK CITY...HIGHWAY 12 LOWELL TO
  LOLO PASS...CAMAS PRAIRIE...GRANGEVILLE AND VICINITY...GREER
  GRADE...HIGHWAY 12 OROFINO TO KOOSKIA...HIGHWAY 95 SLATE CREEK
  TO RIGGINS...WHITE BIRD GRADE...HIGHWAY 93 SULA TO LOST TRAIL
  PASS...LOLO PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

MTZ007-222300-
/O.CON.KMSO.WS.A.0002.100123T0000Z-100124T0600Z/
BUTTE/BLACKFOOT REGION-
746 AM MST FRI JAN 22 2010

...WINTER STORM WATCH REMAINS IN EFFECT FROM 5 PM MST THIS
AFTERNOON THROUGH SATURDAY EVENING...

A WINTER STORM WATCH REMAINS IN EFFECT FROM 5 PM MST THIS
AFTERNOON THROUGH SATURDAY EVENING. 

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL BE DEVELOPING THIS 
  EVENING AND WILL CONTINUE THROUGH SATURDAY. DRIVING CONDITIONS 
  OVER HOMESTAKE PASS WILL BE IMPACTED. 

* SNOW ACCUMULATIONS: 6 TO 10 INCHES OF SNOW IS EXPECTED WITH 
  LOCAL AMOUNTS OF 12 TO 15 INCHES POSSIBLE IN HIGHER TERRAIN. 

* LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 
  12 GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR
THE LATEST FORECASTS.

&&

$$
10 follow-up statements
866 
WWUS45 KMSO 221606
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
906 AM MST FRI JAN 22 2010

...WEEKEND WEATHER SYSTEM EXPECTED TO BRING MODERATE TO HEAVY
SNOW ACCUMULATIONS THROUGH SUNDAY...

.AN APPROACHING LOW PRESSURE SYSTEM WILL MOVE NORTH OUT OF THE
GREAT BASIN AREA TODAY AND INTO EASTERN MONTANA TONIGHT. THIS
WILL PROVIDE MUCH OF WESTERN MONTANA AND CENTRAL IDAHO WITH SNOW
THROUGH SUNDAY. MODERATE SNOW ACCUMULATIONS ARE LIKELY DURING
THIS TIME...PARTICULARLY IN THE HIGHER TERRAIN OF CENTRAL IDAHO
AND SOUTHWEST MONTANA.

MTZ007-222230-
/O.UPG.KMSO.WS.A.0002.100123T0000Z-100124T0600Z/
/O.EXB.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
BUTTE/BLACKFOOT REGION-
906 AM MST FRI JAN 22 2010

...WINTER STORM WARNING IN EFFECT UNTIL 11 PM MST SATURDAY...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW AND LOCAL BLOWING SNOW...WHICH IS IN
EFFECT UNTIL 11 PM MST SATURDAY. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW IS DEVELOPING THIS
  MORNING OVER SOUTHWEST MONTANA AND WILL SPREAD NORTH THIS
  AFTERNOON AND CONTINUE THROUGH SATURDAY EVENING. WITH AN
  APPROACHING COLD FRONT...BREEZY EAST WINDS WILL IMPACT THE
  PASSES AND CREATE REDUCED VISIBILITIES FROM BLOWING AND DRIFTING
  SNOW. DRIVING CONDITIONS OVER HOMESTAKE AND MCDONALD PASSES
  WILL BE IMPACTED.

* SNOW ACCUMULATIONS: 5 TO 7 INCHES IN BUTTE...ANACONDA AND
  DRUMMOND...WITH 12 TO 15 INCHES EXPECTED OVER THE PASSES AND THE
  HIGHER TERRAIN.

* LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 
  12 GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR
THE LATEST FORECASTS.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
BLOWING SNOW...OR ICE ACCUMULATIONS ARE EXPECTED OR OCCURRING.
STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE.  THIS
WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

IDZ010-222230-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T1200Z/
EASTERN LEMHI COUNTY-
906 AM MST FRI JAN 22 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST SUNDAY. 

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL ENVELOP SOUTHEAST 
  LEMHI COUNTY TODAY...THAN TRANSITION NORTH TONIGHT. THE SNOW 
  WILL CONTINUE THROUGH SATURDAY NIGHT. DRIVING CONDITIONS OVER 
  BANNOCK PASS AND GILMORE SUMMIT WILL BE IMPACTED TODAY...WITH 
  LOST TRAIL PASS TONIGHT. ALL PASSES ARE EXPECTED TO BE 
  IMPACTED THROUGH SATURDAY NIGHT. THE LOWER ELEVATIONS OF 
  LEADORE AND SALMON WILL SEE LIGHTER ACCUMULATIONS. 

* SNOW ACCUMULATIONS: 4 TO 7 INCHES OF SNOW EXPECTED IN LEADORE 
  AND SALMON...WITH 10 TO 15 INCHES EXPECTED OVER GILMORE 
  SUMMIT...BANNOCK AND LOST TRAIL PASSES. 

* LOCATIONS IMPACTED INCLUDE...BANNOCK PASS...HIGHWAY 28 TENDOY 
  TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...
  LEMHI PASS...SALMON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ002-043-222230-
/O.CON.KMSO.WW.Y.0005.100123T0000Z-100124T0000Z/
WEST GLACIER REGION-POTOMAC/SEELEY LAKE REGION-
906 AM MST FRI JAN 22 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST SATURDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST SATURDAY. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN 
  WITH LIGHTER VALLEY ACCUMULATIONS POSSIBLE BEGINNING THIS 
  EVENING AND CONTINUING THROUGH SATURDAY. 

* SNOW ACCUMULATIONS: 4 TO 7 INCHES AND LOCALLY UP TO 12 INCHES 
  POSSIBLE. 

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

IDZ005>009-MTZ006-222230-
/O.CON.KMSO.WS.A.0002.100123T0000Z-100124T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION-
WESTERN LEMHI COUNTY-BITTERROOT/SAPPHIRE MOUNTAINS-
906 AM MST FRI JAN 22 2010 /806 AM PST FRI JAN 22 2010/

...WINTER STORM WATCH REMAINS IN EFFECT FROM 5 PM MST /4 PM PST/
THIS AFTERNOON THROUGH LATE SATURDAY NIGHT...

A WINTER STORM WATCH REMAINS IN EFFECT FROM 5 PM MST /4 PM PST/
THIS AFTERNOON THROUGH LATE SATURDAY NIGHT. 

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL BE DEVELOPING THIS 
  EVENING AND WILL CONTINUE THROUGH LATE SATURDAY NIGHT. DRIVING 
  CONDITIONS OVER LOLO PASS AND LOST TRAIL PASS WILL BE 
  IMPACTED. 

* SNOW ACCUMULATIONS: 5 TO 10 INCHES OF SNOW LIKELY IN THE CAMAS 
  PRAIRIE WITH 10 TO 15 INCHES LIKELY IN THE CLEARWATER AND 
  BITTERROOT/SAPPHIRE MOUNTAINS AND THE PASSES. 

* LOCATIONS IMPACTED INCLUDE...ELK RIVER...HIGHWAY 11 PIERCE TO 
  HEADQUARTERS...PIERCE...DIXIE...ELK CITY...HIGHWAY 12 LOWELL 
  TO LOLO PASS...CAMAS PRAIRIE...GRANGEVILLE AND VICINITY...
  GREER GRADE...HIGHWAY 12 OROFINO TO KOOSKIA...HIGHWAY 95 SLATE 
  CREEK TO RIGGINS...WHITE BIRD GRADE...SHOUP...HIGHWAY 93 SULA 
  TO LOST TRAIL PASS...LOLO PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$
716 
WWUS45 KMSO 222123
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
223 PM MST FRI JAN 22 2010

...WEEKEND WEATHER SYSTEM EXPECTED TO BRING MODERATE TO HEAVY
SNOW ACCUMULATIONS THROUGH LATE SATURDAY...

.AN UPPER LEVEL LOW PRESSURE SYSTEM AND STALLED SURFACE FRONTAL
BOUNDARY WILL INCREASE SNOW ACROSS THE CENTRAL AND SOUTHERN
CLEARWATER MOUNTAINS...THE HIGHER TERRAIN OF LEMHI COUNTY...WHITEBIRD
GRADE AND GRANGEVILLE IN IDAHO AND ALONG THE CONTINENTAL DIVIDE IN
MONTANA TONIGHT THROUGH SATURDAY EVENING. MODERATE SNOW
ACCUMULATIONS ARE LIKELY DURING THIS TIME. IN ADDITION STRONG EAST
WINDS ALONG THE CONTINENTAL DIVIDE WILL RESULT IN AREAS OF BLOWING
AND DRIFTING SNOW REDUCING VISIBILITIES OVER THE PASSES THIS
EVENING. WINDS ARE EXPECTED TO DECREASE SATURDAY.

IDZ005-009-MTZ006-222230-
/O.CAN.KMSO.WS.A.0002.100123T0000Z-100124T1200Z/
NORTHERN CLEARWATER MOUNTAINS-WESTERN LEMHI COUNTY-
BITTERROOT/SAPPHIRE MOUNTAINS-
223 PM MST FRI JAN 22 2010 /123 PM PST FRI JAN 22 2010/

...WINTER STORM WATCH IS CANCELLED...

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

THE HEAVIEST ACCUMULATIONS FROM THE APPROACHING WEATHER SYSTEM
LOOK TO BE SOUTH AND EAST OF THE NORTHERN CLEARWATER
MOUNTAINS...THE BITTERROOT AND SAPPHIRE MOUNTAINS AND WESTERN
LEMHI COUNTY. THEREFORE THE WINTER STORM WATCH HAS BEEN CANCELLED. 

$$

IDZ006-230530-
/O.UPG.KMSO.WS.A.0002.100123T0000Z-100124T1200Z/
/O.EXB.KMSO.WS.W.0002.100123T0000Z-100124T0600Z/
SOUTHERN CLEARWATER MOUNTAINS-
123 PM PST FRI JAN 22 2010

...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO
10 PM PST SATURDAY...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 10 PM PST SATURDAY. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL BE DEVELOPING THIS
  EVENING AND WILL CONTINUE THROUGH SATURDAY EVENING. DRIVING
  CONDITIONS OVER LOLO PASS WILL BE IMPACTED.

* SNOW ACCUMULATIONS: 8 TO 10 INCHES OF SNOW LIKELY WITH LOCALLY
  HIGHER AMOUNTS UP TO 12 INCHES IN THE CLEARWATER MOUNTAINS.

* LOCATIONS IMPACTED INCLUDE...DIXIE...ELK CITY...HIGHWAY 12 
  POWELL TO LOLO PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

IDZ007-230530-
/O.UPG.KMSO.WS.A.0002.100123T0000Z-100124T1200Z/
/O.EXB.KMSO.WS.W.0002.100123T0000Z-100124T0600Z/
OROFINO/GRANGEVILLE REGION-
123 PM PST FRI JAN 22 2010

...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO
10 PM PST SATURDAY...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT
FROM 4 PM THIS AFTERNOON TO 10 PM PST SATURDAY. THE WINTER STORM
WATCH IS NO LONGER IN EFFECT. 

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL BE DEVELOPING THIS
  EVENING AND WILL CONTINUE THROUGH SATURDAY EVENING. DRIVING
  CONDITIONS ON HIGHWAY 95 FROM GRANGEVILLE TOWARD WHITEBIRD GRADE
  AND COTTONWOOD WILL BE IMPACTED.

* SNOW ACCUMULATIONS: 6 TO 8 INCHES OF SNOW LIKELY IN THE CAMAS
  PRAIRIE WITH LOCALLY HIGHER AMOUNTS TO 10 INCHES TOWARD
  WHITEBIRD GRADE.

* LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND 
  VICINITY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

IDZ008-230530-
/O.UPG.KMSO.WS.A.0002.100123T0000Z-100124T1200Z/
/O.EXB.KMSO.WS.W.0002.100123T0000Z-100124T0600Z/
LOWER HELLS CANYON/SALMON RIVER REGION-
123 PM PST FRI JAN 22 2010

...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO
10 PM PST SATURDAY FOR...WHITE BIRD GRADE...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT
FROM 4 PM THIS AFTERNOON TO 10 PM PST SATURDAY. THE WINTER STORM
WATCH IS NO LONGER IN EFFECT. 

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL BE DEVELOPING THIS
  EVENING AND WILL CONTINUE THROUGH SATURDAY EVENING. DRIVING
  CONDITIONS OVER WHITE BIRD GRADE WILL BE IMPACTED.

* SNOW ACCUMULATIONS: 10 TO 12 INCHES OF SNOW LIKELY OVER THE
  WHITE BIRD GRADE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

IDZ010-230530-
/O.EXT.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
EASTERN LEMHI COUNTY-
223 PM MST FRI JAN 22 2010

...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 PM MST SATURDAY...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 11 PM MST
SATURDAY. 

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL RE-DEVELOP OVER
  SOUTHEAST LEMHI COUNTY THIS EVENING...THAN TRANSITION NORTH
  TONIGHT. THE SNOW WILL CONTINUE THROUGH SATURDAY EVENING.
  DRIVING CONDITIONS OVER BANNOCK PASS...LOST TRAIL PASS AND
  GILMORE SUMMIT WILL BE IMPACTED. THE LOWER ELEVATIONS OF
  LEADORE AND SALMON WILL SEE LIGHTER ACCUMULATIONS.

* SNOW ACCUMULATIONS: 2 TO 4 INCHES OF SNOW EXPECTED IN SALMON...WITH
  8 TO 12 INCHES EXPECTED OVER GILMORE SUMMIT...BANNOCK AND LOST
  TRAIL PASSES.

* LOCATIONS IMPACTED INCLUDE...BANNOCK PASS...HIGHWAY 28 TENDOY TO
  LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...LEMHI
  PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ007-230530-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
BUTTE/BLACKFOOT REGION-
223 PM MST FRI JAN 22 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST
SATURDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST
SATURDAY. 

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH SATURDAY
  EVENING. WITH AN APPROACHING COLD FRONT...BREEZY EAST WINDS WILL
  IMPACT THE PASSES AND CREATE REDUCED VISIBILITIES FROM BLOWING
  AND DRIFTING SNOW. DRIVING CONDITIONS OVER HOMESTAKE AND
  MCDONALD PASSES WILL BE IMPACTED.

* SNOW ACCUMULATIONS: 5 TO 7 INCHES IN BUTTE...ANACONDA AND
  DRUMMOND...WITH 10 TO 14 INCHES EXPECTED OVER THE PASSES AND THE
  HIGHER TERRAIN.

* LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 
  12 GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
AND LOCAL BLOWING SNOW... ARE EXPECTED OR OCCURRING. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ002-230530-
/O.EXT.KMSO.WW.Y.0005.100123T0300Z-100124T0000Z/
WEST GLACIER REGION-
223 PM MST FRI JAN 22 2010

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 8 PM THIS EVENING
TO 5 PM MST SATURDAY FOR...HIGHWAY 2 FROM ESSEX TO MARIAS PASS...

THE WINTER WEATHER ADVISORY IS NOW IN EFFECT FROM 8 PM THIS
EVENING TO 5 PM MST SATURDAY. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN
  WITH STRONG EAST WINDS CREATING REDUCED VISIBILITIES FROM
  BLOWING AND DRIFTING SNOW THIS EVENING THROUGH EARLY SATURDAY.

* SNOW ACCUMULATIONS: 3 TO 6 INCHES FROM ESSEX TO MARIAS PASS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ043-230530-
/O.CON.KMSO.WW.Y.0005.100123T0000Z-100124T0000Z/
POTOMAC/SEELEY LAKE REGION-
223 PM MST FRI JAN 22 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST SATURDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST SATURDAY. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN
  WITH LIGHTER VALLEY ACCUMULATIONS BEGINNING THIS EVENING AND
  CONTINUING THROUGH SATURDAY.

* SNOW ACCUMULATIONS: 2 TO 5 INCHES AND LOCALLY UP TO 8 INCHES
  EXPECTED.

* LOCATIONS IMPACTED INCLUDE...HIGHWAY 200 BONNER TO
  GREENOUGH...HIGHWAY 83 SEELEY LAKE TO CONDON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
039 
WWUS45 KMSO 222140 CCA
WSWMSO

URGENT - WINTER WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE MISSOULA MT
238 PM MST FRI JAN 22 2010

...WEEKEND WEATHER SYSTEM EXPECTED TO BRING MODERATE TO HEAVY
SNOW ACCUMULATIONS THROUGH LATE SATURDAY...

.AN UPPER LEVEL LOW PRESSURE SYSTEM AND STALLED SURFACE FRONTAL
BOUNDARY WILL INCREASE SNOW ACROSS THE CENTRAL AND SOUTHERN
CLEARWATER MOUNTAINS...THE HIGHER TERRAIN OF LEMHI COUNTY...WHITEBIRD
GRADE AND GRANGEVILLE IN IDAHO AND ALONG THE CONTINENTAL DIVIDE IN
MONTANA TONIGHT THROUGH SATURDAY EVENING. MODERATE SNOW
ACCUMULATIONS ARE LIKELY DURING THIS TIME. IN ADDITION STRONG EAST
WINDS ALONG THE CONTINENTAL DIVIDE WILL RESULT IN AREAS OF BLOWING
AND DRIFTING SNOW REDUCING VISIBILITIES OVER THE PASSES THIS
EVENING. WINDS ARE EXPECTED TO DECREASE SATURDAY.

IDZ005-009-MTZ006-222245-
/O.CAN.KMSO.WS.A.0002.100123T0000Z-100124T1200Z/
NORTHERN CLEARWATER MOUNTAINS-WESTERN LEMHI COUNTY-
BITTERROOT/SAPPHIRE MOUNTAINS-
238 PM MST FRI JAN 22 2010 /138 PM PST FRI JAN 22 2010/

...WINTER STORM WATCH IS CANCELLED...

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

THE HEAVIEST ACCUMULATIONS FROM THE APPROACHING WEATHER SYSTEM
LOOK TO BE SOUTH AND EAST OF THE NORTHERN CLEARWATER
MOUNTAINS...THE BITTERROOT AND SAPPHIRE MOUNTAINS AND WESTERN
LEMHI COUNTY. THEREFORE THE WINTER STORM WATCH HAS BEEN CANCELLED. 

$$

IDZ006-230600-
/O.UPG.KMSO.WS.A.0002.100123T0000Z-100124T1200Z/
/O.EXB.KMSO.WS.W.0002.100123T0000Z-100124T0600Z/
SOUTHERN CLEARWATER MOUNTAINS-
138 PM PST FRI JAN 22 2010

...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO
10 PM PST SATURDAY...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 10 PM PST SATURDAY. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL BE DEVELOPING THIS
  EVENING AND WILL CONTINUE THROUGH SATURDAY EVENING. DRIVING
  CONDITIONS OVER LOLO PASS WILL BE IMPACTED.

* SNOW ACCUMULATIONS: 8 TO 10 INCHES OF SNOW LIKELY WITH LOCALLY
  HIGHER AMOUNTS UP TO 12 INCHES IN THE CLEARWATER MOUNTAINS.

* LOCATIONS IMPACTED INCLUDE...DIXIE...ELK CITY...HIGHWAY 12 
  POWELL TO LOLO PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

IDZ007-230600-
/O.UPG.KMSO.WS.A.0002.100123T0000Z-100124T1200Z/
/O.COR.KMSO.WS.W.0002.100123T0000Z-100124T0600Z/
OROFINO/GRANGEVILLE REGION-
138 PM PST FRI JAN 22 2010

...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO
10 PM PST SATURDAY FOR THE GRANGEVILLE AND COTTONWOOD REGIONS...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT
FROM 4 PM THIS AFTERNOON TO 10 PM PST SATURDAY. THE WINTER STORM
WATCH IS NO LONGER IN EFFECT. 

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL BE DEVELOPING THIS
  EVENING AND WILL CONTINUE THROUGH SATURDAY EVENING. DRIVING
  CONDITIONS ON HIGHWAY 95 FROM GRANGEVILLE TOWARD WHITEBIRD GRADE
  AND COTTONWOOD WILL BE IMPACTED.

* SNOW ACCUMULATIONS: 6 TO 8 INCHES OF SNOW LIKELY IN THE CAMAS
  PRAIRIE WITH LOCALLY HIGHER AMOUNTS TO 10 INCHES TOWARD
  WHITEBIRD GRADE.

* LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND 
  VICINITY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

IDZ008-230600-
/O.UPG.KMSO.WS.A.0002.100123T0000Z-100124T1200Z/
/O.EXB.KMSO.WS.W.0002.100123T0000Z-100124T0600Z/
LOWER HELLS CANYON/SALMON RIVER REGION-
138 PM PST FRI JAN 22 2010

...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO
10 PM PST SATURDAY FOR...WHITE BIRD GRADE...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT
FROM 4 PM THIS AFTERNOON TO 10 PM PST SATURDAY. THE WINTER STORM
WATCH IS NO LONGER IN EFFECT. 

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL BE DEVELOPING THIS
  EVENING AND WILL CONTINUE THROUGH SATURDAY EVENING. DRIVING
  CONDITIONS OVER WHITE BIRD GRADE WILL BE IMPACTED.

* SNOW ACCUMULATIONS: 10 TO 12 INCHES OF SNOW LIKELY OVER THE
  WHITE BIRD GRADE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

IDZ010-230600-
/O.EXT.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
EASTERN LEMHI COUNTY-
238 PM MST FRI JAN 22 2010

...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 PM MST SATURDAY...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 11 PM MST
SATURDAY. 

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL RE-DEVELOP OVER
  SOUTHEAST LEMHI COUNTY THIS EVENING...THAN TRANSITION NORTH
  TONIGHT. THE SNOW WILL CONTINUE THROUGH SATURDAY EVENING.
  DRIVING CONDITIONS OVER BANNOCK PASS...LOST TRAIL PASS AND
  GILMORE SUMMIT WILL BE IMPACTED. THE LOWER ELEVATIONS OF
  LEADORE AND SALMON WILL SEE LIGHTER ACCUMULATIONS.

* SNOW ACCUMULATIONS: 2 TO 4 INCHES OF SNOW EXPECTED IN SALMON...WITH
  8 TO 12 INCHES EXPECTED OVER GILMORE SUMMIT...BANNOCK AND LOST
  TRAIL PASSES.

* LOCATIONS IMPACTED INCLUDE...BANNOCK PASS...HIGHWAY 28 TENDOY TO
  LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...LEMHI
  PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ007-230600-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
BUTTE/BLACKFOOT REGION-
238 PM MST FRI JAN 22 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST
SATURDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST
SATURDAY. 

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH SATURDAY
  EVENING. WITH AN APPROACHING COLD FRONT...BREEZY EAST WINDS WILL
  IMPACT THE PASSES AND CREATE REDUCED VISIBILITIES FROM BLOWING
  AND DRIFTING SNOW. DRIVING CONDITIONS OVER HOMESTAKE AND
  MCDONALD PASSES WILL BE IMPACTED.

* SNOW ACCUMULATIONS: 5 TO 7 INCHES IN BUTTE...ANACONDA AND
  DRUMMOND...WITH 10 TO 14 INCHES EXPECTED OVER THE PASSES AND THE
  HIGHER TERRAIN.

* LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 
  12 GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
AND LOCAL BLOWING SNOW... ARE EXPECTED OR OCCURRING. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

MTZ002-230600-
/O.EXT.KMSO.WW.Y.0005.100123T0300Z-100124T0000Z/
WEST GLACIER REGION-
238 PM MST FRI JAN 22 2010

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 8 PM THIS EVENING
TO 5 PM MST SATURDAY FOR...HIGHWAY 2 FROM ESSEX TO MARIAS PASS...

THE WINTER WEATHER ADVISORY IS NOW IN EFFECT FROM 8 PM THIS
EVENING TO 5 PM MST SATURDAY. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN
  WITH STRONG EAST WINDS CREATING REDUCED VISIBILITIES FROM
  BLOWING AND DRIFTING SNOW THIS EVENING THROUGH EARLY SATURDAY.

* SNOW ACCUMULATIONS: 3 TO 6 INCHES FROM ESSEX TO MARIAS PASS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ043-230600-
/O.CON.KMSO.WW.Y.0005.100123T0000Z-100124T0000Z/
POTOMAC/SEELEY LAKE REGION-
238 PM MST FRI JAN 22 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST SATURDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST SATURDAY. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN
  WITH LIGHTER VALLEY ACCUMULATIONS BEGINNING THIS EVENING AND
  CONTINUING THROUGH SATURDAY.

* SNOW ACCUMULATIONS: 2 TO 5 INCHES AND LOCALLY UP TO 8 INCHES
  EXPECTED.

* LOCATIONS IMPACTED INCLUDE...HIGHWAY 200 BONNER TO
  GREENOUGH...HIGHWAY 83 SEELEY LAKE TO CONDON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
363 
WWUS45 KMSO 230356
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
856 PM MST FRI JAN 22 2010


IDZ010-231200-
/O.CAN.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
/O.EXB.KMSO.WW.Y.0005.000000T0000Z-100124T0600Z/
EASTERN LEMHI COUNTY-
856 PM MST FRI JAN 22 2010

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 PM MST SATURDAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT UNTIL 11 PM MST
SATURDAY. THE WINTER STORM WARNING HAS BEEN CANCELLED.

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN
  WITH LIGHTER VALLEY ACCUMULATIONS CONTINUING THROUGH SATURDAY.

* SNOW ACCUMULATIONS: 2 TO 5 INCHES VALLEYS...4 TO 7 INCHES OVER
  THE PASSES.

* LOCATIONS IMPACTED INCLUDE...BANNOCK PASS...HIGHWAY 28 TENDOY 
  TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...
  LEMHI PASS...SALMON

&&

$$

MTZ007-231200-
/O.CAN.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
/O.EXB.KMSO.WW.Y.0005.000000T0000Z-100124T0600Z/
BUTTE/BLACKFOOT REGION-
856 PM MST FRI JAN 22 2010

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 PM MST SATURDAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT UNTIL 11 PM MST
SATURDAY. THE WINTER STORM WARNING HAS BEEN CANCELLED.

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN
  ...WITH LIGHTER VALLEY ACCUMULATIONS. STRONG EAST WINDS WILL
  CREATE REDUCED VISIBILITIES FROM BLOWING AND DRIFTING SNOW
  THROUGH EARLY SATURDAY MAINLY MACDONALD PASS THROUGH GARRISON. 

* SNOW ACCUMULATIONS: 2 TO 5 INCHES AND LOCALLY UP TO 8 INCHES
  EXPECTED.

* LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 
  12 GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS


&&

$$

IDZ006-231200-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
SOUTHERN CLEARWATER MOUNTAINS-
756 PM PST FRI JAN 22 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST
SATURDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST
SATURDAY. 

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH
  SATURDAY EVENING. DRIVING CONDITIONS OVER LOLO PASS WILL BE
  IMPACTED.

* SNOW ACCUMULATIONS: 6 TO 10 INCHES OF SNOW. LITTLE OR NO
  ACCUMULATION BELOW 2000 FEET.

* LOCATIONS IMPACTED INCLUDE...DIXIE...ELK CITY...HIGHWAY 12 
  LOWELL TO LOLO PASS

&&

$$

IDZ007-231200-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
OROFINO/GRANGEVILLE REGION-
756 PM PST FRI JAN 22 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST
SATURDAY FOR THE GRANGEVILLE AND COTTONWOOD AREAS...

A WINTER STORM WARNING FOR HEAVY SNOW REMAINS IN EFFECT UNTIL 10
PM PST SATURDAY.

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH
  SATURDAY EVENING. DRIVING CONDITIONS ON HIGHWAY 95 FROM
  GRANGEVILLE TOWARD WHITE BIRD GRADE AND COTTONWOOD WILL BE
  IMPACTED.

* SNOW ACCUMULATIONS: 6 TO 8 INCHES OF SNOW LIKELY IN THE CAMAS 
  PRAIRIE WITH LOCALLY HIGHER AMOUNTS TO 10 INCHES TOWARD 
  WHITE BIRD GRADE. 

* LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND 
  VICINITY.


&&

$$

IDZ008-231200-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
LOWER HELLS CANYON/SALMON RIVER REGION-
756 PM PST FRI JAN 22 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST
SATURDAY FOR...WHITE BIRD GRADE...

A WINTER STORM WARNING REMAINS FOR HEAVY SNOW IS IN EFFECT UNTIL
10 PM PST SATURDAY.

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH
  SATURDAY EVENING. DRIVING CONDITIONS OVER WHITE BIRD GRADE WILL
  BE IMPACTED.

* SNOW ACCUMULATIONS: 10 TO 12 INCHES OF SNOW LIKELY OVER THE 
  WHITE BIRD GRADE. 


&&

$$

MTZ006-231200-
/O.EXB.KMSO.WW.Y.0005.000000T0000Z-100124T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
856 PM MST FRI JAN 22 2010

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 PM MST SATURDAY...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT UNTIL 11 PM MST
SATURDAY.

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN 
  WITH LIGHTER VALLEY ACCUMULATIONS BEGINNING THIS EVENING AND 
  CONTINUING THROUGH SATURDAY. 

* SNOW ACCUMULATIONS: 2 TO 5 INCHES AND LOCALLY UP TO 8 INCHES 
  EXPECTED. 

* LOCATIONS IMPACTED INCLUDE...HIGHWAY 93 SULA TO LOST TRAIL 
  PASS...LOLO PASS...CONNER TO WEST FORK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MTZ002-231200-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0000Z/
WEST GLACIER REGION-
856 PM MST FRI JAN 22 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST
SATURDAY HIGHWAY 2 FROM ESSEX TO MARIAS PASS...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST
SATURDAY. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN
  WITH STRONG EAST WINDS CREATING REDUCED VISIBILITIES FROM
  BLOWING AND DRIFTING SNOW THROUGH EARLY SATURDAY.

* SNOW ACCUMULATIONS: 3 TO 6 INCHES FROM ESSEX TO MARIAS PASS.


&&

$$

MTZ043-231200-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0000Z/
POTOMAC/SEELEY LAKE REGION-
856 PM MST FRI JAN 22 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST
SATURDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST
SATURDAY. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN
  WITH LIGHTER VALLEY ACCUMULATIONS...WILL CONTINUE THROUGH
  SATURDAY.

* SNOW ACCUMULATIONS: 2 TO 5 INCHES AND LOCALLY UP TO 8 INCHES 
  EXPECTED. 

* LOCATIONS IMPACTED INCLUDE...HELLGATE CANYON...HIGHWAY 200 
  BONNER TO GREENOUGH...HIGHWAY 83 SEELEY LAKE TO CONDON...I- 90 
  EAST MISSOULA TO BEARMOUTH

&&

$$
589 
WWUS45 KMSO 231127
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
427 AM MST SAT JAN 23 2010

IDZ006-231900-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
SOUTHERN CLEARWATER MOUNTAINS-
327 AM PST SAT JAN 23 2010

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

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

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH 
  THIS EVENING. DRIVING CONDITIONS OVER LOLO PASS WILL BE 
  IMPACTED. 

* SNOW ACCUMULATIONS: 6 TO 10 INCHES OF SNOW. LITTLE OR NO 
  ACCUMULATION BELOW 2000 FEET. 

* LOCATIONS IMPACTED INCLUDE...DIXIE...ELK CITY...HIGHWAY 12 
  LOWELL TO LOLO PASS

$$

IDZ007-231900-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
OROFINO/GRANGEVILLE REGION-
327 AM PST SAT JAN 23 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING FOR THE GRANGEVILLE AND COTTONWOOD AREAS...

A WINTER STORM WARNING FOR HEAVY SNOW REMAINS IN EFFECT UNTIL 10
PM PST THIS EVENING.

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH 
  THIS EVENING. DRIVING CONDITIONS ON HIGHWAY 95 FROM 
  GRANGEVILLE TOWARD WHITE BIRD GRADE AND COTTONWOOD WILL BE 
  IMPACTED. 

* SNOW ACCUMULATIONS: 6 TO 8 INCHES OF SNOW LIKELY IN THE CAMAS 
  PRAIRIE WITH LOCALLY HIGHER AMOUNTS TO 10 INCHES TOWARD WHITE 
  BIRD GRADE. 

* LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND 
  VICINITY

$$

IDZ008-231900-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
LOWER HELLS CANYON/SALMON RIVER REGION-
327 AM PST SAT JAN 23 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING FOR...WHITE BIRD GRADE...

A WINTER STORM WARNING FOR HEAVY SNOW REMAINS IN EFFECT UNTIL 10
PM PST THIS EVENING.

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH 
  THIS EVENING. DRIVING CONDITIONS OVER WHITE BIRD GRADE 
  WILL BE IMPACTED. 

* SNOW ACCUMULATIONS: 10 TO 12 INCHES OF SNOW LIKELY OVER THE 
  WHITE BIRD GRADE. 

&&

$$

MTZ002-231900-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0000Z/
WEST GLACIER REGION-
427 AM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON FOR HIGHWAY 2 FROM ESSEX TO MARIAS PASS...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN
  WITH STRONG EAST WINDS CREATING REDUCED VISIBILITIES FROM
  BLOWING AND DRIFTING SNOW THROUGH THIS EVENING.

* SNOW ACCUMULATIONS: 3 TO 6 INCHES FROM ESSEX TO MARIAS PASS.

&&

$$

MTZ043-231900-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0000Z/
POTOMAC/SEELEY LAKE REGION-
427 AM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN 
  WITH LIGHTER VALLEY ACCUMULATIONS...WILL CONTINUE THROUGH 
  THIS EVENING. 

* SNOW ACCUMULATIONS: 2 TO 5 INCHES AND LOCALLY UP TO 8 INCHES 
  EXPECTED. 

* LOCATIONS IMPACTED INCLUDE...HELLGATE CANYON...HIGHWAY 200 
  BONNER TO GREENOUGH...HIGHWAY 83 SEELEY LAKE TO CONDON...I- 90 
  EAST MISSOULA TO BEARMOUTH

$$

IDZ010-231900-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0600Z/
EASTERN LEMHI COUNTY-
427 AM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN 
  WITH LIGHTER VALLEY ACCUMULATIONS CONTINUING THROUGH TONIGHT. 

* SNOW ACCUMULATIONS: 2 TO 5 INCHES VALLEYS...4 TO 7 INCHES OVER 
  THE PASSES. 

* LOCATIONS IMPACTED INCLUDE...BANNOCK PASS...HIGHWAY 28 TENDOY 
  TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...
  LEMHI PASS...SALMON

$$

MTZ007-231900-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0600Z/
BUTTE/BLACKFOOT REGION-
427 AM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN
  WITH LIGHTER VALLEY ACCUMULATIONS THROUGH THIS EVENING. STRONG EAST
  WINDS WILL CREATE REDUCED VISIBILITIES FROM BLOWING AND DRIFTING
  SNOW...MAINLY OVER MACDONALD PASS THROUGH GARRISON.

* SNOW ACCUMULATIONS: 2 TO 5 INCHES AND LOCALLY UP TO 8 INCHES 
  EXPECTED. 

* LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 
  12 GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS

$$

MTZ006-231900-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
427 AM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN
  WITH LIGHTER VALLEY ACCUMULATIONS THROUGH THIS EVENING.

* SNOW ACCUMULATIONS: 2 TO 5 INCHES AND LOCALLY UP TO 8 INCHES 
  EXPECTED. 

* LOCATIONS IMPACTED INCLUDE...HIGHWAY 93 SULA TO LOST TRAIL 
  PASS...LOLO PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
385 
WWUS45 KMSO 231615 AAA
WSWMSO

URGENT - WINTER WEATHER MESSAGE...UPDATED
NATIONAL WEATHER SERVICE MISSOULA MT
915 AM MST SAT JAN 23 2010

MTZ043-231715-
/O.CAN.KMSO.WW.Y.0005.000000T0000Z-100124T0000Z/
POTOMAC/SEELEY LAKE REGION-
915 AM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY IS CANCELLED...

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

SPOTTER REPORTS AND CAMERAS INDICATE THE SNOW HAS DECREASED
SIGNIFICANTLY OVER THE SEELEY/SWAN REGION WITH ONLY LIGHT
ACCUMULATIONS REPORTED OVERNIGHT. STILL EXPECT LIGHT SNOW SHOWERS
THROUGH THE DAY IN THIS REGION...HOWEVER ADDITIONAL ACCUMULATIONS
WILL BE VERY LIGHT. THEREFORE THE WINTER WEATHER ADVISORY HAS BEEN
CANCELLED.

$$

IDZ010-231715-
/O.CAN.KMSO.WW.Y.0005.000000T0000Z-100124T0600Z/
EASTERN LEMHI COUNTY-
915 AM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY IS CANCELLED...

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

SPOTTER REPORTS AND CAMERAS INDICATE THE SNOW HAS DECREASED
SIGNIFICANTLY OVER EASTERN LEMHI COUNTY. STILL EXPECT LIGHT SNOW
SHOWERS THROUGH THE DAY IN THIS REGION...HOWEVER ADDITIONAL
ACCUMULATIONS WILL BE LIGHT. THEREFORE THE WINTER WEATHER
ADVISORY HAS BEEN CANCELLED.


$$

IDZ006-240015-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
SOUTHERN CLEARWATER MOUNTAINS-
815 AM PST SAT JAN 23 2010

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

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

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH
  THIS EVENING OVER THE SOUTHERN CLEARWATERS. DIXIE AND ELK CITY
  ARE EXPECTED TO SEE THE HEAVIEST ACCUMULATIONS. FURTHER
  NORTH...SNOW WILL BECOME MORE SHOWERY IN NATURE WITH LESS
  ACCUMULATIONS. 

* SNOW ACCUMULATIONS: 6 TO 10 INCHES OF SNOW ARE EXPECTED OVER THE
  SOUTHERN CLEARWATERS INCLUDING DIXIE AND ELK CITY. FURTHER NORTH
  ACCUMULATIONS WILL BE LESS MORE IN THE 3 TO 6 INCH RANGE
  INCLUDING THE HIGHWAY 12 CORRIDOR FROM POWELL TO LOLO PASS. LITTLE
  OR NO ACCUMULATION BELOW 2000 FEET.

* LOCATIONS IMPACTED INCLUDE...DIXIE...ELK CITY...HIGHWAY 12 
  POWELL TO LOLO PASS

$$

IDZ007-240015-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
OROFINO/GRANGEVILLE REGION-
815 AM PST SAT JAN 23 2010

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

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

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH
  THIS EVENING. DRIVING CONDITIONS ON HIGHWAY 95 FROM GRANGEVILLE
  TOWARD WHITE BIRD GRADE AND COTTONWOOD WILL BE IMPACTED. GREER
  GRADE FROM WEIPPE TOWARD HEADQUARTERS WILL ALSO BE IMPACTED.  

* SNOW ACCUMULATIONS: 6 TO 8 INCHES OF SNOW LIKELY IN THE CAMAS 
  PRAIRIE WITH LOCALLY HIGHER AMOUNTS TO 10 INCHES TOWARD WHITE 
  BIRD GRADE. 

* LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND 
  VICINITY AND GREER GRADE.

$$

IDZ008-240015-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
LOWER HELLS CANYON/SALMON RIVER REGION-
815 AM PST SAT JAN 23 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING FOR...WHITE BIRD GRADE...

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

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH 
  THIS EVENING. DRIVING CONDITIONS OVER WHITE BIRD GRADE WILL BE 
  IMPACTED. 

* SNOW ACCUMULATIONS: 10 TO 12 INCHES OF SNOW LIKELY OVER THE 
  WHITE BIRD GRADE. 

&&

$$

MTZ002-240000-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0000Z/
WEST GLACIER REGION-
915 AM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON FOR...HIGHWAY 2 FROM ESSEX TO MARIAS PASS...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN 
  WITH BREEZY EAST WINDS CREATING REDUCED VISIBILITIES FROM 
  BLOWING AND DRIFTING SNOW THROUGH THIS EVENING. 

* SNOW ACCUMULATIONS: 2 TO 4 INCHES FROM ESSEX TO MARIAS PASS.

&&

$$

MTZ007-240015-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0600Z/
BUTTE/BLACKFOOT REGION-
915 AM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN
  WITH LIGHTER VALLEY ACCUMULATIONS THROUGH THIS EVENING. EAST
  WINDS WILL CREATE REDUCED VISIBILITIES FROM BLOWING AND DRIFTING
  SNOW...MAINLY OVER MACDONALD PASS THROUGH GARRISON.

* SNOW ACCUMULATIONS: 2 TO 5 INCHES AND LOCALLY UP TO 8 INCHES 
  EXPECTED. 

* LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 
  12 GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS

$$

MTZ006-240015-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
915 AM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN 
  WITH LIGHTER VALLEY ACCUMULATIONS THROUGH THIS EVENING. 

* SNOW ACCUMULATIONS: 2 TO 4 INCHES AND LOCALLY UP TO 6 INCHES 
  EXPECTED. 

* LOCATIONS IMPACTED INCLUDE...HIGHWAY 93 SULA TO LOST TRAIL 
  PASS...LOLO PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
089 
WWUS45 KMSO 232153
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
253 PM MST SAT JAN 23 2010

IDZ006-240600-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
SOUTHERN CLEARWATER MOUNTAINS-
153 PM PST SAT JAN 23 2010

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

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

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH
  THIS EVENING OVER THE SOUTHERN CLEARWATERS. DIXIE AND ELK CITY
  ARE EXPECTED TO SEE THE HEAVIEST ACCUMULATIONS. FURTHER NORTH...
  SNOW WILL BECOME MORE SHOWERY IN NATURE WITH LESS ACCUMULATIONS.

* SNOW ACCUMULATIONS: 6 TO 10 INCHES OF SNOW ARE EXPECTED OVER THE
  SOUTHERN CLEARWATERS INCLUDING DIXIE AND ELK CITY. FURTHER NORTH
  ACCUMULATIONS WILL BE LESS...IN THE 3 TO 6 INCH RANGE...
  INCLUDING THE HIGHWAY 12 CORRIDOR FROM POWELL TO LOLO PASS.
  LITTLE OR NO ACCUMULATION BELOW 2000 FEET.

* LOCATIONS IMPACTED INCLUDE...DIXIE...ELK CITY...HIGHWAY 12 POWELL
  TO LOLO PASS

$$

IDZ008-240600-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
LOWER HELLS CANYON/SALMON RIVER REGION-
153 PM PST SAT JAN 23 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING FOR...WHITE BIRD GRADE...

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

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH 
  THIS EVENING. DRIVING CONDITIONS OVER WHITE BIRD GRADE WILL BE 
  IMPACTED. 

* SNOW ACCUMULATIONS: 8 TO 10 INCHES OF SNOW LIKELY OVER THE WHITE
  BIRD GRADE.

&&

$$

IDZ007-240600-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
OROFINO/GRANGEVILLE REGION-
153 PM PST SAT JAN 23 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING FOR GRANGEVILLE...COTTONWOOD AND GREER GRADE...

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

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH 
  THIS EVENING. DRIVING CONDITIONS ON HIGHWAY 95 FROM 
  GRANGEVILLE TOWARD WHITE BIRD GRADE AND COTTONWOOD WILL BE 
  IMPACTED. GREER GRADE FROM WEIPPE TOWARD HEADQUARTERS WILL 
  ALSO BE IMPACTED. 

* SNOW ACCUMULATIONS: 4 TO 6 INCHES OF SNOW LIKELY IN THE CAMAS
  PRAIRIE WITH LOCALLY HIGHER AMOUNTS TO 8 INCHES TOWARD WHITE
  BIRD GRADE.

* LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND 
  VICINITY...GREER GRADE

$$

MTZ002-240000-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0000Z/
WEST GLACIER REGION-
253 PM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON FOR...HIGHWAY 2 FROM ESSEX TO MARIAS PASS...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN 
  WITH BREEZY EAST WINDS CREATING REDUCED VISIBILITIES FROM 
  BLOWING AND DRIFTING SNOW THROUGH THIS EVENING. 

* SNOW ACCUMULATIONS: 2 TO 4 INCHES FROM ESSEX TO MARIAS PASS.

&&

$$

MTZ006-007-240600-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION-
253 PM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN 
  WITH LIGHTER VALLEY ACCUMULATIONS THROUGH THIS EVENING. EAST 
  WINDS WILL CREATE REDUCED VISIBILITIES FROM BLOWING AND 
  DRIFTING SNOW...MAINLY OVER MACDONALD PASS THROUGH GARRISON. 

* SNOW ACCUMULATIONS: 2 TO 5 INCHES AND LOCALLY UP TO 8 INCHES 
  EXPECTED. 

* LOCATIONS IMPACTED INCLUDE...HIGHWAY 93 SULA TO LOST TRAIL 
  PASS...LOLO PASS...BUTTE...GEORGETOWN LAKE...HIGHWAY 12 
  GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS

$$
100 
WWUS45 KMSO 232346
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
446 PM MST SAT JAN 23 2010

MTZ002-240100-
/O.CAN.KMSO.WW.Y.0005.000000T0000Z-100124T0000Z/
WEST GLACIER REGION-
446 PM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY IS CANCELLED FOR HIGHWAY 2 ESSEX TO MARIAS PASS...

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

SNOWFALL HAS DECREASED OVER THE AREA...WITH VERY LIGHT
ACCUMULATIONS EXPECTED OVERNIGHT. 

$$

IDZ006-240600-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
SOUTHERN CLEARWATER MOUNTAINS-
346 PM PST SAT JAN 23 2010

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

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

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH 
  THIS EVENING OVER THE SOUTHERN CLEARWATERS. DIXIE AND ELK CITY 
  ARE EXPECTED TO SEE THE HEAVIEST ACCUMULATIONS. FURTHER 
  NORTH... SNOW WILL BECOME MORE SHOWERY IN NATURE WITH LESS 
  ACCUMULATIONS. 

* SNOW ACCUMULATIONS: 6 TO 10 INCHES OF SNOW ARE EXPECTED OVER 
  THE SOUTHERN CLEARWATERS INCLUDING DIXIE AND ELK CITY. FURTHER 
  NORTH ACCUMULATIONS WILL BE LESS...IN THE 3 TO 6 INCH RANGE... 
  INCLUDING THE HIGHWAY 12 CORRIDOR FROM POWELL TO LOLO PASS. 
  LITTLE OR NO ACCUMULATION BELOW 2000 FEET. 

* LOCATIONS IMPACTED INCLUDE...DIXIE...ELK CITY...HIGHWAY 12 
  LOWELL TO LOLO PASS

$$

IDZ008-240600-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
LOWER HELLS CANYON/SALMON RIVER REGION-
346 PM PST SAT JAN 23 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING FOR...WHITE BIRD GRADE...

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

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH 
  THIS EVENING. DRIVING CONDITIONS OVER WHITE BIRD GRADE WILL BE 
  IMPACTED. 

* SNOW ACCUMULATIONS: 8 TO 10 INCHES OF SNOW LIKELY OVER THE 
  WHITE BIRD GRADE. 

&&

$$

IDZ007-240600-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
OROFINO/GRANGEVILLE REGION-
346 PM PST SAT JAN 23 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING FOR GRANGEVILLE...COTTONWOOD AND GREER GRADE...

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

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH 
  THIS EVENING. DRIVING CONDITIONS ON HIGHWAY 95 FROM 
  GRANGEVILLE TOWARD WHITE BIRD GRADE AND COTTONWOOD WILL BE 
  IMPACTED. GREER GRADE FROM WEIPPE TOWARD HEADQUARTERS WILL 
  ALSO BE IMPACTED. 

* SNOW ACCUMULATIONS: 4 TO 6 INCHES OF SNOW LIKELY IN THE CAMAS 
  PRAIRIE WITH LOCALLY HIGHER AMOUNTS TO 8 INCHES TOWARD WHITE 
  BIRD GRADE. 

* LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND 
  VICINITY...GREER GRADE

$$

MTZ006-007-240600-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION-
446 PM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN 
  WITH LIGHTER VALLEY ACCUMULATIONS THROUGH THIS EVENING. EAST 
  WINDS WILL CREATE REDUCED VISIBILITIES FROM BLOWING AND 
  DRIFTING SNOW...MAINLY OVER MACDONALD PASS THROUGH GARRISON. 

* SNOW ACCUMULATIONS: 2 TO 5 INCHES AND LOCALLY UP TO 8 INCHES 
  EXPECTED. 

* LOCATIONS IMPACTED INCLUDE...HIGHWAY 93 SULA TO LOST TRAIL 
  PASS...LOLO PASS...BUTTE...GEORGETOWN LAKE...HIGHWAY 12 
  GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS

$$
149 
WWUS45 KMSO 240228
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
728 PM MST SAT JAN 23 2010

IDZ006-240330-
/O.CAN.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
SOUTHERN CLEARWATER MOUNTAINS-
628 PM PST SAT JAN 23 2010

...WINTER STORM WARNING IS CANCELLED FOR THE SOUTHERN CLEARWATER MOUNTAINS...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER
STORM WARNING FOR THE SOUTHERN CLEARWATER MOUNTAINS.

$$

IDZ008-240600-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
LOWER HELLS CANYON/SALMON RIVER REGION-
628 PM PST SAT JAN 23 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING FOR...WHITE BIRD GRADE...

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

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH
  THIS EVENING. DRIVING CONDITIONS OVER WHITE BIRD GRADE WILL BE
  IMPACTED BY VISIBILITY REDUCTIONS AND SLICK SURFACES.

* SNOW ACCUMULATIONS: AN ADDITIONAL 1 TO 3 INCHES OF SNOW.

&&

$$

IDZ007-240600-
/O.CON.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
OROFINO/GRANGEVILLE REGION-
628 PM PST SAT JAN 23 2010

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

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

* IMPACTS/TIMING: MODERATE TO HEAVY SNOW WILL CONTINUE THROUGH
  THIS EVENING. DRIVING CONDITIONS ON HIGHWAY 95 FROM GRANGEVILLE
  TOWARD WHITE BIRD GRADE WILL BE IMPACTED BY LOWERED
  VISIBILITIES AND SLICK SURFACES.

* SNOW ACCUMULATIONS: AN ADDITIONAL 1 TO 3 INCHES OF SNOW FROM
  GRANGEVILLE TOWARD WHITE BIRD GRADE.

* LOCATIONS IMPACTED INCLUDE...GRANGEVILLE AND VICINITY.

$$

MTZ006-007-240600-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION-
728 PM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

* IMPACTS/TIMING: MODERATE SNOW ACCUMULATIONS IN HIGHER TERRAIN 
  WITH LIGHTER VALLEY ACCUMULATIONS THROUGH THIS EVENING. EAST 
  WINDS WILL CREATE REDUCED VISIBILITIES FROM BLOWING AND 
  DRIFTING SNOW...MAINLY OVER MACDONALD PASS THROUGH GARRISON. 

* SNOW ACCUMULATIONS: AN ADDITIONAL 1 TO 3 INCHES EXPECTED.

* LOCATIONS IMPACTED INCLUDE...HIGHWAY 93 SULA TO LOST TRAIL
  PASS...LOLO PASS...BUTTE...GEORGETOWN LAKE...HOMESTAKE
  PASS...MACDONALD PASS

$$
429 
WWUS45 KMSO 240348
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
848 PM MST SAT JAN 23 2010

IDZ007-008-240500-
/O.CAN.KMSO.WS.W.0002.000000T0000Z-100124T0600Z/
OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION-
748 PM PST SAT JAN 23 2010

...WINTER STORM WARNING IS CANCELLED FOR THE GRANGEVILLE AREA...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER
STORM WARNING FOR WHITE BIRD GRADE AND THE GRANGEVILLE AREA.

$$

MTZ006-007-240600-
/O.CON.KMSO.WW.Y.0005.000000T0000Z-100124T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION-
848 PM MST SAT JAN 23 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

* IMPACTS/TIMING: LINGERING SNOW WILL CREATE AREAS OF REDUCED
  VISIBILITIES AND SLICK ROADS.

* SNOW ACCUMULATIONS: UP TO 2 ADDITIONAL INCHES EXPECTED.

* LOCATIONS IMPACTED INCLUDE...HIGHWAY 93 SULA TO LOST TRAIL 
  PASS...LOLO PASS...BUTTE...GEORGETOWN LAKE...HIGHWAY 12 
  GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS

$$

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Missoula, MT wrote its last area forecast discussion before this winter storm warning went out at Jan 22, 2:43 AM PST, 4 hours 3 minutes earlier.

Area forecast discussion, Jan 22, 2:43 AM PST, 4 hours 3 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
343 AM MST FRI JAN 22 2010

...WEEKEND WEATHER SYSTEM EXPECTED TO BRING MODERATE TO HEAVY SNOW
ACCUMULATIONS THROUGH SUNDAY...

.DISCUSSION...TODAY WILL BE A TRANSITORY PERIOD AS THE UPCOMING
WINTER WEATHER SYSTEM MOVES FURTHER NORTH AND INTO THE REGION.
INCREASING CLOUDS CAN BE EXPECTED WITH LIGHT SNOW BEGINNING THIS
EVENING IN SOUTHWEST MONTANA AND PORTIONS OF CENTRAL IDAHO. DURING
THIS TIME A RAIN SNOW MIX IS POSSIBLE IN IDAHO VALLEYS...BUT
AS THE LOW MOVES FURTHER NORTH AND EAST OVERNIGHT...PRECIPITATION
WILL TRANSITION TO ALL SNOW AND REMAIN AS SNOW FOR THE REST OF THE
WEEKEND ACROSS THE NORTHERN ROCKIES.

CONCERNS WITH THIS SYSTEM AS OF NOW ARE SNOWFALL POTENTIALS OVER
CENTRAL IDAHO...IN THE HIGHER TERRAIN OF CENTRAL MONTANA...AND
ALONG THE CONTINENTAL DIVIDE BEGINNING LATER THIS EVENING AND
CONTINUING THROUGH SUNDAY MORNING. WHILE THE LOW WILL MOVE EAST
OF THE DIVIDE BY SUNDAY AND WILL TAKE QUITE A BIT OF MOISTURE WITH
IT...WEST TO NORTHWESTERLY FLOW OVER CENTRAL IDAHO WILL ONLY HELP
TO ENHANCE SNOWFALL BEGINNING SATURDAY. THIS IS WHEN THE BULK OF
SNOW IS EXPECTED TO FALL IN THIS REGION. THE BITTERROOT MOUNTAINS
WILL ALSO SEE QUITE A BIT OF UPSLOPE ENHANCEMENT DURING THIS
TIME...WITH BUTTE/BLACKFOOT REGION ALSO LIKELY TO SEE SIGNIFICANT
SNOW. THEREFORE...A WINTER STORM WATCH HAS BEEN ISSUED FOR THESE
AREAS BEGINNING LATE TONIGHT. DETAILS IN TIMING AND SNOWFALL
AMOUNTS STILL NEED TO BE ADDRESSED...SO THESE LOCATIONS COULD VERY
WELL SEE AN UPGRADE TO A WINTER STORM WARNING IF SNOWFALL AMOUNTS
REMAIN CONSISTENT. PLEASE STAY TUNED TO ANY UPDATES TO THE
FORECAST.

ELSEWHERE...A WINTER WEATHER ADVISORY HAS BEEN ISSUED FOR THE WEST
GLACIER AND SEELEY LAKE REGION. AS OF NOW THIS AREA SHOULD SEE A
PERIOD OF LIGHT TO MODERATE SNOWFALL...WITH HIGHER AMOUNTS
POSSIBLE IN THE HIGHER TERRAIN. NORTHWEST MONTANA SHOULD SEE THE
LEAST AMOUNT OF PRECIPITATION FROM THIS SYSTEM AS THEY LOOK TO
REMAIN IN DRIER NORTHERLY FLOW FOR MOST OF THIS TIME FRAME.

A RIDGE OF HIGH PRESSURE WILL BUILD OVER THE NORTHERN ROCKIES SUNDAY
AND SUNDAY NIGHT ALLOWING FOR THE DEVELOPMENT OF VALLEY INVERSIONS. MOST
VALLEYS OF WESTERN MONTANA AND NORTH CENTRAL IDAHO SHOULD SEE FOG
DEVELOPING BY MONDAY MORNING. THE RIDGE WILL BE SHORT LIVED AS THE
UPPER LEVEL PATTERN WILL BECOME WESTERLY WITH AMPLE MOISTURE MOVING
INTO THE REGION BY MONDAY AFTERNOON. THE NORTHERN ROCKIES APPEARS TO
BE BETWEEN SYSTEMS AS THE BULK OF THE MOISTURE AND ENERGY WILL BE
SOUTH OF THE REGION...BUT A COOLER THAN NORMAL AIRMASS WILL SETTLE INTO
THE AREA.

&&

.AVIATION...A LOW PRESSURE SYSTEM IS EXPECTED TO MOVE OUT OF THE
GREAT BASIN AREA INTO EASTERN MONTANA. THIS LOW WILL CAUSE CLOUDS
AND PRECIPITATION TO MOVE NORTHWARD INTO SOUTHWEST MONTANA AND
NORTH CENTRAL IDAHO TODAY THROUGH TONIGHT. THE CLOUDS WILL OBSCURE
MOUNTAINS AND PASSES AT TIMES...WHILE THE HEAVIER SNOW SHOWERS
WILL CAUSE VISIBILITIES TO DROP DRAMATICALLY. KBTM AND KSMN
TERMINALS WILL SEE THE BIGGEST IMPACT FROM THIS SYSTEM. LIGHT SNOW
IS EXPECTED TO START FALLING AROUND 18Z TO 20Z AT THE TWO
TERMINALS AND INTENSIFY THROUGH OUT THE NIGHT.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...WINTER STORM WATCH FROM LATE TONIGHT THROUGH LATE SATURDAY NIGHT
     FOR BITTERROOT/SAPPHIRE MOUNTAINS.

     WINTER WEATHER ADVISORY FROM 5 PM THIS AFTERNOON TO 5 PM MST
     SATURDAY FOR POTOMAC/SEELEY LAKE REGION-WEST GLACIER REGION.

     WINTER STORM WATCH FROM THIS AFTERNOON THROUGH SATURDAY EVENING
     FOR BUTTE/BLACKFOOT REGION.

ID...WINTER STORM WATCH FROM LATE TONIGHT THROUGH LATE SATURDAY NIGHT
     FOR EASTERN LEMHI COUNTY-LOWER HELLS CANYON/SALMON RIVER
     REGION-NORTHERN CLEARWATER MOUNTAINS-OROFINO/GRANGEVILLE
     REGION-SOUTHERN CLEARWATER MOUNTAINS.

&&

SHORT TERM...ALLEGRETTO
LONG TERM....SMITH
AVIATION...SMITH

The office that day

Everything else NWS Missoula, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 22, 2:47 AM PSTWinter Storm WatchMSOClearwater, Idaho, Lemhi11 hr
Jan 22, 2:47 AM PSTWinter Weather AdvisoryMSOLemhi43 hr

Nearby

Winter Storm Warnings in Montana, 2010Winter Storm Warnings in Idaho, 2010Every winter storm warning in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.