Alert archive / Montana / Winter Storm Warnings in 2008
Winter Storm Warning 16, NWS Missoula, MT
NWS Missoula, MT issued this winter storm warning at Dec 16, 2008, 1:41 PM MST for 11 counties in Montana; Clearwater County, Idaho County, Idaho. It took effect at Dec 17, 2008, 12:00 PM MST. It was in force for 40 hr. 20 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Dec 16, 2008, 1:41 PM MST (20:41 UTC)
- In effect from
- Dec 17, 2008, 12:00 PM MST
- Expired
- Dec 19, 2008, 4:07 AM MST
- In force
- 40 hr
- Issued by
- NWS Missoula, MT
Counties Clearwater County, ID, Idaho County, ID, Deer Lodge County, MT, 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, Silver Bow County, MT
The radar
The Missoula radar (KMSX), 22 km from the middle of the area, began a volume at 20:43 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, 7:26 AM MST | HEAVY SNOW 18.2 | 9 Nw Noxon, MT | TRAINED SPOTTER HAS RECEIVED 13.5 INCHES OF SNOW SINCE 7PM LAST NIGHT WITH A STORM TOTAL OF 18.2 INCHES. |
| Dec 18, 8:22 AM MST | HEAVY SNOW 10 | Kalispell, MT | |
| Dec 18, 8:30 AM MST | HEAVY SNOW 9.5 | Kila, MT | FELL OVERNIGHT |
| Dec 18, 8:43 AM MST | HEAVY SNOW 8 | Hungry Horse, MT | |
| Dec 18, 8:50 AM MST | HEAVY SNOW 10 | Evergreen, MT | |
| Dec 18, 8:54 AM MST | HEAVY SNOW 8 | Noxon, MT | |
| Dec 18, 9:05 AM MST | HEAVY SNOW 10 | Libby, MT | |
| Dec 18, 9:25 AM MST | HEAVY SNOW 7 | Polebridge, MT | |
| Dec 18, 9:25 AM MST | HEAVY SNOW 13 | Bigfork, MT | OVER THE LAST 24 HOURS. 4 INCHES OF SNOW BETWEEN 6AM AND 9AM |
| Dec 18, 9:45 AM MST | HEAVY SNOW 12 | Elk River, ID | |
| Dec 18, 10:15 AM MST | HEAVY SNOW 8 | Headquarters, ID | |
| Dec 18, 11:20 AM MST | HEAVY SNOW 6 | Troy, MT | |
| Dec 18, 12:10 PM MST | HEAVY SNOW 26 | 9 Nw Noxon, MT | SPOTTER CALLED BACK WITH AN ADDITIONAL 8 INCHES OF SNOW BETWEEN 7AM AND NOON. THIS TAKES HIS STORM TOTAL SNOW UP TO 26 INCHES. |
| Dec 18, 1:20 PM MST | HEAVY SNOW 8 | Polebridge, MT | 6 INCHES IN THE LAST 12 HOURS WITH 8 INCHES OVER THE LAST 24 HOURS |
| Dec 18, 1:20 PM MST | HEAVY SNOW 11 | Hungry Horse, MT | ANOTHER 3 INCHES OF SNOW REPORTED BY SPOTTER BETWEEN 9AM AND 1PM. THIS BRINGS THE NEW SNOW TOTAL UP TO 11 INCHES. |
| Dec 18, 2:25 PM MST | HEAVY SNOW 32 | 3 Nw Taft, MT | 32 INCHES OVER 24 HOURS AT THE BASE OF LOOKOUT PASS SKI AREA |
| Dec 18, 5:35 PM MST | SNOW 17 | 5 N Bigfork, MT | TRAINED SPOTTER CALLED WITH AN UPDATE OF 17.0 INCHES OF SNOW SINCE THURSDAY MORNING. |
| Dec 18, 5:37 PM MST | SNOW 16 | Creston, MT | |
| Dec 18, 7:30 PM MST | SNOW 14 | Kalispell, MT | 14.0 INCHES OF ESTIMATED STORM TOTAL SNOWFALL SINCE 11 PM THURSDAY. |
| Dec 18, 7:30 PM MST | SNOW 18.1 | 9 Nnw Noxon, MT | SPOTTER CALLED BACK WITH AN UPDATE OF 18.1 INCHES SINCE 7 AM THURSDAY. THIS BRINGS HIS STORM TOTAL SNOWFALL TO 35.8 INCHES SINCE WEDNESDAY MORNING. |
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, 8.7 hours before the alert went out and 185 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
- 1463 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 109 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 162041 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 141 PM MST TUE DEC 16 2008 .A VIGOROUS WEATHER SYSTEM WILL MOVE SOUTH FROM WESTERN CANADA IN THE PACIFIC NORTHWEST WEDNESDAY. THIS WILL SPREAD A MOIST AIRMASS OVER THE VERY COLD AIR ALREADY IN PLACE IN THE NORTHERN ROCKIES ...RESULTING IN PERIODS OF SNOW WHICH WILL BE HEAVY AT TIMES THROUGH THURSDAY OR THURSDAY NIGHT. IN ADDITION...THE NEXT ARCTIC AIRMASS WILL PUSH INTO THE AREA FROM CANADA...DURING THE DAY THURSDAY. IDZ005-MTZ001-004-170500- /O.UPG.KMSO.WS.A.0020.081218T0000Z-081219T0000Z/ /O.NEW.KMSO.WS.W.0016.081217T1900Z-081219T0000Z/ NORTHERN CLEARWATER MOUNTAINS-KOOTENAI/CABINET REGION- LOWER CLARK FORK REGION- 141 PM MST TUE DEC 16 2008 /1241 PM PST TUE DEC 16 2008/ ...WINTER STORM WARNING IN EFFECT FROM NOON MST /11 AM PST/ WEDNESDAY TO 5 PM MST /4 PM PST/ THURSDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM NOON MST /11 AM PST/ WEDNESDAY TO 5 PM MST /4 PM PST/ THURSDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. SNOW WILL DEVELOP WEDNESDAY AFTERNOON IN NORTHWEST MONTANA AND THE NORTHERN CLEARWATER MOUNTAINS. THE SNOW WILL THEN CONTINUE...HEAVY AT TIMES THROUGH MUCH OF THURSDAY. TOTAL ACCUMULATIONS OF 6 TO 12 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 10 TO 18 INCHES AT THE HIGHER ELEVATIONS. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... BLOWING SNOW...OR FREEZING RAIN ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ002-003-043-170500- /O.UPG.KMSO.WS.A.0020.081218T0000Z-081219T0000Z/ /O.NEW.KMSO.WS.W.0016.081217T1900Z-081219T0000Z/ WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- POTOMAC/SEELEY LAKE REGION- 141 PM MST TUE DEC 16 2008 ...WINTER STORM WARNING IN EFFECT FROM NOON WEDNESDAY TO 5 PM MST THURSDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM NOON WEDNESDAY TO 5 PM MST THURSDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. SNOW WILL DEVELOP AND BECOME HEAVIER BY LATE WEDNESDAY AFTERNOON. THE SNOW WILL THEN CONTINUE...HEAVY AT TIMES THROUGH THURSDAY. NEW SNOW ACCUMULATIONS OF 5 TO 10 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 8 TO 16 INCHES IN HIGHER ELEVATIONS. IN ADDITION... ARCTIC AIR WILL SPREAD AND SOUTH AND WEST OVER THE AREA DURING THURSDAY. THIS WILL RESULT IN LOCAL BLOWING SNOW AND VERY LOW WIND CHILL VALUES. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... BLOWING SNOW...OR FREEZING RAIN ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ IDZ006-MTZ006-170500- /O.UPG.KMSO.WS.A.0020.081218T0000Z-081219T0000Z/ /O.NEW.KMSO.WS.W.0016.081217T1900Z-081219T1200Z/ SOUTHERN CLEARWATER MOUNTAINS-BITTERROOT/SAPPHIRE MOUNTAINS- 141 PM MST TUE DEC 16 2008 /1241 PM PST TUE DEC 16 2008/ ...WINTER STORM WARNING IN EFFECT FROM NOON MST /11 AM PST/ WEDNESDAY TO 5 AM MST /4 AM PST/ FRIDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM NOON MST /11 AM PST/ WEDNESDAY TO 5 AM MST /4 AM PST/ FRIDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. SNOW WILL DEVELOP AND BECOME HEAVY BY LATE WEDNESDAY AFTERNOON. THE SNOW WILL THEN CONTINUE...HEAVY AT TIMES THROUGH THURSDAY NIGHT. ACCUMULATIONS OF 6 TO 12 INCHES ARE EXPECTED AT LOWER ELEVATIONS NORTH OF THE SALMON RIVER WITH ONE TO TWO FEET IN THE HIGHER MOUNTAINS. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... BLOWING SNOW...OR FREEZING RAIN ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ005-170500- /O.CON.KMSO.WS.A.0020.081218T0000Z-081219T0000Z/ MISSOULA/BITTERROOT VALLEYS- 141 PM MST TUE DEC 16 2008 ...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY AFTERNOON... A WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY AFTERNOON FOR THE MISSOULA AND BITTERROOT VALLEYS. A VIGOROUS WEATHER SYSTEM IS EXPECTED TO DEVELOP AND DIRECT SIGNIFICANT MOISTURE OVER THE REGION LATE WEDNESDAY AND THURSDAY. SNOW ACCUMULATIONS OF 4 TO 8 INCHES IN THE VALLEYS ARE POSSIBLE DURING THIS PERIOD AND SNOW MAY PERSIST THROUGH THURSDAY NIGHT ALONG WITH LOCAL BLOWING SNOW AND LOW WIND CHILL VALUES. A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. $$
9 follow-up statements
000 WWUS45 KMSO 170019 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 519 PM MST TUE DEC 16 2008 .A VIGOROUS WEATHER SYSTEM WILL MOVE SOUTH FROM WESTERN CANADA IN THE PACIFIC NORTHWEST WEDNESDAY. THIS WILL SPREAD A MOIST AIRMASS OVER THE VERY COLD AIR ALREADY IN PLACE IN THE NORTHERN ROCKIES ...RESULTING IN PERIODS OF SNOW WHICH WILL BE HEAVY AT TIMES THROUGH THURSDAY OR THURSDAY NIGHT. IN ADDITION...THE NEXT ARCTIC AIRMASS WILL PUSH INTO THE AREA FROM CANADA DURING THE DAY THURSDAY CREATING AREAS OF BLOWING AND DRIFTING SNOW. IDZ006-MTZ006-171200- /O.EXT.KMSO.WS.W.0016.081218T0000Z-081219T1200Z/ SOUTHERN CLEARWATER MOUNTAINS-BITTERROOT/SAPPHIRE MOUNTAINS- 519 PM MST TUE DEC 16 2008 /419 PM PST TUE DEC 16 2008/ ...WINTER STORM WARNING NOW IN EFFECT FROM 5 PM MST /4 PM PST/ WEDNESDAY TO 5 AM MST /4 AM PST/ FRIDAY... THE WINTER STORM WARNING IS NOW IN EFFECT FROM 5 PM MST /4 PM PST/ WEDNESDAY TO 5 AM MST /4 AM PST/ FRIDAY. SNOW ACCUMULATIONS OF 6 TO 12 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH ONE TO TWO FEET IN THE HIGHER MOUNTAINS WEDNESDAY NIGHT THROUGH EARLY FRIDAY MORNING. SNOW WILL DEVELOP BY WEDNESDAY AFTERNOON...BECOMING MODERATE AND IMPACTING THE HIGHWAY 12 CORRIDOR FROM POWELL IDAHO TO LOLO PASS OVERNIGHT INTO THURSDAY MORNING. MODERATE TO HEAVY SNOW WILL SPREAD SOUTHWARD THURSDAY AND THURSDAY NIGHT IMPACTING THE ENTIRE AREA. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ IDZ005-MTZ001-004-171200- /O.CON.KMSO.WS.W.0016.081217T1900Z-081219T0000Z/ NORTHERN CLEARWATER MOUNTAINS-KOOTENAI/CABINET REGION- LOWER CLARK FORK REGION- 519 PM MST TUE DEC 16 2008 /419 PM PST TUE DEC 16 2008/ ...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON MST /11 AM PST/ WEDNESDAY TO 5 PM MST /4 PM PST/ THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT FROM NOON MST /11 AM PST/ WEDNESDAY TO 5 PM MST /4 PM PST/ THURSDAY. TOTAL SNOW ACCUMULATIONS OF 6 TO 12 INCHES ARE EXPECTED AT THE LOWER ELEVATIONS WITH 10 TO 18 INCHES AT THE HIGHER ELEVATIONS WEDNESDAY AFTERNOON THROUGH THURSDAY AFTERNOON. SNOW WILL DEVELOP WEDNESDAY AFTERNOON AND CONTINUE...MODERATE TO HEAVY AT TIMES THROUGH MUCH OF THURSDAY. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ002-003-043-171200- /O.CON.KMSO.WS.W.0016.081217T1900Z-081219T0000Z/ WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- POTOMAC/SEELEY LAKE REGION- 519 PM MST TUE DEC 16 2008 ...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON WEDNESDAY TO 5 PM MST THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT FROM NOON WEDNESDAY TO 5 PM MST THURSDAY. NEW SNOW ACCUMULATIONS OF 5 TO 10 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 8 TO 16 INCHES IN HIGHER ELEVATIONS. IN ADDITION...ARCTIC AIR WILL SPREAD AND SOUTH AND WEST OVER THE AREA THURSDAY. THIS WILL RESULT IN LOCAL BLOWING SNOW AND VERY LOW WIND CHILL VALUES. SNOW WILL DEVELOP AND BECOME HEAVIER BY LATE WEDNESDAY AFTERNOON. THE SNOW WILL THEN CONTINUE...HEAVY AT TIMES THROUGH THURSDAY. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ005-171200- /O.EXT.KMSO.WS.A.0020.081218T1800Z-081219T1800Z/ MISSOULA/BITTERROOT VALLEYS- 519 PM MST TUE DEC 16 2008 ...WINTER STORM WATCH NOW IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY MORNING... THE WINTER STORM WATCH IS NOW IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY MORNING. A VIGOROUS WEATHER SYSTEM IS EXPECTED TO DEVELOP AND DIRECT SIGNIFICANT MOISTURE OVER THE REGION LATE WEDNESDAY THROUGH FRIDAY. LIGHT SNOW IS POSSIBLE OVER THE AREA WEDNESDAY AFTERNOON AND NIGHT. HOWEVER...ACCUMULATING SNOW IS EXPECTED MORE ON THURSDAY WITH 4 TO 8 INCHES IN THE VALLEYS POSSIBLE. SNOW MAY PERSIST THROUGH FRIDAY MORNING ALONG WITH LOCAL BLOWING SNOW AND LOW WIND CHILL VALUES. A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. $$
000 WWUS45 KMSO 171159 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 459 AM MST WED DEC 17 2008 .A VIGOROUS WEATHER SYSTEM WILL MOVE SOUTH FROM WESTERN CANADA TO THE PACIFIC NORTHWEST COAST DURING TODAY...MOVING PACIFIC MOISTURE OVER THE VERY COLD AIR IN PLACE ALONG THE NORTHERN ROCKIES. WIDESPREAD SNOW IS ANTICIPATED TO DEVELOP...BECOMING HEAVY AT TIMES TONIGHT THROUGH EARLY FRIDAY. IN ADDITION...ANOTHER WINDY BLAST OF ARCTIC AIR WILL BE DRAWN INTO THE REGION DURING THE DAY ON THURSDAY...CREATING AREAS OF BLOWING AND DRIFTING SNOW. IDZ005-MTZ001-004-172200- /O.CON.KMSO.WS.W.0016.081217T1900Z-081219T0000Z/ NORTHERN CLEARWATER MOUNTAINS-KOOTENAI/CABINET REGION- LOWER CLARK FORK REGION- 459 AM MST WED DEC 17 2008 /359 AM PST WED DEC 17 2008/ ...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON MST /11 AM PST/ TODAY TO 5 PM MST /4 PM PST/ THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT FROM NOON MST /11 AM PST/ TODAY TO 5 PM MST /4 PM PST/ THURSDAY. TOTAL SNOW ACCUMULATIONS OF 6 TO 12 INCHES ARE EXPECTED AT THE LOWER ELEVATIONS WITH 10 TO 18 INCHES AT THE HIGHER ELEVATIONS THIS AFTERNOON THROUGH THURSDAY AFTERNOON. SNOW WILL DEVELOP THIS AFTERNOON AND CONTINUE...MODERATE TO HEAVY AT TIMES THROUGH MUCH OF THURSDAY. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ002-003-043-172200- /O.CON.KMSO.WS.W.0016.081217T1900Z-081219T0000Z/ WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- POTOMAC/SEELEY LAKE REGION- 459 AM MST WED DEC 17 2008 ...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON TODAY TO 5 PM MST THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT FROM NOON TODAY TO 5 PM MST THURSDAY. NEW SNOW ACCUMULATIONS OF 5 TO 10 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 8 TO 16 INCHES IN HIGHER ELEVATIONS. IN ADDITION...ARCTIC AIR WILL SPREAD AND SOUTH AND WEST OVER THE AREA THURSDAY. THIS WILL RESULT IN LOCAL BLOWING SNOW AND VERY LOW WIND CHILL VALUES. SNOW WILL DEVELOP AND BECOME HEAVIER BY LATE THIS AFTERNOON. THE SNOW WILL THEN CONTINUE...HEAVY AT TIMES THROUGH THURSDAY. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ IDZ006-MTZ006-172200- /O.CON.KMSO.WS.W.0016.081218T0000Z-081219T1200Z/ SOUTHERN CLEARWATER MOUNTAINS-BITTERROOT/SAPPHIRE MOUNTAINS- 459 AM MST WED DEC 17 2008 /359 AM PST WED DEC 17 2008/ ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM MST /4 PM PST/ THIS AFTERNOON TO 5 AM MST /4 AM PST/ FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM MST /4 PM PST/ THIS AFTERNOON TO 5 AM MST /4 AM PST/ FRIDAY. SNOW ACCUMULATIONS OF 6 TO 12 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH ONE TO TWO FEET IN THE HIGHER MOUNTAINS TONIGHT THROUGH EARLY FRIDAY MORNING. SNOW WILL DEVELOP BY THIS AFTERNOON...BECOMING MODERATE AND IMPACTING THE HIGHWAY 12 CORRIDOR FROM POWELL IDAHO TO LOLO PASS OVERNIGHT INTO THURSDAY MORNING. MODERATE TO HEAVY SNOW WILL SPREAD SOUTHWARD THURSDAY AND THURSDAY NIGHT IMPACTING THE ENTIRE AREA. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ005-172200- /O.CON.KMSO.WS.A.0020.081218T1800Z-081219T1800Z/ MISSOULA/BITTERROOT VALLEYS- 459 AM MST WED DEC 17 2008 ...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY MORNING... A WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY MORNING. A VIGOROUS WEATHER SYSTEM IS EXPECTED TO DEVELOP AND DIRECT SIGNIFICANT MOISTURE OVER THE REGION LATE TONIGHT THROUGH FRIDAY. LIGHT SNOW IS POSSIBLE OVER THE AREA THIS AFTERNOON AND TONIGHT. HOWEVER...ACCUMULATING SNOW IS EXPECTED MAINLY ON THURSDAY...WITH 4 TO 8 INCHES IN THE VALLEYS POSSIBLE. SNOW MAY PERSIST THROUGH FRIDAY MORNING ALONG WITH LOCAL BLOWING SNOW AND LOW WIND CHILL VALUES. A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. $$
000 WWUS45 KMSO 172043 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 143 PM MST WED DEC 17 2008 .A VIGOROUS WEATHER SYSTEM WILL MOVE SOUTH FROM WESTERN CANADA TO THE PACIFIC NORTHWEST COAST TONIGHT...MOVING PACIFIC MOISTURE OVER THE VERY COLD AIR IN PLACE ALONG THE NORTHERN ROCKIES. WIDESPREAD SNOW IS ANTICIPATED TO DEVELOP...BECOMING HEAVY AT TIMES TONIGHT THROUGH EARLY FRIDAY. IN ADDITION...ANOTHER WINDY BLAST OF ARCTIC AIR WILL BE DRAWN INTO THE REGION DURING THE DAY ON THURSDAY...CREATING AREAS OF BLOWING AND DRIFTING SNOW. IDZ005-MTZ001-004-180500- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T0000Z/ NORTHERN CLEARWATER MOUNTAINS-KOOTENAI/CABINET REGION- LOWER CLARK FORK REGION- 143 PM MST WED DEC 17 2008 /1243 PM PST WED DEC 17 2008/ ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST /4 PM PST/ THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST /4 PM PST/ THURSDAY. TOTAL SNOW ACCUMULATIONS OF 10 TO 15 INCHES ARE EXPECTED AT THE LOWER ELEVATIONS WITH 12 TO 20 INCHES AT THE HIGHER ELEVATIONS BY THURSDAY AFTERNOON. SNOW WILL CONTINUE WITH SNOWFALL RATES BEING MODERATE TO HEAVY AT TIMES THROUGH MUCH OF THURSDAY. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ002-003-043-180500- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T0000Z/ WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- POTOMAC/SEELEY LAKE REGION- 143 PM MST WED DEC 17 2008 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY. NEW SNOW ACCUMULATIONS OF 5 TO 10 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 10 TO 18 INCHES IN HIGHER ELEVATIONS. IN ADDITION...ARCTIC AIR WILL SPREAD AND SOUTH AND WEST OVER THE AREA THURSDAY. THIS WILL RESULT IN LOCAL BLOWING SNOW AND VERY LOW WIND CHILL VALUES. THE SNOW WILL CONTINUE WITH SNOWFALL RATES BEING HEAVY AT TIMES THROUGH THURSDAY. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ IDZ006-MTZ006-180500- /O.CON.KMSO.WS.W.0016.081218T0000Z-081219T1200Z/ SOUTHERN CLEARWATER MOUNTAINS-BITTERROOT/SAPPHIRE MOUNTAINS- 143 PM MST WED DEC 17 2008 /1243 PM PST WED DEC 17 2008/ ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM MST /4 PM PST/ THIS AFTERNOON TO 5 AM MST /4 AM PST/ FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM MST /4 PM PST/ THIS AFTERNOON TO 5 AM MST /4 AM PST/ FRIDAY. SNOW ACCUMULATIONS OF 6 TO 12 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH ONE TO TWO FEET IN THE HIGHER MOUNTAINS TONIGHT THROUGH EARLY FRIDAY MORNING. SNOW WILL DEVELOP BY THIS AFTERNOON...BECOMING MODERATE AND IMPACTING THE HIGHWAY 12 CORRIDOR FROM POWELL IDAHO TO LOLO PASS OVERNIGHT INTO THURSDAY MORNING. MODERATE TO HEAVY SNOW WILL SPREAD SOUTHWARD THURSDAY AND THURSDAY NIGHT IMPACTING THE ENTIRE AREA. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ005-180500- /O.CON.KMSO.WS.A.0020.081218T1800Z-081219T1800Z/ MISSOULA/BITTERROOT VALLEYS- 143 PM MST WED DEC 17 2008 ...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY MORNING... A WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY MORNING. A VIGOROUS WEATHER SYSTEM IS EXPECTED TO DEVELOP AND DIRECT SIGNIFICANT MOISTURE OVER THE REGION LATE THURSDAY MORNING THROUGH FRIDAY. LIGHT SNOW IS POSSIBLE OVER THE AREA THIS AFTERNOON AND TONIGHT. HOWEVER...ACCUMULATING SNOW IS EXPECTED MAINLY ON THURSDAY...WITH 4 TO 8 INCHES IN THE VALLEYS POSSIBLE. SNOW MAY PERSIST THROUGH FRIDAY MORNING ALONG WITH LOCAL BLOWING SNOW AND LOW WIND CHILL VALUES. A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. $$
000 WWUS45 KMSO 180451 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 951 PM MST WED DEC 17 2008 .A VIGOROUS WEATHER SYSTEM WILL MOVE SOUTH FROM WESTERN CANADA TO THE PACIFIC NORTHWEST COAST TONIGHT...MOVING PACIFIC MOISTURE OVER THE VERY COLD AIR IN PLACE ALONG THE NORTHERN ROCKIES. IN ADDITION...ANOTHER WINDY BLAST OF ARCTIC AIR WILL BE DRAWN INTO THE REGION DURING THE DAY ON THURSDAY...CREATING AREAS OF BLOWING AND DRIFTING SNOW. IDZ005-MTZ001-004-181300- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T0000Z/ NORTHERN CLEARWATER MOUNTAINS-KOOTENAI/CABINET REGION- LOWER CLARK FORK REGION- 951 PM MST WED DEC 17 2008 /851 PM PST WED DEC 17 2008/ ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST /4 PM PST/ THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST /4 PM PST/ THURSDAY. TOTAL SNOW ACCUMULATIONS OF 10 TO 15 INCHES ARE EXPECTED AT THE LOWER ELEVATIONS WITH 12 TO 20 INCHES AT THE HIGHER ELEVATIONS BY THURSDAY AFTERNOON. SNOW WILL CONTINUE WITH SNOWFALL RATES BEING MODERATE TO HEAVY AT TIMES THROUGH MUCH OF THURSDAY. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ002-003-043-181300- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T0000Z/ WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- POTOMAC/SEELEY LAKE REGION- 951 PM MST WED DEC 17 2008 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY. NEW SNOW ACCUMULATIONS OF 5 TO 10 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 10 TO 18 INCHES IN HIGHER ELEVATIONS. IN ADDITION...ARCTIC AIR WILL SPREAD OVER THE AREA THURSDAY. THIS WILL RESULT IN LOCAL BLOWING SNOW AND VERY LOW WIND CHILL VALUES. THE SNOW WILL CONTINUE WITH SNOWFALL RATES BEING HEAVY AT TIMES THROUGH THURSDAY. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ IDZ006-MTZ006-181300- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T1200Z/ SOUTHERN CLEARWATER MOUNTAINS-BITTERROOT/SAPPHIRE MOUNTAINS- 951 PM MST WED DEC 17 2008 /851 PM PST WED DEC 17 2008/ ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST /4 AM PST/ FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST /4 AM PST/ FRIDAY. SNOW ACCUMULATIONS OF 6 TO 12 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH ONE TO TWO FEET IN THE HIGHER MOUNTAINS BY EARLY FRIDAY MORNING. SNOW WILL SPREAD SOUTH OVERNIGHT...BECOMING MODERATE AT TIMES AND IMPACTING THE HIGHWAY 12 CORRIDOR FROM POWELL IDAHO TO LOLO PASS INTO THURSDAY MORNING. MODERATE TO HEAVY SNOW WILL SPREAD SOUTHWARD THURSDAY AND THURSDAY NIGHT IMPACTING THE ENTIRE AREA. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ005-181300- /O.UPG.KMSO.WS.A.0020.081218T1800Z-081219T1800Z/ /O.NEW.KMSO.WW.Y.0018.081218T2200Z-081219T1800Z/ MISSOULA/BITTERROOT VALLEYS- 951 PM MST WED DEC 17 2008 ...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM THURSDAY TO 11 AM MST FRIDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW AND LOCAL BLOWING SNOW...WHICH IS IN EFFECT FROM 3 PM THURSDAY TO 11 AM MST FRIDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. TOTAL SNOW ACCUMULATIONS OF 4 TO 6 INCHES...LOCALLY UP TO 8 INCHES ON THE BENCHES OF THE MISSOULA AND BITTERROOT VALLEYS BY LATE FRIDAY MORNING. NORTH WINDS WILL DEVELOP IN THE MISSOULA AND BITTERROOT VALLEY THURSDAY EVENING AND RESULT IN AREAS OF BLOWING SNOW. THE WINDS WILL BECOME EASTERLY AFTER MIDNIGHT WITH LOCAL WHITEOUT CONDITIONS THROUGH HELLGATE CANYON THROUGH EARLY FRIDAY MORNING. A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$
000 WWUS45 KMSO 181205 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 505 AM MST THU DEC 18 2008 .ANOTHER VIGOROUS WEATHER SYSTEM HAS MOVED INTO THE PACIFIC NORTHWEST COAST...FEEDING MOISTURE OVER THE VERY COLD AIR IN PLACE ALONG THE NORTHERN ROCKIES. IN ADDITION...ANOTHER WINDY BLAST OF ARCTIC AIR WILL BE DRAWN INTO THE NORTHWEST MONTANA VALLEYS TONIGHT...AND THEN THROUGH THE REMAINDER OF WESTERN MONTANA ON FRIDAY...CREATING AREAS OF BLOWING AND DRIFTING SNOW AND BITTERLY COLD WIND CHILLS. IDZ005-MTZ001-004-182200- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T0000Z/ NORTHERN CLEARWATER MOUNTAINS-KOOTENAI/CABINET REGION- LOWER CLARK FORK REGION- 505 AM MST THU DEC 18 2008 /405 AM PST THU DEC 18 2008/ ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST /4 PM PST/ THIS AFTERNOON... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST /4 PM PST/ THIS AFTERNOON. TOTAL SNOW ACCUMULATIONS OF 10 TO 15 INCHES ARE EXPECTED AT THE LOWER ELEVATIONS WITH 12 TO 20 INCHES AT THE HIGHER ELEVATIONS BY THURSDAY AFTERNOON. SNOW WILL CONTINUE WITH SNOWFALL RATES BEING MODERATE TO HEAVY AT TIMES THROUGH MUCH OF TODAY. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ002-003-043-182200- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T0000Z/ WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- POTOMAC/SEELEY LAKE REGION- 505 AM MST THU DEC 18 2008 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. NEW SNOW ACCUMULATIONS OF 5 TO 10 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 10 TO 18 INCHES IN HIGHER ELEVATIONS. IN ADDITION...ARCTIC AIR WILL SPREAD OVER THE AREA TODAY AND TONIGHT. THIS WILL RESULT IN LOCAL BLOWING SNOW AND VERY LOW WIND CHILL VALUES. SNOWFALL RATES WILL BE MODERATE...POTENTIALLY HEAVY AT TIMES THROUGH THE DAY TODAY IN THE WEST GLACIER REGION AND FLATHEAD VALLEY. THEN SNOWFALL RATES WILL BEGIN PICKING UP IN THE MISSION VALLEY AND POTOMAC/SEELEY LAKE REGION LATE TODAY AND TONIGHT. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ IDZ006-MTZ006-182200- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T1200Z/ SOUTHERN CLEARWATER MOUNTAINS-BITTERROOT/SAPPHIRE MOUNTAINS- 505 AM MST THU DEC 18 2008 /405 AM PST THU DEC 18 2008/ ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST /4 AM PST/ FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST /4 AM PST/ FRIDAY. SNOW ACCUMULATIONS OF 6 TO 12 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH ONE TO TWO FEET IN THE HIGHER MOUNTAINS BY EARLY FRIDAY MORNING. SNOW WILL SPREAD SOUTH OVERNIGHT...BECOMING MODERATE AT TIMES AND IMPACTING THE HIGHWAY 12 CORRIDOR FROM POWELL IDAHO TO LOLO PASS INTO FRIDAY MORNING. MODERATE TO HEAVY SNOW WILL SPREAD SOUTHWARD TODAY AND TONIGHT IMPACTING THE ENTIRE AREA. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... AND BLOWING SNOW ARE EXPECTED OR OCCURRING. STRONG WINDS AND DANGEROUS WIND CHILLS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ005-182200- /O.CON.KMSO.WW.Y.0018.081218T2200Z-081219T1800Z/ MISSOULA/BITTERROOT VALLEYS- 505 AM MST THU DEC 18 2008 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO 11 AM MST FRIDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO 11 AM MST FRIDAY. TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES...LOCALLY UP TO 7 INCHES ON THE BENCHES OF THE MISSOULA AND BITTERROOT VALLEYS BY LATE FRIDAY MORNING. NORTH WINDS WILL DEVELOP IN THE MISSOULA AND BITTERROOT VALLEYS TONIGHT AND RESULT IN AREAS OF BLOWING SNOW. THE WINDS WILL BECOME EASTERLY AFTER MIDNIGHT WITH LOCAL WHITEOUT CONDITIONS THROUGH HELLGATE CANYON THROUGH EARLY FRIDAY MORNING. A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$
000 WWUS45 KMSO 181759 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 1059 AM MST THU DEC 18 2008 MTZ043-181900- /O.CAN.KMSO.WS.W.0016.000000T0000Z-081219T0000Z/ POTOMAC/SEELEY LAKE REGION- 1059 AM MST THU DEC 18 2008 ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER STORM WARNING. SNOW WILL HAVE A DIFFICULT TIME REACHING THE VALLEYS IN THE POTOMAC SEELEY LAKE REGION THROUGH THE DAY...WHILE LIGHT TO MODERATE ACCUMULATIONS ARE POSSIBLE IN THE MOUNTAINS. TONIGHT...HOWEVER...BETTER LIFT IN THE REGION SHOULD ALLOW ACCUMULATIONS DOWN TO THE VALLEYS...GENERALLY IN THE 2 TO 5 INCH RANGE. $$ MTZ001-004-190000- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T0000Z/ KOOTENAI/CABINET REGION-LOWER CLARK FORK REGION- 1059 AM MST THU DEC 18 2008 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. TOTAL SNOW ACCUMULATIONS OF 10 TO 15 INCHES ARE EXPECTED AT THE LOWER ELEVATIONS WITH 12 TO 20 INCHES AT THE HIGHER ELEVATIONS BY THIS AFTERNOON. SNOW WILL CONTINUE WITH SNOWFALL RATES BEING LIGHT TO MODERATE THROUGH MUCH OF TODAY. LOCAL EAST WINDS OF 15 TO 25 MPH WILL CAUSE BLOWING SNOW AND REDUCED VISIBILITIES AT TIMES. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ002-003-190000- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T0000Z/ WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- 1059 AM MST THU DEC 18 2008 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. TOTAL SNOW ACCUMULATIONS OF 5 TO 10 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 10 TO 18 INCHES IN HIGHER ELEVATIONS. IN ADDITION...ARCTIC AIR WILL SPREAD OVER THE AREA TODAY AND TONIGHT. THIS WILL RESULT IN LOCAL BLOWING SNOW AND VERY LOW WIND CHILL VALUES. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ IDZ006-MTZ006-190200- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T1200Z/ SOUTHERN CLEARWATER MOUNTAINS-BITTERROOT/SAPPHIRE MOUNTAINS- 1059 AM MST THU DEC 18 2008 /959 AM PST THU DEC 18 2008/ ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST /4 AM PST/ FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST /4 AM PST/ FRIDAY. SNOW ACCUMULATIONS OF 6 TO 10 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 10 TO 20 INCHES IN THE HIGHER MOUNTAINS BY EARLY FRIDAY MORNING. SNOWFALL RATES WILL BE LIGHT THROUGH THIS AFTERNOON...THEN PICKUP THIS EVENING. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ IDZ005-190000- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T0000Z/ NORTHERN CLEARWATER MOUNTAINS- 959 AM PST THU DEC 18 2008 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON. TOTAL SNOW ACCUMULATIONS OF 10 TO 15 INCHES ARE EXPECTED FROM THE HEADQUARTERS AREA NORTH THROUGH ELK RIVER AND THE CLEARWATER COUNTY LINE. ACCUMULATIONS SOUTH OF HEADQUARTERS WILL GENERALLY RANGE FROM 2 TO 5 INCHES. THIS INCLUDES HIGHWAY 11 TO PIECE AND WEIPPE...AND THE GRANGEMONT ROAD TO OROFINO. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ005-190200- /O.CON.KMSO.WW.Y.0018.081218T2200Z-081219T1800Z/ MISSOULA/BITTERROOT VALLEYS- 1059 AM MST THU DEC 18 2008 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO 11 AM MST FRIDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO 11 AM MST FRIDAY. TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES...LOCALLY UP TO 7 INCHES ON THE BENCHES OF THE MISSOULA AND BITTERROOT VALLEYS BY LATE FRIDAY MORNING. MOST OF THIS ACCUMULATION WILL OCCUR FROM EARLY EVENING THROUGH MIDNIGHT. NORTH WINDS WILL DEVELOP IN THE MISSOULA AND BITTERROOT VALLEYS TONIGHT AND RESULT IN AREAS OF BLOWING SNOW. THE WINDS WILL BECOME EASTERLY AFTER MIDNIGHT WITH LOCAL WHITEOUT CONDITIONS THROUGH HELLGATE CANYON THROUGH EARLY FRIDAY MORNING. THIS WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$
000 WWUS45 KMSO 182153 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 253 PM MST THU DEC 18 2008 .A BAND OF MODERATE TO HEAVY SNOW IS STILL POSITIONED OVER NORTHWEST MONTANA THIS AFTERNOON. THE BAND WILL SLOWLY MAKE ITS WAY SOUTHWARD OVER NORTH CENTRAL IDAHO AND WEST CENTRAL MONTANA TONIGHT INTO FRIDAY MORNING. IN ADDITION...AN ARCTIC AIRMASS WILL BE FILTERING INTO WESTERN MONTANA FROM THE NORTH TONIGHT THROUGH FRIDAY NIGHT. THIS COLD AIRMASS IN COMBINATION WITH AREAS OF GUSTY WINDS WILL CAUSE BLOWING AND DRIFTING SNOW WITH LOW WIND CHILLS. MTZ043-191200- /O.EXB.KMSO.WS.W.0016.081219T0000Z-081220T1200Z/ POTOMAC/SEELEY LAKE REGION- 253 PM MST THU DEC 18 2008 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM MST SATURDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...BLOWING SNOW AND COLD WIND CHILLS...WHICH IS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM MST SATURDAY. SNOW ACCUMULATIONS OF 4 TO 8 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 10 TO 20 INCHES IN THE HIGHER MOUNTAINS BY EARLY FRIDAY MORNING. THEN EASTERLY WINDS 15 TO 25 MPH WILL CAUSE BLOWING SNOW ALONG THE HIGHWAY 200 CORRIDOR FRIDAY. THE EASTERLY WINDS ARE EXPECTED TO CAUSE WIND CHILL READINGS 20 BELOW TO 30 BELOW ZERO THROUGH LATE FRIDAY NIGHT. THESE WINTER WEATHER CONDITIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ007-191200- /O.EXB.KMSO.WS.W.0016.081219T0000Z-081220T1200Z/ BUTTE/BLACKFOOT REGION- 253 PM MST THU DEC 18 2008 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM MST SATURDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...BLOWING SNOW AND COLD WIND CHILLS...WHICH IS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM MST SATURDAY. SNOW ACCUMULATIONS OF 4 TO 8 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 10 TO 20 INCHES IN THE HIGHER MOUNTAINS BY EARLY FRIDAY MORNING...MAINLY NORTH OF BUTTE. THEN EASTERLY WINDS 15 TO 25 MPH WILL CAUSE BLOWING SNOW ALONG THE HIGHWAY 200 AND 12 CORRIDORS FRIDAY. THE EASTERLY WINDS ARE EXPECTED TO CAUSE WIND CHILL READINGS 20 BELOW TO 30 BELOW ZERO IN ALL AREAS BY FRIDAY NIGHT. THESE WINTER WEATHER CONDITIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ001-004-191200- /O.EXT.KMSO.WS.W.0016.000000T0000Z-081219T1200Z/ KOOTENAI/CABINET REGION-LOWER CLARK FORK REGION- 253 PM MST THU DEC 18 2008 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 5 AM MST FRIDAY... THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 5 AM MST FRIDAY. TOTAL STORM SNOW ACCUMULATIONS OF 12 TO 20 INCHES WITH LOCALLY UP TO 36 INCHES BY FRIDAY MORNING. SNOW WILL CONTINUE WITH SNOWFALL RATES BEING LIGHT TO MODERATE THROUGH MUCH OF TONIGHT. LOCAL NORTHEAST TO EAST WINDS OF 15 TO 25 MPH WILL CAUSE BLOWING SNOW AND REDUCED VISIBILITIES AT TIMES. THESE CONDITIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ002-003-191200- /O.EXT.KMSO.WS.W.0016.000000T0000Z-081219T1200Z/ WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- 253 PM MST THU DEC 18 2008 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 5 AM MST FRIDAY... THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 5 AM MST FRIDAY. TOTAL STORM SNOW ACCUMULATIONS OF 6 TO 12 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 12 TO 20 INCHES IN HIGHER ELEVATIONS. IN ADDITION...ARCTIC AIR WILL CONTINUE TO SPREAD OVER THE AREA TONIGHT. COLD AIR COMBINED WITH LOCAL NORTHEAST WINDS OF 15 TO 25 MPH WILL RESULT IN BLOWING SNOW AND DANGEROUS WIND CHILL VALUES OF 20 TO 30 BELOW ZERO...ESPECIALLY THROUGH BAD ROCK CANYON AND THE NORTHERN FLATHEAD VALLEY. THESE WINTER WEATHER CONDITIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ IDZ006-MTZ006-191200- /O.EXT.KMSO.WS.W.0016.000000T0000Z-081219T1800Z/ SOUTHERN CLEARWATER MOUNTAINS-BITTERROOT/SAPPHIRE MOUNTAINS- 253 PM MST THU DEC 18 2008 /153 PM PST THU DEC 18 2008/ ...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 AM MST /10 AM PST/ FRIDAY... THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 11 AM MST /10 AM PST/ FRIDAY. SNOW ACCUMULATIONS OF 6 TO 12 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 12 TO 24 INCHES IN THE HIGHER MOUNTAINS BY LATE FRIDAY MORNING. THESE WINTER WEATHER CONDITIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ IDZ005-191200- /O.EXT.KMSO.WS.W.0016.000000T0000Z-081219T1200Z/ NORTHERN CLEARWATER MOUNTAINS- 153 PM PST THU DEC 18 2008 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 4 AM PST FRIDAY... THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 4 AM PST FRIDAY. TOTAL STORM SNOW ACCUMULATIONS OF 12 TO 18 INCHES ARE EXPECTED FROM THE HEADQUARTERS AREA NORTH THROUGH ELK RIVER AND THE CLEARWATER SHOSHONE COUNTY LINE. ACCUMULATIONS SOUTH OF HEADQUARTERS WILL GENERALLY RANGE FROM 6 TO 12 INCHES. THIS INCLUDES HIGHWAY 11 TO PIERCE AND WEIPPE...AND THE GRANGEMONT ROAD TO OROFINO. THESE WINTER WEATHER CONDITIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ IDZ007-191200- /O.EXB.KMSO.WW.Y.0018.081219T0000Z-081219T1200Z/ OROFINO/GRANGEVILLE REGION- 153 PM PST THU DEC 18 2008 ...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 AM PST FRIDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 AM PST FRIDAY. TOTAL SNOW ACCUMULATIONS OF 3 TO 6 INCHES...LOCALLY UP TO 8 INCHES ON THE BENCHES SOUTH OF GRANGEVILLE ARE EXPECTED BY FRIDAY MORNING. SNOW WILL INCREASE OVER THE AREA LATE THIS AFTERNOON THROUGH TONIGHT AS A COLD FRONT PASSES THE AREA. LOCAL BLOWING SNOW MAY BE SEE OVER THE CAMAS PRAIRIE. THESE WINTER WEATHER CONDITIONS WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ MTZ005-191200- /O.CON.KMSO.WW.Y.0018.081218T2200Z-081219T1800Z/ MISSOULA/BITTERROOT VALLEYS- 253 PM MST THU DEC 18 2008 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST FRIDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST FRIDAY TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES...WITH LOCALLY UP TO 7 INCHES ON THE LOWER SLOPES AND BENCHES OF THE MISSOULA AND BITTERROOT VALLEYS ARE EXPECTED BY LATE FRIDAY MORNING. NORTH TO EAST WINDS WILL DEVELOP IN THE MISSOULA VALLEY AFTER MIDNIGHT TONIGHT...RESULTING IN BLOWING SNOW WITH REDUCED VISIBILITIES ESPECIALLY THROUGH HELLGATE CANYON THROUGH EARLY FRIDAY MORNING. THESE CONDITIONS WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$
000 WWUS45 KMSO 190358 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 858 PM MST THU DEC 18 2008 .A BAND OF MODERATE TO HEAVY SNOW IS STILL POSITIONED OVER NORTHWEST MONTANA AND NOW EXTENDS SOUTHWARD INTO CENTRAL IDAHO THIS EVENING. THE BAND WILL SLOWLY MAKE ITS WAY EASTWARD TONIGHT INTO FRIDAY MORNING. IN ADDITION...AN ARCTIC AIRMASS WILL BE FILTERING INTO WESTERN MONTANA FROM THE NORTH TONIGHT THROUGH FRIDAY NIGHT. THIS COLD AIRMASS IN COMBINATION WITH AREAS OF GUSTY WINDS WILL CAUSE BLOWING AND DRIFTING SNOW WITH LOW WIND CHILLS. MTZ001-004-191200- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T1200Z/ KOOTENAI/CABINET REGION-LOWER CLARK FORK REGION- 858 PM MST THU DEC 18 2008 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY. TOTAL STORM SNOW ACCUMULATIONS OF 12 TO 20 INCHES WITH LOCALLY UP TO 36 INCHES BY FRIDAY MORNING. SNOW WILL CONTINUE WITH SNOWFALL RATES BEING LIGHT TO MODERATE THROUGH MUCH OF TONIGHT. LOCAL NORTHEAST TO EAST WINDS OF 15 TO 25 MPH WILL CAUSE BLOWING SNOW AND REDUCED VISIBILITIES AT TIMES. THESE CONDITIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ002-003-191200- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T1200Z/ WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- 858 PM MST THU DEC 18 2008 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY. TOTAL STORM SNOW ACCUMULATIONS OF 6 TO 12 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 12 TO 20 INCHES IN HIGHER ELEVATIONS. IN ADDITION...ARCTIC AIR WILL CONTINUE TO SPREAD OVER THE AREA TONIGHT. COLD AIR COMBINED WITH LOCAL NORTHEAST WINDS OF 15 TO 25 MPH WILL RESULT IN BLOWING SNOW AND DANGEROUS WIND CHILL VALUES OF 20 TO 30 BELOW ZERO...ESPECIALLY THROUGH BAD ROCK CANYON AND THE NORTHERN FLATHEAD VALLEY. THESE WINTER WEATHER CONDITIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ IDZ006-MTZ006-191200- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T1800Z/ SOUTHERN CLEARWATER MOUNTAINS-BITTERROOT/SAPPHIRE MOUNTAINS- 858 PM MST THU DEC 18 2008 /758 PM PST THU DEC 18 2008/ ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST /10 AM PST/ FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST /10 AM PST/ FRIDAY. SNOW ACCUMULATIONS OF 6 TO 12 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 12 TO 24 INCHES IN THE HIGHER MOUNTAINS BY LATE FRIDAY MORNING. THESE WINTER WEATHER CONDITIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ IDZ005-191200- /O.CON.KMSO.WS.W.0016.000000T0000Z-081219T1200Z/ NORTHERN CLEARWATER MOUNTAINS- 758 PM PST THU DEC 18 2008 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY. TOTAL STORM SNOW ACCUMULATIONS OF 12 TO 18 INCHES ARE EXPECTED FROM THE HEADQUARTERS AREA NORTH THROUGH ELK RIVER AND THE CLEARWATER SHOSHONE COUNTY LINE. ACCUMULATIONS SOUTH OF HEADQUARTERS WILL GENERALLY RANGE FROM 6 TO 12 INCHES. THIS INCLUDES HIGHWAY 11 TO PIERCE AND WEIPPE...AND THE GRANGEMONT ROAD TO OROFINO. THESE WINTER WEATHER CONDITIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ043-191200- /O.CON.KMSO.WS.W.0016.000000T0000Z-081220T1200Z/ POTOMAC/SEELEY LAKE REGION- 858 PM MST THU DEC 18 2008 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY. SNOW ACCUMULATIONS OF 4 TO 8 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 10 TO 20 INCHES IN THE HIGHER MOUNTAINS BY EARLY FRIDAY MORNING. THEN EASTERLY WINDS 15 TO 25 MPH WILL CAUSE BLOWING SNOW ALONG THE HIGHWAY 200 CORRIDOR FRIDAY. THE EASTERLY WINDS ARE EXPECTED TO CAUSE WIND CHILL READINGS 20 BELOW TO 30 BELOW ZERO THROUGH LATE FRIDAY NIGHT. THESE WINTER WEATHER CONDITIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ007-191200- /O.CON.KMSO.WS.W.0016.000000T0000Z-081220T1200Z/ BUTTE/BLACKFOOT REGION- 858 PM MST THU DEC 18 2008 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY. SNOW ACCUMULATIONS OF 4 TO 8 INCHES ARE EXPECTED AT LOWER ELEVATIONS WITH 10 TO 20 INCHES IN THE HIGHER MOUNTAINS BY EARLY FRIDAY MORNING...MAINLY NORTH OF BUTTE. THEN EASTERLY WINDS 15 TO 25 MPH WILL CAUSE BLOWING SNOW ALONG THE HIGHWAY 200 AND 12 CORRIDORS FRIDAY. THE EASTERLY WINDS ARE EXPECTED TO CAUSE WIND CHILL READINGS 20 BELOW TO 30 BELOW ZERO IN ALL AREAS BY FRIDAY NIGHT. THESE WINTER WEATHER CONDITIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ MTZ005-191200- /O.CON.KMSO.WW.Y.0018.000000T0000Z-081219T1800Z/ MISSOULA/BITTERROOT VALLEYS- 858 PM MST THU DEC 18 2008 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST FRIDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST FRIDAY. TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES...WITH LOCALLY UP TO 7 INCHES ON THE LOWER SLOPES AND BENCHES OF THE MISSOULA AND BITTERROOT VALLEYS ARE EXPECTED BY LATE FRIDAY MORNING. NORTH TO EAST WINDS WILL DEVELOP IN THE MISSOULA VALLEY AFTER MIDNIGHT TONIGHT...RESULTING IN BLOWING SNOW WITH REDUCED VISIBILITIES ESPECIALLY THROUGH HELLGATE CANYON THROUGH EARLY FRIDAY MORNING. THESE CONDITIONS WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ IDZ007-191200- /O.CON.KMSO.WW.Y.0018.000000T0000Z-081219T1200Z/ OROFINO/GRANGEVILLE REGION- 758 PM PST THU DEC 18 2008 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY. TOTAL SNOW ACCUMULATIONS OF 3 TO 6 INCHES...LOCALLY UP TO 8 INCHES ON THE BENCHES SOUTH OF GRANGEVILLE ARE EXPECTED BY FRIDAY MORNING. SNOW WILL INCREASE OVER THE AREA LATE THIS AFTERNOON THROUGH TONIGHT AS A COLD FRONT PASSES THE AREA. LOCAL BLOWING SNOW MAY BE SEEN OVER THE CAMAS PRAIRIE. THESE WINTER WEATHER CONDITIONS WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$
000 WWUS45 KMSO 191107 WSWMSO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 407 AM MST FRI DEC 19 2008 .A FRONTAL BAND WILL BE MOVING THROUGH NORTH CENTRAL IDAHO AND WEST CENTRAL MONTANA EARLY THIS MORNING. MOISTURE ASSOCIATED WITH THE FRONT WILL CONTINUE TO PROVIDE STEADY SNOWFALL. THE AIR MASS WILL REMAIN MOIST BUT BECOME INCREASINGLY MORE UNSTABLE FOLLOWING THE FRONT. THUS...SNOW SHOWERS WILL REMAIN IN THE FORECAST. THE WEATHER FOCUS WILL TRANSITION TO COLD-RELATED ISSUES AS ARCTIC AIR SPILLS INTO THE WESTERN MONTANA VALLEYS TODAY AND TONIGHT. IN FACT...WIND CHILL VALUES ARE NASTY IN SOME NORTHWEST MONTANA VALLEYS THIS MORNING. MTZ007-192200- /O.CAN.KMSO.WS.W.0016.000000T0000Z-081220T1200Z/ /O.NEW.KMSO.WC.W.0003.081219T1107Z-081220T1200Z/ BUTTE/BLACKFOOT REGION- 407 AM MST FRI DEC 19 2008 ...WIND CHILL WARNING IN EFFECT UNTIL 5 AM MST SATURDAY... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND CHILL WARNING...WHICH IS IN EFFECT UNTIL 5 AM MST SATURDAY. THE WINTER STORM WARNING HAS BEEN CANCELLED. STEADY SNOWFALL WILL BE ENDING EARLY THIS MORNING WITH THE PASSAGE OF THE COLD FRONT. THEN SCATTERED SNOW SHOWERS...MORE PREDOMINANT OVER MOUNTAINOUS AREAS...WILL DEVELOP TODAY. ADDITIONAL SNOW ACCUMULATIONS OF 1 TO 3 INCHES ARE EXPECTED. THEN NORTHERLY WINDS 10 TO 20 MPH WILL CAUSE WIND CHILL READINGS TO LOWER BETWEEN 20 BELOW TO 30 BELOW ZERO IN ALL AREAS BY TONIGHT. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$ MTZ002-192200- /O.CAN.KMSO.WS.W.0016.000000T0000Z-081219T1200Z/ /O.NEW.KMSO.WC.W.0003.081219T1107Z-081220T1200Z/ WEST GLACIER REGION- 407 AM MST FRI DEC 19 2008 ...WIND CHILL WARNING IN EFFECT UNTIL 5 AM MST SATURDAY... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND CHILL WARNING...WHICH IS IN EFFECT UNTIL 5 AM MST SATURDAY. THE WINTER STORM WARNING HAS BEEN CANCELLED. THE COMBINATION OF NORTHEAST WINDS 15 TO 25 MPH AND FRIGIDLY COLD TEMPERATURES WILL CREATE DANGEROUS WIND CHILL VALUES. WIND CHILL VALUES BETWEEN 20 BELOW AND 30 DEGREES BELOW ZERO CAN BE EXPECTED THROUGH THE TRAVEL CORRIDORS THROUGH THE GAPS OF THE CONTINENTAL DIVIDE WHERE THE CHANNELING OF WINDS IS MOST FAVORED. ALTHOUGH THE ARCTIC AIR WILL REMAIN ENTRENCHED OVER THE WEST GLACIER REGION ON SATURDAY...WINDS ARE EXPECTED TO DIMINISH. SNOW SHOWERS CAN STILL BE EXPECTED THROUGHOUT THE DAY TODAY AS THE AIR MASS DESTABILIZES. SNOWFALL WILL BE MORE LOCALIZED WITH ADDITIONAL SNOW ACCUMULATIONS UP TO AN INCH. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$ MTZ043-192200- /O.CAN.KMSO.WS.W.0016.000000T0000Z-081220T1200Z/ /O.NEW.KMSO.WC.W.0003.081219T1107Z-081220T1200Z/ POTOMAC/SEELEY LAKE REGION- 407 AM MST FRI DEC 19 2008 ...WIND CHILL WARNING IN EFFECT UNTIL 5 AM MST SATURDAY... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND CHILL WARNING...WHICH IS IN EFFECT UNTIL 5 AM MST SATURDAY. THE WINTER STORM WARNING HAS BEEN CANCELLED. STEADY SNOWFALL WILL BE ENDING EARLY THIS MORNING WITH THE PASSAGE OF THE COLD FRONT. THEN SCATTERED SNOW SHOWERS...MORE PREDOMINANT OVER MOUNTAINOUS AREAS...WILL DEVELOP TODAY. ADDITIONAL SNOW ACCUMULATIONS OF 1 TO 3 INCHES ARE EXPECTED. THEN NORTHEAST WINDS 10 TO 20 MPH WITH GUSTS TO 25 MPH WILL CAUSE BLOWING SNOW ALONG THE HIGHWAY 200 CORRIDOR FRIDAY. THESE WINDS ARE ALSO EXPECTED TO CAUSE WIND CHILL READINGS OF 10 BELOW TO 20 BELOW ZERO TODAY...THEN PLUMMETING BETWEEN 20 BELOW TO 30 BELOW ZERO TONIGHT. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$ MTZ003-192200- /O.CAN.KMSO.WS.W.0016.000000T0000Z-081219T1200Z/ /O.NEW.KMSO.WC.Y.0004.081219T1107Z-081220T1200Z/ FLATHEAD/MISSION VALLEYS- 407 AM MST FRI DEC 19 2008 ...WIND CHILL ADVISORY IN EFFECT UNTIL 5 AM MST SATURDAY... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND CHILL ADVISORY...WHICH IS IN EFFECT UNTIL 5 AM MST SATURDAY. THE WINTER STORM WARNING HAS BEEN CANCELLED. THE COMBINATION OF NORTHERLY WINDS 15 TO 25 MPH AND COLD AIR SPILLING INTO THE VALLEYS WILL CREATE WIND CHILL VALUES BETWEEN 10 BELOW AND 20 BELOW ZERO TODAY AND TONIGHT. LOCAL WIND CHILLS MAY DIP AS LOW AS 25 BELOW ZERO IN AREAS WHERE WINDS ARE CHANNELED...LIKE COLUMBIA FALLS SOUTH TO KALISPELL. SNOW SHOWERS CAN STILL BE EXPECTED THROUGHOUT THE DAY TODAY AS THE AIR MASS DESTABILIZES. SNOWFALL WILL BE MORE LOCALIZED WITH ADDITIONAL ACCUMULATIONS GENERALLY LESS THAN AN INCH. A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND GLOVES. $$ IDZ006-MTZ006-191215- /O.CAN.KMSO.WS.W.0016.000000T0000Z-081219T1800Z/ SOUTHERN CLEARWATER MOUNTAINS-BITTERROOT/SAPPHIRE MOUNTAINS- 407 AM MST FRI DEC 19 2008 /307 AM PST FRI DEC 19 2008/ ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER STORM WARNING. STEADY SNOWFALL WILL BE ENDING EARLY THIS MORNING WITH THE PASSAGE OF THE COLD FRONT. THEN SCATTERED SNOW SHOWERS...MORE PREDOMINANT OVER MOUNTAINOUS AREAS...WILL DEVELOP TODAY. ADDITIONAL SNOW ACCUMULATIONS OF 1 TO 3 INCHES ARE EXPECTED. $$ IDZ005-MTZ001-004-191215- /O.CAN.KMSO.WS.W.0016.000000T0000Z-081219T1200Z/ NORTHERN CLEARWATER MOUNTAINS-KOOTENAI/CABINET REGION- LOWER CLARK FORK REGION- 407 AM MST FRI DEC 19 2008 /307 AM PST FRI DEC 19 2008/ ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER STORM WARNING. STEADY SNOWFALL WILL BE TAPERING OFF EARLY THIS MORNING. HOWEVER...SCATTERED SNOW SHOWERS CAN STILL BE EXPECTED DURING THE DAY TODAY. LOCAL ACCUMULATIONS OF AN INCH OR TWO IS POSSIBLE PRIMARILY OVER THE HIGHER TERRAIN. $$ MTZ005-191215- /O.CAN.KMSO.WW.Y.0018.000000T0000Z-081219T1800Z/ MISSOULA/BITTERROOT VALLEYS- 407 AM MST FRI DEC 19 2008 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER WEATHER ADVISORY. STEADY SNOWFALL WILL BE TAPERING OFF EARLY THIS MORNING. HOWEVER...SCATTERED SNOW SHOWERS CAN STILL BE EXPECTED DURING THE DAY TODAY. SNOW ACCUMULATION OF ABOUT AN INCH IS POSSIBLE. $$ IDZ007-191215- /O.CAN.KMSO.WW.Y.0018.000000T0000Z-081219T1200Z/ OROFINO/GRANGEVILLE REGION- 307 AM PST FRI DEC 19 2008 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WINTER WEATHER ADVISORY. STEADY SNOW HAS ENDED THIS MORNING. HOWEVER...SCATTERED SNOW SHOWERS CAN STILL BE EXPECTED DURING THE DAY TODAY. SNOW ACCUMULATION OF ABOUT AN INCH IS POSSIBLE. $$
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 16, 12:00 PM MST, 1 hour 41 minutes earlier.
Area forecast discussion, Dec 16, 12:00 PM MST, 1 hour 41 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
1200 PM MST TUE DEC 16 2008
.UPDATE...INCREASED THE CHANCE FOR PRECIPITATION OVER FLATHEAD LAKE.
&&
.DISCUSSION...LAKE EFFECT SNOW HAS DEVELOPED OVER FLATHEAD LAKE
TODAY. BANDS OF HEAVY SNOW COULD PUT DOWN OVER AN INCH OF SNOW.
&&
.PREV DISCUSSION... /ISSUED 826 AM MST TUE DEC 16 2008/
UPDATE...
MORNING UPDATE ISSUED TO LOWER MAX TEMPERATURE FORECASTS FOR
TODAY. COLD AIR TRAPPED IN VALLEYS WILL BE DIFFICULT TO REMOVE OR
MODERATE FROM CURRENT READINGS. NO OTHER UPDATES PLANNED A THIS TIME.
PREV DISCUSSION... /ISSUED 412 AM MST TUE DEC 16 2008/
DISCUSSION...
TODAY THROUGH THURSDAY...DESPITE EXTREMELY COLD AIR IN PLACE ACROSS
THE REGION THIS MORNING...TEMPERATURES WILL WARM ABOVE ZERO AT MANY
LOCATIONS BY THIS AFTERNOON. A WEAK UPPER LEVEL TROUGH OF LOW
PRESSURE WILL SWING ACROSS THE NORTHERN ROCKIES TODAY...WITH SOME
MID AND HIGH LEVEL CLOUDINESS ANTICIPATED. THE MAIN FOCUS OF THE
SHORT TERM FORECAST IS WEDNESDAY AFTERNOON THROUGH THURSDAY...WHEN
ANOTHER CLOSED AREA OF LOW PRESSURE MOVES INTO THE REGION FROM
CANADA. INITIALLY...SNOW ACCUMULATIONS APPEAR MODEST...WITH MOST SNOW
FOCUSED OVER NORTHWEST MONTANA. HOWEVER...BY WEDNESDAY
EVENING...GUIDANCE DEPICTS THIS CLOSED LOW OVER THE PACIFIC
NORTHWEST COAST...WITH AN IMPRESSIVE FETCH OF MOISTURE FROM THE
PACIFIC OCEAN TO THE NORTHERN ROCKIES. SIMULTANEOUSLY...THIS CLOSED
LOW WILL ENCOURAGE ANOTHER DEEP SURGE OF ARCTIC AIR FROM EAST OF THE
CONTINENTAL DIVIDE. THE RELATIVELY WARM SURGE OF PACIFIC
MOISTURE...COMBINED WITH THE SURGE OF EXTREMELY COLD AIR...WILL
PROMOTE A HIGH POTENTIAL FOR SIGNIFICANT SNOWFALL ACROSS NORTHERN
IDAHO AND NORTHWEST MONTANA. SIMILAR TO THE PREVIOUS FORECAST
ISSUANCE...PRIME TIME FOR SIGNIFICANT SNOW ACCUMULATIONS IS
WEDNESDAY EVENING THROUGH THURSDAY EVENING. CURRENT WINTER WEATHER
HIGHLIGHTS APPEAR TO BE APPROPRIATE AT THIS TIME...AND HAVE
BEEN EXPANDED TO INCLUDE THE MISSOULA AND BITTERROOT VALLEYS.
PLEASE VISIT WEATHER.GOV/MISSOULA FOR ADDITIONAL INFORMATION.
FRIDAY THROUGH MONDAY...VERY FEW CHANGES WERE MADE TO THE OVERALL
FORECAST DURING THIS TIME. PRECIPITATION FROM THE PREVIOUS SYSTEM
WILL LINGER INTO SATURDAY BEFORE A BRIEF DRY PERIOD SATURDAY
NIGHT AS THE NEXT PACIFIC SYSTEM MOVES INTO THE PACIFIC
NORTHWEST ON SUNDAY. THE BIGGEST QUESTION WITH THIS SYSTEM IS
WHETHER OR NOT IT WILL MOVE INTO THE PACIFIC NORTHWEST LIKE THE
PREVIOUS SYSTEM OR WILL IT DIG SOUTHWARD ALONG THE CALIFORNIA
COAST. WILL MONITOR MODEL CONSISTENCIES TO SEE HOW THIS WILL PLAY
OUT NEXT WEEK.
THE BIGGEST FORECAST CHANGE WAS TO LOWER VALLEY MINIMUM TEMPERATURES
ALONG THE CONTINENTAL DIVIDE FRIDAY NIGHT...SATURDAY NIGHT AND
SUNDAY NIGHT. COLD ARCTIC AIR PUSHING SOUTHWARD FROM CANADA WILL
HELP TO PLUMMET TEMPERATURES OVER THE WEEKEND ONCE AGAIN. WITH THE
COLD AND STABLE AIR ESTABLISHED IN MOST VALLEY LOCATIONS...IT WILL
BE DIFFICULT FOR MIXING AND RESULTANT WARMING TO OCCUR.
&&
.AVIATION...A WEAK UPPER LEVEL TROUGH OF LOW PRESSURE WILL MOVE
THROUGH THE REGION DURING THE NEXT 24 HOURS. VFR FLIGHT CONDITIONS
ARE ANTICIPATED TO PREVAIL AT REGION TERMINALS DURING THIS TIME. A
SLIGHT CHANCE OF MOUNTAIN SNOW EXISTS OVER NORTHWEST MONTANA
DURING THE 17/00Z THROUGH 17/12Z PERIOD. OTHERWISE...ONLY SOME MID
AND UPPER LEVEL CLOUDINESS IS ANTICIPATED. SURFACE WINDS WILL BE
QUITE WEAK DURING THE FORECAST PERIOD AS WELL.
&&
.MSO WATCHES/WARNINGS/ADVISORIES...
MT...WINTER STORM WATCH FROM WEDNESDAY AFTERNOON THROUGH THURSDAY
AFTERNOON FOR MISSOULA/BITTERROOT VALLEYS.
WINTER STORM WATCH FROM WEDNESDAY AFTERNOON THROUGH THURSDAY
AFTERNOON FOR FLATHEAD/MISSION VALLEYS-KOOTENAI/CABINET
REGION-LOWER CLARK FORK REGION-POTOMAC/SEELEY LAKE REGION-
WEST GLACIER REGION.
WINTER STORM WATCH FROM WEDNESDAY AFTERNOON THROUGH THURSDAY
AFTERNOON FOR BITTERROOT/SAPPHIRE MOUNTAINS.
ID...WINTER STORM WATCH FROM WEDNESDAY AFTERNOON THROUGH THURSDAY
AFTERNOON FOR NORTHERN CLEARWATER MOUNTAINS-SOUTHERN
CLEARWATER MOUNTAINS.
&&
SHORT TERM...SMITH
PREV DISCUSSION...GIBSON/ZUMPFE/DEROSA
AVIATION...ZUMPFEHazardous weather outlook, Dec 16, 4:29 AM MST, 9 hours 12 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MISSOULA MT 429 AM MST TUE DEC 16 2008 IDZ005-006-MTZ001>006-043-171130- NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS- KOOTENAI/CABINET REGION-WEST GLACIER REGION- FLATHEAD/MISSION VALLEYS-LOWER CLARK FORK REGION- MISSOULA/BITTERROOT VALLEYS-BITTERROOT/SAPPHIRE MOUNTAINS- POTOMAC/SEELEY LAKE REGION- 429 AM MST TUE DEC 16 2008 /329 AM PST TUE DEC 16 2008/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL IDAHO...NORTHWEST MONTANA AND WEST CENTRAL MONTANA. FOR THE LATEST INFORMATION ON WATCHES...WARNINGS AND ADVISORIES...GO TO WEATHER.GOV/MISSOULA. .DAY ONE...TODAY AND TONIGHT A VERY COLD AIR MASS CONTINUES TO HOVER OVER WESTERN MONTANA AND CENTRAL IDAHO...WITH TEMPERATURES WELL BELOW THE SEASONAL AVERAGE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY COLD TEMPERATURES WILL REMAIN IN PLACE THROUGHOUT THIS WEEK. ANOTHER COLD STORM SYSTEM WILL SPREAD SNOW INTO THE AREA WEDNESDAY THROUGH FRIDAY. MODERATE TO HEAVY SNOW IS POSSIBLE WEDNESDAY NIGHT INTO THURSDAY WITH GUSTY EAST AND NORTHEAST WINDS DEVELOPING. DANGEROUS WINTER WEATHER CONDITIONS ARE POSSIBLE IN THIS TIME FRAME. THE CONTINUATION OF COLD TEMPERATURES WILL RESULT IN FREEZING OF AREA RIVERS AND STREAMS...RESULTING IN AN INCREASED THREAT OF ICE JAMS. FLOODING IS POSSIBLE WHEN ICE JAMS BREAK OR SPREAD OUT OF RIVER BANKS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. IDZ007>010-MTZ007-171130- OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION- WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY-BUTTE/BLACKFOOT REGION- 429 AM MST TUE DEC 16 2008 /329 AM PST TUE DEC 16 2008/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL IDAHO AND WEST CENTRAL MONTANA. .DAY ONE...TODAY AND TONIGHT A VERY COLD AIR MASS CONTINUES TO HOVER OVER WESTERN MONTANA AND CENTRAL IDAHO...WITH TEMPERATURES WELL BELOW THE SEASONAL AVERAGE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY COLD TEMPERATURES WILL REMAIN IN PLACE THROUGHOUT THIS WEEK. ANOTHER COLD STORM SYSTEM WILL BEGIN TO SPREAD SNOW INTO THE AREA EARLY THURSDAY THROUGH FRIDAY. MODERATE SNOW ACCUMULATIONS ARE POSSIBLE MAINLY OVER HIGHER TERRAIN LATE THURSDAY INTO EARLY FRIDAY WITH GUSTY NORTH TO EAST WINDS DEVELOPING FRIDAY. DANGEROUS WINTER WEATHER CONDITIONS ARE POSSIBLE IN THIS TIME FRAME. THE CONTINUATION OF COLD TEMPERATURES WILL RESULT IN FREEZING OF AREA RIVERS AND STREAMS...RESULTING IN AN INCREASED THREAT OF ICE JAMS. FLOODING IS POSSIBLE WHEN ICE JAMS BREAK OR SPREAD OUT OF RIVER BANKS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
Nearby
Winter Storm Warnings in Montana, 2008Winter Storm Warnings in Idaho, 2008Every winter storm warning in 2008
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.