Alert archive / Washington / Winter Storm Warnings in 2021
Winter Storm Warning 12, NWS Spokane, WA
NWS Spokane, WA issued this winter storm warning at Dec 10, 2021, 2:44 AM PST for 7 counties in Washington; 6 counties in Idaho. It took effect at Dec 10, 2021, 6:00 PM PST. It was in force for 40 hr. 38 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 10, 2021, 2:44 AM PST (10:44 UTC)
- In effect from
- Dec 10, 2021, 6:00 PM PST
- Expired
- Dec 12, 2021, 10:00 AM PST
- In force
- 40 hr
- Issued by
- NWS Spokane, WA
Counties Benewah County, ID, Bonner County, ID, Boundary County, ID, Kootenai County, ID, Latah County, ID, Shoshone County, ID, Asotin County, WA, Chelan County, WA, Garfield County, WA, Okanogan County, WA, Pend Oreille County, WA, Spokane County, WA, Stevens County, WA
The radar
The Spokane radar (KOTX), 14 km from the middle of the area, began a volume at 10:44 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 11, 6:00 AM PST | SNOW 2.5 | 3 S Diamond Lake, WA | COCORAHS STATION WA-PO-1 5.6 NE ELK. |
| Dec 11, 6:53 AM PST | SNOW 1.2 | 2 Nnw Evans, WA | COCORAHS STATION WA-ST-11 2 NNW EVANS. |
| Dec 11, 7:00 AM PST | SNOW 0.2 | 3 Wsw Clayton, WA | COCORAHS STATION WA-ST-1 2.6 SW CLAYTON. |
| Dec 11, 7:00 AM PST | SNOW 0.2 | 5 Nnw Ardenvoir, WA | COCORAHS STATION WA-CH-22 12.2 NW ENTIAT. |
| Dec 11, 7:00 AM PST | SNOW 0.5 | 3 Ne Onaway, ID | CO-OP OBSERVER STATION PTLI1 2.7 NE ONAWAY. |
| Dec 11, 7:00 AM PST | SNOW 0.5 | 4 E Laclede, ID | COCORAHS STATION ID-BR-33 DOVER 6.4 SW. |
| Dec 11, 7:00 AM PST | SNOW 0.5 | 5 Sw Northport, WA | CO-OP OBSERVER STATION NHPW1 5.0 SW NORTHPORT. |
| Dec 11, 7:00 AM PST | SNOW 1.1 | 9 W Twisp, WA | COCORAHS STATION WA-OK-34 TWISP 9.3 W. |
| Dec 11, 7:00 AM PST | SNOW 1.9 | Leavenworth, WA | COCORAHS STATION WA-CH-50 LEAVENWORTH 0.4 W. |
| Dec 11, 7:00 AM PST | SNOW 2 | 9 N Metaline Falls, WA | CO-OP OBSERVER STATION BDDW1 9.1 N METALINE FALLS. |
| Dec 11, 7:00 AM PST | SNOW 4.5 | 6 Ese Mazama, WA | COCORAHS STATION WA-OK-16 6.8 NNW WINTHROP. |
| Dec 11, 7:00 AM PST | SNOW 7 | 1 Nnw Plain, WA | COCORAHS STATION WA-CH-33 12.4 N LEAVENWORTH. |
| Dec 11, 7:30 AM PST | SNOW 1 | Bonners Ferry, ID | MESONET STATION BONI1 BONNERS FERRY. |
| Dec 11, 7:35 AM PST | SNOW 1.8 | 4 Sw Hope, ID | COCORAHS STATION ID-BR-28 4.4 SW HOPE. |
| Dec 11, 8:00 AM PST | SNOW 0.8 | 1 Ene Athol, ID | COCORAHS STATION ID-KT-3 1.5 ENE ATHOL. |
| Dec 11, 8:00 AM PST | SNOW 0.8 | 4 Ene Laclede, ID | COCORAHS STATION ID-BR-14 6.2 WSW SAGLE. |
| Dec 11, 8:00 AM PST | SNOW 1.4 | 1 Ese Kellogg, ID | CO-OP OBSERVER STATION KLGI1 KELLOGG. |
| Dec 11, 8:00 AM PST | SNOW 1.5 | 2 S Anatone, WA | COCORAHS STATION WA-AS-4 ANATONE 2.3 S. |
| Dec 11, 8:00 AM PST | SNOW 4 | Spirit Lake, ID | OBSERVATION SHARED WITH PICTURE VIA SOCIAL MEDIA. |
| Dec 11, 8:00 AM PST | SNOW 4.7 | 5 Ene Colburn, ID | COCORAHS STATION ID-BR-29 SANDPOINT 10.3 NNE. |
| Dec 11, 8:00 AM PST | SNOW 5 | 9 Se Elmira, ID | COCORAHS STATION ID-BR-27 13.9 NE SANDPOINT. |
| Dec 11, 8:00 AM PST | SNOW 7 | 12 Nnw Lucerne, WA | CO-OP OBSERVER STATION STEW1 STEHEKIN COOP. |
| Dec 11, 8:00 AM PST | SNOW 10.5 | 9 W Lucerne, WA | CO-OP OBSERVER STATION HLDW1 8.6 W LUCERNE. |
| Dec 11, 8:20 AM PST | SNOW 2.5 | 7 Wsw Tiger, WA | TRAINED SPOTTER REPORTS 2.5 OF SNOW. NOT SNOWING NOW. VERY WINDY. POWER IS OUT. |
| Dec 11, 8:30 AM PST | SNOW 8.5 | 3 Nne Winton, WA | SINCE 1400 11 DEC, TRAINED SPOTTER MEASURED 8.5 OF NEW SNOW. AT 0830 12 DEC, STILL SNOWING AT 33ð. |
| Dec 11, 8:30 AM PST | SNOW 8.5 | 3 Nne Winton, WA | SINCE 1400 11 DEC, TRAINED SPOTTER MEASURED 8.5 OF NEW SNOW. AT 0830 12 DEC, STILL SNOWING AT 33ÃÃð. |
| Dec 11, 8:40 AM PST | SNOW 2 | 1 N Sandpoint, ID | CO-OP OBSERVER STATION SPTI1 0.8 N SANDPOINT. |
| Dec 11, 9:00 AM PST | SNOW 1.4 | 1 Ese Kellogg, ID | CO-OP OBSERVER STATION KLGI1 KELLOGG. |
| Dec 11, 9:00 AM PST | SNOW 1.9 | Avery, ID | COCORAHS STATION ID-SH-2 0.1 S AVERY. |
| Dec 11, 9:00 AM PST | SNOW 3 | 8 W Meadow Creek, ID | REPORT PROVIDED THROUGH SOCIAL MEDIA. 3 INCHES OF SLOPPY WET SNOW. LOCATION ESTIMATED. |
| Dec 11, 9:00 AM PST | SNOW 8.3 | 2 Nw Mazama, WA | CO-OP OBSERVER STATION MZAW1 1.6 NW MAZAMA. |
| Dec 11, 9:34 AM PST | SNOW 3 | 2 Ssw Leavenworth, WA | SNOW TRANSITION TO RAIN OVER THE LAST 30 MINUTES THEN STOPPED IN THE LAST 10 MINUTES. |
| Dec 11, 9:38 AM PST | SNOW 14 | 3 Nw Winton, WA | SECOND HAND REPORT FROM PUBLIC OF AN ESTIMATED 14 INCHES OF NEW SNOW AT THE REST STOP WEST OF COLES CORNER ALONG HWY2. |
| Dec 11, 10:00 AM PST | SNOW 4 | Clark Fork, ID | REPORT PROVIDED VIA SOCIAL MEDIA. LOCATION ESTIMATED. |
| Dec 11, 10:00 AM PST | SNOW 8 | 1 Nw Plain, WA | REPORT PROVIDED VIA SOCIAL MEDIA. 8 INCHES OVERNIGHT AND STILL SNOWING HARD AT TIME OF OBSERVATION. |
| Dec 11, 10:15 AM PST | SNOW 5.5 | 6 Se Elmira, ID | ELEVATION 2955 FEET MSL. STILL SNOWING WITH 34 DEGREE TEMPERATURE. |
| Dec 11, 3:32 PM PST | SNOW 1 | Winthrop, WA | CO-OP OBSERVER STATION WNPW1 WINTHROP. |
| Dec 12, 8:46 AM PST | SNOW 5 | 4 Se Viola, ID | SNOW STARTED ACCUMULATING SOME TIME BEFORE 4AM AND STOPPED NEAR 845AM. |
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 00:00Z, 10.7 hours before the alert went out and 78 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
- 756 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
190 WWUS46 KOTX 101044 WSWOTX URGENT - WINTER WEATHER MESSAGE National Weather Service Spokane WA 244 AM PST Fri Dec 10 2021 ...HEAVY SNOW FRIDAY EVENING THROUGH EARLY SUNDAY MORNING... .A winter storm will spread snow into the Cascades Friday afternoon...with snow becoming heavy Friday evening through early Sunday morning across Northern Washington and North Idaho. Travel will be very difficult over Stevens Pass and Lookout Pass during this winter storm. Snow is expected to decrease early Sunday. WAZ047>049-102300- /O.UPG.KOTX.WS.A.0007.211211T0600Z-211212T0600Z/ /O.NEW.KOTX.WS.W.0012.211211T0200Z-211212T1200Z/ Central Chelan County-Western Chelan County-Western Okanogan County- Including the cities of Mazama, Winthrop, Plain, Leavenworth, Methow, Holden Village, Twisp, Loup Loup Pass, Stehekin, Conconully, and Stevens Pass 244 AM PST Fri Dec 10 2021 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 4 AM PST SUNDAY... * WHAT...Heavy snow expected. Total snow accumulations between 3 and 7 inches in the valleys and 10 to 20 inches possible in the mountains. Winds gusting as high as 40 mph. * WHERE...Mazama, Winthrop, Plain, Leavenworth, Holden Village, Twisp, Loup Loup Pass, Stehekin and Stevens Pass. * WHEN...From 6 PM this evening to 4 AM PST Sunday. * IMPACTS...Heavy snow for Friday night through Saturday night could result in very difficult to impossible travel conditions. Travel over Stevens Pass is not advised during this period of heavy snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Monitor the latest forecasts for updates on this situation. && $$ WAZ037-102300- /O.EXB.KOTX.WS.A.0007.211211T1800Z-211212T0000Z/ Northeast Mountains- Including the cities of Chewelah, Colville, Northport, Flowery Trail Road, Orin-Rice Road, Newport, Deer Park, Springdale-Hunters Road, and Kettle Falls 244 AM PST Fri Dec 10 2021 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations 2 to 4 inches possible in the valleys...with up to 7 inches towards the Idaho border. 7 to 12 inches is possible in the mountains. Winds will be gusty, especially over higher terrain. * WHERE...Chewelah, Colville, Northport, Flowery Trail Road, Orin-Rice Road, Newport, Deer Park, Springdale-Hunters Road, and Kettle Falls. * WHEN...From Saturday morning through Saturday afternoon. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ IDZ001-004-102300- /O.EXT.KOTX.WS.A.0007.211211T0600Z-211212T1200Z/ Northern Panhandle-Central Panhandle Mountains- Including the cities of Fourth Of July Pass, Eastport, Sandpoint, Wallace, Osburn, Dobson Pass, Bonners Ferry, Mullan, Athol, Kellogg, St. Maries, Fernwood, Lookout Pass, Pinehurst, Schweitzer Mountain Road, and Priest River 244 AM PST Fri Dec 10 2021 ...WINTER STORM WATCH NOW IN EFFECT FROM THIS EVENING THROUGH LATE SATURDAY NIGHT... * WHAT...Heavy snow possible. Total snow accumulations between 4 and 8 inches in the valleys and 10 and 20 inches possible in the mountains. Temperatures will warm Saturday afternoon with snow changing to rain in many of the valleys. The mountains will remain snowing. Winds will be gusty, especially over the higher terrain. * WHERE...Fourth Of July Pass, Eastport, Sandpoint, Wallace, Osburn, Dobson Pass, Bonners Ferry, Mullan, Athol, Spirit Lake, Kellogg, St. Maries, Fernwood, Lookout Pass, Pinehurst, Schweitzer Mountain Road, and Priest River. * WHEN...From this evening through late Saturday night. * IMPACTS...Travel could be very difficult this evening through Saturday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ LN
7 follow-up statements
346 WWUS46 KOTX 102231 WSWOTX URGENT - WINTER WEATHER MESSAGE National Weather Service Spokane WA 231 PM PST Fri Dec 10 2021 ...HEAVY SNOW FRIDAY EVENING THROUGH EARLY SUNDAY MORNING... .A winter storm will spread increasing snow into the region through Saturday morning...with snow becoming heavy Friday evening through early Sunday morning across the Cascades, far NE Washington, and North Idaho. Travel will be very difficult over Stevens Pass and Lookout Pass during this winter storm. Snow is expected to decrease early Sunday. IDZ001-004-111415- /O.UPG.KOTX.WS.A.0007.211211T0600Z-211212T1200Z/ /O.EXB.KOTX.WS.W.0012.211211T0600Z-211212T1200Z/ Northern Panhandle-Central Panhandle Mountains- Including the cities of Fourth Of July Pass, Eastport, Sandpoint, Wallace, Osburn, Dobson Pass, Bonners Ferry, Mullan, Athol, Kellogg, St. Maries, Fernwood, Lookout Pass, Pinehurst, Schweitzer Mountain Road, and Priest River 231 PM PST Fri Dec 10 2021 ...WINTER STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO 4 AM PST SUNDAY... * WHAT...Heavy snow expected. Drifting and blowing snow in the mountains. Total snow accumulations 4 to 8 inches valleys Friday night into Saturday morning and in the mountains 1 to 2 FEET through Sunday morning. Winds gusting as high as 45 mph. * WHERE...Fourth Of July Pass, Eastport, Sandpoint, Wallace, Osburn, Dobson Pass, Bonners Ferry, Mullan, Athol, Kellogg, St. Maries, Fernwood, Lookout Pass, Pinehurst, Schweitzer Mountain Road, and Priest River. * WHEN...From 10 PM this evening to 4 AM PST Sunday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...Valley accumulations will be through Saturday morning as temperatures warm above freezing by Saturday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WAZ037-111415- /O.UPG.KOTX.WS.A.0007.211211T1800Z-211212T0000Z/ /O.EXB.KOTX.WS.W.0012.211211T0600Z-211211T2000Z/ Northeast Mountains- Including the cities of Chewelah, Colville, Northport, Flowery Trail Road, Orin-Rice Road, Newport, Deer Park, Springdale-Hunters Road, and Kettle Falls 231 PM PST Fri Dec 10 2021 ...WINTER STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO NOON PST SATURDAY... * WHAT...Heavy snow expected. Drifting and blowing snow in the mountains. Total snow accumulations of 2 to 6 inches in the valleys and 10 to 16 inches in the mountains. Winds gusting as high as 50 mph. * WHERE...Chewelah, Colville, Northport, Flowery Trail Road, Orin-Rice Road, Newport, Deer Park, Springdale-Hunters Road, and Kettle Falls. * WHEN...From 10 PM this evening to Noon PST Saturday. * IMPACTS...Travel could be very difficult. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WAZ031-111415- /O.EXB.KOTX.WS.W.0012.211211T0600Z-211212T1200Z/ Northeast Blue Mountains- Including the cities of Cloverland Road 231 PM PST Fri Dec 10 2021 ...WINTER STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO 4 AM PST SUNDAY... * WHAT...Heavy snow expected. Blowing and drifting snow. Total snow accumulation 12 to 18 inches. Winds gusting as high as 55 mph. * WHERE...Cloverland Road. * WHEN...From 10 PM this evening to 4 AM PST Sunday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WAZ047>049-111415- /O.CON.KOTX.WS.W.0012.211211T0200Z-211212T1200Z/ Central Chelan County-Western Chelan County-Western Okanogan County- Including the cities of Mazama, Winthrop, Plain, Leavenworth, Methow, Holden Village, Twisp, Loup Loup Pass, Stehekin, Conconully, and Stevens Pass 231 PM PST Fri Dec 10 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 4 AM PST SUNDAY... * WHAT...Heavy snow expected. Total snow accumulations between 3 and 7 inches in the valleys except 8 to 14 inches Stehekin and Mazama areas. In the mountains 2 to 3 FEET along the Cascade crest. 2 to 6 inches for Loup Loup and Blewett Pass areas. Winds gusting as high as 40 mph with local blowing and drifting snow in the mountains. * WHERE...Mazama, Winthrop, Plain, Leavenworth, Methow, Holden Village, Twisp, Loup Loup Pass, Stehekin, Conconully, and Stevens Pass. * WHEN...From 6 PM this evening to 4 AM PST Sunday. * IMPACTS...Travel could be very challenging especially over the Cascade passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ003-111415- /O.NEW.KOTX.WW.Y.0039.211211T0600Z-211211T1800Z/ Idaho Palouse- Including the cities of Potlatch, Moscow, Plummer, and Genesee 231 PM PST Fri Dec 10 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST SATURDAY... * WHAT...Snow expected. Total snow accumulations between 2 and 5 inches. Winds gusting as high as 40 mph with local drifting snow. * WHERE...Potlatch, Moscow, Plummer, and Genesee. * WHEN...From 10 PM this evening to 10 AM PST Saturday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ JW
581 WWUS46 KOTX 111201 WSWOTX URGENT - WINTER WEATHER MESSAGE National Weather Service Spokane WA 401 AM PST Sat Dec 11 2021 ...HEAVY MOUNTAIN SNOW THROUGH EARLY SUNDAY MORNING... .A winter storm will bring moderate to heavy snow to the Cascades, far NE Washington, and North Idaho. Travel will be very difficult over Stevens Pass and Lookout Pass during this winter storm. Snow is expected to decrease early Sunday. IDZ001-004-111830- /O.CON.KOTX.WS.W.0012.000000T0000Z-211212T1200Z/ Northern Panhandle-Central Panhandle Mountains- Including the cities of Fourth Of July Pass, Eastport, Sandpoint, Wallace, Osburn, Dobson Pass, Bonners Ferry, Mullan, Athol, Kellogg, St. Maries, Fernwood, Lookout Pass, Pinehurst, Schweitzer Mountain Road, and Priest River 401 AM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST SUNDAY... * WHAT...Heavy snow. Winds gusting as high as 45 mph. Drifting and blowing snow in the mountains. Additional snow accumulations of 1 to 3 inches in the valleys and 10 to 20 inches in the mountains above 3000 feet. * WHERE...Fourth Of July Pass, Eastport, Wallace, Osburn, Dobson Pass, Mullan, Kellogg, St. Maries, Fernwood, Lookout Pass, Pinehurst, Schweitzer Mountain Road, and Priest River. * WHEN...Until 4 AM PST Sunday. * IMPACTS...Travel could be very difficult in the mountains. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WAZ031-111830- /O.CON.KOTX.WS.W.0012.000000T0000Z-211212T1200Z/ Northeast Blue Mountains- Including the cities of Cloverland Road 401 AM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST SUNDAY... * WHAT...Heavy snow. Additional snow accumulations between 8 and 15 inches mainly above 4000 feet. Winds gusting as high as 55 mph. Blowing and drifting snow. * WHERE...Cloverland Road. * WHEN...Until 4 AM PST Sunday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WAZ037-111830- /O.CON.KOTX.WS.W.0012.000000T0000Z-211211T2000Z/ Northeast Mountains- Including the cities of Chewelah, Colville, Northport, Flowery Trail Road, Orin-Rice Road, Newport, Deer Park, Springdale-Hunters Road, and Kettle Falls 401 AM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST TODAY... * WHAT...Heavy snow. Additional snow accumulations of less than 1 inch in the valleys. 5 to 10 inches in the mountains above 3500 feet. Winds gusting as high as 45 mph. Drifting and blowing snow in the mountains. * WHERE...Flowery Trail Road, Orin-Rice Road, Springdale-Hunters Road. * WHEN...Until Noon PST today. * IMPACTS...Travel could be difficult. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WAZ047>049-111830- /O.CON.KOTX.WS.W.0012.000000T0000Z-211212T1200Z/ Central Chelan County-Western Chelan County-Western Okanogan County- Including the cities of Mazama, Winthrop, Plain, Leavenworth, Methow, Holden Village, Twisp, Loup Loup Pass, Stehekin, Conconully, and Stevens Pass 401 AM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST SUNDAY... * WHAT...Heavy snow. Additional snow accumulations of half an inch to 2 inches in the valleys except 3 to 6 inches Stehekin and Mazama areas. In the mountains above 4000 feet an additional 6 to 12 inches...with up to 20 inches along the crest and at Stevens Pass. Winds gusting as high as 45 mph. Drifting and blowing snow in the mountains. * WHERE...Mazama, Plain, Holden Village, Loup Loup Pass, Stehekin, and Stevens Pass. * WHEN...Until 4 AM PST Sunday. * IMPACTS...Travel could be very challenging especially over the Stevens Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ003-111800- /O.CON.KOTX.WW.Y.0039.000000T0000Z-211211T1800Z/ Idaho Palouse- Including the cities of Potlatch, Moscow, Plummer, and Genesee 401 AM PST Sat Dec 11 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... * WHAT...Snow...mixed at times with rain. Additional snow accumulations of half an inch to 2 inches in the lower elevations. Above 3000 feet additional accumulations of 3 to 5 inches. Winds gusting as high as 40 mph with local drifting snow. * WHERE...Potlatch and Plummer. * WHEN...Until 10 AM PST this morning. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ LN
723 WWUS46 KOTX 111719 WSWOTX URGENT - WINTER WEATHER MESSAGE National Weather Service Spokane WA 919 AM PST Sat Dec 11 2021 WAZ037-111830- /O.CAN.KOTX.WS.W.0012.000000T0000Z-211211T2000Z/ Northeast Mountains- Including the cities of Chewelah, Colville, Northport, Flowery Trail Road, Orin-Rice Road, Newport, Deer Park, Springdale-Hunters Road, and Kettle Falls 919 AM PST Sat Dec 11 2021 ...WINTER STORM WARNING IS CANCELLED... Little to no additional accumulations are expected in the valleys with up to 2 inches of additional accumulation in the mountains through the afternoon. $$ IDZ003-111830- /O.CAN.KOTX.WW.Y.0039.000000T0000Z-211211T1800Z/ Idaho Palouse- Including the cities of Potlatch, Moscow, Plummer, and Genesee 919 AM PST Sat Dec 11 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Wet snow will continue this morning mainly above 2500 feet with little to no additional accumulations expected as temperatures climb to above freezing. $$ IDZ001-004-120130- /O.CON.KOTX.WS.W.0012.000000T0000Z-211212T1200Z/ Northern Panhandle-Central Panhandle Mountains- Including the cities of Lookout Pass, Eastport, Dobson Pass, Schweitzer Mountain Road, and Mullan 919 AM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST SUNDAY ABOVE 3000 FEET... * WHAT...Heavy snow. Winds gusting as high as 45 mph. Drifting and blowing snow in the mountains. Additional snow accumulations 8 to 16 inches above 3000 feet with little to no additional accumulations in the valleys. * WHERE...Lookout Pass, Eastport, Dobson Pass, Schweitzer Mountain Road, and Mullan. * WHEN...Until 4 AM PST Sunday. * IMPACTS...Travel could be very difficult in the mountains including Lookout Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WAZ031-120130- /O.CON.KOTX.WS.W.0012.000000T0000Z-211212T1200Z/ Northeast Blue Mountains- Including the cities of Cloverland Road 919 AM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST SUNDAY... * WHAT...Heavy snow. Additional snow accumulations between 6 and 13 inches mainly above 4000 feet. Winds gusting as high as 55 mph. Blowing and drifting snow. * WHERE...Cloverland Road. * WHEN...Until 4 AM PST Sunday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WAZ047>049-120130- /O.CON.KOTX.WS.W.0012.000000T0000Z-211212T1200Z/ Central Chelan County-Western Chelan County-Western Okanogan County- Including the cities of Holden Village, Stehekin, Mazama, and Stevens Pass 919 AM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST SUNDAY... * WHAT...Heavy snow. Additional valley accumulations up to 2 inches. In the mountains an additional 8 to 15 inches near the Cascade crest. Lighter snow amounts away from the crest with up to 3 inches Loup Loup and Blewett Passes. Winds gusting as high as 45 mph. Drifting and blowing snow in the mountains. * WHERE...Holden Village, Stehekin, Mazama, and Stevens Pass. * WHEN...Until 4 AM PST Sunday. * IMPACTS...Travel could be very challenging especially over the Stevens Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Monitor the latest forecasts for updates on this situation. && $$ JW
117 WWUS46 KOTX 112126 WSWOTX URGENT - WINTER WEATHER MESSAGE National Weather Service Spokane WA 126 PM PST Sat Dec 11 2021 WAZ047-049-112230- /O.CAN.KOTX.WS.W.0012.000000T0000Z-211212T1200Z/ Central Chelan County-Western Okanogan County- 126 PM PST Sat Dec 11 2021 ...WINTER STORM WARNING IS CANCELLED... $$ IDZ001-004-121200- /O.EXT.KOTX.WS.W.0012.000000T0000Z-211212T1800Z/ Northern Panhandle-Central Panhandle Mountains- Including the cities of Lookout Pass, Eastport, Dobson Pass, Schweitzer Mountain Road, and Mullan 126 PM PST Sat Dec 11 2021 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 10 AM PST SUNDAY ABOVE 3000 FEET... * WHAT...Heavy snow. Winds gusting as high as 45 mph. Drifting and blowing snow in the mountains. Additional snow accumulations 6 to 12 inches in the mountains. * WHERE...Lookout Pass, Dobson Pass, Schweitzer Mountain Road, and Mullan. * WHEN...Until 10 AM PST Sunday. * IMPACTS...Travel could be very difficult in the mountains including Lookout Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WAZ031-121200- /O.CON.KOTX.WS.W.0012.000000T0000Z-211212T1200Z/ Northeast Blue Mountains- Including the cities of Cloverland Road 126 PM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST SUNDAY... * WHAT...Heavy snow. Additional snow accumulations between 4 and 8 inches mainly above 4000 feet. Winds gusting as high as 55 mph. Blowing and drifting snow. * WHERE...Cloverland Road. * WHEN...Until 4 AM PST Sunday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WAZ048-121200- /O.CON.KOTX.WS.W.0012.000000T0000Z-211212T1200Z/ Western Chelan County- Including the cities of Holden Village, Stehekin, and Stevens Pass 126 PM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST SUNDAY... * WHAT...Heavy snow. Additional snow accumulations between 4 and 10 inches. Winds gusting as high as 40 mph. * WHERE...Holden Village, Stehekin, and Stevens Pass. * WHEN...Until 4 AM PST Sunday. * IMPACTS...Travel could be very challenging especially over Stevens Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Monitor the latest forecasts for updates on this situation. && $$ JW
613 WWUS46 KOTX 120346 WSWOTX URGENT - WINTER WEATHER MESSAGE National Weather Service Spokane WA 746 PM PST Sat Dec 11 2021 WAZ031-120500- /O.CAN.KOTX.WS.W.0012.000000T0000Z-211212T1200Z/ Northeast Blue Mountains- Including the cities of Cloverland Road 746 PM PST Sat Dec 11 2021 ...WINTER STORM WARNING IS CANCELLED... The snow forecast has been decreased for the remainder of the night into Sunday morning. An additional 3 to 5 inches are expected from 8 PM Saturday to 10 AM Sunday above 4000 feet. $$ IDZ001-004-121315- /O.CON.KOTX.WS.W.0012.000000T0000Z-211212T1800Z/ Northern Panhandle-Central Panhandle Mountains- Including the cities of Lookout Pass, Eastport, Dobson Pass, Schweitzer Mountain Road, and Mullan 746 PM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST SUNDAY ABOVE 3000 FEET... * WHAT...Heavy snow. Additional snow accumulations between 4 and 8 inches for the mountains around Sandpoint and Bonners Ferry. Additional snow accumulations of 8 to 12 inches for the mountains around Kellogg, Mullan, and Clarkia. * WHERE...Lookout Pass, Eastport, Dobson Pass, Schweitzer Mountain Road, and Mullan. * WHEN...Until 10 AM PST Sunday. * IMPACTS...Lookout Pass at an elevation near 4700 feet on Interstate 90 will receive periods of moderate to heavy snow through Sunday morning. Motorists should be prepared for winter driving conditions on I-90 near the Idaho and Montana border. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WAZ048-121200- /O.CON.KOTX.WS.W.0012.000000T0000Z-211212T1200Z/ Western Chelan County- Including the cities of Holden Village, Stehekin, and Stevens Pass 746 PM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST SUNDAY... * WHAT...Heavy snow. Additional snow accumulations between 3 and 6 inches between 8 PM Saturday and 4 AM Sunday. * WHERE...Holden Village, Stehekin, and Stevens Pass. * WHEN...Until 4 AM PST Sunday. * IMPACTS...Stevens Pass on U.S. 2 will receive periods of moderate to heavy snow through the night. Motorists should be prepared for winter driving conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ GKOCH
013 WWUS46 KOTX 121159 WSWOTX URGENT - WINTER WEATHER MESSAGE National Weather Service Spokane WA 359 AM PST Sun Dec 12 2021 IDZ001-121300- /O.CAN.KOTX.WS.W.0012.000000T0000Z-211212T1800Z/ Northern Panhandle- 359 AM PST Sun Dec 12 2021 ...WINTER STORM WARNING IS CANCELLED... The threat of widespread significant snow has ended for the day. $$ WAZ048-121300- /O.EXP.KOTX.WS.W.0012.000000T0000Z-211212T1200Z/ Western Chelan County- Including the cities of Holden Village, Stehekin, and Stevens Pass 359 AM PST Sun Dec 12 2021 ...WINTER STORM WARNING WILL EXPIRE AT 4 AM PST EARLY THIS MORNING... The threat of widespread significant snow has ended for the day however occasional light snow will continue at times near the Cascade Crest. $$ IDZ004-121800- /O.CON.KOTX.WS.W.0012.000000T0000Z-211212T1800Z/ Central Panhandle Mountains- Including the cities of Lookout Pass, Dobson Pass, and Mullan 359 AM PST Sun Dec 12 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... * WHAT...Heavy snow. Additional snow accumulations between 1 and 3 inches. * WHERE...Lookout Pass, Dobson Pass, and Mullan. * WHEN...Until 10 AM PST this morning. * IMPACTS...Lookout Pass at an elevation near 4700 feet on Interstate 90 will receive periods of moderate to heavy snow through the morning. Motorists should be prepared for winter driving conditions on I-90 near the Idaho and Montana border. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ FX
659 WWUS46 KOTX 121754 WSWOTX URGENT - WINTER WEATHER MESSAGE National Weather Service Spokane WA 954 AM PST Sun Dec 12 2021 IDZ004-121900- /O.EXP.KOTX.WS.W.0012.000000T0000Z-211212T1800Z/ Central Panhandle Mountains- Including the cities of Lookout Pass, Dobson Pass, and Mullan 954 AM PST Sun Dec 12 2021 ...WINTER STORM WARNING WILL EXPIRE AT 10 AM PST THIS MORNING... The heaviest snowfall has ended. Additional accumulations will be up to 1 inch today above 3000 feet. $$ IDZ027-130300- /O.NEW.KOTX.WW.Y.0040.211212T1800Z-211213T0300Z/ Lewis and Southern Nez Perce Counties- Including the cities of Nezperce, Soldiers Meadow Road, Craigmont, and Winchester 954 AM PST Sun Dec 12 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 7 PM PST THIS EVENING FOR THE HIGHER ELEVATIONS OF THE CAMAS PRAIRIE... * WHAT...Snow expected for the higher elevations of the Camas Prairie. Additional snow accumulations 1 to 3 inches above 3000 feet. * WHERE...Nezperce, Soldiers Meadow Road, Craigmont, and Winchester. * WHEN...Until 7 PM PST this evening. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ JW
The office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 10, 5:04 AM PST | Wind Advisory | OTX | Adams, Asotin, Douglas, Ferry, Garfield, Grant and 6 more | 35 hr |
| Dec 10, 2:31 PM PST | Winter Weather Advisory | OTX | Benewah, Latah | 19 hr |
Nearby
Winter Storm Warnings in Washington, 2021Winter Storm Warnings in Idaho, 2021Every winter storm warning in 2021
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.