Idaho, 2023

Heavy Snow and Winter Weather in Idaho, December 1 to 4, 2023

December 1 to 4, 2023 · NWS PIH · 17 events in 15 counties and zones

An extended period of off and on snow for the first 4 days of December caused travel problems and widespread heavy snow.

Where it happened

Every event with a place to put it; 17 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
1
Injuries
1
Property damage
$15,000
Crop damage
None recorded
Events
17

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS PIH wrote it up.

An extended period of off and on snow for the first 4 days of December caused travel problems and widespread heavy snow.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pocatello, ID wrote its last area forecast discussion before the first event at Nov 30, 8:45 PM MST, 3 hours 15 minutes earlier.

Area forecast discussion, Nov 30, 8:45 PM MST, 3 hours 15 minutes before
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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

13 heavy snow, 4 winter weather. Local standard time, as filed.

Winter Weather, Upper Snake River Plain

When
December 1, 12:00 AM MST to December 2, 12:00 AM MST
Where
Upper Snake River Plain forecast zone
Reported by
Law Enforcement
Coordinates
43.805, -111.767 (the zone’s center; the record gives no point)

Two to 3 inches of snow fell in Rexburg and Idaho Falls and law enforcement reported multiple slide offs and accidents on US Highway 20 just south of Rexburg on the morning of the 1st. Slick roads were the likely cause of many of the accidents.

Heavy Snow, Marsh and Arbon Highlands

When
December 1, 12:00 AM MST to December 4, 8:00 AM MST
Where
Marsh and Arbon Highlands forecast zone
Reported by
SNOTEL
Coordinates
42.838, -112.256 (the zone’s center; the record gives no point)

An estimated 26 inches of snow fell at the Sedgwick Peak SNOTEL and 17 inches at Wildhorse Divide. 10.4 inches of snow fell 5 miles north of Inkom. 16.5 inches of snow was measured 3 miles north northwest of Lava Hot Springs and 11 inches in Inkom with 10.9 inches measured at McCammon.

Heavy Snow, Franklin-Eastern Oneida Region

When
December 1, 12:00 AM MST to December 4, 8:00 AM MST
Where
Franklin-Eastern Oneida Region forecast zone
Reported by
SNOTEL
Coordinates
42.188, -112.176 (the zone’s center; the record gives no point)

A total of 31 inches of snow was estimated at the Oxford Springs SNOTEL site.

Heavy Snow, Bear River Range

When
December 1, 12:00 AM MST to December 4, 8:00 AM MST
Where
Bear River Range forecast zone
Reported by
SNOTEL
Coordinates
42.412, -111.568 (the zone’s center; the record gives no point)

An estimated 35 inches of snow fell at the Emigrant Summit and Franklin Basin SNOTEL sites.

Heavy Snow, Caribou Range

When
December 1, 12:00 AM MST to December 4, 8:00 AM MST
Where
Caribou Range forecast zone
Reported by
SNOTEL
Coordinates
42.815, -111.502 (the zone’s center; the record gives no point)

An estimated 11 inches of snow fell at the Giveout SNOTEL site with 21 inches at Slug Creek Divide and 16 inches at Somsen Ranch. 7.5 inches was measured at a Soda Springs site.

Heavy Snow, Centennial Mountains-Island Park

When
December 1, 12:00 AM MST to December 4, 7:00 AM MST
Where
Centennial Mountains-Island Park forecast zone
Reported by
COOP Observer
Coordinates
44.091, -111.680 (the zone’s center; the record gives no point)

A total of 11.5 inches of snow was measured at the Island Park COOP site. 16.3 inches was estimated at the Island Park SNOTEL site and 18.3 inches at the White Elephant SNOTEL site.

Heavy Snow, Lost River Range

When
December 1, 12:00 AM MST to December 3, 8:00 PM MST
Where
Lost River Range forecast zone
Reported by
SNOTEL
Coordinates
43.982, -113.727 (the zone’s center; the record gives no point)

An estimated 11 inches of snow fell at the Hilt's Creek SNOTEL site.

Heavy Snow, Frank Church Wilderness

When
December 1, 12:00 AM MST to December 3, 8:00 PM MST
Where
Frank Church Wilderness forecast zone
Reported by
SNOTEL
Coordinates
44.241, -114.282 (the zone’s center; the record gives no point)

An estimated 11 inches of snow fell at the Mill Creek Summit SNOTEL site.

Heavy Snow, Sawtooth-Stanley Basin

When
December 1, 12:00 AM MST to December 4, 5:00 AM MST
Where
Sawtooth-Stanley Basin forecast zone
Reported by
SNOTEL
Coordinates
43.826, -114.131 (the zone’s center; the record gives no point)

An estimated 27.3 inches of snow fell at the Vienna Mine SNOTEL site.

Heavy Snow, Sun Valley Region

When
December 1, 12:00 AM MST to December 4, 7:00 AM MST
Where
Sun Valley Region forecast zone
Reported by
SNOTEL
Coordinates
43.826, -114.131 (the zone’s center; the record gives no point)

The following estimated snow amounts fell at these SNOTEL sites: Chocolate Gulch 11.5 inches, Dollarhide Summit 16.1 inches, Galena 15.8 inches, Galena Summit 15.4 inches, Hyndman 13 inches, and Lost Wood Divide 16.4 inches.

Heavy Snow, Big Lost Highlands-Copper Basin

When
December 1, 12:00 AM MST to December 4, 6:00 AM MST
Where
Big Lost Highlands-Copper Basin forecast zone
Reported by
SNOTEL
Coordinates
43.792, -113.811 (the zone’s center; the record gives no point)

The following snowfall amounts were estimated at SNOTEL sites: Bear Canyon 15.6 inches, Garfield Ranger Station 22.5 inches, Smiley Mountain 13.5 inches, and Stickney Mill 11.7 inches.

Heavy Snow, Bear Lake Valley

When
December 1, 12:00 AM MST to December 4, 8:00 AM MST
Where
Bear Lake Valley forecast zone
Reported by
COOP Observer
Coordinates
42.285, -111.330 (the zone’s center; the record gives no point)

A total of 13.5 inches of snow was measured by the Bern COOP observer with 8 inches on the 3rd.

Winter Weather, Lost River Range

When
December 1, 12:00 AM MST to December 3, 8:00 PM MST
Where
Lost River Range forecast zone
Reported by
SNOTEL
Coordinates
43.982, -113.727 (the zone’s center; the record gives no point)

An estimated 11 inches of snow fell at the Hilt's Creek SNOTEL site.

Winter Weather, Frank Church Wilderness

When
December 1, 12:00 AM MST to December 3, 8:00 PM MST
Where
Frank Church Wilderness forecast zone
Reported by
SNOTEL
Coordinates
44.241, -114.282 (the zone’s center; the record gives no point)

An estimated 11 inches of snow fell at the Mill Creek Summit SNOTEL site.

Heavy Snow, Big Hole Mountains

When
December 1, 1:00 AM MST to December 4, 10:00 AM MST
Where
Big Hole Mountains forecast zone
Reported by
Trained Spotter
Coordinates
43.644, -111.494 (the zone’s center; the record gives no point)

A total of 32 inches of snow was measured by a spotter 4 miles west of Victor. A foot was measured at 8 pm on the first and it kept adding up through the morning of the 4th. An estimated 24 inches fell at the Pine Creek Pass SNOTEL site through December 3rd. 11.5 inches was measured 3 miles north of Victor by another trained spotter.

Heavy Snow, Southern Hills-Albion Mountains

When
December 1, 1:00 AM MST to December 4, 8:00 AM MST
Where
Southern Hills-Albion Mountains forecast zone
Reported by
SNOTEL
Coordinates
42.284, -113.600 (the zone’s center; the record gives no point)

An estimated 32 inches of snow fell at Bostetter Ranger Station and 51 inches at Howell Canyon SNOTEL sites.

Winter Weather, Arco-Mud Lake Desert

When
December 4, 3:00 AM MST to 9:00 AM MST
Where
Arco-Mud Lake Desert forecast zone
Deaths
0 direct, 1 indirect
Injuries
0 direct, 1 indirect
Property damage
$15,000
Reported by
Newspaper
Coordinates
43.537, -112.374 (the zone’s center; the record gives no point)

A two vehicle collision resulted in the death of one of the passengers. Idaho State Police investigaed a vehicle fatality collision which occurred on Monday, December 4, 2023, at 7:05 A.M. on State Highway 33 at mile marker 57 east of Terreton.

A 2008 Chevrolet Silverado was traveling eastbound on SH33. A 2018 Volvo semi-truck hauling a trailer was traveling westbound on SH33. The Chevrolet crossed the center line where it struck the Volvo head on.

The driver of the Chevrolet, a 23-year-old-man from Terreton, was not wearing a seatbelt and succumbed to his injures at scene. The driver of the semi-truck, a 24-year-old-man from Louisville, KY, was wearing a seatbelt and was transported to a local hospital. Slick roads were thought to be a contributing factor.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Winter Weather, Arco-Mud Lake Desert2023-12-0423MaleVehicle/Towed TrailerIndirect

What these are

Winter Weather
Snow, sleet or freezing rain below warning levels that still caused disruption, damage or casualties.
Heavy Snow
Snowfall reaching the local warning threshold without the other hazards of a winter storm.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Idaho in 2023Every state in 2023This day in weather historyWarnings in Idaho, December 2023

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1153871, 1153872, 1153875, 1153876, 1153878, 1153882, 1153883, 1153887, 1153888, 1153891, 1153892, 1153903, 1192960, 1192962, 1153864, 1153868, 1153901.