Alert archive / Montana / Winter Storm Warnings in 2011
Winter Storm Warning 22, NWS Missoula, MT
NWS Missoula, MT issued this winter storm warning at Dec 29, 2011, 10:14 PM MST for Flathead County, Lake County, Montana. It took effect at Dec 30, 2011, 2:00 AM MST. It was in force for 26 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
- Dec 29, 2011, 10:14 PM MST (05:14 UTC)
- In effect from
- Dec 30, 2011, 2:00 AM MST
- Expired
- Dec 31, 2011, 3:32 AM MST
- In force
- 26 hr
- Issued by
- NWS Missoula, MT
Counties Flathead County, MT, Lake County, MT
The radar
The Missoula radar (KMSX), 104 km from the middle of the area, began a volume at 05:15 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 00:00Z, 5.2 hours before the alert went out and 177 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1176 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
955 WWUS45 KMSO 300514 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 1014 PM MST THU DEC 29 2011 MTZ002-301315- /O.UPG.KMSO.WW.Y.0077.111230T1500Z-111231T1800Z/ /O.NEW.KMSO.WS.W.0022.111230T0900Z-111231T1200Z/ WEST GLACIER REGION- 1014 PM MST THU DEC 29 2011 ...WINTER STORM WARNING IN EFFECT FROM 2 AM FRIDAY TO 5 AM MST SATURDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 2 AM FRIDAY TO 5 AM MST SATURDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. * IMPACTS/TIMING: SNOW WILL BEGIN EARLY FRIDAY...BECOMING MORE INTENSE THROUGHOUT THE DAY. THE HEAVY SNOW WILL ACCUMULATE ON ROADWAYS...RESULTING IN HAZARDOUS TRAVEL CONDITIONS THROUGHOUT THE REGION...INCLUDING TRAVEL ALONG US-2. IN ADDITION..GUSTY WINDS WILL COMBINE WITH WIND BY FRIDAY AFTERNOON RESULTING IN DRAMATIC REDUCTIONS IN VISIBILITY THROUGH SATURDAY MORNING. * SNOW ACCUMULATIONS: 8 TO 12 INCHES...LOCALLY UP TO 15 INCHES. * WIND: WEST 15 TO 25 MPH WITH GUSTS TO 40 MPH MAINLY FRIDAY AFTERNOON THROUGH SATURDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW 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 TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ MTZ003-301315- /O.EXB.KMSO.WW.Y.0077.111230T0900Z-111230T1900Z/ FLATHEAD/MISSION VALLEYS- 1014 PM MST THU DEC 29 2011 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 AM TO NOON MST FRIDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 2 AM TO NOON MST FRIDAY. * IMPACTS/TIMING: SNOW WILL BEGIN TO ACCUMULATE EARLY FRIDAY MORNING...AFFECTING THE MORNING COMMUTE WITH POTENTIALLY SLUSHY AND HAZARDOUS TRAVEL CONDITIONS. TEMPERATURES WILL BE SLOW TO WARM SO FURTHER SNOWFALL ACCUMULATIONS ARE EXPECTED EVEN AFTER SUNRISE. HOWEVER THE SNOW WILL LIKELY BECOME SLUSHY AND WETTER WHICH SHOULD YIELD LESSER TO FEW SIGNIFICANT IMPACTS BY THE AFTERNOON. * SNOW ACCUMULATIONS: 1 TO 3 INCHES OF TOTAL SNOWFALL WITH LOCAL AREAS NEAR WHITEFISH AND COLUMBIA FALLS RECEIVING UP TO 4 INCHES. * LOCATIONS IMPACTED INCLUDE...FLATHEAD LAKE...FLATHEAD VALLEY... MISSION VALLEY PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ MTZ001-301315- /O.EXB.KMSO.WW.Y.0077.111230T0900Z-111230T1900Z/ KOOTENAI/CABINET REGION- 1014 PM MST THU DEC 29 2011 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 AM TO NOON MST FRIDAY ABOVE 2500 FEET... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW ABOVE 2500 FEET...WHICH IS IN EFFECT FROM 2 AM TO NOON MST FRIDAY. * IMPACTS/TIMING: SNOW WILL BEGIN TO ACCUMULATE EARLY FRIDAY... BECOMING MORE OF A SLUSHY WET SNOW BY MID MORNING. ROADWAYS ABOVE 2500 FEET WILL BECOME PARTICULARLY SLICK AND POTENTIALLY HAZARDOUS. EUREKA WILL LIKELY SEE BETWEEN 1 TO 2 INCHES OF SNOW BUT LITTLE NO NO ACCUMULATION IS ANTICIPATED IN LIBBY. * SNOW ACCUMULATIONS: 1 TO 3 INCHES WITH LOCAL AREAS RECEIVING AROUND 5 INCHES. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 2 KALISPELL TO LIBBY... HIGHWAY 37 EUREKA TO LIBBY...HIGHWAY 93 EUREKA TO WHITEFISH...YAAK VALLEY-LIBBY DAM ROAD AND SOUTH FORK ROAD/PIPE CREEK ROAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ IDZ005-006-301315- /O.CON.KMSO.WW.Y.0077.111230T0900Z-111231T1200Z/ NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS- 914 PM PST THU DEC 29 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 AM FRIDAY TO 4 AM PST SATURDAY ABOVE 5000 FEET FOR...DIXIE AND LOLO PASS... A WINTER WEATHER ADVISORY ABOVE 5000 FEET REMAINS IN EFFECT FROM 1 AM FRIDAY TO 4 AM PST SATURDAY. * IMPACTS/TIMING: SNOW WILL BEGIN TONIGHT BUT WIND WILL LIKELY HOLD OFF UNTIL FRIDAY. SNOW LEVELS WILL INCREASE FRIDAY MORNING WITH A SHORT PERIOD OF MIXED PRECIPITATION POSSIBLE BEFORE SNOW LEVELS LOWER AGAIN FRIDAY AFTERNOON. * SNOW ACCUMULATIONS: 6 TO 10 INCHES FROM TONIGHT THROUGH SATURDAY MORNING. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH MAINLY FRIDAY AFTERNOON THROUGH SATURDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ IDZ010-MTZ006-301315- /O.CON.KMSO.WW.Y.0077.111230T0900Z-111231T1200Z/ EASTERN LEMHI COUNTY-BITTERROOT/SAPPHIRE MOUNTAINS- 1014 PM MST THU DEC 29 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 AM FRIDAY TO 5 AM MST SATURDAY FOR LOLO PASS AND LOST TRAIL PASS... A WINTER WEATHER ADVISORY FOR LOLO PASS AND LOST TRAIL PASS REMAINS IN EFFECT FROM 2 AM FRIDAY TO 5 AM MST SATURDAY. * IMPACTS/TIMING: SNOW WILL BEGIN TONIGHT AND WILL COMBINE WITH WIND FRIDAY MORNING. WIND WILL INCREASE THROUGH FRIDAY WITH BLOWING SNOW LIKELY FRIDAY NIGHT. * SNOW ACCUMULATIONS: 6 TO 10 INCHES FROM TONIGHT THROUGH SATURDAY MORNING. MOST OF THE ACCUMULATIONS OVER LOST TRAIL PASS WILL OCCUR FRIDAY NIGHT. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH MAINLY FRIDAY AFTERNOON THROUGH EARLY SATURDAY MORNING. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...HIGHWAY 93 SULA TO LOST TRAIL PASS...LOLO PASS PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ MTZ004-301315- /O.CON.KMSO.WW.Y.0077.111230T0900Z-111231T1200Z/ LOWER CLARK FORK REGION- 1014 PM MST THU DEC 29 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 AM FRIDAY TO 5 AM MST SATURDAY FOR I-90 LOOKOUT PASS TO HAUGAN... A WINTER WEATHER ADVISORY FOR I-90 LOOKOUT PASS TO HAUGAN REMAINS IN EFFECT FROM 2 AM FRIDAY TO 5 AM MST SATURDAY. * IMPACTS/TIMING: SNOW WILL BEGIN TONIGHT AND WILL CONTINUE THROUGH SATURDAY MORNING. A BRIEF PERIOD OF MIXED PRECIPITATION IS POSSIBLE FRIDAY MORNING BEFORE CHANGING BACK TO ALL SNOW FRIDAY AFTERNOON. * SNOW ACCUMULATIONS: 7 TO 10 INCHES BY SATURDAY MORNING. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH MAINLY FRIDAY AFTERNOON THROUGH SATURDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$
4 follow-up statements
289 WWUS45 KMSO 301144 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 444 AM MST FRI DEC 30 2011 MTZ002-301900- /O.CON.KMSO.WS.W.0022.000000T0000Z-111231T1200Z/ WEST GLACIER REGION- 444 AM MST FRI DEC 30 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY ABOVE 3500 FEET FOR THE HIGHWAY 2 CORRIDOR FROM ESSEX TO MARIAS PASS... A WINTER STORM WARNING ABOVE 3500 FEET REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY. * IMPACTS/TIMING: SNOW WILL BECOME MORE INTENSE THROUGHOUT THE DAY TODAY. HEAVY SNOW WILL ACCUMULATE ON THE HIGHWAY 2 CORRIDOR BETWEEN ESSEX AND MARIAS PASS...RESULTING IN HAZARDOUS TRAVEL CONDITIONS. IN ADDITION...GUSTY WINDS WILL COMBINE WITH SNOW BY THIS AFTERNOON RESULTING IN DRAMATIC REDUCTIONS IN VISIBILITY THROUGH SATURDAY MORNING. * SNOW ACCUMULATIONS: 8 TO 12 INCHES...LOCALLY UP TO 15 INCHES BY SATURDAY MORNING. ELEVATIONS BELOW 3500 FEET CAN EXPECT 4 TO 6 INCHES OF SNOW...INCLUDING WEST GLACIER. * WIND: WEST 15 TO 25 MPH WITH GUSTS TO 40 MPH MAINLY THIS AFTERNOON THROUGH SATURDAY MORNING...MAINLY ON MARIAS PASS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. && $$ MTZ001-301900- /O.CON.KMSO.WW.Y.0077.000000T0000Z-111230T1900Z/ KOOTENAI/CABINET REGION- 444 AM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY ABOVE 2500 FEET... A WINTER WEATHER ADVISORY ABOVE 2500 FEET REMAINS IN EFFECT UNTIL NOON MST TODAY. * IMPACTS/TIMING: SNOW WILL CONTINUE TO ACCUMULATE EARLY THIS MORNING...BECOMING MORE OF A SLUSHY WET SNOW BY MID MORNING. ROADWAYS ABOVE 2500 FEET WILL BECOME PARTICULARLY SLICK AND POTENTIALLY HAZARDOUS. * SNOW ACCUMULATIONS: 1 TO 3 INCHES WITH LOCAL AREAS RECEIVING AROUND 5 INCHES. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 2 KALISPELL TO LIBBY... HIGHWAY 37 EUREKA TO LIBBY...HIGHWAY 93 EUREKA TO WHITEFISH PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ005-006-301900- /O.CON.KMSO.WW.Y.0077.000000T0000Z-111231T1200Z/ NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS- 344 AM PST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY ABOVE 5000 FEET FOR...DIXIE AND LOLO PASS... A WINTER WEATHER ADVISORY ABOVE 5000 FEET REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY. * IMPACTS/TIMING: SNOW WILL CONTINUE THROUGH THE DAY TODAY WITH WIND INCREASING THIS MORNING. SNOW LEVELS WILL INCREASE THIS MORNING WITH A SHORT PERIOD OF MIXED PRECIPITATION POSSIBLE BEFORE SNOW LEVELS LOWER AGAIN THIS AFTERNOON. * SNOW ACCUMULATIONS: 6 TO 10 INCHES THROUGH SATURDAY MORNING. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH MAINLY THIS AFTERNOON THROUGH SATURDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ010-MTZ006-301900- /O.CON.KMSO.WW.Y.0077.000000T0000Z-111231T1200Z/ EASTERN LEMHI COUNTY-BITTERROOT/SAPPHIRE MOUNTAINS- 444 AM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY FOR LOLO PASS AND LOST TRAIL PASS... A WINTER WEATHER ADVISORY FOR LOLO PASS AND LOST TRAIL PASS REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY. * IMPACTS/TIMING: SNOW WILL CONTINUE THROUGH THE DAY TODAY AND WILL COMBINE WITH WIND THIS MORNING. WIND WILL INCREASE THROUGH THE DAY WITH BLOWING SNOW LIKELY TONIGHT...ESPECIALLY OVER LOST TRAIL PASS. * SNOW ACCUMULATIONS: 6 TO 10 INCHES THROUGH SATURDAY MORNING. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH MAINLY THIS AFTERNOON THROUGH EARLY SATURDAY MORNING OVER LOST TRAIL PASS. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...HIGHWAY 93 SULA TO LOST TRAIL PASS...LOLO PASS PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ MTZ003-301900- /O.CON.KMSO.WW.Y.0077.000000T0000Z-111230T1900Z/ FLATHEAD/MISSION VALLEYS- 444 AM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY FOR THE FLATHEAD VALLEY... A WINTER WEATHER ADVISORY FOR THE FLATHEAD VALLEY REMAINS IN EFFECT UNTIL NOON MST TODAY. * IMPACTS/TIMING: SNOW WILL CONTINUE TO ACCUMULATE EARLY THIS MORNING IN THE FLATHEAD VALLEY...AFFECTING THE MORNING COMMUTE WITH POTENTIALLY SLUSHY AND SLICK TRAVEL CONDITIONS. SNOW WILL LIKELY BECOME SLUSHY AND WETTER AS TEMPERATURES WARM WHICH SHOULD YIELD LESSER TO FEW SIGNIFICANT IMPACTS BY THE AFTERNOON. THE MISSION VALLEY WILL LARGELY SEE A RAIN SNOW MIX AND THUS ACCUMULATIONS ARE NOT EXPECTED. * SNOW ACCUMULATIONS: 1 TO 3 INCHES OF TOTAL SNOWFALL IN THE FLATHEAD VALLEY WITH LOCAL AREAS NEAR WHITEFISH AND COLUMBIA FALLS RECEIVING UP TO 4 INCHES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MTZ004-301900- /O.CON.KMSO.WW.Y.0077.000000T0000Z-111231T1200Z/ LOWER CLARK FORK REGION- 444 AM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY FOR I-90 LOOKOUT PASS TO HAUGAN... A WINTER WEATHER ADVISORY FOR I-90 LOOKOUT PASS TO HAUGAN REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY. * IMPACTS/TIMING: SNOW WILL CONTINUE THROUGH SATURDAY MORNING. A BRIEF PERIOD OF MIXED PRECIPITATION IS POSSIBLE THIS MORNING BEFORE CHANGING BACK TO ALL SNOW BY THIS AFTERNOON. * SNOW ACCUMULATIONS: 7 TO 10 INCHES BY SATURDAY MORNING. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH MAINLY THIS AFTERNOON THROUGH SATURDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$
890 WWUS45 KMSO 301713 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 1013 AM MST FRI DEC 30 2011 MTZ002-310600- /O.CON.KMSO.WS.W.0022.000000T0000Z-111231T1200Z/ WEST GLACIER REGION- 1013 AM MST FRI DEC 30 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY. * IMPACTS/TIMING: SNOW WILL BECOME MORE INTENSE THROUGHOUT THE DAY TODAY. HEAVY SNOW WILL ACCUMULATE ON THE HIGHWAY 2 CORRIDOR BETWEEN ESSEX AND MARIAS PASS...RESULTING IN HAZARDOUS TRAVEL CONDITIONS. IN ADDITION...GUSTY WINDS WILL COMBINE WITH SNOW BY THIS AFTERNOON RESULTING IN DRAMATIC REDUCTIONS IN VISIBILITY THROUGH SATURDAY MORNING. * SNOW ACCUMULATIONS: 8 TO 12 INCHES...LOCALLY UP TO 15 INCHES BY SATURDAY MORNING. ELEVATIONS BELOW 3500 FEET CAN EXPECT 4 TO 6 INCHES OF SNOW...INCLUDING WEST GLACIER. * WIND: WEST 15 TO 25 MPH WITH GUSTS TO 40 MPH MAINLY THIS AFTERNOON THROUGH SATURDAY MORNING...MAINLY ON MARIAS PASS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. && $$ IDZ007-008-310600- /O.EXB.KMSO.WW.Y.0077.111230T2200Z-111231T0600Z/ OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION- 913 AM PST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO 10 PM PST THIS EVENING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER WEATHER ADVISORY FOR RAIN TURNING TO SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 10 PM PST THIS EVENING. * IMPACTS/TIMING: RAIN WILL CHANGE TO SNOW THIS AFTERNOON AND WILL COMBINE WITH GUSTY WEST WINDS. THE COMBINATION OF FREEZING ROADWAYS WITH SNOW AND BLOWING SNOW WILL CREATE HAZARDOUS TRAVEL CONDITIONS FROM THIS AFTERNOON AND THROUGH THE EVENING. * SNOW ACCUMULATIONS: 1 TO 3 INCHES WITH HIGHER AMOUNTS EXPECTED OVER WHITE BIRD GRADE. * WIND: WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH MAINLY THIS AFTERNOON AND EVENING. * LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND VICINITY...GREER GRADE...HIGHWAY 95 SLATE CREEK TO RIGGINS... WHITE BIRD GRADE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ MTZ005-310600- /O.EXB.KMSO.WW.Y.0077.111230T2200Z-111231T0600Z/ MISSOULA/BITTERROOT VALLEYS- 1013 AM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO 11 PM MST THIS EVENING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER WEATHER ADVISORY FOR RAIN CHANGING TO SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 3 PM THIS AFTERNOON TO 11 PM MST THIS EVENING. * IMPACTS/TIMING: RAIN WILL CHANGE TO SNOW AND COMBINE WITH WIND THIS AFTERNOON. FREEZING ROADWAYS ALONG WITH SNOW AND BLOWING SNOW WILL CREATE HAZARDOUS TRAVEL CONDITIONS THIS AFTERNOON THROUGH THIS EVENING. * SNOW ACCUMULATIONS: 1 TO 3 INCHES. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH BEGINNING THIS AFTERNOON AND CONTINUING THROUGH SATURDAY. * LOCATIONS IMPACTED INCLUDE...BITTERROOT VALLEY...MISSOULA PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ MTZ007-043-310600- /O.EXB.KMSO.WW.Y.0077.111230T2200Z-111231T0600Z/ BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY LAKE REGION- 1013 AM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO 11 PM MST THIS EVENING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 3 PM THIS AFTERNOON TO 11 PM MST THIS EVENING. * IMPACTS/TIMING: SNOW WILL COMBINE WITH WIND THIS AFTERNOON TO CREATE HAZARDOUS TRAVEL CONDITIONS. * SNOW ACCUMULATIONS: 2 TO 4 INCHES WITH HIGHER AMOUNTS POSSIBLE AT GEORGETOWN LAKE. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH THIS AFTERNOON AND TONIGHT. * LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 12 GARRISON TO ELLISTON...MACDONALD PASS...HIGHWAY 200 BONNER TO GREENOUGH...HIGHWAY 83 SEELEY LAKE TO CONDON...I-90 EAST MISSOULA TO BEARMOUTH PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ IDZ009-310600- /O.EXA.KMSO.WW.Y.0077.000000T0000Z-111231T1200Z/ WESTERN LEMHI COUNTY- 1013 AM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SATURDAY FOR...SHOUP... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT UNTIL 5 AM MST SATURDAY. * IMPACTS/TIMING: SNOW WILL COMBINE WITH WIND THIS AFTERNOON TO CREATE HAZARDOUS TRAVEL CONDITIONS. * SNOW ACCUMULATIONS: 1 TO 3 INCHES. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH THIS AFTERNOON AND TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ MTZ001-310600- /O.EXT.KMSO.WW.Y.0077.000000T0000Z-111231T0600Z/ KOOTENAI/CABINET REGION- 1013 AM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 11 PM MST THIS EVENING. * IMPACTS/TIMING: SNOW WILL CONTINUE TO ACCUMULATE THROUGH THE DAY. THERE WILL BE A PERIOD LATE THIS MORNING WHERE THE PRECIPITATION WILL BE SLUSHY WET SNOW OR EVEN RAIN. HAZARDOUS TRAVEL CONDITIONS WILL CONTINUE INTO THIS EVENING. * TOTAL SNOW ACCUMULATIONS: 3 TO 5 INCHES WITH LOCAL AREAS RECEIVING AROUND 6 INCHES. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 2 KALISPELL TO LIBBY... HIGHWAY 37 EUREKA TO LIBBY...HIGHWAY 56 BULL LAKE ROAD... HIGHWAY 93 EUREKA TO WHITEFISH PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MTZ003-310600- /O.EXT.KMSO.WW.Y.0077.000000T0000Z-111231T0600Z/ FLATHEAD/MISSION VALLEYS- 1013 AM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 11 PM MST THIS EVENING. * IMPACTS/TIMING: RAIN WILL CHANGE TO SNOW THIS AFTERNOON AND COMBINE WITH WIND. FREEZING ROADWAYS ALONG WITH SNOW AND BLOWING SNOW WILL CREATE HAZARDOUS TRAVEL CONDITIONS INTO THIS EVENING. * SNOW ACCUMULATIONS: 1 TO 3 INCHES. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH MAINLY THIS AFTERNOON THROUGH SATURDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ005-006-MTZ006-310600- /O.CON.KMSO.WW.Y.0077.000000T0000Z-111231T1200Z/ NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS- BITTERROOT/SAPPHIRE MOUNTAINS- 1013 AM MST FRI DEC 30 2011 /913 AM PST FRI DEC 30 2011/ ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST /4 AM PST/ SATURDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST /4 AM PST/ SATURDAY. * IMPACTS/TIMING: SNOW WILL CONTINUE THROUGH THE DAY TODAY AND WILL COMBINE WITH WIND THIS MORNING AT LOLO PASS. LOWER ELEVATIONS WILL SEE RAIN CHANGING OVER TO SNOW THIS AFTERNOON. WIND WILL INCREASE THROUGH THE DAY WITH BLOWING SNOW LIKELY THIS EVENING AT ALL ELEVATIONS. * SNOW ACCUMULATIONS: 6 TO 10 INCHES THROUGH SATURDAY MORNING FOR LOLO PASS AND DIXIE. 1 TO 3 INCHES BELOW 4000 FEET FROM THIS AFTERNOON THROUGH SATURDAY MORNING. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH THIS AFTERNOON THROUGH SATURDAY MORNING. * LOCATIONS IMPACTED INCLUDE...ELK RIVER...HIGHWAY 11 PIERCE TO HEADQUARTERS...PIERCE...DIXIE...ELK CITY...HIGHWAY 12 LOWELL TO LOLO PASS...HIGHWAY 93 SULA TO LOST TRAIL PASS...LOLO PASS PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ IDZ010-310600- /O.CON.KMSO.WW.Y.0077.000000T0000Z-111231T1200Z/ EASTERN LEMHI COUNTY- 1013 AM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY. * IMPACTS/TIMING: SNOW WILL CONTINUE THROUGH THE DAY TODAY AND WILL COMBINE WITH WIND THIS MORNING FOR LOST TRAIL PASS. AT LOWER ELEVATIONS RAIN WILL TRANSITION TO SNOW THIS AFTERNOON. WIND WILL INCREASE THIS AFTERNOON AT ALL ELEVATIONS WITH BLOWING SNOW LIKELY THIS EVENING...ESPECIALLY OVER LOST TRAIL PASS AND GILMORE SUMMIT. * SNOW ACCUMULATIONS: 6 TO 10 INCHES THROUGH SATURDAY MORNING FOR LOST TRAIL PASS. 1 TO 3 INCHES FOR ELEVATIONS BELOW 5000 FEET. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH THIS AFTERNOON THROUGH EARLY SATURDAY MORNING. * 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 WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ MTZ004-310600- /O.CON.KMSO.WW.Y.0077.000000T0000Z-111231T1200Z/ LOWER CLARK FORK REGION- 1013 AM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY. * IMPACTS/TIMING: SNOW WILL CONTINUE THROUGH SATURDAY MORNING OVER LOOKOUT PASS. LOWER ELEVATIONS WILL TRANSITION FROM RAIN TO SNOW BY AFTERNOON. FREEZING ROADWAYS WITH SNOW AND BLOWING SNOW AT ALL ELEVATIONS WILL CREATE HAZARDOUS DRIVING CONDITIONS THROUGH TONIGHT. * SNOW ACCUMULATIONS: 7 TO 10 INCHES BY SATURDAY MORNING FOR LOOKOUT PASS. 2 TO 4 INCHES FOR ELEVATIONS BELOW 4000 FEET. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH THIS AFTERNOON THROUGH SATURDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$
625 WWUS45 KMSO 310440 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 940 PM MST FRI DEC 30 2011 IDZ007-008-MTZ001-003-310545- /O.CAN.KMSO.WW.Y.0077.000000T0000Z-111231T0600Z/ OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION- KOOTENAI/CABINET REGION-FLATHEAD/MISSION VALLEYS- 940 PM MST FRI DEC 30 2011 /840 PM PST FRI DEC 30 2011/ ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER WEATHER ADVISORY. PRECIPITATION HAS MOSTLY ENDED ACROSS THE AREA. ICE WILL FORM ON SIDEWALKS AND ROADWAYS THAT ARE WET FROM TODAYS RAIN AND SNOW. $$ MTZ002-311200- /O.CON.KMSO.WS.W.0022.000000T0000Z-111231T1200Z/ WEST GLACIER REGION- 940 PM MST FRI DEC 30 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY. * IMPACTS/TIMING: SNOW WILL ACCUMULATE ON THE HIGHWAY 2 CORRIDOR BETWEEN ESSEX AND MARIAS PASS...RESULTING IN HAZARDOUS TRAVEL CONDITIONS. IN ADDITION...GUSTY WINDS WILL COMBINE WITH SNOW BY THIS AFTERNOON RESULTING IN DRAMATIC REDUCTIONS IN VISIBILITY THROUGH SATURDAY MORNING. * SNOW ACCUMULATIONS: 8 TO 12 INCHES...LOCALLY UP TO 15 INCHES BY SATURDAY MORNING. ELEVATIONS BELOW 3500 FEET CAN EXPECT 2 TO 4 INCHES OF SNOW...INCLUDING WEST GLACIER. * WIND: WEST 15 TO 25 MPH WITH GUSTS TO 40 MPH THROUGH SATURDAY MORNING...MAINLY ON MARIAS PASS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. && $$ MTZ005-311200- /O.EXT.KMSO.WW.Y.0077.000000T0000Z-111231T1500Z/ MISSOULA/BITTERROOT VALLEYS- 940 PM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 8 AM MST SATURDAY... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 8 AM MST SATURDAY. * IMPACTS/TIMING: FREEZING ROADWAYS ALONG WITH SNOW WILL CREATE HAZARDOUS TRAVEL CONDITIONS THROUGH SATURDAY MORNING. * SNOW ACCUMULATIONS: 1 TO 3 INCHES. * WIND: SOUTHWEST TO WEST 10 TO 20 MPH WITH GUSTS TO 25 MPH THROUGH SATURDAY. * LOCATIONS IMPACTED INCLUDE...BITTERROOT VALLEY...MISSOULA PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ MTZ007-043-311200- /O.EXT.KMSO.WW.Y.0077.000000T0000Z-111231T1500Z/ BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY LAKE REGION- 940 PM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 8 AM MST SATURDAY... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 8 AM MST SATURDAY. * IMPACTS/TIMING: SNOW WILL COMBINE WITH WIND TO CREATE HAZARDOUS TRAVEL CONDITIONS THROUGH SATURDAY MORNING. * SNOW ACCUMULATIONS: 2 TO 4 INCHES WITH HIGHER AMOUNTS POSSIBLE AT GEORGETOWN LAKE. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH. * LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 12 GARRISON TO ELLISTON...MACDONALD PASS...HIGHWAY 200 BONNER TO GREENOUGH...HIGHWAY 83 SEELEY LAKE TO CONDON...I-90 EAST MISSOULA TO BEARMOUTH PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ IDZ005-006-MTZ006-311200- /O.EXT.KMSO.WW.Y.0077.000000T0000Z-111231T1500Z/ NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS- BITTERROOT/SAPPHIRE MOUNTAINS- 940 PM MST FRI DEC 30 2011 /840 PM PST FRI DEC 30 2011/ ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 8 AM MST /7 AM PST/ SATURDAY... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 8 AM MST /7 AM PST/ SATURDAY. * IMPACTS/TIMING: SNOW WILL CONTINUE THROUGH TONIGHT AND WILL COMBINE WITH WIND AT LOLO PASS. * SNOW ACCUMULATIONS: 6 TO 10 INCHES THROUGH SATURDAY MORNING FOR LOLO PASS AND DIXIE. 1 TO 3 INCHES BELOW 4000 FEET THROUGH SATURDAY MORNING. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH THROUGH SATURDAY MORNING. * LOCATIONS IMPACTED INCLUDE...ELK RIVER...HIGHWAY 11 PIERCE TO HEADQUARTERS...PIERCE...DIXIE...ELK CITY...HIGHWAY 12 LOWELL TO LOLO PASS...HIGHWAY 93 SULA TO LOST TRAIL PASS...LOLO PASS PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ IDZ009-010-311200- /O.EXT.KMSO.WW.Y.0077.000000T0000Z-111231T1500Z/ WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY- 940 PM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 8 AM MST SATURDAY... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 8 AM MST SATURDAY. * IMPACTS/TIMING: SNOW WILL COMBINE WITH WIND TO CREATE HAZARDOUS TRAVEL CONDITIONS THROUGH SATURDAY MORNING. * SNOW ACCUMULATIONS: 1 TO 3 INCHES. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ MTZ004-311200- /O.EXT.KMSO.WW.Y.0077.000000T0000Z-111231T1500Z/ LOWER CLARK FORK REGION- 940 PM MST FRI DEC 30 2011 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 8 AM MST SATURDAY... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 8 AM MST SATURDAY. * IMPACTS/TIMING: SNOW WILL CONTINUE THROUGH SATURDAY MORNING OVER LOOKOUT PASS. FREEZING ROADWAYS WITH SNOW AND BLOWING SNOW AT ALL ELEVATIONS WILL CREATE HAZARDOUS DRIVING CONDITIONS THROUGH SATURDAY MORNING. * SNOW ACCUMULATIONS: 2 TO 4 INCHES BY SATURDAY MORNING FOR LOOKOUT PASS. 1 TO 2 INCHES FOR ELEVATIONS BELOW 4000 FEET. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH THROUGH SATURDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$
974 WWUS45 KMSO 311032 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 332 AM MST SAT DEC 31 2011 MTZ002-311145- /O.CAN.KMSO.WS.W.0022.000000T0000Z-111231T1200Z/ WEST GLACIER REGION- 332 AM MST SAT DEC 31 2011 ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER STORM WARNING. HEAVY SNOW HAS ENDED ACROSS THE REGION THIS MORNING. ROADS WILL REMAIN SLICK THROUGH THE MORNING. $$ MTZ005-311500- /O.CON.KMSO.WW.Y.0077.000000T0000Z-111231T1500Z/ MISSOULA/BITTERROOT VALLEYS- 332 AM MST SAT DEC 31 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST THIS MORNING. * IMPACTS/TIMING: ROADS WILL BE SLICK THIS MORNING DUE TO ICE FORMING ON ROADWAYS COMBINED WITH LIGHT SNOW ACCUMULATIONS ON TOP. ROAD CONDITIONS ARE EXPECTED TO IMPROVE LATE THIS MORNING AS TEMPERATURES WARM ABOVE FREEZING. * SNOW ACCUMULATIONS: LOCALLY UP TO AN INCH. * LOCATIONS IMPACTED INCLUDE...BITTERROOT VALLEY...MISSOULA PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MTZ007-043-311500- /O.CON.KMSO.WW.Y.0077.000000T0000Z-111231T1500Z/ BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY LAKE REGION- 332 AM MST SAT DEC 31 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST THIS MORNING. * IMPACTS/TIMING: LIGHT SNOW WILL COMBINE WITH WIND TO CREATE LOCAL AREAS OF LOW VISIBILITY THROUGH THIS MORNING. IN ADDITION...ROADS WILL BE SLICK DUE TO ICE FORMING ON ROADWAYS COMBINED WITH LIGHT SNOW ACCUMULATIONS ON TOP. ROAD CONDITIONS ARE EXPECTED TO IMPROVE LATE THIS MORNING AS TEMPERATURES WARM ABOVE FREEZING. * SNOW ACCUMULATIONS: LOCALLY UP TO AN INCH OF ADDITIONAL ACCUMULATION. * WIND: WEST 15 TO 20 MPH WITH GUSTS TO 30 MPH. * LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 12 GARRISON TO ELLISTON...MACDONALD PASS...HIGHWAY 200 BONNER TO GREENOUGH...HIGHWAY 83 SEELEY LAKE TO CONDON...I-90 EAST MISSOULA TO BEARMOUTH PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ IDZ005-006-MTZ006-311500- /O.CON.KMSO.WW.Y.0077.000000T0000Z-111231T1500Z/ NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS- BITTERROOT/SAPPHIRE MOUNTAINS- 332 AM MST SAT DEC 31 2011 /232 AM PST SAT DEC 31 2011/ ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST /7 AM PST/ THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST /7 AM PST/ THIS MORNING. * IMPACTS/TIMING: LIGHT SNOW WILL CONTINUE THROUGH EARLY THIS MORNING...ESPECIALLY OVER LOLO PASS AND LOST TRAIL PASS. IN ADDITION...ROADS WILL BE SLICK DUE TO ICE FORMING ON ROADWAYS COMBINED WITH LIGHT SNOW ACCUMULATIONS ON TOP. ROAD CONDITIONS ARE EXPECTED TO IMPROVE LATE THIS MORNING AS TEMPERATURES WARM ABOVE FREEZING. * SNOW ACCUMULATIONS: AN ADDITIONAL 1 TO 3 INCHES THROUGH THIS MORNING...MAINLY OVER LOLO AND LOST TRAIL PASS. * LOCATIONS IMPACTED INCLUDE...ELK RIVER...HIGHWAY 11 PIERCE TO HEADQUARTERS...PIERCE...DIXIE...ELK CITY...HIGHWAY 12 LOWELL TO LOLO PASS...HIGHWAY 93 SULA TO LOST TRAIL PASS...LOLO PASS PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ009-010-311500- /O.CON.KMSO.WW.Y.0077.000000T0000Z-111231T1500Z/ WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY- 332 AM MST SAT DEC 31 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST THIS MORNING. * IMPACTS/TIMING: LIGHT SNOW WILL COMBINE WITH WIND TO CREATE HAZARDOUS TRAVEL CONDITIONS THROUGH THIS MORNING. IN ADDITION...ROADS WILL BE SLICK DUE TO ICE FORMING ON ROADWAYS COMBINED WITH LIGHT SNOW ACCUMULATIONS ON TOP. ROAD CONDITIONS ARE EXPECTED TO IMPROVE LATE THIS MORNING AS TEMPERATURES WARM ABOVE FREEZING. * SNOW ACCUMULATIONS: AN ADDITIONAL 1 TO 3 INCHES...MAINLY OVER LOST TRAIL PASS. * WIND: SOUTHWEST TO WEST 15 TO 25 MPH WITH GUSTS TO 35 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS. && $$ MTZ004-311500- /O.CON.KMSO.WW.Y.0077.000000T0000Z-111231T1500Z/ LOWER CLARK FORK REGION- 332 AM MST SAT DEC 31 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST THIS MORNING. * IMPACTS/TIMING: LIGHT SNOW WILL CONTINUE THROUGH THIS MORNING OVER LOOKOUT PASS AND EVARO HILL. IN ADDITION...ROADS WILL BE SLICK DUE TO ICE FORMING ON ROADWAYS COMBINED WITH LIGHT SNOW ACCUMULATIONS ON TOP. ROAD CONDITIONS ARE EXPECTED TO IMPROVE LATE THIS MORNING AS TEMPERATURES WARM ABOVE FREEZING. * SNOW ACCUMULATIONS: 1 TO 2 INCHES...MAINLY OVER LOOKOUT PASS AND EVARO HILL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY 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 Dec 29, 2:47 PM MST, 7 hours 27 minutes earlier.
Area forecast discussion, Dec 29, 2:47 PM MST, 7 hours 27 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
247 PM MST THU DEC 29 2011
...ANOTHER ROUND OF WINDS...TRAVEL IMPACTS TO MOUNTAIN PASSES AND
VALLEY RAIN CHANGING TO SNOW LATE TONIGHT THROUGH EARLY SATURDAY...
.DISCUSSION...CLOUD/PRECIPITATION BREAKS ACROSS NORTH CENTRAL IDAHO AND
WESTERN MONTANA THIS AFTERNOON/EVENING WILL BE SHORT LIVED AS YET
ANOTHER MOIST PACIFIC WEATHER SYSTEM MOVES INTO THE REGION LATE
TONIGHT THROUGH SATURDAY.
THE NEXT WEATHER SYSTEM HAS ARRIVED TO THE WEST COAST AND
CONFIDENCE IS HIGH THAT THIS SYSTEM WILL AGAIN HAVE WELL ABOVE
AVERAGE MOISTURE. MODEL GUIDANCE AGREE THAT MOUNTAIN SNOW WILL
BEGIN TONIGHT. MUCH LIKE THE SYSTEM THAT JUST PASSED...THIS SYSTEM
WILL BRING IN A WARMER AND MORE MOIST AIRMASS BY FRIDAY MORNING.
SNOW LEVELS WILL RISE AS THIS OCCURS AND MOUNTAIN PASSES THAT ARE
NEAR 5000 FEET HAVE THE POSSIBILITY FOR SNOW MIXED WITH RAIN FOR A
PERIOD OF TIME FRIDAY MORNING BEFORE COOLER AIR ARRIVES DURING THE
AFTERNOON. WIND WILL ALSO INCREASE THROUGH THE DAY ON
FRIDAY...FIRST IN THE HIGH TERRAIN...THAT WILL CAUSE SNOW AND
BLOWING SNOW THROUGH SATURDAY MORNING. THIS WILL BE ESPECIALLY
TRUE WHEN THE FRONT PASSES...WHICH MODELS AGREE WILL BE FROM
FRIDAY AFTERNOON THROUGH FRIDAY EVENING. GUSTY WIND WILL BE
POSSIBLE AT ALL ELEVATIONS AS THE FRONT PASSES AND COOLER AIR WILL
FOLLOW. THE ATMOSPHERE WILL BECOME QUITE UNSTABLE AFTER THE FRONT
PASSES WHICH WILL LEAD TO WIDESPREAD SNOW SHOWERS. CONFIDENCE IS
HIGH THE SNOW SHOWERS WILL OCCUR AT ALL ELEVATIONS BUT SNOW
AMOUNTS IN THE VALLEYS ARE NOT IN AGREEMENT WITH THE MODELS AT THIS
TIME. SNOW WILL DECREASE SATURDAY EVENING AS A RIDGE BUILDS IN.
SUNDAY WILL BE UNDER A RIDGE FOR A COLD DAY WITH CLEAR SKIES AND FRESH
SNOW FROM SATURDAYS SYSTEM. MODELS ARE BEGINNING TO COME INTO
BETTER AGREEMENT THAT THE RIDGE WILL NOT BE AS STRONG AS
PREVIOUSLY FORECASTED. THE FIRST IN A SERIES OF WEATHER SYSTEM
WILL FLATTEN THE RIDGE MONDAY WITH A FLAT RIDGE/PROGRESSIVE WEST FLOW
MAINTAINING DOMINANCE THROUGH THE WEEK. MAJORITY OF
ENERGY/MOISTURE LOOKS TO IMPACT THE CLEARWATER MOUNTAINS AND WEST
CENTRAL/NORTHWEST MONTANA WITH TEMPERATURES MODERATING TO AND
ABOVE AVERAGE THROUGH THE WEEK.
&&
.AVIATION...AIRFIELDS WILL CONTINUE TO EXPERIENCE BREEZY WINDS
THROUGH EARLY EVENING...BUT WILL DECREASE AFTER SUNSET AS MORE
STABLE CONDITIONS MOVE INTO THE REGION. A WARM FRONT AHEAD OF THE
NEXT PACIFIC SYSTEM WILL SPREAD LOWERING CLOUDS AND PRECIPITATION
FROM WEST TO EAST ACROSS NORTH CENTRAL IDAHO AND WESTERN MONTANA
AFTER MIDNIGHT. TERRAIN OBSCURATIONS WILL ONCE AGAIN BECOME AN
ISSUE AND WINDS WILL INCREASE AGAIN OVER LEMHI COUNTY AND
SOUTHWEST MONTANA BY EARLY FRIDAY MORNING. KBTM AND KSMN WILL BE
IMPACTED WITH WINDS AFTER 30/09Z. MAIN PRECIPITATION TYPE IN THE
VALLEYS WILL BE RAIN THROUGH EARLY AFTERNOON...WITH KGPI BEING THE
EXCEPTION WITH A RAIN SNOW MIX.
&&
.MSO WATCHES/WARNINGS/ADVISORIES...
MT...WINTER WEATHER ADVISORY FROM 2 AM FRIDAY TO 5 AM MST SATURDAY
FOR I-90 LOOKOUT PASS TO HAUGAN.
WINTER WEATHER ADVISORY FROM 8 AM FRIDAY TO 11 AM MST SATURDAY
FOR MARIAS PASS.
WINTER WEATHER ADVISORY FROM 2 AM FRIDAY TO 5 AM MST SATURDAY
FOR LOLO PASS AND LOST TRAIL PASS.
ID...WINTER WEATHER ADVISORY FROM 1 AM FRIDAY TO 4 AM PST SATURDAY
ABOVE 5000 FEET FOR THE NORTHERN CLEARWATER MOUNTAINS...
SOUTHERN CLEARWATER MOUNTAINS.
WINTER WEATHER ADVISORY FROM 2 AM FRIDAY TO 5 AM MST SATURDAY
FOR LOLO PASS AND LOST TRAIL PASS.
&&
SHORT TERM...KITSMILLER
LONG TERM....MEAD
AVIATION...MEADNearby
Winter Storm Warnings in Montana, 2011Every winter storm warning in 2011
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.