Alert archive / Idaho / Winter Storm Warnings in 2021
Winter Storm Warning 2, NWS Pocatello, ID
NWS Pocatello, ID issued this winter storm warning at Jan 5, 2021, 3:30 AM MST for Butte County, Clark County, Idaho. It took effect at Jan 5, 2021, 5:00 AM MST. It was in force for 4 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jan 5, 2021, 3:30 AM MST (10:30 UTC)
- In effect from
- Jan 5, 2021, 5:00 AM MST
- Expired
- Jan 5, 2021, 8:47 AM MST
- In force
- 4 hr
- Issued by
- NWS Pocatello, ID
Counties Butte County, ID, Clark County, ID
The radar
The Pocatello radar (KSFX), 100 km from the middle of the area, began a volume at 10:30 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 |
|---|---|---|---|
| Jan 5, 8:53 AM MST | SNOW 2.1 | Dubois, ID | OVERNIGHT |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Boise Airport, ID (KBOI), launched 00:00Z, 10.5 hours before the alert went out and 280 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
- 1205 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 481 m²/s²
- 0-3 km storm-relative helicity
- 590 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
020 WWUS45 KPIH 051030 WSWPIH URGENT - WINTER WEATHER MESSAGE National Weather Service Pocatello ID 330 AM MST Tue Jan 5 2021 IDZ067-051800- /O.CAN.KPIH.WS.W.0001.000000T0000Z-210105T1800Z/ /O.NEW.KPIH.WS.W.0002.210105T1200Z-210105T1800Z/ Beaverhead - Lemhi Highlands- Including the cities of Dubois, Spencer, Edie School, and Small 330 AM MST Tue Jan 5 2021 ...WINTER STORM WARNING IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow and Blowing snow expected. Winds gusting as high as 50 mph. * WHERE...Monida Pass to China Point, Spencer, Beaverhead and Lemhi Highlands. * WHEN...Until 11 AM MST this morning. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. 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 can be obtained by calling 5 1 1. && $$ IDZ071>075-051130- /O.CAN.KPIH.WS.W.0001.000000T0000Z-210105T1200Z/ Frank Church Wilderness-Sawtooth/Stanley Basin-Sun Valley Region- Big Lost Highlands/Copper Basin-Wood River Foothills- Including the cities of Clayton, Stanley, Ketchum, Sun Valley, Galena, Copper Basin, Hailey, Bellevue, and Picabo 330 AM MST Tue Jan 5 2021 ...WINTER STORM WARNING IS CANCELLED... Snow has exited the area, thus the Winter Storm Warning is cancelled. $$ IDZ052-053-051800- /O.CAN.KPIH.WW.Y.0002.000000T0000Z-210105T1800Z/ /O.NEW.KPIH.WW.Y.0003.210105T1200Z-210105T1800Z/ Arco/Mud Lake Desert-Upper Snake River Plain- Including the cities of Mud Lake, INL, Craters of the Moon NM, Idaho Falls, Rexburg, and St. Anthony 330 AM MST Tue Jan 5 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow expected. Total snow accumulations of up to one inch. * WHERE...Mud Lake, INL, Craters of the Moon, Idaho Falls, Rexburg, St. Anthony. * WHEN...Until 11 AM MST this morning. * IMPACTS...Slick driving conditions will be possible in addition to reduced visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1. && $$ IDZ069-051130- /O.CAN.KPIH.WW.Y.0002.000000T0000Z-210105T1200Z/ Lost River Range- Including the city of Borah Peak 330 AM MST Tue Jan 5 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Snow has exited the area, therefore the Winter Weather Advisory is cancelled. $$ IDZ060-063-064-066-051800- /O.CON.KPIH.WS.W.0001.000000T0000Z-210105T1800Z/ Bear River Range-Caribou Range-Big Hole Mountains- Centennial Mountains - Island Park- Including the cities of Emigration Summit, Wayan, Swan Valley, Victor, Island Park, and Kilgore 330 AM MST Tue Jan 5 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow, possibly heavy at times early this morning. Additional snow accumulations of 1 to 2 inches possible. * WHERE...Island Park, Ashton Hill, Targhee Pass, Raynolds Pass, Pine Creek Pass, Wayan, Emigration Pass. Highway 33 from near Newdale to Tetonia. * WHEN...Until 11 AM MST this morning. * IMPACTS...Snow packed roads are likely with difficult driving conditions. Gusty winds may produce areas of blowing and drifting snow resulting in limited visibility. 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 can be obtained by calling 5 1 1. && $$ IDZ061-062-051800- /O.CON.KPIH.WW.Y.0002.000000T0000Z-210105T1800Z/ Bear Lake Valley-Blackfoot Mountains- Including the cities of St. Charles, Montpelier, Georgetown, Grace, Soda Springs, Henry, and Bone 330 AM MST Tue Jan 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow expected. Additional snow accumulations of up to 1 inch. Strong gusty winds early this morning. * WHERE...Fish Creek Summit, Soda Springs, Bancroft, Grace, Georgetown Summit, Montpelier, Border Summit, Bern, Geneva Summit. * WHEN...Through 11 AM MST this morning. * IMPACTS...Plan on slippery road conditions with areas of blowing and drifting snow which could significantly reduce visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1. && $$ IDZ065-051800- /O.CON.KPIH.WW.Y.0002.000000T0000Z-210105T1800Z/ Teton Valley- Including the cities of Ashton, Tetonia, and Driggs 330 AM MST Tue Jan 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow expected. Additional snow accumulations of 1 to 2 inches possible. * WHERE...Ashton, Tetonia, and Driggs. * WHEN...From 1 PM Monday to 11 AM MST Tuesday. * IMPACTS...Plan on slippery or snow packed road conditions. Gusty winds may create areas of blowing and drifting snow with reduced visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1. && $$ IDZ056>059-051800- /O.CON.KPIH.WW.Y.0002.000000T0000Z-210105T1800Z/ Southern Hills/Albion Mountains-Raft River Region- Marsh and Arbon Highlands-Franklin/Eastern Oneida Region- Including the cities of Albion, Almo, Malta, Rockland, Holbrook, Inkom, McCammon, Downey, Lava Hot Springs, Malad, Preston, and Thatcher 330 AM MST Tue Jan 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING ABOVE 6000 FEET... * WHAT...Snow and blowing snow expected. Additional snow accumulation of up to 1 inch possible. * WHERE...Malad Summit, Holbrook Summit, Sweetzer Summit and higher terrain areas mainly above 6000 feet elevation. * WHEN...Through 11 AM MST this morning. * IMPACTS...Plan on slippery or snow packed road conditions with areas of blowing and drifting snow that may reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/pocatello
2 follow-up statements
448 WWUS45 KPIH 051323 WSWPIH URGENT - WINTER WEATHER MESSAGE National Weather Service Pocatello ID 623 AM MST Tue Jan 5 2021 IDZ056>059-051430- /O.CAN.KPIH.WW.Y.0002.000000T0000Z-210105T1800Z/ Southern Hills/Albion Mountains-Raft River Region- Marsh and Arbon Highlands-Franklin/Eastern Oneida Region- Including the cities of Albion, Almo, Malta, Rockland, Holbrook, Inkom, McCammon, Downey, Lava Hot Springs, Malad, Preston, and Thatcher 623 AM MST Tue Jan 5 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Snow has largely ended across the area therefore the Winter Weather Advisory is cancelled. Winds will remain gusty through the morning, which could lead to some pockets of blowing snow. $$ IDZ067-051800- /O.CON.KPIH.WS.W.0002.000000T0000Z-210105T1800Z/ Beaverhead - Lemhi Highlands- Including the cities of Dubois, Spencer, Edie School, and Small 623 AM MST Tue Jan 5 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow and Blowing snow expected. * WHERE...Monida Pass to China Point, Spencer, Beaverhead and Lemhi Highlands. * WHEN...Until 11 AM MST this morning. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions can be obtained by calling 5 1 1. && $$ IDZ060-063-064-066-051800- /O.CON.KPIH.WS.W.0001.000000T0000Z-210105T1800Z/ Bear River Range-Caribou Range-Big Hole Mountains- Centennial Mountains - Island Park- Including the cities of Emigration Summit, Wayan, Swan Valley, Victor, Island Park, and Kilgore 623 AM MST Tue Jan 5 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow, possibly heavy at times early this morning. Additional snow accumulations of 1 to 2 inches possible. * WHERE...Island Park, Ashton Hill, Targhee Pass, Raynolds Pass, Pine Creek Pass, Wayan, Emigration Pass. Highway 33 from near Newdale to Tetonia. * WHEN...Until 11 AM MST this morning. * IMPACTS...Snow packed roads are likely with difficult driving conditions. Gusty winds may produce areas of blowing and drifting snow resulting in limited visibility. 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 can be obtained by calling 5 1 1. && $$ IDZ052-053-051800- /O.CON.KPIH.WW.Y.0003.000000T0000Z-210105T1800Z/ Arco/Mud Lake Desert-Upper Snake River Plain- Including the cities of Mud Lake, INL, Craters of the Moon NM, Idaho Falls, Rexburg, and St. Anthony 623 AM MST Tue Jan 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow expected. Additional snow up to one inch. * WHERE...Mud Lake, INL, Craters of the Moon, Idaho Falls, Rexburg, St. Anthony. * WHEN...Until 11 AM MST this morning. * IMPACTS...Slick driving conditions will be possible in addition to reduced visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1. && $$ IDZ061-062-051800- /O.CON.KPIH.WW.Y.0002.000000T0000Z-210105T1800Z/ Bear Lake Valley-Blackfoot Mountains- Including the cities of St. Charles, Montpelier, Georgetown, Grace, Soda Springs, Henry, and Bone 623 AM MST Tue Jan 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow expected. Additional snow accumulations of 1 to 2 inches. Strong gusty winds early this morning. * WHERE...Fish Creek Summit, Soda Springs, Bancroft, Grace, Georgetown Summit, Montpelier, Border Summit, Bern, Geneva Summit. * WHEN...Through 11 AM MST this morning. * IMPACTS...Plan on slippery road conditions with areas of blowing and drifting snow which could significantly reduce visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1. && $$ IDZ065-051800- /O.CON.KPIH.WW.Y.0002.000000T0000Z-210105T1800Z/ Teton Valley- Including the cities of Ashton, Tetonia, and Driggs 623 AM MST Tue Jan 5 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow expected. Additional snow accumulations of 1 to 2 inches possible. * WHERE...Ashton, Tetonia, and Driggs. * WHEN...From 1 PM Monday to 11 AM MST Tuesday. * IMPACTS...Plan on slippery or snow packed road conditions. Gusty winds may create areas of blowing and drifting snow with reduced visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/pocatello
322 WWUS45 KPIH 051547 WSWPIH URGENT - WINTER WEATHER MESSAGE National Weather Service Pocatello ID 847 AM MST Tue Jan 5 2021 IDZ060-063-064-066-051700- /O.CAN.KPIH.WS.W.0001.000000T0000Z-210105T1800Z/ Bear River Range-Caribou Range-Big Hole Mountains- Centennial Mountains - Island Park- Including the cities of Emigration Summit, Wayan, Swan Valley, Victor, Island Park, and Kilgore 847 AM MST Tue Jan 5 2021 ...WINTER STORM WARNING IS CANCELLED... Snow packed and slippery road conditions continue throughout the eastern mountains this morning while the threat of moderate to heavy snowfall has ended. Thus the Winter Storm Warning has been cancelled for the remainder of the day. $$ IDZ067-051700- /O.CAN.KPIH.WS.W.0002.000000T0000Z-210105T1800Z/ Beaverhead - Lemhi Highlands- Including the cities of Dubois, Spencer, Edie School, and Small 847 AM MST Tue Jan 5 2021 ...WINTER STORM WARNING IS CANCELLED... Snow packed and slippery road conditions continue the northern highlands this morning while the threat of moderate to heavy snowfall has ended. Thus the Winter Storm Warning has been cancelled for the remainder of the day. $$ IDZ052-053-051700- /O.CAN.KPIH.WW.Y.0003.000000T0000Z-210105T1800Z/ Arco/Mud Lake Desert-Upper Snake River Plain- Including the cities of Mud Lake, INL, Craters of the Moon NM, Idaho Falls, Rexburg, and St. Anthony 847 AM MST Tue Jan 5 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Slippery road conditions remain across portions of the Desert and Upper Snake River Plain this morning while the threat of moderate snowfall has ended. Thus the Winter Weather Advisory has been cancelled for the remainder of the day. $$ IDZ061-062-065-051700- /O.CAN.KPIH.WW.Y.0002.000000T0000Z-210105T1800Z/ Bear Lake Valley-Blackfoot Mountains-Teton Valley- Including the cities of St. Charles, Montpelier, Georgetown, Grace, Soda Springs, Henry, Bone, Ashton, Tetonia, and Driggs 847 AM MST Tue Jan 5 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Slippery road conditions remain across portions of the Bear Lake and Caribou lowlands this morning while the threat of moderate snowfall has ended. Thus the Winter Weather Advisory has been cancelled for the remainder of the day. $$ For more information from the National Weather Service visit https://weather.gov/pocatello
The office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 4, 9:26 PM MST | Special Weather Statement | PIH | Minidoka | 49 min |
| Jan 4, 10:11 PM MST | Special Weather Statement | PIH | Power | 34 min |
| Jan 4, 10:41 PM MST | Special Weather Statement | PIH | Power | 34 min |
| Jan 4, 11:14 PM MST | Special Weather Statement | PIH | Bannock, Oneida | 46 min |
| Jan 5, 3:30 AM MST | Winter Weather Advisory | PIH | Bingham, Bonneville, Butte, Fremont, Jefferson, Madison | 5 hr |
Nearby
Winter 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.