Alert archive / Montana / Winter Storm Warnings in 2013
Winter Storm Warning 8, NWS Missoula, MT
NWS Missoula, MT issued this winter storm warning at Dec 18, 2013, 10:24 AM MST for Flathead County, Lake County, Montana. It took effect at Dec 18, 2013, 2:00 PM MST. It was in force for 15 hr. 1 report 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
- Dec 18, 2013, 10:24 AM MST (17:24 UTC)
- In effect from
- Dec 18, 2013, 2:00 PM MST
- Expired
- Dec 19, 2013, 4:41 AM MST
- In force
- 15 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 17:21 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 18, 7:19 PM MST | SNOW 1.5 | Columbia Falls, MT | 1.5 IN AN HOUR AND A HALF SNOW DURATION 1 HOUR |
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, 5.4 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
- 835 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 157 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS45 KMSO 181724 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 1024 AM MST WED DEC 18 2013 MTZ002-190600- /O.UPG.KMSO.WS.A.0008.131218T2100Z-131219T1800Z/ /O.NEW.KMSO.WS.W.0008.131218T2100Z-131219T1200Z/ WEST GLACIER REGION- 1024 AM MST WED DEC 18 2013 ...WINTER STORM WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 5 AM MST THURSDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WARNING FOR SNOW, BLOWING SNOW AND ICY ROADS...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 5 AM MST THURSDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * IMPACTS/TIMING: SNOW WILL BECOME HEAVY AT TIMES BY THIS AFTERNOON LIMITING VISIBILITIES AND CREATING SLICK CONDITIONS. AN ARCTIC COLD FRONT WILL THEN MOVE THROUGH MARIAS PASS BY LATE THIS AFTERNOON AND THROUGH BAD ROCK CANYON BY THIS EVENING WHICH WILL QUICKLY DROP TEMPERATURES CAUSING FLASH FREEZING OF SURFACES. IT WILL ALSO BRING STRONG GUSTY NORTHEAST WINDS CAUSING BLOWING SNOW, VERY LOW VISIBILITIES AND SUB-ZERO WIND CHILLS. TRAVEL WILL BECOME VERY DIFFICULT, ESPECIALLY OVER MARIAS PASS THROUGH THURSDAY MORNING. * SNOW ACCUMULATIONS: 5 TO 8 INCHES. * WINDS: NORTHEAST 20 TO 30 MPH WITH GUSTS UP TO 45 MPH. * LOCATIONS IMPACTED INCLUDE...BAD ROCK CANYON...ESSEX...HIGHWAY 83 BIGFORK TO SWAN LAKE...MARIAS PASS...POLEBRIDGE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... BLOWING SNOW...OR ICE ACCUMULATIONS ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ MTZ001-004-190600- /O.CON.KMSO.WW.Y.0051.131218T1800Z-131219T1200Z/ KOOTENAI/CABINET REGION-LOWER CLARK FORK REGION- 1024 AM MST WED DEC 18 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP TODAY AND LAST THROUGH THE EVENING. ACCUMULATING SNOW WILL CAUSE AREAS OF SLICK ROADS... ESPECIALLY OVER LOOKOUT PASS AND THE HIGHWAY 2 CORRIDOR BETWEEN LIBBY AND MARION. * SNOW ACCUMULATIONS: 3 TO 6 INCHES OVER THE MOUNTAIN PASSES SUCH AS LOOKOUT PASS. 1 TO 4 INCHES IN THE LOWER ELEVATIONS... LOCALLY UP TO 5 INCHES. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 2 KALISPELL TO LIBBY... HIGHWAY 37 EUREKA TO LIBBY...HIGHWAY 56 BULL LAKE ROAD... HIGHWAY 93 EUREKA TO WHITEFISH...EVARO HILL...HIGHWAY 200 THOMPSON FALLS TO PLAINS...HIGHWAY 200 TROUT CREEK TO HERON... I-90 LOOKOUT PASS TO HAUGAN PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ005-006-MTZ006-190600- /O.CON.KMSO.WW.Y.0051.131218T1800Z-131219T1800Z/ NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS- BITTERROOT/SAPPHIRE MOUNTAINS- 1024 AM MST WED DEC 18 2013 /924 AM PST WED DEC 18 2013/ ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST /10 AM PST/ THURSDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST /10 AM PST/ THURSDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP TODAY AND BECOME MODERATE AT TIMES THROUGH WEDNESDAY NIGHT. ACCUMULATING SNOW WILL CAUSE AREAS OF SLICK SNOW COVERED ROADS... ESPECIALLY OVER LOLO AND LOST TRAIL PASSES. * SNOW ACCUMULATIONS: 3 TO 6 INCHES OVER THE MOUNTAIN PASSES. 1 TO 3 INCHES IN LOCATIONS ABOVE 2000 FEET. UP TO AN INCH FOR LOCATIONS BELOW 2000 FEET. * 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 SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ007-008-190600- /O.CON.KMSO.WW.Y.0051.131218T1800Z-131219T1800Z/ OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION- 924 AM PST WED DEC 18 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP TODAY AND BECOME MODERATE AT TIMES THROUGH WEDNESDAY NIGHT. ACCUMULATING SNOW WILL CAUSE AREAS OF SLICK ROADS... ESPECIALLY ON THE CAMAS PRAIRIE AND OVER WHITEBIRD GRADE. * SNOW ACCUMULATIONS: 1 TO 4 INCHES ON THE CAMAS PRAIRIE... GRANGEVILLE... WHITE BIRD GRADE AND GREER GRADE. 1 TO 2 INCHES OF SNOW ELSEWHERE. * LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND VICINITY...GREER GRADE...HIGHWAY 95 SLATE CREEK TO RIGGINS... WHITE BIRD GRADE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MTZ007-043-190600- /O.CON.KMSO.WW.Y.0051.131219T0000Z-131219T1800Z/ BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY LAKE REGION- 1024 AM MST WED DEC 18 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST THURSDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST THURSDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP LATE THIS AFTERNOON AND BECOME MODERATE AT TIMES THROUGH THURSDAY MORNING. ACCUMULATING SNOW WILL CAUSE AREAS OF SLICK ROADS. IN ADDITION... BLOWING SNOW IS POSSIBLE LATE WEDNESDAY NIGHT INTO THURSDAY MORNING ALONG THE HIGHWAY 200... HIGHWAY 12 AND I- 90 CORRIDORS... CAUSING PERIODS OF REDUCED VISIBILITY. * SNOW ACCUMULATIONS: 3 TO 6 INCHES OVER MACDONALD AND HOMESTAKE PASS... THROUGH THE HIGHWAY 83 CORRIDOR FROM SEELEY LAKE TO CONDON AND GEORGETOWN LAKE. 1 TO 3 INCHES ELSEWHERE. * WINDS: EAST WINDS 10 TO 20 MPH WITH GUSTS UP 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 MEANS THAT PERIODS OF SNOW...BLOWING SNOW...OR ICE ACCUMULATIONS WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ009-010-190600- /O.CON.KMSO.WW.Y.0051.131219T0600Z-131219T1800Z/ WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY- 1024 AM MST WED DEC 18 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 11 AM MST THURSDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 11 AM MST THURSDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP THIS EVENING AND BECOME MODERATE AT TIMES THROUGH THURSDAY MORNING. ACCUMULATING SNOW WILL CAUSE AREAS OF SLICK SNOW COVERED ROADS. * SNOW ACCUMULATIONS: 2 TO 4 INCHES OVER WILLIAMS CREEK... GILMORE SUMMIT AND BANNOCK PASS. 1 TO 3 INCHES ELSEWHERE. * LOCATIONS IMPACTED INCLUDE...SHOUP...BANNOCK PASS...HIGHWAY 28 TENDOY TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...LEMHI PASS...SALMON PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MTZ003-190600- /O.CON.KMSO.WS.A.0008.131219T0000Z-131219T1800Z/ FLATHEAD/MISSION VALLEYS- 1024 AM MST WED DEC 18 2013 ...WINTER STORM WATCH REMAINS IN EFFECT FROM 5 PM MST THIS AFTERNOON THROUGH THURSDAY MORNING... A WINTER STORM WATCH REMAINS IN EFFECT FROM 5 PM MST THIS AFTERNOON THROUGH THURSDAY MORNING. * IMPACTS/TIMING: LIGHT TO MODERATE SNOW WILL DEVELOP THIS AFTERNOON... ALLOWING FOR SLUSH TO BUILD UP ON ROADWAYS. AN ARCTIC COLD FRONT WILL THEN MOVE THROUGH THE AREA THIS EVENING WHICH SHOULD QUICKLY DROP TEMPERATURES. ADDITIONALLY...GUSTY NORTHEAST WINDS MAY PRODUCE BLOWING SNOW AND VERY LOW VISIBILITIES AT TIMES. LOW WIND CHILLS MAY DEVELOP AS WELL. ROADS COULD BECOME VERY ICY AND DANGEROUS FOR TRAVEL WEDNESDAY EVENING INTO THURSDAY MORNING... ESPECIALLY THROUGH COLUMBIA FALLS AND KALISPELL SOUTH TO THE NORTH PART OF FLATHEAD LAKE. * SNOW ACCUMULATIONS: 2 TO 4 INCHES. * WINDS: NORTHEAST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. * LOCATIONS IMPACTED INCLUDE...FLATHEAD LAKE...FLATHEAD VALLEY... MISSION VALLEY...POLSON PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...BLOWING SNOW...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$
3 follow-up statements
000 WWUS45 KMSO 182122 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 222 PM MST WED DEC 18 2013 MTZ002-191200- /O.CON.KMSO.WS.W.0008.000000T0000Z-131219T1200Z/ WEST GLACIER REGION- 222 PM MST WED DEC 18 2013 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY. * IMPACTS/TIMING: SNOW WILL BECOME HEAVY AT TIMES THIS AFTERNOON LIMITING VISIBILITIES AND CREATING SLICK CONDITIONS. AN ARCTIC COLD FRONT WILL THEN MOVE THROUGH MARIAS PASS BY LATE THIS AFTERNOON AND THROUGH BAD ROCK CANYON THIS EVENING WHICH WILL QUICKLY DROP TEMPERATURES CAUSING FLASH FREEZING OF SURFACES. IT WILL ALSO BRING STRONG GUSTY NORTHEAST WINDS CAUSING BLOWING SNOW...VERY LOW VISIBILITIES AND SUB-ZERO WIND CHILLS. TRAVEL WILL BECOME VERY DIFFICULT... ESPECIALLY OVER MARIAS PASS THROUGH THURSDAY MORNING. * SNOW ACCUMULATIONS: 5 TO 8 INCHES. * WINDS: NORTHEAST 20 TO 30 MPH WITH GUSTS UP TO 45 MPH. * LOCATIONS IMPACTED INCLUDE...BAD ROCK CANYON...ESSEX...HIGHWAY 83 BIGFORK TO SWAN LAKE...MARIAS PASS...POLEBRIDGE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... BLOWING SNOW...OR ICE ACCUMULATIONS ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ MTZ003-191200- /O.UPG.KMSO.WS.A.0008.131219T0000Z-131219T1800Z/ /O.EXA.KMSO.WW.Y.0051.131219T0000Z-131219T1800Z/ FLATHEAD/MISSION VALLEYS- 222 PM MST WED DEC 18 2013 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST THURSDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST THURSDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * IMPACTS/TIMING: SNOW WILL DEVELOP THIS AFTERNOON ACROSS THE FLATHEAD VALLEY AND OVERNIGHT FOR THE MISSION VALLEY CREATING SLICK ROADS. AN ARCTIC FRONT WILL MOVE THROUGH BY THIS EVENING INTO THE OVERNIGHT AND BRING FALLING TEMPERATURES, GUSTY NORTHEAST WINDS WHICH MAY PRODUCE BLOWING SNOW AND LOW VISIBILITIES AT TIMES. SUB-ZERO WIND CHILLS WILL BE FELT TONIGHT INTO THURSDAY MORNING. ROADS COULD BECOME VERY ICY AND MAKE TRAVEL DIFFICULT THIS EVENING INTO THURSDAY MORNING... ESPECIALLY THROUGH COLUMBIA FALLS AND KALISPELL SOUTH TO THE NORTH PART OF FLATHEAD LAKE. * SNOW ACCUMULATIONS: 1 TO 4 INCHES. * WINDS: NORTHEAST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. GUSTS OVER 40 MPH THROUGH BADROCK CANYON. * LOCATIONS IMPACTED INCLUDE...FLATHEAD LAKE...FLATHEAD VALLEY... MISSION VALLEY...POLSON PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...BLOWING SNOW...OR ICE ACCUMULATIONS WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ005-191200- /O.NEW.KMSO.WS.A.0009.131220T1800Z-131221T1800Z/ /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ NORTHERN CLEARWATER MOUNTAINS- 122 PM PST WED DEC 18 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY... ...WINTER STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING. A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP TODAY AND BECOME MODERATE AT TIMES THROUGH TONIGHT. ACCUMULATING SNOW WILL CAUSE AREAS OF SLICK SNOW COVERED ROADS... ESPECIALLY OVER LOLO AND LOST TRAIL PASSES. * SNOW ACCUMULATIONS: 3 TO 6 INCHES OVER THE MOUNTAIN PASSES. 1 TO 3 INCHES IN LOCATIONS ABOVE 2000 FEET. UP TO AN INCH FOR LOCATIONS BELOW 2000 FEET. * ANOTHER HEAVIER SNOW EVENT IS POSSIBLE FOR FRIDAY THROUGH SATURDAY. 6 TO 10 INCHES ARE POSSIBLE IN THE VALLEYS WITH UP TO A FOOT IN THE MOUNTAINS. * LOCATIONS IMPACTED INCLUDE...ELK RIVER...HIGHWAY 11 PIERCE TO HEADQUARTERS...PIERCE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...BLOWING SNOW...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ IDZ007-191200- /O.NEW.KMSO.WS.A.0009.131220T1800Z-131221T1800Z/ /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ OROFINO/GRANGEVILLE REGION- 122 PM PST WED DEC 18 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY... ...WINTER STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING FOR THE OROFINO TO KOOSKIA AREA... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING. A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP TODAY AND BECOME MODERATE AT TIMES THROUGH TONIGHT. ACCUMULATING SNOW WILL CAUSE AREAS OF SLICK ROADS... ESPECIALLY ON THE CAMAS PRAIRIE AND OVER WHITEBIRD GRADE. * SNOW ACCUMULATIONS: 1 TO 4 INCHES ON THE CAMAS PRAIRIE... GRANGEVILLE... WHITE BIRD GRADE AND GREER GRADE. 1 TO 2 INCHES OF SNOW ELSEWHERE. * ANOTHER HEAVIER SNOW EVENT IS POSSIBLE FOR FRIDAY THROUGH SATURDAY. 6 TO 10 INCHES ARE POSSIBLE IN THE VALLEYS. * LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND VICINITY...GREER GRADE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...BLOWING SNOW...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ MTZ001-004-191200- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1200Z/ KOOTENAI/CABINET REGION-LOWER CLARK FORK REGION- 222 PM MST WED DEC 18 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP TODAY AND LAST THROUGH THE EVENING. ACCUMULATING SNOW WILL CAUSE AREAS OF SLICK ROADS... ESPECIALLY OVER LOOKOUT PASS AND THE HIGHWAY 2 CORRIDOR BETWEEN LIBBY AND MARION. * SNOW ACCUMULATIONS: 3 TO 6 INCHES OVER THE MOUNTAIN PASSES SUCH AS LOOKOUT PASS. 1 TO 4 INCHES IN THE LOWER ELEVATIONS... LOCALLY UP TO 5 INCHES. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 2 KALISPELL TO LIBBY... HIGHWAY 37 EUREKA TO LIBBY...HIGHWAY 56 BULL LAKE ROAD... HIGHWAY 93 EUREKA TO WHITEFISH...EVARO HILL...HIGHWAY 200 THOMPSON FALLS TO PLAINS...HIGHWAY 200 TROUT CREEK TO HERON... I-90 LOOKOUT PASS TO HAUGAN PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ006-MTZ006-191200- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ SOUTHERN CLEARWATER MOUNTAINS-BITTERROOT/SAPPHIRE MOUNTAINS- 222 PM MST WED DEC 18 2013 /122 PM PST WED DEC 18 2013/ ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST /10 AM PST/ THURSDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST /10 AM PST/ THURSDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP TODAY AND BECOME MODERATE AT TIMES THROUGH WEDNESDAY NIGHT. ACCUMULATING SNOW WILL CAUSE AREAS OF SLICK SNOW COVERED ROADS... ESPECIALLY OVER LOLO AND LOST TRAIL PASSES. * SNOW ACCUMULATIONS: 3 TO 6 INCHES OVER THE MOUNTAIN PASSES. 1 TO 3 INCHES IN LOCATIONS ABOVE 2000 FEET. UP TO AN INCH FOR LOCATIONS BELOW 2000 FEET. * LOCATIONS IMPACTED INCLUDE...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 SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ008-191200- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ LOWER HELLS CANYON/SALMON RIVER REGION- 122 PM PST WED DEC 18 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP TODAY AND BECOME MODERATE AT TIMES THROUGH WEDNESDAY NIGHT. ACCUMULATING SNOW WILL CAUSE AREAS OF SLICK ROADS... ESPECIALLY ON THE CAMAS PRAIRIE AND OVER WHITEBIRD GRADE. * SNOW ACCUMULATIONS: 1 TO 4 INCHES ON THE CAMAS PRAIRIE... GRANGEVILLE... WHITE BIRD GRADE AND GREER GRADE. 1 TO 2 INCHES OF SNOW ELSEWHERE. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 95 SLATE CREEK TO RIGGINS...WHITE BIRD GRADE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MTZ007-043-191200- /O.CON.KMSO.WW.Y.0051.131219T0000Z-131219T1800Z/ BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY LAKE REGION- 222 PM MST WED DEC 18 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST THURSDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST THURSDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP EARLY THIS EVENING AND BECOME MODERATE AT TIMES THROUGH THURSDAY MORNING. ACCUMULATING SNOW WILL CAUSE AREAS OF SLICK ROADS. IN ADDITION... BLOWING SNOW IS POSSIBLE LATE TONIGHT INTO THURSDAY MORNING ALONG THE HIGHWAY 200... HIGHWAY 12 AND I- 90 CORRIDORS... CAUSING PERIODS OF REDUCED VISIBILITY. * SNOW ACCUMULATIONS: 3 TO 6 INCHES OVER MACDONALD AND HOMESTAKE PASS... THROUGH THE HIGHWAY 83 CORRIDOR FROM SEELEY LAKE TO CONDON AND GEORGETOWN LAKE. 1 TO 3 INCHES ELSEWHERE. * WINDS: EAST WINDS 10 TO 20 MPH WITH GUSTS UP 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 MEANS THAT PERIODS OF SNOW...BLOWING SNOW...OR ICE ACCUMULATIONS WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ009-010-191200- /O.CON.KMSO.WW.Y.0051.131219T0600Z-131219T1800Z/ WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY- 222 PM MST WED DEC 18 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 11 AM MST THURSDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 11 AM MST THURSDAY. * IMPACTS/TIMING: LIGHT SNOW WILL DEVELOP THIS EVENING AND BECOME MODERATE AT TIMES THROUGH THURSDAY MORNING. ACCUMULATING SNOW WILL CAUSE AREAS OF SLICK SNOW COVERED ROADS. * SNOW ACCUMULATIONS: 2 TO 4 INCHES OVER WILLIAMS CREEK... GILMORE SUMMIT AND BANNOCK PASS. 1 TO 3 INCHES ELSEWHERE. * LOCATIONS IMPACTED INCLUDE...SHOUP...BANNOCK PASS...HIGHWAY 28 TENDOY TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...LEMHI PASS...SALMON PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
000 WWUS45 KMSO 191057 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 357 AM MST THU DEC 19 2013 MTZ002-191200- /O.CON.KMSO.WS.W.0008.000000T0000Z-131219T1200Z/ WEST GLACIER REGION- 357 AM MST THU DEC 19 2013 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST EARLY THIS MORNING... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST EARLY THIS MORNING. * IMPACTS/TIMING: SLICK ROADWAYS WITH BLOWING AND DRIFTING SNOW AND LOW VISIBILITIES CAN BE EXPECTED THROUGH THIS MORNING. * TOTAL SNOW ACCUMULATIONS: 5 TO 8 INCHES. * WINDS CHILLS: 10 TO 20 DEGREES BELOW ZERO. * LOCATIONS IMPACTED INCLUDE...BAD ROCK CANYON...ESSEX...HIGHWAY 83 BIGFORK TO SWAN LAKE...MARIAS PASS...POLEBRIDGE && $$ IDZ006-191800- /O.EXA.KMSO.WS.A.0009.131220T1800Z-131221T1800Z/ /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ SOUTHERN CLEARWATER MOUNTAINS- 257 AM PST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... ...WINTER STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING. A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING. * IMPACTS/TIMING: SNOW ACCUMULATIONS HAVE CAUSED AREAS OF SLICK ROADS THAT WILL CONTINUE THROUGH THIS MORNING. * ANOTHER HEAVIER SNOW EVENT IS POSSIBLE FOR FRIDAY THROUGH SATURDAY. 6 TO 10 INCHES ARE POSSIBLE IN THE VALLEYS. * LOCATIONS IMPACTED INCLUDE...DIXIE...ELK CITY...HIGHWAY 12 LOWELL TO LOLO PASS PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...BLOWING SNOW...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ IDZ005-191800- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ /O.CON.KMSO.WS.A.0009.131220T1800Z-131221T1800Z/ NORTHERN CLEARWATER MOUNTAINS- 257 AM PST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING. A WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING. * IMPACTS/TIMING: SNOW ACCUMULATIONS HAVE CAUSED AREAS OF SLICK SNOW COVERED ROADS THAT WILL CONTINUE THROUGH THIS MORNING. * ANOTHER HEAVIER SNOW EVENT IS POSSIBLE FOR FRIDAY THROUGH SATURDAY. 6 TO 10 INCHES ARE POSSIBLE IN THE VALLEYS WITH UP TO A FOOT IN THE MOUNTAINS. * LOCATIONS IMPACTED INCLUDE...ELK RIVER...HIGHWAY 11 PIERCE TO HEADQUARTERS...PIERCE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...BLOWING SNOW...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ IDZ008-191800- /O.EXA.KMSO.WS.A.0009.131220T1800Z-131221T1800Z/ /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ LOWER HELLS CANYON/SALMON RIVER REGION- 257 AM PST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... ...WINTER STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING. A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING. * IMPACTS/TIMING: SNOW ACCUMULATIONS HAVE CAUSED AREAS OF SLICK ROADS THAT WILL CONTINUE INTO THIS MORNING... ESPECIALLY ON THE CAMAS PRAIRIE AND OVER WHITEBIRD GRADE. * ANOTHER HEAVIER SNOW EVENT IS POSSIBLE FOR FRIDAY THROUGH SATURDAY. 6 TO 10 INCHES ARE POSSIBLE IN THE VALLEYS. IN ADDITIONAL TO SNOW, GUSTY WINDS MAY DEVELOP AND CAUSE BLOWING AND DRIFTING SNOW AND LOW VISIBILITIES. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 95 SLATE CREEK TO RIGGINS...WHITE BIRD GRADE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...BLOWING SNOW...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ IDZ007-191800- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ /O.CON.KMSO.WS.A.0009.131220T1800Z-131221T1800Z/ OROFINO/GRANGEVILLE REGION- 257 AM PST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING. A WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING. * IMPACTS/TIMING: SNOW ACCUMULATIONS HAVE CAUSED AREAS OF SLICK ROADS THAT WILL CONTINUE INTO THIS MORNING... ESPECIALLY ON THE CAMAS PRAIRIE AND OVER WHITEBIRD AND GREER GRADES. * ANOTHER HEAVIER SNOW EVENT IS POSSIBLE FOR FRIDAY THROUGH SATURDAY. 6 TO 10 INCHES ARE POSSIBLE IN THE VALLEYS. IN ADDITIONAL TO SNOW, GUSTY WINDS MAY DEVELOP AND CAUSE BLOWING AND DRIFTING SNOW AND LOW VISIBILITIES. * LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND VICINITY...GREER GRADE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...BLOWING SNOW...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ MTZ001-004-191200- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1200Z/ KOOTENAI/CABINET REGION-LOWER CLARK FORK REGION- 357 AM MST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST EARLY THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST EARLY THIS MORNING. * IMPACTS/TIMING: SNOW ACCUMULATIONS HAVE CAUSED AREAS OF SLICK ROADS THAT WILL CONTINUE THROUGH THIS MORNING. && $$ MTZ006-191800- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ BITTERROOT/SAPPHIRE MOUNTAINS- 357 AM MST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING. * IMPACTS/TIMING: SNOW ACCUMULATIONS HAVE CAUSED AREAS OF SLICK SNOW COVERED ROADS THIS WILL CONTINUE THROUGH THIS MORNING... ESPECIALLY OVER LOLO AND LOST TRAIL PASSES. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 93 SULA TO LOST TRAIL PASS...LOLO PASS && $$ MTZ003-191800- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ FLATHEAD/MISSION VALLEYS- 357 AM MST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING. * IMPACTS/TIMING: GUSTY NORTHEAST WINDS WILL CONTINUE TO PRODUCE BLOWING SNOW AND LOW VISIBILITIES AT TIMES. SUB-ZERO WIND CHILLS WILL BE FELT INTO THIS MORNING. ICY AND SNOW COVERED ROADS WILL CONTINUE TO MAKE ROADWAYS VERY SLICK THROUGH THIS MORNING... ESPECIALLY THROUGH COLUMBIA FALLS AND KALISPELL SOUTH TO THE NORTH PART OF FLATHEAD LAKE. * WINDS: NORTHEAST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. * LOCATIONS IMPACTED INCLUDE...FLATHEAD LAKE...FLATHEAD VALLEY... MISSION VALLEY...POLSON && $$ MTZ007-043-191800- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY LAKE REGION- 357 AM MST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING. * IMPACTS/TIMING: WIND AND ACCUMULATING SNOW WILL CONTINUE TO CAUSE AREAS OF SLICK ROADWAYS THIS MORNING. BLOWING SNOW IS ALSO POSSIBLE ALONG THE HIGHWAY 200... HIGHWAY 12 AND I- 90 CORRIDORS... CAUSING PERIODS OF REDUCED VISIBILITY. * TOTAL SNOW ACCUMULATIONS: 3 TO 6 INCHES OVER MACDONALD AND HOMESTAKE PASS... THROUGH THE HIGHWAY 83 CORRIDOR FROM SEELEY LAKE TO CONDON AND GEORGETOWN LAKE. 1 TO 3 INCHES ELSEWHERE. * WINDS: NORTH AND EAST WINDS 10 TO 20 MPH WITH GUSTS UP 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 MEANS THAT PERIODS OF SNOW...BLOWING SNOW...OR ICE ACCUMULATIONS WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ009-010-191800- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY- 357 AM MST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING. * IMPACTS/TIMING: ACCUMULATING SNOW WILL CONTINUE TO CAUSE AREAS OF SLICK SNOW COVERED ROADS THROUGH THIS MORNING. * TOTAL SNOW ACCUMULATIONS: 2 TO 4 INCHES OVER WILLIAMS CREEK... GILMORE SUMMIT AND BANNOCK PASS. 1 TO 3 INCHES ELSEWHERE. * LOCATIONS IMPACTED INCLUDE...SHOUP...BANNOCK PASS...HIGHWAY 28 TENDOY TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...LEMHI PASS...SALMON PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
000 WWUS45 KMSO 191141 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 441 AM MST THU DEC 19 2013 MTZ002-191800- /O.CAN.KMSO.WS.W.0008.000000T0000Z-131219T1200Z/ /O.EXA.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ WEST GLACIER REGION- 441 AM MST THU DEC 19 2013 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST THIS MORNING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER WEATHER ADVISORY FOR SLICK ROADWAYS..BLOWING AND DRIFTING SNOW...WIND CHILLS...WHICH IS IN EFFECT UNTIL 11 AM MST THIS MORNING. * IMPACTS/TIMING: SLICK ROADWAYS WITH BLOWING AND DRIFTING SNOW AND LOW VISIBILITIES CAN BE EXPECTED THROUGH THIS MORNING. * WINDS CHILLS: 10 TO 20 DEGREES BELOW ZERO. * LOCATIONS IMPACTED INCLUDE...BAD ROCK CANYON...ESSEX...HIGHWAY 83 BIGFORK TO SWAN LAKE...MARIAS PASS...POLEBRIDGE && $$ MTZ001-004-191800- /O.EXT.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ KOOTENAI/CABINET REGION-LOWER CLARK FORK REGION- 441 AM MST THU DEC 19 2013 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 AM MST THIS MORNING... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 11 AM MST THIS MORNING. * IMPACTS/TIMING: SNOW ACCUMULATIONS HAVE CAUSED AREAS OF SLICK ROADS THAT WILL CONTINUE THROUGH THIS MORNING. && $$ IDZ005-006-191945- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ /O.CON.KMSO.WS.A.0009.131220T1800Z-131221T1800Z/ NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS- 341 AM PST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING. A WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING. * IMPACTS/TIMING: SNOW ACCUMULATIONS HAVE CAUSED AREAS OF SLICK ROADS THAT WILL CONTINUE THROUGH THIS MORNING. * ANOTHER HEAVIER SNOW EVENT IS POSSIBLE FOR FRIDAY THROUGH SATURDAY. 6 TO 10 INCHES ARE POSSIBLE IN THE VALLEYS. * LOCATIONS IMPACTED INCLUDE...ELK RIVER...HIGHWAY 11 PIERCE TO HEADQUARTERS...PIERCE...DIXIE...ELK CITY...HIGHWAY 12 LOWELL TO LOLO PASS PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...BLOWING SNOW...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ IDZ007-008-191945- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ /O.CON.KMSO.WS.A.0009.131220T1800Z-131221T1800Z/ OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION- 341 AM PST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... ...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING. A WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING. * IMPACTS/TIMING: SNOW ACCUMULATIONS HAVE CAUSED AREAS OF SLICK ROADS THAT WILL CONTINUE INTO THIS MORNING... ESPECIALLY ON THE CAMAS PRAIRIE AND OVER WHITEBIRD GRADE. * ANOTHER HEAVIER SNOW EVENT IS POSSIBLE FOR FRIDAY THROUGH SATURDAY. 6 TO 10 INCHES ARE POSSIBLE IN THE VALLEYS. IN ADDITIONAL TO SNOW... GUSTY WINDS MAY DEVELOP AND CAUSE BLOWING AND DRIFTING SNOW AND LOW VISIBILITIES. * LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND VICINITY...GREER GRADE...HIGHWAY 95 SLATE CREEK TO RIGGINS... WHITE BIRD GRADE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...BLOWING SNOW...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ MTZ006-191800- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ BITTERROOT/SAPPHIRE MOUNTAINS- 441 AM MST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING. * IMPACTS/TIMING: SNOW ACCUMULATIONS HAVE CAUSED AREAS OF SLICK SNOW COVERED ROADS THIS WILL CONTINUE THROUGH THIS MORNING... ESPECIALLY OVER LOLO AND LOST TRAIL PASSES. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 93 SULA TO LOST TRAIL PASS...LOLO PASS $$ MTZ003-191800- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ FLATHEAD/MISSION VALLEYS- 441 AM MST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING. * IMPACTS/TIMING: GUSTY NORTHEAST WINDS WILL CONTINUE TO PRODUCE BLOWING SNOW AND LOW VISIBILITIES AT TIMES. SUB-ZERO WIND CHILLS WILL BE FELT INTO THIS MORNING. ICY AND SNOW COVERED ROADS WILL CONTINUE TO MAKE ROADWAYS VERY SLICK THROUGH THIS MORNING... ESPECIALLY THROUGH COLUMBIA FALLS AND KALISPELL SOUTH TO THE NORTH PART OF FLATHEAD LAKE. * WINDS: NORTHEAST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. * LOCATIONS IMPACTED INCLUDE...FLATHEAD LAKE...FLATHEAD VALLEY... MISSION VALLEY...POLSON $$ MTZ007-043-191800- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY LAKE REGION- 441 AM MST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING. * IMPACTS/TIMING: WIND AND ACCUMULATING SNOW WILL CONTINUE TO CAUSE AREAS OF SLICK ROADWAYS THIS MORNING. BLOWING SNOW IS ALSO POSSIBLE ALONG THE HIGHWAY 200... HIGHWAY 12 AND I- 90 CORRIDORS... CAUSING PERIODS OF REDUCED VISIBILITY. * TOTAL SNOW ACCUMULATIONS: 3 TO 6 INCHES OVER MACDONALD AND HOMESTAKE PASS... THROUGH THE HIGHWAY 83 CORRIDOR FROM SEELEY LAKE TO CONDON AND GEORGETOWN LAKE. 1 TO 3 INCHES ELSEWHERE. * WINDS: NORTH AND EAST WINDS 10 TO 20 MPH WITH GUSTS UP 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 MEANS THAT PERIODS OF SNOW...BLOWING SNOW...OR ICE ACCUMULATIONS WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IDZ009-010-191800- /O.CON.KMSO.WW.Y.0051.000000T0000Z-131219T1800Z/ WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY- 441 AM MST THU DEC 19 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING. * IMPACTS/TIMING: ACCUMULATING SNOW WILL CONTINUE TO CAUSE AREAS OF SLICK SNOW COVERED ROADS THROUGH THIS MORNING. * TOTAL SNOW ACCUMULATIONS: 2 TO 4 INCHES OVER WILLIAMS CREEK... GILMORE SUMMIT AND BANNOCK PASS. 1 TO 3 INCHES ELSEWHERE. * LOCATIONS IMPACTED INCLUDE...SHOUP...BANNOCK PASS...HIGHWAY 28 TENDOY TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...LEMHI PASS...SALMON PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Missoula, MT wrote its last area forecast discussion before this winter storm warning went out at Dec 18, 3:49 AM MST, 6 hours 35 minutes earlier.
Area forecast discussion, Dec 18, 3:49 AM MST, 6 hours 35 minutes before
Area Forecast Discussion
National Weather Service Missoula MT
349 AM MST Wed Dec 18 2013
...Winter is coming back later today and tonight...
.DISCUSSION...The feature that will be moving through the Northern
Rockies later today through tonight remains to be fairly
complicated in nature. The latest forecast model runs have
decreased the precipitation amounts across the region, but certain
locations should still receive significant impacts from the event.
Light snow should develop across most of the region later this
afternoon as a weak cold front swings through the Pacific
Northwest. The snow intensity is anticipated to increase over
portions of Clearwater and Idaho counties during the evening hours
as the flow becomes northwesterly. Also during the evening hours,
an arctic front will be moving into northwest Montana. As this
front moves into the region the snow will be enhanced especially
over the Glacier park region. Flathead valley snow amounts are still
a little uncertain at this time, due to latest observations from
northern Alberta indicating that the arctic airmass is
fairly dry. This drier air moving into the Flathead valley could
hinder snow production, so the watch remains in effect. The
arctic and moisture is anticipated to move south into Lemhi county
and southwest Montana later tonight into Thursday morning causing
impactful snow especially in higher locations. The mountain passes
and Georgetown Lake are anticipated to receive several inches of
new snow by noon on Thursday. The precipitation will quickly move
out of the region on Thursday, but temperatures will drop 10 to 20
degrees compared to today. A few locations such as Butte and
Hamilton could see a difference of greater than 30 degrees between
today's and tomorrow's high temperatures.
There are still a few issues with the timing of snow arrival on
Friday, but there are still indications that snow will be falling
during the morning commute. If planning to drive Friday morning it
would be a good idea to leave extra time as travel may be slow
going. Even if snow is slow to start on Friday there is a good
chance that it will increase through the day and continue
overnight. Most of the lower elevations will have decreased impact
from snow through the weekend but mountain passes are expected to
have continued snow accumulations. Temperatures will moderate
through the weekend, but another trough for the beginning of the
week will bring cooler air with below average temperatures and
additional snow chances.
&&
.AVIATION...Two cold fronts are on track to pass through the
region today and tonight. The first front will move in from the
west and bring lowering cloud cover and developing precipitation
this morning in northwest Montana. South of the cold front,
breezy southwest winds can be expected from Grangeville, Hamilton
to Butte. Northeast winds will associate with the second front
that is currently passing southward through Alberta. Kalispell
will see increased winds and snow by this evening with the second
front. The rest of western Montana and Idaho will see north and
east winds overnight as the upper trough passes and colder air
moves in from the east.
&&
.MSO WATCHES/WARNINGS/ADVISORIES...
MT...WINTER WEATHER ADVISORY from 5 PM this afternoon to 11 AM MST
Thursday Butte/Blackfoot Region...Potomac/Seeley Lake
Region.
WINTER WEATHER ADVISORY from 11 AM this morning to 11 AM MST
Thursday Bitterroot/Sapphire Mountains.
WINTER WEATHER ADVISORY from 11 AM this morning to 5 AM MST
Thursday Kootenai/Cabinet Region...Lower Clark Fork Region.
WINTER STORM WATCH from this afternoon through Thursday morning
Flathead/Mission Valleys.
WINTER STORM WATCH from 2 PM MST this afternoon through Thursday
morning West Glacier Region.
ID...WINTER WEATHER ADVISORY from 11 PM this evening to 11 AM MST
Thursday Eastern Lemhi County...Western Lemhi County.
WINTER WEATHER ADVISORY from 10 AM this morning to 10 AM PST
Thursday Northern Clearwater Mountains...Southern
Clearwater Mountains.
WINTER WEATHER ADVISORY from 10 AM this morning to 10 AM PST
Thursday Lower Hells Canyon/Salmon River Region...
Orofino/Grangeville Region.
&&
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Winter Storm Warnings in Montana, 2013Every winter storm warning in 2013
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.