Alert archive / Montana / Winter Storm Watches in 2014
Winter Storm Watch 13, NWS Missoula, MT
NWS Missoula, MT issued this winter storm watch at Dec 26, 2014, 3:54 AM MST for 9 counties in Montana; Clearwater County, Idaho County, Idaho. It took effect at Dec 27, 2014, 11:00 AM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Dec 26, 2014, 3:54 AM MST (10:54 UTC)
- In effect from
- Dec 27, 2014, 11:00 AM MST
- Expired
- Dec 27, 2014, 3:39 AM MST
- In force
- Issued by
- NWS Missoula, MT
Counties Clearwater County, ID, Idaho County, ID, Flathead County, MT, Granite County, MT, Lake County, MT, Lincoln County, MT, Mineral County, MT, Missoula County, MT, Powell County, MT, Ravalli County, MT, Sanders County, MT
The radar
The Missoula radar (KMSX), 38 km from the middle of the area, began a volume at 10:52 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, 10.9 hours before the alert went out and 159 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
- 1221 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
894 WWUS45 KMSO 261054 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 354 AM MST FRI DEC 26 2014 MTZ001-004-262200- /O.NEW.KMSO.WS.A.0013.141227T1800Z-141228T1800Z/ KOOTENAI/CABINET REGION-LOWER CLARK FORK REGION- 354 AM MST FRI DEC 26 2014 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING. * IMPACTS/TIMING: SNOW WILL DEVELOP SATURDAY MORNING AND BECOME MODERATE TO HEAVY AT TIMES SATURDAY AFTERNOON INTO SUNDAY MORNING. A NARROW BAND OF VERY HEAVY SNOW MAY DEVELOP, WHICH WOULD BE CAPABLE OF PRODUCING SNOW RATES OF 1 TO 2 INCHES PER HOUR. TRAVEL MAY BECOME DIFFICULT DUE TO SLICK SNOW COVERED ROADS, PERIODS OF HEAVY SNOW, AND LOWERING VISIBILITY. * SNOW ACCUMULATIONS: 4 TO 8 INCHES IN THE VALLEYS, 8 TO 12 INCHES IN THE HIGHER TERRAIN AND OVER LOOKOUT PASS. AMOUNTS COULD BE LOCALLY HIGHER UNDER A NARROW BAND, THOUGH THE EXACT LOCATION OF THIS BAND IS STILL NOT CERTAIN. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 2 KALISPELL TO LIBBY... HIGHWAY 37 EUREKA TO LIBBY...HIGHWAY 56 BULL LAKE ROAD... HIGHWAY 93 EUREKA TO WHITEFISH...EVARO HILL...HIGHWAY 200 THOMPSON FALLS TO PLAINS...HIGHWAY 200 TROUT CREEK TO HERON... I-90 LOOKOUT PASS TO HAUGAN PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ MTZ002-003-262200- /O.NEW.KMSO.WS.A.0013.141227T1800Z-141229T1800Z/ WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- 354 AM MST FRI DEC 26 2014 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY MORNING THROUGH MONDAY MORNING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM SATURDAY MORNING THROUGH MONDAY MORNING. * IMPACTS/TIMING: MODERATE TO HEAVY SNOW IS EXPECTED TO DEVELOP MID DAY SATURDAY AND LAST THROUGH SUNDAY MORNING. BY SUNDAY AFTERNOON, GUSTY NORTHEAST WINDS WILL DEVELOP, WHICH COULD CAUSE AREAS OF LOW VISIBILITY IN BLOWING SNOW. TRAVEL COULD BECOME DIFFICULT DUE TO THE COMBINATION OF SLICK, SNOW COVERED ROADS AND NEAR WHITE OUT CONDITIONS. IN ADDITION, WIND CHILLS COULD BECOME DANGEROUSLY LOW BY MONDAY MORNING. * SNOW ACCUMULATIONS: 4 TO 8 INCHES POSSIBLE FOR THE VALLEYS, 8 TO 12 INCHES IN THE HIGHER TERRAIN AND OVER MARIAS PASS. * WINDS: NORTHEAST 20-30 MPH WITH GUSTS TO 45 MPH, ESPECIALLY OVER MARIAS PASS AND THROUGH BADROCK CANYON INTO THE NORTHERN FLATHEAD VALLEY. * WIND CHILLS: 10 TO 20 DEGREES BELOW ZERO BY MONDAY MORNING, ESPECIALLY OVER MARIAS PASS AND THROUGH BADROCK CANYON INTO THE NORTHERN FLATHEAD VALLEY. * LOCATIONS IMPACTED INCLUDE...BAD ROCK CANYON...ESSEX...HIGHWAY 83 BIGFORK TO SWAN LAKE...MARIAS PASS...POLEBRIDGE...FLATHEAD LAKE...FLATHEAD VALLEY...MISSION VALLEY...POLSON PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$
3 follow-up statements
742 WWUS45 KMSO 261523 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 823 AM MST FRI DEC 26 2014 ...A SIGNIFICANT SNOW PRODUCING SYSTEM STILL LOOKS LIKE IT WILL IMPACT WIDESPREAD AREAS IN WESTERN MONTANA AND NORTH CENTRAL IDAHO BEGINNING SATURDAY AFTERNOON... IDZ005-006-MTZ006-043-271200- /O.EXA.KMSO.WS.A.0013.141227T1800Z-141228T1800Z/ NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS- BITTERROOT/SAPPHIRE MOUNTAINS-POTOMAC/SEELEY LAKE REGION- 823 AM MST FRI DEC 26 2014 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING. * IMPACTS/TIMING: SNOW WILL DEVELOP SATURDAY MORNING AND BECOME MODERATE TO HEAVY AT TIMES SATURDAY AFTERNOON INTO SUNDAY MORNING. A NARROW BAND OF VERY HEAVY SNOW MAY DEVELOP... WHICH WOULD BE CAPABLE OF PRODUCING SNOW RATES OF 1 TO 2 INCHES PER HOUR. TRAVEL WILL BECOME DIFFICULT DUE TO SLICK SNOW COVERED ROADS... PERIODS OF HEAVY SNOW... AND LOWERING VISIBILITY. * SNOW ACCUMULATIONS: 4 TO 8 INCHES IN THE VALLEYS... 8 TO 12 INCHES IN THE HIGHER TERRAIN AND OVER LOOKOUT PASS. AMOUNTS COULD BE LOCALLY HIGHER UNDER A NARROW BAND... THOUGH THE EXACT LOCATION OF THIS BAND IS STILL NOT CERTAIN. * 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... HIGHWAY 200 BONNER TO GREENOUGH...HIGHWAY 83 SEELEY LAKE TO CONDON...I-90 EAST MISSOULA TO BEARMOUTH PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ MTZ001-004-271200- /O.CON.KMSO.WS.A.0013.141227T1800Z-141228T1800Z/ KOOTENAI/CABINET REGION-LOWER CLARK FORK REGION- 823 AM MST FRI DEC 26 2014 ...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... A WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING. * IMPACTS/TIMING: SNOW WILL DEVELOP SATURDAY MORNING AND BECOME MODERATE TO HEAVY AT TIMES SATURDAY AFTERNOON INTO SUNDAY MORNING. A NARROW BAND OF VERY HEAVY SNOW MAY DEVELOP... WHICH WOULD BE CAPABLE OF PRODUCING SNOW RATES OF 1 TO 2 INCHES PER HOUR. TRAVEL WILL BECOME DIFFICULT DUE TO SLICK SNOW COVERED ROADS... PERIODS OF HEAVY SNOW... AND LOWERING VISIBILITY. * SNOW ACCUMULATIONS: 4 TO 8 INCHES IN THE VALLEYS... 8 TO 12 INCHES IN THE HIGHER TERRAIN AND OVER LOOKOUT PASS. AMOUNTS COULD BE LOCALLY HIGHER UNDER A NARROW BAND... THOUGH THE EXACT LOCATION OF THIS BAND IS STILL NOT CERTAIN. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 2 KALISPELL TO LIBBY... HIGHWAY 37 EUREKA TO LIBBY...HIGHWAY 56 BULL LAKE ROAD... HIGHWAY 93 EUREKA TO WHITEFISH...EVARO HILL...HIGHWAY 200 THOMPSON FALLS TO PLAINS...HIGHWAY 200 TROUT CREEK TO HERON... I-90 LOOKOUT PASS TO HAUGAN PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ MTZ002-003-271200- /O.CON.KMSO.WS.A.0013.141227T1800Z-141229T1800Z/ WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- 823 AM MST FRI DEC 26 2014 ...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH MONDAY MORNING... A WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH MONDAY MORNING. * IMPACTS/TIMING: MODERATE TO HEAVY SNOW IS EXPECTED TO DEVELOP MID DAY SATURDAY AND LAST THROUGH SUNDAY MORNING. BY SUNDAY AFTERNOON... GUSTY NORTHEAST WINDS WILL DEVELOP... WHICH COULD CAUSE AREAS OF LOW VISIBILITY IN BLOWING SNOW. TRAVEL WILL BECOME DIFFICULT DUE TO THE COMBINATION OF SLICK SNOW COVERED ROADS AND NEAR WHITE OUT CONDITIONS. IN ADDITION... WIND CHILLS COULD BECOME DANGEROUSLY LOW BY MONDAY MORNING. * SNOW ACCUMULATIONS: 4 TO 8 INCHES POSSIBLE FOR THE VALLEYS... 8 TO 12 INCHES IN THE HIGHER TERRAIN AND OVER MARIAS PASS. * WINDS: NORTHEAST 20-30 MPH WITH GUSTS TO 45 MPH... ESPECIALLY OVER MARIAS PASS AND THROUGH BADROCK CANYON INTO THE NORTHERN FLATHEAD VALLEY. * WIND CHILLS: 10 TO 20 DEGREES BELOW ZERO BY MONDAY MORNING... ESPECIALLY OVER MARIAS PASS AND THROUGH BADROCK CANYON INTO THE NORTHERN FLATHEAD VALLEY. * LOCATIONS IMPACTED INCLUDE...BAD ROCK CANYON...ESSEX...HIGHWAY 83 BIGFORK TO SWAN LAKE...MARIAS PASS...POLEBRIDGE...FLATHEAD LAKE...FLATHEAD VALLEY...MISSION VALLEY...POLSON PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$
006 WWUS45 KMSO 262053 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 153 PM MST FRI DEC 26 2014 ...A SIGNIFICANT SNOW-PRODUCING SYSTEM STILL LOOKS LIKE IT WILL CAUSE WIDESPREAD IMPACTS TO AREAS IN WESTERN MONTANA AND NORTH CENTRAL IDAHO BEGINNING SATURDAY AFTERNOON... IDZ007>010-271200- /O.NEW.KMSO.WW.Y.0074.141227T1800Z-141228T1800Z/ OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION- WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY- 153 PM MST FRI DEC 26 2014 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM MST /10 AM PST/ SATURDAY TO 11 AM MST /10 AM PST/ SUNDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 11 AM MST /10 AM PST/ SATURDAY TO 11 AM MST /10 AM PST/ SUNDAY. * IMPACTS/TIMING: LIGHT SNOW WILL BEGIN TO DEVELOP SATURDAY AFTERNOON IN THE CAMAS PRAIRIE. MODERATE SNOW WITH BRIEF PERIODS OF HEAVY SNOW IS POSSIBLE SATURDAY NIGHT INTO SUNDAY MORNING. TRAVEL COULD BECOME HAZARDOUS SATURDAY NIGHT DUE TO SNOW COVERED ROADS. * SNOW ACCUMULATIONS: TOTAL ACCUMULATIONS OF 3 TO 6 INCHES FOR MOST VALLEYS IN THE CAMAS PRAIRIE. 2 TO 5 INCHES FOR VALLEYS IN LEMHI COUNTY. 6 TO 10 INCHES FOR LOST TRAIL PASS. * LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND VICINITY...GREER GRADE...HIGHWAY 95 SLATE CREEK TO RIGGINS... WHITE BIRD GRADE...SHOUP...BANNOCK PASS...HIGHWAY 28 TENDOY TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...LEMHI PASS...SALMON PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MTZ007-271200- /O.NEW.KMSO.WW.Y.0074.141228T0000Z-141228T1800Z/ BUTTE/BLACKFOOT REGION- 153 PM MST FRI DEC 26 2014 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM SATURDAY TO 11 AM MST SUNDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 5 PM SATURDAY TO 11 AM MST SUNDAY. * IMPACTS/TIMING: LIGHT SNOW WILL BEGIN TO DEVELOP IN THE REGION LATE AFTERNOON ON SATURDAY. MODERATE SNOW WITH A BRIEF PERIOD OF HEAVY SNOW IS POSSIBLE OVERNIGHT SATURDAY AND SUNDAY MORNING. ROADS WILL BECOME HAZARDOUS BY SUNDAY MORNING...ESPECIALLY OVER MACDONALD PASS. * SNOW ACCUMULATIONS: GENERALLY 3 TO 6 INCHES FOR MOST AREAS WITH LOCALIZED HIGHER AMOUNTS AROUND MACDONALD PASS. * LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 12 GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MTZ005-271200- /O.NEW.KMSO.WW.Y.0074.141227T1800Z-141228T1800Z/ MISSOULA/BITTERROOT VALLEYS- 153 PM MST FRI DEC 26 2014 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM SATURDAY TO 11 AM MST SUNDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 11 AM SATURDAY TO 11 AM MST SUNDAY. * IMPACTS/TIMING: LIGHT SNOW WILL BEGIN TO DEVELOP SATURDAY AFTERNOON. MODERATE SNOW WITH BRIEF PERIODS OF HEAVY SNOW IS POSSIBLE SATURDAY NIGHT INTO SUNDAY MORNING. TRAVEL COULD BECOME HAZARDOUS SATURDAY NIGHT DUE TO SNOW COVERED ROADS. * SNOW ACCUMULATIONS: GENERALLY 3 TO 6 INCHES ARE EXPECTED BY EARLY SUNDAY AFTERNOON. LOCALIZED HIGHER AMOUNTS ARE POSSIBLE IN AND AROUND MISSOULA. * LOCATIONS IMPACTED INCLUDE...BITTERROOT VALLEY...MISSOULA PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ005-006-MTZ001-004-006-043-271200- /O.CON.KMSO.WS.A.0013.141227T1800Z-141228T1800Z/ NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS- KOOTENAI/CABINET REGION-LOWER CLARK FORK REGION- BITTERROOT/SAPPHIRE MOUNTAINS-POTOMAC/SEELEY LAKE REGION- 153 PM MST FRI DEC 26 2014 ...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... A WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING. * IMPACTS/TIMING: SNOW WILL DEVELOP SATURDAY MORNING AND BECOME MODERATE TO HEAVY AT TIMES SATURDAY AFTERNOON INTO SUNDAY MORNING. SNOWFALL RATES OF 1 TO 2 INCHES PER HOUR MAY OCCUR AT TIMES. TRAVEL WILL BECOME DIFFICULT DUE TO SLICK SNOW COVERED ROADS...PERIODS OF HEAVY SNOW...AND REDUCED VISIBILITY. * SNOW ACCUMULATIONS: 4 TO 8 INCHES IN THE VALLEYS... 8 TO 12 INCHES IN THE HIGHER TERRAIN AND OVER LOOKOUT PASS. AMOUNTS COULD BE LOCALLY HIGHER. * LOCATIONS IMPACTED INCLUDE...ELK RIVER...HIGHWAY 11 PIERCE TO HEADQUARTERS...PIERCE...DIXIE...ELK CITY...HIGHWAY 12 LOWELL TO LOLO PASS...HIGHWAY 2 KALISPELL TO LIBBY...HIGHWAY 37 EUREKA TO LIBBY...HIGHWAY 56 BULL LAKE ROAD...HIGHWAY 93 EUREKA TO WHITEFISH...EVARO HILL...HIGHWAY 200 THOMPSON FALLS TO PLAINS... HIGHWAY 200 TROUT CREEK TO HERON...I-90 LOOKOUT PASS TO HAUGAN... HIGHWAY 93 SULA TO LOST TRAIL PASS...LOLO PASS...HIGHWAY 200 BONNER TO GREENOUGH...HIGHWAY 83 SEELEY LAKE TO CONDON...I- 90 EAST MISSOULA TO BEARMOUTH PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ MTZ002-003-271200- /O.CON.KMSO.WS.A.0013.141227T1800Z-141229T1800Z/ WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- 153 PM MST FRI DEC 26 2014 ...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH MONDAY MORNING... A WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH MONDAY MORNING. * IMPACTS/TIMING: MODERATE TO HEAVY SNOW IS EXPECTED TO DEVELOP MID DAY SATURDAY AND LAST THROUGH SUNDAY MORNING. BY SUNDAY AFTERNOON...GUSTY NORTHEAST WINDS WILL DEVELOP...WHICH COULD CAUSE AREAS OF LOW VISIBILITY IN BLOWING SNOW. TRAVEL WILL BECOME DIFFICULT DUE TO THE COMBINATION OF SLICK SNOW COVERED ROADS AND BLOWING SNOW. IN ADDITION... WIND CHILLS COULD BECOME DANGEROUSLY LOW BY MONDAY MORNING. * SNOW ACCUMULATIONS: 4 TO 8 INCHES POSSIBLE FOR THE VALLEYS... 8 TO 12 INCHES IN THE HIGHER TERRAIN AND OVER MARIAS PASS. * WINDS: NORTHEAST 20-30 MPH WITH GUSTS TO 45 MPH...ESPECIALLY OVER MARIAS PASS AND THROUGH BADROCK CANYON INTO THE NORTHERN FLATHEAD VALLEY. * WIND CHILLS: 10 TO 20 DEGREES BELOW ZERO BY MONDAY MORNING... ESPECIALLY OVER MARIAS PASS AND THROUGH BADROCK CANYON INTO THE NORTHERN FLATHEAD VALLEY. * LOCATIONS IMPACTED INCLUDE...BAD ROCK CANYON...ESSEX...HIGHWAY 83 BIGFORK TO SWAN LAKE...MARIAS PASS...POLEBRIDGE...FLATHEAD LAKE...FLATHEAD VALLEY...MISSION VALLEY...POLSON PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$
637 WWUS45 KMSO 271039 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 339 AM MST SAT DEC 27 2014 ...A SIGNIFICANT SNOW-PRODUCING SYSTEM WILL CAUSE WIDESPREAD IMPACTS TO AREAS IN WESTERN MONTANA AND NORTH CENTRAL IDAHO BEGINNING THIS AFTERNOON... MTZ004-272200- /O.UPG.KMSO.WS.A.0013.141227T1800Z-141228T1800Z/ /O.NEW.KMSO.WS.W.0021.141227T1800Z-141229T0600Z/ LOWER CLARK FORK REGION- 339 AM MST SAT DEC 27 2014 ...WINTER STORM WARNING IN EFFECT FROM 11 AM THIS MORNING TO 11 PM MST SUNDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WARNING FOR SIGNIFICANT TRAVEL IMPACTS FROM PERIODS OF HEAVY SNOW...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 11 PM MST SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * IMPACTS/TIMING: SNOW WILL DEVELOP THIS MORNING AND BECOME MODERATE TO HEAVY AT TIMES THIS AFTERNOON THROUGH SUNDAY MORNING. SNOWFALL RATES OF 1 TO 2 INCHES PER HOUR OR MORE MAY OCCUR AT TIMES. TRAVEL WILL BECOME DIFFICULT DUE TO SLICK SNOW COVERED ROADS...PERIODS OF HEAVY SNOW...AND REDUCED VISIBILITY. * SNOW ACCUMULATIONS: MOST OF THE SNOW WILL FALL THIS EVENING THROUGH SUNDAY MORNING BUT HIGH SNOWFALL RATES WILL AGAIN BE POSSIBLE SUNDAY AFTERNOON. 6 TO 9 INCHES IN THE VALLEYS... 10 TO 14 INCHES IN THE HIGHER TERRAIN AND OVER LOOKOUT PASS. AMOUNTS COULD BE LOCALLY HIGHER. * WIND CHILLS: NEGATIVE 5 TO NEGATIVE 20 SUNDAY NIGHT THROUGH MONDAY MORNING. * LOCATIONS IMPACTED INCLUDE...EVARO HILL...HIGHWAY 200 THOMPSON FALLS TO PLAINS...HIGHWAY 200 TROUT CREEK TO HERON...I-90 LOOKOUT PASS TO HAUGAN 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. && $$ MTZ002-003-272200- /O.UPG.KMSO.WS.A.0013.141227T1800Z-141229T1800Z/ /O.NEW.KMSO.WS.W.0021.141227T1800Z-141229T1800Z/ WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- 339 AM MST SAT DEC 27 2014 ...WINTER STORM WARNING IN EFFECT FROM 11 AM THIS MORNING TO 11 AM MST MONDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 11 AM MST MONDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * IMPACTS/TIMING: LIGHT SNOW THIS MORNING IS EXPECTED TO BECOME MODERATE TO HEAVY BY THIS AFTERNOON AND LAST THROUGH SUNDAY. BY SUNDAY AFTERNOON...GUSTY NORTHEAST WINDS WILL DEVELOP...WHICH WILL CAUSE AREAS OF LOW VISIBILITY IN BLOWING SNOW. TRAVEL WILL BECOME DIFFICULT DUE TO THE COMBINATION OF SLICK SNOW COVERED ROADS AND BLOWING SNOW. IN ADDITION... WIND CHILLS COULD BECOME DANGEROUSLY LOW BY MONDAY MORNING. * SNOW ACCUMULATIONS: 5 TO 8 INCHES FOR THE VALLEYS...9 TO 12 INCHES IN THE HIGHER TERRAIN AND OVER MARIAS PASS BY SUNDAY MORNING. * WINDS: NORTHEAST 20-30 MPH WITH GUSTS TO 45 MPH...ESPECIALLY OVER MARIAS PASS AND THROUGH BADROCK CANYON INTO THE NORTHERN FLATHEAD VALLEY. * WIND CHILLS: 15 TO 25 DEGREES BELOW ZERO BY MONDAY MORNING... ESPECIALLY OVER MARIAS PASS AND THROUGH BADROCK CANYON INTO THE NORTHERN FLATHEAD VALLEY. * LOCATIONS IMPACTED INCLUDE...BAD ROCK CANYON...ESSEX...HIGHWAY 83 BIGFORK TO SWAN LAKE...MARIAS PASS...POLEBRIDGE...FLATHEAD LAKE...FLATHEAD VALLEY...MISSION VALLEY...POLSON PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW IS EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ MTZ043-272200- /O.UPG.KMSO.WS.A.0013.141227T1800Z-141228T1800Z/ /O.NEW.KMSO.WS.W.0021.141227T1800Z-141229T1800Z/ POTOMAC/SEELEY LAKE REGION- 339 AM MST SAT DEC 27 2014 ...WINTER STORM WARNING IN EFFECT FROM 11 AM THIS MORNING TO 11 AM MST MONDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WARNING FOR SIGNIFICANT TRAVEL IMPACTS FROM PERIODS OF HEAVY SNOW FOLLOWED BY BLOWING SNOW...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 11 AM MST MONDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * IMPACTS/TIMING: SNOW WILL DEVELOP THIS MORNING AND BECOME MODERATE WITH RATES OF 1 TO 2 INCHES PER HOUR AT TIMES. TRAVEL WILL BECOME DIFFICULT DUE TO SLICK SNOW COVERED ROADS...PERIODS OF HEAVY SNOW...AND REDUCED VISIBILITY. * SNOW ACCUMULATIONS: 6 TO 10 INCHES IN THE VALLEYS... 8 TO 12 INCHES IN THE HIGHER TERRAIN. AMOUNTS COULD BE LOCALLY HIGHER. MOST OF THE SNOW WILL FALL THIS EVENING THROUGH SUNDAY MORNING BUT HIGH SNOWFALL RATES WILL AGAIN BE POSSIBLE SUNDAY AFTERNOON ALONG WITH GUSTY WINDS ALONG HIGHWAY 200 AND I-90. * WIND AND WIND CHILLS: EAST AND NORTHEAST WINDS 20 TO 30 MPH SUNDAY EVENING WIND CHILLS 10 TO 20 DEGREES BELOW ZERO MONDAY MORNING. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 200 BONNER TO GREENOUGH... HIGHWAY 83 SEELEY LAKE TO CONDON...I-90 EAST MISSOULA TO BEARMOUTH PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW IS EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ MTZ001-272200- /O.UPG.KMSO.WS.A.0013.141227T1800Z-141228T1800Z/ /O.NEW.KMSO.WS.W.0021.141227T1800Z-141229T0000Z/ KOOTENAI/CABINET REGION- 339 AM MST SAT DEC 27 2014 ...WINTER STORM WARNING IN EFFECT FROM 11 AM THIS MORNING TO 5 PM MST SUNDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WARNING FOR SIGNIFICANT TRAVEL IMPACTS FROM PERIODS OF HEAVY SNOW...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 5 PM MST SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * IMPACTS/TIMING: SNOW WILL DEVELOP THIS MORNING AND BECOME MODERATE TO HEAVY AT TIMES THIS AFTERNOON INTO SUNDAY MORNING. SNOWFALL RATES OF 1 TO 2 INCHES PER HOUR MAY OCCUR AT TIMES. TRAVEL WILL BECOME DIFFICULT DUE TO SLICK SNOW COVERED ROADS...PERIODS OF HEAVY SNOW...AND REDUCED VISIBILITY. * SNOW ACCUMULATIONS: 4 TO 8 INCHES IN THE VALLEYS... 8 TO 12 INCHES IN THE HIGHER TERRAIN. AMOUNTS COULD BE LOCALLY HIGHER. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 2 KALISPELL TO LIBBY... HIGHWAY 37 EUREKA TO LIBBY...HIGHWAY 56 BULL LAKE ROAD... HIGHWAY 93 EUREKA TO WHITEFISH PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ IDZ005-006-MTZ006-272200- /O.UPG.KMSO.WS.A.0013.141227T1800Z-141228T1800Z/ /O.NEW.KMSO.WS.W.0021.141227T1800Z-141229T0600Z/ NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS- BITTERROOT/SAPPHIRE MOUNTAINS- 339 AM MST SAT DEC 27 2014 ...WINTER STORM WARNING IN EFFECT FROM 11 AM MST /10 AM PST/ THIS MORNING TO 11 PM MST /10 PM PST/ SUNDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 11 AM MST /10 AM PST/ THIS MORNING TO 11 PM MST /10 PM PST/ SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * IMPACTS/TIMING: SNOW WILL DEVELOP THIS MORNING AND BECOME MODERATE TO HEAVY AT TIMES THIS AFTERNOON INTO SUNDAY MORNING. SNOWFALL RATES OF 1 TO 2 INCHES OR MORE PER HOUR MAY OCCUR AT TIMES. TRAVEL WILL BECOME DIFFICULT DUE TO SLICK SNOW COVERED ROADS...PERIODS OF HEAVY SNOW...AND REDUCED VISIBILITY. * SNOW ACCUMULATIONS: 4 TO 8 INCHES IN THE VALLEYS... 10 TO 15 INCHES IN THE HIGHER TERRAIN AND OVER LOLO AND LOST TRAIL PASSES. AMOUNTS COULD BE LOCALLY HIGHER. * 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 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. && $$ IDZ007-008-272200- /O.EXT.KMSO.WW.Y.0074.141227T1800Z-141229T0000Z/ OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION- 339 AM MST SAT DEC 27 2014 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 AM THIS MORNING TO 4 PM PST SUNDAY... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT FROM 10 AM THIS MORNING TO 4 PM PST SUNDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP THIS MORNING AND BECOME MODERATE WITH BRIEF PERIODS OF HEAVY SNOW TONIGHT INTO SUNDAY MORNING. TRAVEL COULD BECOME HAZARDOUS TONIGHT THROUGH SUNDAY DUE TO SNOW COVERED ROADS. * SNOW ACCUMULATIONS: 3 TO 6 INCHES FOR MOST VALLEYS IN THE CAMAS PRAIRIE THIS EVENING THROUGH SUNDAY MORNING WITH THE POTENTIAL FOR MODERATE SNOW TO REDEVELOP EARLY SUNDAY AFTERNOON. * LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND VICINITY...GREER GRADE...HIGHWAY 95 SLATE CREEK TO RIGGINS... WHITE BIRD GRADE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MTZ007-272200- /O.EXT.KMSO.WW.Y.0074.141228T0000Z-141229T1800Z/ BUTTE/BLACKFOOT REGION- 339 AM MST SAT DEC 27 2014 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST MONDAY... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST MONDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP LATE THIS AFTERNOON WITH MODERATE SNOW AND A BRIEF PERIOD OF HEAVY SNOW POSSIBLE SUNDAY MORNING. ROADS WILL BECOME HAZARDOUS BY SUNDAY MORNING... ESPECIALLY OVER MACDONALD PASS. GUSTY EAST WINDS WILL ALSO DEVELOP SUNDAY AFTERNOON THAT WILL BRING THE THREAT FOR BLOWING SNOW ON HIGHWAY 12 AND I-90 SUNDAY AFTERNOON. * SNOW ACCUMULATIONS: GENERALLY 3 TO 6 INCHES WITH 5 TO 9 INCHES IN GEORGETOWN LAKE AND OVER HOMESTAKE AND MACDONALD PASSES. * WIND AND WIND CHILLS: EAST AND NORTHEAST WINDS 20 TO 35 MPH SUNDAY AFTERNOON AND EVENING WIND CHILLS 15 TO 25 DEGREES BELOW ZERO MONDAY MORNING. * LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 12 GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MTZ005-272200- /O.EXT.KMSO.WW.Y.0074.141227T1800Z-141229T1800Z/ MISSOULA/BITTERROOT VALLEYS- 339 AM MST SAT DEC 27 2014 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 11 AM THIS MORNING TO 11 AM MST MONDAY... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT FROM 11 AM THIS MORNING TO 11 AM MST MONDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP TODAY WITH MODERATE SNOW BY LATE THIS EVENING. MODERATE WITH BRIEF PERIODS OF HEAVY SNOW ARE POSSIBLE OVERNIGHT AND THROUGH SUNDAY MORNING. TRAVEL COULD BECOME HAZARDOUS TONIGHT THROUGH SUNDAY MORNING DUE TO SNOW COVERED ROADS AND LOW VISIBILITIES. MODERATE SNOW WILL LIKELY REDEVELOP SUNDAY AFTERNOON ALONG WITH GUSTY NORTHEAST WINDS. LOW VISIBILITIES IN BLOWING SNOW ARE EXPECTED BY SUNDAY EVENING WITH COLD WIND CHILLS BY MONDAY MORNING. * SNOW ACCUMULATIONS: GENERALLY 3 TO 6 INCHES ARE EXPECTED BY EARLY SUNDAY AFTERNOON. LOCALIZED HIGHER AMOUNTS ARE POSSIBLE IN AND AROUND MISSOULA. * WIND AND WIND CHILLS: EAST AND NORTHEAST WINDS 20 TO 35 MPH SUNDAY EVENING WIND CHILLS 10 TO 15 DEGREES BELOW ZERO MONDAY MORNING. * LOCATIONS IMPACTED INCLUDE...BITTERROOT VALLEY...MISSOULA PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ009-010-272200- /O.EXT.KMSO.WW.Y.0074.141227T1800Z-141229T1800Z/ WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY- 339 AM MST SAT DEC 27 2014 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 11 AM THIS MORNING TO 11 AM MST MONDAY... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT FROM 11 AM THIS MORNING TO 11 AM MST MONDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP THIS AFTERNOON. SNOW WILL BECOME MODERATE WITH BRIEF PERIODS OF HEAVY SNOW TONIGHT INTO SUNDAY MORNING. TRAVEL COULD BECOME HAZARDOUS SATURDAY NIGHT DUE TO SNOW COVERED ROADS. BLOWING SNOW WILL DEVELOP OVER GILMORE SUMMIT SUNDAY WITH COLD WIND CHILLS. * SNOW ACCUMULATIONS: 2 TO 5 INCHES. * WIND CHILLS: 10 TO 15 DEGREES BELOW ZERO MONDAY MORNING. * LOCATIONS IMPACTED INCLUDE...SHOUP...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 MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
What forecasters said that day
The local office's own words before this winter storm watch 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 watch went out at Dec 25, 2:34 PM MST, 13 hours 20 minutes earlier.
Area forecast discussion, Dec 25, 2:34 PM MST, 13 hours 20 minutes before
Area Forecast Discussion National Weather Service Missoula MT 234 PM MST THU DEC 25 2014 .DISCUSSION...A mix of sun and clouds will persist across the region today, with light snow showers expected to develop again and linger through Friday. Little accumulation is expected, save for higher terrain, where the mountains could pick up a fresh inch or two come tomorrow. Conditions quiet down once again by late in the day Friday. The next big story will be the potential for another widespread snow event starting Saturday afternoon and evening, then continuing into Sunday afternoon. Models are in pretty good agreement with showing a significant snow producing system. The question that still remains is the track of the surface low that develops in eastern Washington. The track of this low will determine where the heaviest snowfall will occur. If the track keeps the low further north along the Canadian border, as the ECWMF shows, then northwestern Montana will see the heaviest snow, similar to Christmas Eve. If the GFS is correct, the low will track southeast through west- central Montana. In this case, the Missoula, Bitterroot, and Mission valleys will see significant snowfall accumulations. In either case, confidence is high for at least widespread light snow accumulations throughout western Montana and central Idaho. As of right now, the areas that stand the best chance for significant accumulations will be locations along the Montana and Idaho border, as well as Idaho and Clearwater counties in Idaho. This system could cause widespread travel difficulties with anyone heading back home after Christmas. Stay tuned to any forecast changes as we iron out the details. After the snow begins to diminish late Sunday, an arctic frontal system is expected to spill over the Continental Divide. Strong northeast winds will accompany the arctic front, producing hazardous travel due to blowing snow from freshly fallen snow. Bitterly cold wind chills will also become a factor. High temperatures will range in the single digits and teens, at best. Overnight low temperatures could reach values as low as 20 degrees below zero along the Continental Divide. Higher elevations will see warming temperatures mid to late next week, but with intense valley inversions persisting. && .AVIATION...A pesky stratus deck has been lingering around northwest Montana this afternoon and could last into tonight, helping to keep ceilings lowered at KGPI. Elsewhere, conditions should remain benign, save for some light snow showers redeveloping through Friday. These could periodically cause reductions to visibility and ceilings through 27/0000Z at all terminals. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...None. ID...None. &&
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 26, 1:53 PM MST | Winter Weather Advisory | MSO | Deer Lodge, Granite, Mineral, Missoula, Powell, Ravalli and 2 more | 69 hr |
Nearby
Winter Storm Watches in Montana, 2014Winter Storm Watches in Idaho, 2014Every winter storm watch in 2014
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.