Alert archive / Idaho / Blizzard Warnings in 2008

Blizzard Warning 3, NWS Missoula, MT

January 31, 2008Clearwater County, Idaho County, Idaho

NWS Missoula, MT issued this blizzard warning at Jan 31, 2008, 5:31 AM PST for Clearwater County, Idaho County, Idaho. It was in force for 8 hr. 5 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jan 31, 2008, 5:31 AM PST (13:31 UTC)
Expired
Jan 31, 2008, 2:00 PM PST
In force
8 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 13:31 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.

What was reported inside it

TimeReportWhereRemark
Jan 31, 5:44 AM PSTBLIZZARDGrangeville, IDWHITEOUT CONDITIONS REPORTED ON CAMAS PRAIRIE. NUMEROUS ROAD CLOSURES REPORTED INCLUDING IDAHO HIGHWAY 13. WIND GUST TO 59 MPH RECORDED AT GRANGEVILLE COUNTY AIRPORT 554 AM PST.
Jan 31, 7:59 AM PSTBLIZZARDGrangeville, IDGRANGEVILLE PUBLIC WORKS REPORTS BLIZZARD CONDITIONS IN GRANGEVILLE AND ACROSS THE CAMAS PRAIRIE TO COTTONWOOD. CARS AND VEHICLES REPORTED STUCK IN GRANGEVILLE AND ACROSS THE CAMAS PRAIRIE. EMERGENCY TRAVEL OR NO TRAVEL ADVISED ACROSS THE CAMAS PRAIRE DUE TO B
Jan 31, 9:00 AM PSTHEAVY SNOW 7Pierce, ID15 HOUR SNOWFALL TOTAL. POWER WAS OUT FROM 430 AM TO 745 AM PST.
Jan 31, 9:00 AM PSTHEAVY SNOW 12Elk River, ID24 HOUR SNOWFALL TOTAL.
Jan 31, 9:13 AM PSTHEAVY SNOW 62 Nw Peck, IDHAS FALLEN AT 2500 FT ELEVATION...3 INCHES HAVE BEEN REPORTED NEARBY AT 900 FT AND 1500 FT ELEVATIONS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 1.5 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 2008-01-31Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 12:00Z on 2008-01-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 407 square meters per square second.1939587897117136156Sfc1 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
520 m above ground
0-6 km bulk shear
94 kt
0-1 km storm-relative helicity
407 m²/s²
0-3 km storm-relative helicity
409 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 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.

$$
4 follow-up statements
000 
WWUS45 KMSO 311334
WSWMSO

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

IDZ007-312100-
/O.CON.KMSO.BZ.W.0003.000000T0000Z-080131T2200Z/
OROFINO/GRANGEVILLE REGION-
534 AM PST THU JAN 31 2008

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

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

A STRONG PACIFIC STORM WILL CONTINUE TO PRODUCE WINDS OF 25 TO 35
MPH WITH GUSTS TO NEAR 50 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.

$$

IDZ010-312100-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
/O.CON.KMSO.BS.Y.0001.000000T0000Z-080201T0000Z/
EASTERN LEMHI COUNTY-
634 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-
534 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-
634 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-
634 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-
634 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-
634 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 311614
WSWMSO

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

IDZ007-312200-
/O.CON.KMSO.BZ.W.0003.000000T0000Z-080131T2200Z/
OROFINO/GRANGEVILLE REGION-
814 AM PST THU JAN 31 2008

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

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

A STRONG PACIFIC STORM WILL CONTINUE TO PRODUCE WINDS OF 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. MOST ROADS ARE CURRENTLY
IMPASSABLE WITH ANY TRAVEL STRONGLY DISCOURGARED IN THIS AREA. TRAVEL
NOT RECOMMENDED. THIS IS A LIFE THREATENING SITUATION.

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.

$$

IDZ010-010015-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
/O.CON.KMSO.BS.Y.0001.000000T0000Z-080201T0000Z/
EASTERN LEMHI COUNTY-
914 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.

$$

IDZ005-006-010015-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
814 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.

$$

MTZ004-010015-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T1200Z/
LOWER CLARK FORK REGION-
914 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.

$$

MTZ001-002-010015-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
KOOTENAI/CABINET REGION-WEST GLACIER REGION-
914 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.

$$

MTZ006-010015-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
914 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.

$$

MTZ005-010015-
/O.NEW.KMSO.SB.Y.0008.080131T1614Z-080201T0400Z/
MISSOULA/BITTERROOT VALLEYS-
914 AM MST THU JAN 31 2008

...SNOW AND BLOWING SNOW ADVISORY IN EFFECT UNTIL 9 PM MST THIS
EVENING FOR THE BITTERROOT VALLEY...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SNOW AND
BLOWING SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 9 PM MST THIS
EVENING. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO PERIODS OF SNOW THROUGH
THIS EVENING IN THE BITTERROOT VALLEY. GUSTY SOUTH WINDS WILL
RESULT IN BLOWING AND DRIFTING OF SNOW THROUGH MID AFTERNOON. EVEN
THOUGH THE WINDS WILL DECREASE THIS AFTERNOON...LOCALLY HEAVY SNOW
SHOWERS ARE POSSIBLE THROUGH THIS EVENING. TOTAL SNOW
ACCUMULATIONS OF 3 TO 5 INCHES ARE POSSIBLE. 

IN THE MISSOULA VALLEY OCCASSIONAL LIGHT SNOW OR FLURRIES WILL
CONTINUE THROUGH EARLY AFTERNOON. AFTER 2 PM THROUGH THIS EVENING
LOCALLY HEAVY SNOW SHOWERS COULD DEVELOP PRODUCING 1 TO 3 INCHES
OF SNOW.

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

$$

MTZ043-010015-
/O.CON.KMSO.SN.Y.0010.000000T0000Z-080201T0600Z/
POTOMAC/SEELEY LAKE REGION-
914 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 311846
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1146 AM MST THU JAN 31 2008

MTZ001-010300-
/O.CAN.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
/O.EXB.KMSO.SN.Y.0010.000000T0000Z-080201T1300Z/
KOOTENAI/CABINET REGION-
1146 AM MST THU JAN 31 2008

...SNOW ADVISORY IN EFFECT UNTIL 6 AM MST FRIDAY...
...HEAVY SNOW WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SNOW
ADVISORY...WHICH IS IN EFFECT UNTIL 6 AM MST FRIDAY. THE HEAVY
SNOW WARNING HAS BEEN CANCELLED. 

A STRONG WINTER WEATHER SYSTEM WILL CONTINUE TO IMPACT NORTHWEST
MONTANA THROUGH TONIGHT. THE HEAVIEST SNOWFALL PERIOD IS
OVER...YET ADDITIONAL PERIODS OF SNOW THROUGH TONIGHT ARE EXPECTED
TO PRODUCE AN ADDITIONAL 2 TO 5 INCHES OF SNOW WITH LOCALLY
HEAVIER AMOUNTS.

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.

$$

IDZ007-312200-
/O.CON.KMSO.BZ.W.0003.000000T0000Z-080131T2200Z/
OROFINO/GRANGEVILLE REGION-
1046 AM PST THU JAN 31 2008

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

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

A STRONG PACIFIC STORM WILL CONTINUE TO PRODUCE WINDS OF 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. MOST ROADS ARE
CURRENTLY IMPASSABLE WITH ANY TRAVEL STRONGLY DISCOURGARED IN
THIS AREA. TRAVEL NOT RECOMMENDED. THIS IS A LIFE THREATENING
SITUATION.

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.

$$

IDZ010-010300-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
/O.CON.KMSO.BS.Y.0001.000000T0000Z-080201T0000Z/
EASTERN LEMHI COUNTY-
1146 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.

$$

IDZ005-006-010300-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
1046 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.

$$

MTZ004-010300-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T1200Z/
LOWER CLARK FORK REGION-
1146 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.

$$

MTZ002-010300-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
WEST GLACIER REGION-
1146 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.

$$

MTZ006-010300-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
1146 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.

$$

MTZ005-010300-
/O.CON.KMSO.SB.Y.0008.000000T0000Z-080201T0400Z/
MISSOULA/BITTERROOT VALLEYS-
1146 AM MST THU JAN 31 2008

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 9 PM
MST THIS EVENING...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 9 PM MST
THIS EVENING. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO PERIODS OF SNOW THROUGH
THIS EVENING IN THE BITTERROOT VALLEY. GUSTY SOUTH WINDS WILL
RESULT IN BLOWING AND DRIFTING OF SNOW THROUGH MID AFTERNOON.
EVEN THOUGH THE WINDS WILL DECREASE THIS AFTERNOON...LOCALLY
HEAVY SNOW SHOWERS ARE POSSIBLE THROUGH THIS EVENING. TOTAL SNOW
ACCUMULATIONS OF 3 TO 5 INCHES ARE POSSIBLE.

IN THE MISSOULA VALLEY OCCASSIONAL LIGHT SNOW OR FLURRIES WILL
CONTINUE THROUGH EARLY AFTERNOON. AFTER 2 PM THROUGH THIS EVENING
LOCALLY HEAVY SNOW SHOWERS COULD DEVELOP PRODUCING 1 TO 3 INCHES
OF SNOW.

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

$$

MTZ043-010300-
/O.CON.KMSO.SN.Y.0010.000000T0000Z-080201T0600Z/
POTOMAC/SEELEY LAKE REGION-
1146 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 312200
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
300 PM MST THU JAN 31 2008

IDZ007-010600-
/O.CAN.KMSO.BZ.W.0003.000000T0000Z-080131T2200Z/
/O.NEW.KMSO.WS.W.0006.080131T2200Z-080201T0600Z/
OROFINO/GRANGEVILLE REGION-
200 PM PST THU JAN 31 2008

...WINTER STORM WARNING IN EFFECT UNTIL 10 PM PST THIS EVENING...
...BLIZZARD WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT UNTIL 10 PM PST THIS EVENING.
THE BLIZZARD WARNING HAS BEEN CANCELLED. 

A STRONG PACIFIC STORM WILL CONTINUE TO PRODUCE AREAS OF MODERATE
TO HEAVY SNOW ALONG THE HIGHWAY 12 CORRIDOR WITH 6 TO 12 INCHES OF
SNOW POSSIBLE. ON THE CAMAS PRAIRIE WINDS OF 25 TO 35 MPH WITH
GUSTS TO NEAR 60 MPH WILL CONTINUE TO PRODUCE AREAS OF WHITEOUT
CONDITIONS DUE TO WIDESPREAD BLOWING SNOW. THE WINDS WILL DIMINISH
THIS EVENING...BUT BREEZY WINDS WILL CONTINUE TO PRODUCE AREAS OF
BLOWING AND DRIFTING SNOW THROUGH MIDNIGHT AS NEW SNOWFALL OF 2 TO
4 INCHES FALLS. MANY ROADS ARE CURRENTLY IMPASSABLE WITH ANY
TRAVEL STRONGLY DISCOURGARED IN THIS AREA.

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

$$

MTZ005-010600-
/O.NEW.KMSO.WS.W.0006.080131T2200Z-080201T0600Z/
/O.EXT.KMSO.SB.Y.0008.000000T0000Z-080201T0600Z/
MISSOULA/BITTERROOT VALLEYS-
300 PM MST THU JAN 31 2008

...WINTER STORM WARNING IN EFFECT UNTIL 11 PM MST THIS EVENING 
FOR THE BITTERROOT VALLEY...
...SNOW AND BLOWING SNOW ADVISORY NOW IN EFFECT UNTIL 11 PM MST
THIS EVENING FOR THE MISSOULA VALLEY...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT UNTIL 11 PM MST THIS EVENING
FOR THE BITTERROOT VALLEY. THE SNOW AND BLOWING SNOW ADVISORY IS
NOW IN EFFECT UNTIL 11 PM MST THIS EVENING FOR THE MISSOULA VALEY.

A STRONG WEATHER SYSTEM WILL CONTINUE TO PERIODS OF SNOW THROUGH
THIS EVENING. GUSTY SOUTH WINDS WILL RESULT IN BLOWING AND
DRIFTING OF SNOW THROUGH LATE AFTERNOON. EVEN THOUGH THE WINDS
WILL DECREASE THIS LATE AFTERNOON...PERIODS OF MODERATE TO LOCALLY
HEAVY ARE POSSIBLE THROUGH MID EVENING. TOTAL SNOW ACCUMULATIONS
OF 4 TO 8 INCHES ARE POSSIBLE IN THE BITTERROOT VALLEY WITH 2 TO 4
INCHES IN THE MISSOULA VALLEY.

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

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

$$

MTZ043-010600-
/O.UPG.KMSO.SN.Y.0010.000000T0000Z-080201T0600Z/
/O.EXA.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
POTOMAC/SEELEY LAKE REGION-
300 PM MST THU JAN 31 2008

...HEAVY SNOW WARNING IN EFFECT UNTIL 11 PM MST THIS EVENING...
...SNOW ADVISORY NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A HEAVY SNOW
WARNING...WHICH IS IN EFFECT UNTIL 11 PM MST THIS EVENING. THE
SNOW ADVISORY IS NO LONGER IN EFFECT. 

A STRONG WEATHER SYSTEM WILL CONTINUE TO PERIODS OF SNOW THROUGH
MID EVENING. THE AREA EXPECTED TO BE MOST IMPACTED BY THIS EVENT
IS THE HIGHWAY 200 CORIDOR FROM BONNER TO CLEARWATER JUNCTION AND
THE INTERSTATE 90 CORRIDOR FROM EAST MISSOULA TO CLINTON. TOTAL
SNOW ACCUMULATIONS OF 4 TO 8 INCHES ARE POSSIBLE IN THESE AREAS.
IN OTHER AREAS SUCH AS SEELEY LAKE 3 TO 5 INCHES OF SNOW ARE
POSSIBLE.

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.

$$

IDZ010-010600-
/O.EXT.KMSO.BS.Y.0001.000000T0000Z-080201T0600Z/
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
EASTERN LEMHI COUNTY-
300 PM MST THU JAN 31 2008

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

THE BLOWING SNOW ADVISORY IS NOW IN EFFECT UNTIL 11 PM MST THIS
EVENING. 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 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.

$$

IDZ005-006-010600-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
200 PM 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.

$$

MTZ004-010600-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T1200Z/
LOWER CLARK FORK REGION-
300 PM 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.

$$

MTZ002-010600-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
WEST GLACIER REGION-
300 PM 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.

$$

MTZ006-010600-
/O.CON.KMSO.HS.W.0005.000000T0000Z-080201T0600Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
300 PM 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 12 TO 24 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.

$$

MTZ001-010600-
/O.CON.KMSO.SN.Y.0010.000000T0000Z-080201T1300Z/
KOOTENAI/CABINET REGION-
300 PM MST THU JAN 31 2008

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST FRIDAY...

A SNOW ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST FRIDAY. 

A STRONG WINTER WEATHER SYSTEM WILL CONTINUE TO IMPACT NORTHWEST
MONTANA THROUGH TONIGHT. THE HEAVIEST SNOWFALL PERIOD IS OVER...
YET ADDITIONAL PERIODS OF SNOW THROUGH TONIGHT ARE EXPECTED TO
PRODUCE AN ADDITIONAL 2 TO 5 INCHES OF SNOW WITH LOCALLY HEAVIER
AMOUNTS.

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.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 31, 2:58 AM PSTBlowing Snow AdvisoryMSOLemhi19 hr
Jan 31, 2:00 PM PSTWinter Storm WarningMSOClearwater, Idaho3 hr

Nearby

Blizzard Warnings in Idaho, 2008Every blizzard 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.