Alert archive / Idaho / Winter Storm Warnings in 2008

Winter Storm Warning 5, NWS Missoula, MT

January 30, 2008Clearwater County, Idaho County, Idaho

NWS Missoula, MT issued this winter storm warning at Jan 30, 2008, 1:03 PM PST for Clearwater County, Idaho County, Idaho. It took effect at Jan 31, 2008, 2:00 AM PST. It was in force for 4 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 30, 2008, 1:03 PM PST (21:03 UTC)
In effect from
Jan 31, 2008, 2:00 AM PST
Expired
Jan 31, 2008, 5:31 AM PST
In force
4 hr
Issued by
NWS Missoula, MT

Counties Clearwater County, ID, Idaho County, ID

The radar

The Missoula radar (KMSX), 148 km from the middle of the area, began a volume at 21:02 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, 9.1 hours before the alert went out and 172 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 2008-01-30Temperature 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 2008-01-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 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
815 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
94 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.

000 
WWUS45 KMSO 302103
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
203 PM MST WED JAN 30 2008

.A MAJOR PACIFIC STORM IS EXPECTED TO SLAM INTO NORTHCENTRAL IDAHO
AND WESTERN MONTANA LATE TONIGHT THROUGH THURSDAY. SIGNIFICANT AMOUNTS
OF MOISTURE WILL SPREAD ACROSS THE REGION WITH STRONG OROGRAPHIC
FLOW ENHANCING THE SNOW OVER THE HIGHER TERRAIN. IN ADDITION TO
THE SNOW...STRONG WINDS WILL IMPACT PARTS OF THE
REGION...ESPECIALLY IMMEDIATELY DOWNSTREAM OF MAJOR MOUNTAIN
RANGES. 

MTZ004-310500-
/O.UPG.KMSO.WS.A.0007.080131T0800Z-080201T0600Z/
/O.NEW.KMSO.HS.W.0005.080131T0800Z-080201T1200Z/
LOWER CLARK FORK REGION-
203 PM MST WED JAN 30 2008

...HEAVY SNOW WARNING IN EFFECT FROM 1 AM THURSDAY TO 5 AM MST
FRIDAY...
...WINTER STORM WATCH NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A HEAVY SNOW
WARNING...WHICH IS IN EFFECT FROM 1 AM THURSDAY TO 5 AM MST
FRIDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. 

A STRONG WEATHER SYSTEM IS EXPECTED TO BRING A PROLONGED PERIOD OF
MODERATE TO HEAVY SNOW. TOTAL SNOW AMOUNTS BY EARLY FRIDAY
MORNING WILL BE 12 TO 20 INCHES WITH THE HEAVIER AMOUNTS FALLING OVER
LOOKOUT PASS. ADDITIONALLY...GUSTY WINDS WILL OCCASIONALLY PRODUCE AREAS OF
BLOWING AND DRIFTING SNOW THROUGH THE MOUNTAIN PASS.

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.

$$

MTZ001-310500-
/O.UPG.KMSO.WS.A.0007.080131T0800Z-080201T0600Z/
/O.NEW.KMSO.HS.W.0005.080131T1200Z-080201T0600Z/
KOOTENAI/CABINET REGION-
203 PM MST WED JAN 30 2008

...HEAVY SNOW WARNING IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY...
...WINTER STORM WATCH NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A HEAVY SNOW
WARNING...WHICH IS IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY. THE
WINTER STORM WATCH IS NO LONGER IN EFFECT. 

A STRONG WEATHER SYSTEM IS EXPECTED TO BRING PERIODS OF MODERATE
TO HEAVY SNOW TO THE KOOTENAI AND CABINET REGION. 6 TO 12 INCHES
OF NEW SNOW IS LIKELY LATE TONIGHT AND THURSDAY IN THE VALLEYS AND
UP TO 18 INCHES OVER THE HIGHER TERRAIN. 

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.

$$

IDZ005-310500-
/O.UPG.KMSO.WS.A.0007.080131T0800Z-080201T0600Z/
/O.NEW.KMSO.HS.W.0005.080131T0800Z-080201T1200Z/
NORTHERN CLEARWATER MOUNTAINS-
103 PM PST WED JAN 30 2008

...HEAVY SNOW WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 4 AM PST
FRIDAY...
...WINTER STORM WATCH NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A HEAVY SNOW
WARNING...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 4 AM PST
FRIDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. 

A STRONG WEATHER SYSTEM IS EXPECTED TO BRING A PROLONGED PERIOD OF
MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE NORTHERN
CLEARWATER MOUNTAINS. TOTAL SNOW AMOUNTS BY EARLY FRIDAY MORNING WILL BE
8 TO 12 INCHES IN THE VALLEYS FROM PIERCE TO HEADQUARTERS...AND UP
TO 20 INCHES OVER THE HIGHER TERRAIN. 

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.

$$

MTZ006-310500-
/O.UPG.KMSO.WS.A.0007.080131T1200Z-080201T0600Z/
/O.NEW.KMSO.HS.W.0005.080131T1200Z-080201T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
203 PM MST WED JAN 30 2008

...HEAVY SNOW WARNING IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY...
...WINTER STORM WATCH NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A HEAVY SNOW
WARNING...WHICH IS IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY. THE
WINTER STORM WATCH IS NO LONGER IN EFFECT. 

A STRONG WEATHER SYSTEM IS EXPECTED TO BRING A PROLONGED PERIOD OF
MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE BITTERROOT
MOUNTAINS. TOTAL SNOW AMOUNTS FOR THURSDAY AND THURSDAY EVENING
WILL BE 7 TO 15 INCHES...WITH THE HEAVIEST AMOUNTS OVER LOLO PASS AND
LOST TRAIL PASS. ADDITIONALLY...GUSTY WINDS WILL OCCASIONALLY
PRODUCE AREAS OF BLOWING AND DRIFTING SNOW THROUGH THE MOUNTAIN
PASSES.

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.

$$

MTZ002-310500-
/O.UPG.KMSO.WS.A.0007.080131T1200Z-080201T0600Z/
/O.NEW.KMSO.HS.W.0005.080131T1200Z-080201T0600Z/
WEST GLACIER REGION-
203 PM MST WED JAN 30 2008

...HEAVY SNOW WARNING IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY...
...WINTER STORM WATCH NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A HEAVY SNOW
WARNING...WHICH IS IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY. THE
WINTER STORM WATCH IS NO LONGER IN EFFECT. 

A STRONG WEATHER SYSTEM IS EXPECTED TO BRING A PROLONGED PERIOD OF
MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE WEST
GLACIER REGION. TOTAL SNOW AMOUNTS FOR THURSDAY AND THURSDAY
EVENING WILL BE 8 TO 12 INCHES WITH THE HEAVIEST AMOUNTS OVER
MARIAS PASS. THE GUSTY WINDS WILL OCCASIONALLY PRODUCE AREAS OF
BLOWING AND DRIFTING SNOW THROUGH THE MOUNTAIN PASS.

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.

$$

IDZ006-310500-
/O.UPG.KMSO.WS.A.0007.080131T1200Z-080201T0600Z/
/O.NEW.KMSO.HS.W.0005.080131T0800Z-080201T1200Z/
SOUTHERN CLEARWATER MOUNTAINS-
103 PM PST WED JAN 30 2008

...HEAVY SNOW WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 4 AM PST
FRIDAY...
...WINTER STORM WATCH NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A HEAVY SNOW
WARNING...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 4 AM PST
FRIDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. 

A STRONG WEATHER SYSTEM IS EXPECTED TO BRING A PROLONGED PERIOD OF
MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE SOUTHERN
CLEARWATER MOUNTAINS. TOTAL SNOW AMOUNTS BY EARLY FRIDAY MORNING WILL BE
8 TO 12 INCHES IN THE VALLEYS...AND UP TO 16 INCHES OVER THE
HIGHER TERRAIN.

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.

$$

IDZ010-310500-
/O.NEW.KMSO.HS.W.0005.080131T1200Z-080201T0600Z/
EASTERN LEMHI COUNTY-
203 PM MST WED JAN 30 2008

...HEAVY SNOW WARNING IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY
FOR LOST TRAIL PASS ABOVE 5000 FEET...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A HEAVY SNOW
WARNING FOR LOST TRAIL PASS ABOVE 5000 FEET...WHICH IS IN EFFECT
FROM 5 AM TO 11 PM MST THURSDAY.

A STRONG WEATHER SYSTEM IS EXPECTED TO BRING A PROLONGED PERIOD OF
MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE LOST
TRAIL PASS TRAVEL CORRIDOR. TOTAL SNOW AMOUNTS FOR THURSDAY AND
THURSDAY EVENING WILL BE 10 TO 14 INCHES. THIS WARNING INCLUDES
HIGHWAY 93 FROM ROUGHLY GIBBONSVILLE TO LOST TRAIL PASS.

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.

$$

IDZ007-310500-
/O.NEW.KMSO.WS.W.0005.080131T1000Z-080131T2200Z/
OROFINO/GRANGEVILLE REGION-
103 PM PST WED JAN 30 2008

...WINTER STORM WARNING IN EFFECT FROM 2 AM TO 2 PM PST
THURSDAY FOR THE CAMAS PRAIRIE INCLUDING GRANGEVILLE...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
STORM WARNING FOR THE CAMAS PRAIRIE INCLUDING GRANGEVILLE...WHICH IS IN
EFFECT FROM 2 AM TO 2 PM PST THURSDAY.

A STRONG PACIFIC STORM IS EXPECTED TO PRODUCE SOUTH WINDS 30 TO 40
MPH WITH GUSTS TO 55 MPH LATE TONIGHT AND THURSDAY IN THE
GRANGEVILLE AREA. THE STRONG WINDS ARE EXPECTED TO PRODUCE NEAR
WHITEOUT CONDITIONS AT TIMES DUE TO WIDESPREAD BLOWING SNOW. MANY
ROADS MAY DRIFT SHUT DURING THIS WINDSTORM.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS STRONG WINDS AND
BLOWING SNOW ARE LIKELY. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR
IMPOSSIBLE.

$$

MTZ043-310500-
/O.NEW.KMSO.SN.Y.0010.080131T1200Z-080201T0600Z/
POTOMAC/SEELEY LAKE REGION-
203 PM MST WED JAN 30 2008

...SNOW ADVISORY IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SNOW
ADVISORY...WHICH IS IN EFFECT FROM 5 AM TO 11 PM MST THURSDAY. 

A STRONG WEATHER SYSTEM IS EXPECTED TO BRING MODERATE SNOW...PLUS
GUSTY WINDS AT TIMES TO THE POTOMAC AND SEELEY LAKE AREA. TOTAL
SNOW AMOUNTS FOR THURSDAY AND THURSDAY EVENING WILL BE 4 TO 8 INCHES.

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.

$$
4 follow-up statements
000 
WWUS45 KMSO 310439
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
939 PM MST WED JAN 30 2008

.A MAJOR PACIFIC STORM IS EXPECTED TO SLAM INTO NORTH CENTRAL
IDAHO AND WESTERN MONTANA LATE TONIGHT THROUGH THURSDAY.
SIGNIFICANT AMOUNTS OF MOISTURE WILL SPREAD ACROSS THE REGION
WITH STRONG OROGRAPHIC FLOW ENHANCING THE SNOW OVER THE HIGHER
TERRAIN. IN ADDITION TO THE SNOW...STRONG WINDS WILL IMPACT PARTS
OF THE REGION...ESPECIALLY IMMEDIATELY DOWNSTREAM OF MAJOR
MOUNTAIN RANGES.

IDZ005-006-311200-
/O.CON.KMSO.HS.W.0005.080131T0800Z-080201T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
839 PM PST WED JAN 30 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
4 AM PST FRIDAY...

A HEAVY SNOW WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
4 AM PST FRIDAY. 

A STRONG WEATHER SYSTEM IS EXPECTED TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE
SOUTHERN CLEARWATER MOUNTAINS. TOTAL SNOW AMOUNTS BY EARLY FRIDAY
MORNING WILL BE 8 TO 12 INCHES IN THE VALLEYS...AND UP TO
16 INCHES OVER THE HIGHER TERRAIN.

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.

$$

MTZ004-311200-
/O.CON.KMSO.HS.W.0005.080131T0800Z-080201T1200Z/
LOWER CLARK FORK REGION-
939 PM MST WED JAN 30 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT FROM 1 AM THURSDAY TO
5 AM MST FRIDAY...

A HEAVY SNOW WARNING REMAINS IN EFFECT FROM 1 AM THURSDAY TO 5 AM
MST FRIDAY. 

A STRONG WEATHER SYSTEM IS EXPECTED TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW. TOTAL SNOW AMOUNTS BY EARLY FRIDAY
MORNING WILL BE 12 TO 20 INCHES WITH THE HEAVIER AMOUNTS FALLING
OVER LOOKOUT PASS. ADDITIONALLY...GUSTY WINDS WILL OCCASIONALLY
PRODUCE AREAS OF BLOWING AND DRIFTING SNOW THROUGH THE MOUNTAIN
PASS.

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.

$$

MTZ001-002-311200-
/O.CON.KMSO.HS.W.0005.080131T1200Z-080201T0600Z/
KOOTENAI/CABINET REGION-WEST GLACIER REGION-
939 PM MST WED JAN 30 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT FROM 5 AM TO 11 PM MST
THURSDAY...

A HEAVY SNOW WARNING REMAINS IN EFFECT FROM 5 AM TO 11 PM MST
THURSDAY. 

A STRONG WEATHER SYSTEM IS EXPECTED TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE WEST
GLACIER REGION. TOTAL SNOW AMOUNTS FOR THURSDAY AND THURSDAY
EVENING WILL BE 8 TO 12 INCHES WITH THE HEAVIEST AMOUNTS OVER
MARIAS PASS. THE GUSTY WINDS WILL OCCASIONALLY PRODUCE AREAS OF
BLOWING AND DRIFTING SNOW THROUGH MOUNTAIN PASSES.

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.

$$

MTZ006-311200-
/O.CON.KMSO.HS.W.0005.080131T1200Z-080201T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
939 PM MST WED JAN 30 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT FROM 5 AM TO 11 PM MST
THURSDAY...

A HEAVY SNOW WARNING REMAINS IN EFFECT FROM 5 AM TO 11 PM MST
THURSDAY. 

A STRONG WEATHER SYSTEM IS EXPECTED TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE
BITTERROOT MOUNTAINS. TOTAL SNOW AMOUNTS FOR THURSDAY AND
THURSDAY EVENING WILL BE 7 TO 15 INCHES...WITH THE HEAVIEST
AMOUNTS OVER LOLO PASS AND LOST TRAIL PASS. ADDITIONALLY...GUSTY
WINDS WILL OCCASIONALLY PRODUCE AREAS OF BLOWING AND DRIFTING
SNOW THROUGH THE MOUNTAIN PASSES.

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.

$$

IDZ010-311200-
/O.CON.KMSO.HS.W.0005.080131T1200Z-080201T0600Z/
EASTERN LEMHI COUNTY-
939 PM MST WED JAN 30 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT FROM 5 AM TO 11 PM MST
THURSDAY ABOVE 5000 FEET...

A HEAVY SNOW WARNING ABOVE 5000 FEET REMAINS IN EFFECT FROM 5 AM
TO 11 PM MST THURSDAY. 

A STRONG WEATHER SYSTEM IS EXPECTED TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE LOST
TRAIL PASS TRAVEL CORRIDOR. TOTAL SNOW AMOUNTS FOR THURSDAY AND
THURSDAY EVENING WILL BE 10 TO 14 INCHES. THIS WARNING INCLUDES
HIGHWAY 93 FROM ROUGHLY GIBBONSVILLE TO LOST TRAIL PASS.

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.

$$

IDZ007-311200-
/O.CON.KMSO.WS.W.0005.080131T1000Z-080131T2200Z/
OROFINO/GRANGEVILLE REGION-
839 PM PST WED JAN 30 2008

...WINTER STORM WARNING REMAINS IN EFFECT FROM 2 AM TO 2 PM PST
THURSDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 2 AM TO 2 PM PST
THURSDAY. 

A STRONG PACIFIC STORM IS EXPECTED TO PRODUCE SOUTH WINDS 30 TO
40 MPH WITH GUSTS TO 55 MPH LATE TONIGHT AND THURSDAY IN THE
GRANGEVILLE AREA. THE STRONG WINDS ARE EXPECTED TO PRODUCE NEAR
WHITEOUT CONDITIONS AT TIMES DUE TO WIDESPREAD BLOWING SNOW. SNOW
DRIFTS MAY CLOSE ROADS DURING THIS WINDSTORM.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS STRONG WINDS AND
BLOWING SNOW ARE LIKELY. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR
IMPOSSIBLE.

$$

MTZ043-311200-
/O.CON.KMSO.SN.Y.0010.080131T1200Z-080201T0600Z/
POTOMAC/SEELEY LAKE REGION-
939 PM MST WED JAN 30 2008

...SNOW ADVISORY REMAINS IN EFFECT FROM 5 AM TO 11 PM MST
THURSDAY...

A SNOW ADVISORY REMAINS IN EFFECT FROM 5 AM TO 11 PM MST
THURSDAY. 

A STRONG WEATHER SYSTEM IS EXPECTED TO BRING MODERATE SNOW...PLUS
GUSTY WINDS AT TIMES TO THE POTOMAC AND SEELEY LAKE AREA. TOTAL
SNOW AMOUNTS FOR THURSDAY AND THURSDAY EVENING WILL BE 4 TO
8 INCHES.

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.

$$
000 
WWUS45 KMSO 311058
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
358 AM MST THU JAN 31 2008

IDZ010-312100-
/O.NEW.KMSO.BS.Y.0001.080131T1200Z-080201T0000Z/
/O.CON.KMSO.HS.W.0005.080131T1200Z-080201T0600Z/
EASTERN LEMHI COUNTY-
358 AM MST THU JAN 31 2008

...BLOWING SNOW ADVISORY IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING ABOVE 5000 FEET...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A BLOWING
SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON.
THIS REPLACES THE WIND ADVISORY THAT WAS PREVIOUSLY IN EFFECT. A
HEAVY SNOW WARNING ABOVE 5000 FEET REMAINS IN EFFECT UNTIL 11 PM
MST THIS EVENING.

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE LOST
TRAIL PASS TRAVEL CORRIDOR. TOTAL SNOW AMOUNTS THROUGH THIS EVENING
WILL BE 10 TO 14 INCHES. THIS WARNING INCLUDES HIGHWAY 93 FROM
ROUGHLY GIBBONSVILLE TO LOST TRAIL PASS AND ALSO RECREATION AREAS
NEAR MOCCASIN CREEK SOUTHWEST OF SALMON.

IN ADDITION...SOUTHERLY WINDS OF 20 TO 30 MPH SUSTAINED WITH GUSTS
TO AROUND 45 MPH WILL CREATE SIGNIFICANT BLOWING AND DRIFTING SNOW
ALONG THE HIGHWAY 28 CORRIDOR BETWEEN TENDOY AND LEADORE.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS. A BLOWING SNOW ADVISORY MEANS
THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW
AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

$$

IDZ005-006-312100-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
258 AM PST THU JAN 31 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY...

A HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE
SOUTHERN CLEARWATER MOUNTAINS. TOTAL SNOW AMOUNTS BY EARLY FRIDAY
MORNING WILL BE 8 TO 12 INCHES IN THE VALLEYS...AND UP TO 16
INCHES OVER THE HIGHER TERRAIN.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS. 

$$

MTZ004-312100-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T1200Z/
LOWER CLARK FORK REGION-
358 AM MST THU JAN 31 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

A HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW. TOTAL SNOW AMOUNTS BY EARLY FRIDAY
MORNING WILL BE 12 TO 20 INCHES WITH THE HEAVIER AMOUNTS FALLING
OVER LOOKOUT PASS. IN ADDITION...GUSTY WINDS WILL OCCASIONALLY
PRODUCE AREAS OF BLOWING AND DRIFTING SNOW THROUGH MOUNTAIN PASSES.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS. 

$$

MTZ001-002-312100-
/O.CON.KMSO.HS.W.0005.080131T1200Z-080201T0600Z/
KOOTENAI/CABINET REGION-WEST GLACIER REGION-
358 AM MST THU JAN 31 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE WEST
GLACIER REGION. TOTAL SNOW AMOUNTS THROUGH THIS EVENING WILL BE 8
TO 12 INCHES WITH THE HEAVIEST AMOUNTS OVER MARIAS PASS. THE GUSTY
WINDS WILL OCCASIONALLY PRODUCE AREAS OF BLOWING AND DRIFTING SNOW
THROUGH MOUNTAIN PASSES.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS. 

$$

MTZ006-312100-
/O.CON.KMSO.HS.W.0005.080131T1200Z-080201T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
358 AM MST THU JAN 31 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE
BITTERROOT MOUNTAINS. TOTAL SNOW AMOUNTS THROUGH THIS EVENING WILL
BE 7 TO 15 INCHES...WITH THE HEAVIEST AMOUNTS OVER LOLO PASS AND
LOST TRAIL PASS. ADDITIONALLY...GUSTY WINDS WILL OCCASIONALLY
PRODUCE AREAS OF BLOWING AND DRIFTING SNOW THROUGH THE MOUNTAIN
PASSES.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS. 

$$

IDZ007-312100-
/O.CON.KMSO.WS.W.0005.000000T0000Z-080131T2200Z/
OROFINO/GRANGEVILLE REGION-
258 AM PST THU JAN 31 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON. 

A STRONG PACIFIC STORM WILL CONTINUE TO PRODUCE 25 TO 35 MPH WITH
GUSTS TO 50 MPH THIS AFTERNOON IN THE GRANGEVILLE AREA. THE STRONG
WINDS WILL PRODUCE NEAR WHITEOUT CONDITIONS AT TIMES DUE TO
WIDESPREAD BLOWING SNOW.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS STRONG WINDS AND
BLOWING SNOW ARE LIKELY. THIS WILL MAKE TRAVEL VERY HAZARDOUS.

$$

MTZ043-312100-
/O.CON.KMSO.SN.Y.0010.080131T1200Z-080201T0600Z/
POTOMAC/SEELEY LAKE REGION-
358 AM MST THU JAN 31 2008

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

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

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING MODERATE SNOW...PLUS
GUSTY WINDS AT TIMES TO THE POTOMAC AND SEELEY LAKE AREA. TOTAL
SNOW AMOUNTS THROUGH THIS EVENING WILL BE 4 TO 8 INCHES.

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.

$$
000 
WWUS45 KMSO 311210
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
510 AM MST THU JAN 31 2008

IDZ010-312100-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
/O.CON.KMSO.BS.Y.0001.000000T0000Z-080201T0000Z/
EASTERN LEMHI COUNTY-
510 AM MST THU JAN 31 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING ABOVE 5000 FEET...
...BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

A HEAVY SNOW WARNING ABOVE 5000 FEET REMAINS IN EFFECT UNTIL
11 PM MST THIS EVENING. A BLOWING SNOW ADVISORY REMAINS IN EFFECT
UNTIL 5 PM MST THIS AFTERNOON. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE LOST
TRAIL PASS TRAVEL CORRIDOR. TOTAL SNOW AMOUNTS THROUGH THIS
EVENING WILL BE 10 TO 14 INCHES. THIS WARNING INCLUDES HIGHWAY
93 FROM ROUGHLY GIBBONSVILLE TO LOST TRAIL PASS AND ALSO
RECREATION AREAS NEAR MOCCASIN CREEK SOUTHWEST OF SALMON.

IN ADDITION...SOUTHERLY WINDS OF 20 TO 30 MPH SUSTAINED WITH
GUSTS TO AROUND 45 MPH WILL CREATE SIGNIFICANT BLOWING AND
DRIFTING SNOW IN THE VALLEY BOTTOMS...ESPECIALLY ALONG THE
HIGHWAY 28 CORRIDOR BETWEEN TENDOY AND LEADORE AND NEAR KRILEY
CREEK.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS. A BLOWING SNOW ADVISORY MEANS
THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING
SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS.

$$

IDZ005-006-312100-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
410 AM PST THU JAN 31 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY...

A HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE
SOUTHERN CLEARWATER MOUNTAINS. TOTAL SNOW AMOUNTS BY EARLY FRIDAY
MORNING WILL BE 8 TO 12 INCHES IN THE VALLEYS...AND UP TO
16 INCHES OVER THE HIGHER TERRAIN.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS.

$$

MTZ004-312100-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T1200Z/
LOWER CLARK FORK REGION-
510 AM MST THU JAN 31 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

A HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW. TOTAL SNOW AMOUNTS BY EARLY FRIDAY
MORNING WILL BE 12 TO 20 INCHES WITH THE HEAVIER AMOUNTS FALLING
OVER LOOKOUT PASS. IN ADDITION...GUSTY WINDS WILL OCCASIONALLY
PRODUCE AREAS OF BLOWING AND DRIFTING SNOW THROUGH MOUNTAIN
PASSES.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS.

$$

MTZ001-002-312100-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
KOOTENAI/CABINET REGION-WEST GLACIER REGION-
510 AM MST THU JAN 31 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE WEST
GLACIER REGION. TOTAL SNOW AMOUNTS THROUGH THIS EVENING WILL BE
8 TO 12 INCHES WITH THE HEAVIEST AMOUNTS OVER MARIAS PASS. THE
GUSTY WINDS WILL OCCASIONALLY PRODUCE AREAS OF BLOWING AND
DRIFTING SNOW THROUGH MOUNTAIN PASSES.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS.

$$

MTZ006-312100-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
510 AM MST THU JAN 31 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE
BITTERROOT MOUNTAINS. TOTAL SNOW AMOUNTS THROUGH THIS EVENING
WILL BE 7 TO 15 INCHES...WITH THE HEAVIEST AMOUNTS OVER LOLO PASS
AND LOST TRAIL PASS. ADDITIONALLY...GUSTY WINDS WILL OCCASIONALLY
PRODUCE AREAS OF BLOWING AND DRIFTING SNOW THROUGH THE MOUNTAIN
PASSES.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS.

$$

IDZ007-312100-
/O.CON.KMSO.WS.W.0005.000000T0000Z-080131T2200Z/
OROFINO/GRANGEVILLE REGION-
410 AM PST THU JAN 31 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON. 

A STRONG PACIFIC STORM WILL CONTINUE TO PRODUCE 25 TO 35 MPH WITH
GUSTS TO 50 MPH THIS AFTERNOON IN THE GRANGEVILLE AREA. THE
STRONG WINDS WILL PRODUCE NEAR WHITEOUT CONDITIONS AT TIMES DUE
TO WIDESPREAD BLOWING SNOW.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS STRONG WINDS AND
BLOWING SNOW ARE LIKELY. THIS WILL MAKE TRAVEL VERY HAZARDOUS.

$$

MTZ043-312100-
/O.CON.KMSO.SN.Y.0010.000000T0000Z-080201T0600Z/
POTOMAC/SEELEY LAKE REGION-
510 AM MST THU JAN 31 2008

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

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

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING MODERATE SNOW...
PLUS GUSTY WINDS AT TIMES TO THE POTOMAC AND SEELEY LAKE AREA.
TOTAL SNOW AMOUNTS THROUGH THIS EVENING WILL BE 4 TO 8 INCHES.

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.

$$
000 
WWUS45 KMSO 311331
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
631 AM MST THU JAN 31 2008

IDZ007-312100-
/O.CAN.KMSO.WS.W.0005.000000T0000Z-080131T2200Z/
/O.NEW.KMSO.BZ.W.0003.080131T1331Z-080131T2200Z/
OROFINO/GRANGEVILLE REGION-
531 AM PST THU JAN 31 2008

...BLIZZARD WARNING IN EFFECT UNTIL 2 PM PST THIS AFTERNOON...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT UNTIL 2 PM PST THIS AFTERNOON. THE
BLIZZARD WARNING UPGRADES THE WINTER STORM WARNING THAT WAS
PREVIOUSLY IN EFFECT.

A STRONG PACIFIC STORM WILL CONTINUE TO PRODUCE 25 TO 35 MPH WITH
GUSTS TO NEAR 60 MPH THROUGH THIS AFTERNOON ACROSS THE CAMAS
PRAIRIE. THE STRONG WINDS WILL PRODUCE WHITEOUT CONDITIONS DUE TO
WIDESPREAD BLOWING SNOW. ROADS IN SOME AREAS WILL BECOME
IMPASSABLE DUE TO SUBSTANTIAL DRIFTING.

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. BLOWING SNOW WITH STRONG WINDS AND POOR
VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. 
 
$$

IDZ010-312130-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
/O.CON.KMSO.BS.Y.0001.000000T0000Z-080201T0000Z/
EASTERN LEMHI COUNTY-
631 AM MST THU JAN 31 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING ABOVE 5000 FEET...
...BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

A HEAVY SNOW WARNING ABOVE 5000 FEET REMAINS IN EFFECT UNTIL
11 PM MST THIS EVENING. A BLOWING SNOW ADVISORY REMAINS IN EFFECT
UNTIL 5 PM MST THIS AFTERNOON. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE LOST
TRAIL PASS TRAVEL CORRIDOR. TOTAL SNOW AMOUNTS THROUGH THIS
EVENING WILL BE 10 TO 14 INCHES. THIS WARNING INCLUDES HIGHWAY
93 FROM ROUGHLY GIBBONSVILLE TO LOST TRAIL PASS AND ALSO
RECREATION AREAS NEAR MOCCASIN CREEK SOUTHWEST OF SALMON.

IN ADDITION...SOUTHERLY WINDS OF 20 TO 30 MPH SUSTAINED WITH
GUSTS TO AROUND 45 MPH WILL CREATE SIGNIFICANT BLOWING AND
DRIFTING SNOW IN THE VALLEY BOTTOMS...ESPECIALLY ALONG THE
HIGHWAY 28 CORRIDOR BETWEEN TENDOY AND LEADORE AND NEAR KRILEY
CREEK.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS. A BLOWING SNOW ADVISORY MEANS
THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING
SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS.

$$

IDZ005-006-312100-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
531 AM PST THU JAN 31 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY...

A HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE
SOUTHERN CLEARWATER MOUNTAINS. TOTAL SNOW AMOUNTS BY EARLY FRIDAY
MORNING WILL BE 8 TO 12 INCHES IN THE VALLEYS...AND UP TO
16 INCHES OVER THE HIGHER TERRAIN.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS.

$$

MTZ004-312100-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T1200Z/
LOWER CLARK FORK REGION-
631 AM MST THU JAN 31 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

A HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW. TOTAL SNOW AMOUNTS BY EARLY FRIDAY
MORNING WILL BE 12 TO 20 INCHES WITH THE HEAVIER AMOUNTS FALLING
OVER LOOKOUT PASS. IN ADDITION...GUSTY WINDS WILL OCCASIONALLY
PRODUCE AREAS OF BLOWING AND DRIFTING SNOW THROUGH MOUNTAIN
PASSES.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS.

$$

MTZ001-002-312100-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
KOOTENAI/CABINET REGION-WEST GLACIER REGION-
631 AM MST THU JAN 31 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE WEST
GLACIER REGION. TOTAL SNOW AMOUNTS THROUGH THIS EVENING WILL BE
8 TO 12 INCHES WITH THE HEAVIEST AMOUNTS OVER MARIAS PASS. THE
GUSTY WINDS WILL OCCASIONALLY PRODUCE AREAS OF BLOWING AND
DRIFTING SNOW THROUGH MOUNTAIN PASSES.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS.

$$

MTZ006-312100-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
631 AM MST THU JAN 31 2008

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING A PROLONGED PERIOD
OF MODERATE TO HEAVY SNOW...PLUS GUSTY WINDS AT TIMES TO THE
BITTERROOT MOUNTAINS. TOTAL SNOW AMOUNTS THROUGH THIS EVENING
WILL BE 7 TO 15 INCHES...WITH THE HEAVIEST AMOUNTS OVER LOLO PASS
AND LOST TRAIL PASS. ADDITIONALLY...GUSTY WINDS WILL OCCASIONALLY
PRODUCE AREAS OF BLOWING AND DRIFTING SNOW THROUGH THE MOUNTAIN
PASSES.

A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST
THAT WILL MAKE TRAVEL DANGEROUS.

$$

MTZ043-312100-
/O.CON.KMSO.SN.Y.0010.000000T0000Z-080201T0600Z/
POTOMAC/SEELEY LAKE REGION-
631 AM MST THU JAN 31 2008

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

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

A STRONG WEATHER SYSTEM WILL CONTINUE TO BRING MODERATE SNOW...
PLUS GUSTY WINDS AT TIMES TO THE POTOMAC AND SEELEY LAKE AREA.
TOTAL SNOW AMOUNTS THROUGH THIS EVENING WILL BE 4 TO 8 INCHES.

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.

$$

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 30, 7:44 AM PST, 5 hours 19 minutes earlier.

Area forecast discussion, Jan 30, 7:44 AM PST, 5 hours 19 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
844 AM MST WED JAN 30 2008

.DISCUSSION...A COLD TROUGH OF LOW PRESSURE WILL MOVE ACROSS
NORTHCENTRAL IDAHO AND WESTERN MONTANA TODAY. ALTHOUGH SHOWERS
HAVE BEEN FEW AND FAR BETWEEN THE PAST 6 HOURS...ADDITIONAL
DEVELOPMENT IS LIKELY TODAY AS DAY TIME HEATING COMBINES WITH THE
UNSTABLE ATMOSPHERE. FORECASTS GENERALLY ON TRACK.

&&

.AVIATION...A COLD AND UNSTABLE ATMOSPHERE WILL PERSIST ACROSS THE
REGION TODAY SUPPORTING SCATTERED CONVECTION. THE CONVECTION
SHOULD BE VIGOROUS ENOUGH TO SUPPORT VERY LOW CEILINGS AND
VISIBILITIES WITH THE CORE OF SHOWERS. ALTHOUGH VFR CONDITIONS
WILL OCCUR IN MANY AREAS TODAY...IT SHOULD BE NOTED THAT
CONDITIONS MAY CHANGE RAPIDLY AS SCATTERED CONVECTION MOVES ACROSS
THE AREA.

&&

.PREV DISCUSSION... /ISSUED 400 AM MST WED JAN 30 2008/

DISCUSSION...WEATHER PATTERN IS PROGRESSING PRETTY MUCH AS HAS
BEEN FORECASTED FOR PAST SEVERAL DAYS. NORTHERN ROCKIES WILL
REMAIN UNDER A MOIST UNSTABLE AIR MASS TODAY DUE TO THE PASSING
UPPER LEVEL TROUGH. SNOW SHOWERS WILL BE COMMON TODAY WITH LIGHT
ACCUMULATIONS LIKELY IN THE MOUNTAINS. ANOTHER UPPER TROUGH WILL
BEGIN TO IMPACT THE NORTHERN ROCKIES LATE WEDNESDAY NIGHT.
PLENTIFUL MOISTURE AND LIFT AHEAD OF THE TROUGH IS EXPECTED TO
PRODUCE MODERATE TO HEAVY SNOW ACCUMULATIONS THROUGH THURSDAY
EVENING. THE FOCUS WILL AGAIN BE OVER NORTHERN IDAHO...NORTHWEST
MONTANA...AND THE MOUNTAINS OF WEST CENTRAL MONTANA. THE MISSOULA
AND BITTERROOT VALLEYS...AS WELL AS MUCH OF THE UPPER CLARK FORK
VALLEY WILL BE TERRAIN SHADOWED THROUGH MUCH OF THE EVENT. THE
EXCEPTION TO THIS WILL BE A SHORT BURST OF SNOW THURSDAY EVENING
AS A COLD FRONT AHEAD OF THE MAIN TROUGH PASSES THE REGION.

THIS SYSTEM WILL BE ACCOMPANIED BY A STRONG WESTERLY
JET...AND THE RESULTING WINDS IN THE HIGHER ELEVATIONS COULD MAKE
TRAVEL ESPECIALLY HAZARDOUS OVER THE PASSES. WHILE THE WINDS ALOFT
ARE WESTERLY...THE WINDS IN THE LOWER ELEVATIONS WILL BE PUSHED
FROM THE SOUTH DUE TO A TIGHTENING PRESSURE GRADIENT AS THE COLD
FRONT APPROACHES. THIS WILL BE AN ESPECIALLY GOOD SETUP FOR
STRONG WINDS ON THE CAMAS PRAIRIE AND SOUTH TO NORTH CANYONS OF
WESTERN IDAHO COUNTY THURSDAY. HOWEVER...VALLEYS ELSEWHERE WITH
THIS ORIENTATION WILL ALSO BE BREEZY AT TIMES AHEAD OF THE FRONT
THURSDAY.

FRIDAY THROUGH TUESDAY...THE PROGRESSIVE PATTERN IS EXPECTED TO
CONTINUE DURING THIS PERIOD AS A SERIES OF PACIFIC DISTURBANCES
MOVE THROUGH THE NORTHERN ROCKIES REGION WITH THE FIRST MOVING
THROUGH LATE IN THE WEEKEND. THIS PATTERN SHOULD CONTINUE ADDING TO
THE MOUNTAIN SNOW PACK. TEMPERATURES WILL GRADUALLY COOL THIS
WEEKEND AS THE JET STREAM DIGS FATHER SOUTH...THUS CARVING OUT
COOLER UPPER TROUGHS OF LOW PRESSURE.

AVIATION...SNOW SHOWERS WILL BE COMMON TODAY IN AN UNSTABLE AND
MOIST AIR MASS. MORE WIDESPREAD SNOW WITH LOW CEILINGS AND
VISIBILITIES WILL DEVELOP FROM THE WEST AFTER MIDNIGHT AND
PERSIST THROUGH THURSDAY.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...WINTER STORM WATCH FROM LATE TONIGHT THROUGH THURSDAY EVENING
     FOR KOOTENAI/CABINET REGION-LOWER CLARK FORK REGION.

     WINTER STORM WATCH FROM LATE TONIGHT THROUGH THURSDAY EVENING
     FOR BITTERROOT/SAPPHIRE MOUNTAINS-WEST GLACIER REGION.

ID...WINTER STORM WATCH FROM LATE TONIGHT THROUGH THURSDAY EVENING
     FOR NORTHERN CLEARWATER MOUNTAINS.

     WINTER STORM WATCH FROM LATE TONIGHT THROUGH THURSDAY EVENING
     FOR SOUTHERN CLEARWATER MOUNTAINS.

&&

SHORT TERM...BAUCK
LONG TERM....WHITMORE
AVIATION...BAUCK
Hazardous weather outlook, Jan 30, 3:47 AM PST, 9 hours 16 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MISSOULA MT
447 AM MST WED JAN 30 2008

IDZ007-008-302100-
OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION-
347 AM PST WED JAN 30 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
IDAHO.

.DAY ONE...TODAY AND TONIGHT

A TIGHTENING PRESSURE GRADIENT AHEAD OF ANOTHER WEATHER SYSTEM HAS
THE POTENTIAL TO PRODUCE STRONG SOUTH WINDS ACROSS THE AREA LATE
TONIGHT. WIND GUSTS TO 45 MPH ARE POSSIBLE ON THE CAMAS PRAIRIE
AND IN THE LOWER HELLS AND SALMON RIVER CANYONS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THE WINDS ARE EXPECTED TO CONTINUE THROUGH THURSDAY...DIMINISHING
SOMEWHAT AFTER A COLD FRONT MOVES THROUGH IN THE LATE AFTERNOON.
SNOW JUST AHEAD OF AND WITH THE FRONT COULD COMBINE WITH THE WINDS
TO CAUSE BLOWING SNOW AND REDUCED VISIBILITIES.

.SPOTTER INFORMATION STATEMENT...

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

MTZ043-302100-
POTOMAC/SEELEY LAKE REGION-
447 AM MST WED JAN 30 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
MONTANA.

.DAY ONE...TODAY AND TONIGHT

SCATTERED SNOW SHOWERS WILL PERSIST THROUGH TONIGHT IN AN UNSTABLE
AIR MASS AHEAD OF THE NEXT WEATHER SYSTEM.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

ANOTHER WEATHER SYSTEM WILL ENTER THE NORTHERN ROCKIES THURSDAY
THROUGH THURSDAY EVENING BRINGING WITH IT THE POTENTIAL FOR
MODERATE TO HEAVY SNOW ACCUMULATIONS AS WELL AS GUSTY WINDS.

.SPOTTER INFORMATION STATEMENT...

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

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 30, 1:03 PM PSTHeavy Snow WarningMSOClearwater, Idaho, Lemhi38 hr
Jan 30, 1:10 PM PSTWind AdvisoryMSOIdaho, Lemhi27 hr

Nearby

Winter Storm Warnings in Idaho, 2008Every winter storm warning in 2008

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.