Dense Fog in Idaho

Events

19

Deaths

1

Injuries

14

Damage

$373,000

• Dense Fog in Idaho, November 27, 20231 death · 3 injured · $100,000 · 1 eventLocalized dense fog developed on interstate 86 just east of Pocatello to the Pocatello airport exit and a 30 vehicle crash occurred with multiple injuries and one death involved.
• Dense Fog in Idaho, December 21, 202310 injured · $250,000 · 1 eventDense fog contributed to several crashes on interstate 86 near mile marker 55 west of Pocatello. Nine crashes occurred in both the east and west bound lanes at around 930 AM and the interstate didn't re open until 345 PM.
• Flash Flood and Heavy Snow in Idaho, January 2 to 29, 1999$22,000 · 4 eventsDense fog in the Lewiston valley lead to icy conditions along Highway 95 and one minor accident with no injuries.
• Dense Fog in Idaho, February 5 to 6, 20131 injured · 1 eventDense fog and a brief period of freezing rain in the Treasure Valley of Southwest Idaho caused numerous accidents throughout the area.
• Dense Fog in Idaho, January 9, 20024 eventsDense fog developed along the Treasure Valley, Long Valley and locally in the Western Magic Valley on the morning of January 9th. Visibilities were reduced to less than a quarter mile at the Boise Airport.
• Dense Fog in Idaho, January 3 to 4, 20023 eventsWidespread dense fog developed along the Treasure Valley in southwest Idaho and in the Long Valley in the West Central Mountains on the evening of January 3rd. Visibility was reduced to a quarter mile or less throughout the night.
• Dense Fog in Idaho, December 27, 20122 eventsDense fog and slippery roads created hazardous driving conditions across parts of Southeast Idaho on the morning of the 27th.
• Dense Fog in Idaho, January 5, 19961 eventDense fog formed in the Sage Junction Port of Entry reducing visibility to one-eighth of a mile.
• Dense Fog in Idaho, February 2, 19971 eventDense fog covered the eastern portion of the treasure valley. Visiblity was reported at less than 20 feet.
• Dense Fog in Idaho, December 29, 20011 eventLocally dense fog and below freezing temperatures resulted in the formation of black ice on Highway 55 near Donnelly and also in Cascade, Idaho. An accident involving 14 vehicles closed the state highway for two hours between Lake Fork and Donnelly.
• Dense Fog in Idaho, October 25, 20121 eventCalm winds and clear skies allowed very dense radational fog to form in portions of the lower Treasure Valley. Most visibilities were around 1.0 miles, but some reports of visibilities as low as 30 yards caused dangerous driving conditions.
• Dense Fog in Idaho, January 25, 2019$5,000 · 1 eventDense fog was partially responsible for a train ans SUV crash on US 20 near mile post 343 south of Saint Anthony. The vehicle failed to yield to a train. Several other vehicles went off the road. The accident caused the road to be backed up for miles.
• Dense Fog in Idaho, March 10, 2020$8,000 · 1 eventDense fog was determined the cause of a child rear ending the child's mother in a two car collision causing extensive damage. No injuries occurred with the accident occurring on Idaho Highway 33 near mile marker 45.

Dense Fog everywhereEvery kind of event in Idaho

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 2026-09-24.