Idaho, 2011

Heavy Snow in Idaho, November 17 to 18, 2011

November 17 to 18, 2011 · NWS PIH · 4 events in 4 counties and zones

A mid November winter storm off the Pacific brought 6 to 12 inches of snow to the Central Mountains as well as 6 to 24 inches to the Idaho Wasatch. Up to a foot also was recorded in the Cache Valley.

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
4

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.

A mid November winter storm off the Pacific brought 6 to 12 inches of snow to the Central Mountains as well as 6 to 24 inches to the Idaho Wasatch. Up to a foot also was recorded in the Cache Valley.

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 16, 1:56 PM MST, 10 hours 4 minutes earlier.

Area forecast discussion, Nov 16, 1:56 PM MST, 10 hours 4 minutes before
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Hazardous weather outlook, Nov 16, 2:35 PM MST, 9 hours 25 minutes before
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Event by event

4 heavy snow. Local standard time, as filed.

Heavy Snow, Big and Little Wood River Region

When
November 17, 12:00 AM MST to 9:00 PM MST
Where
Big and Little Wood River Region forecast zone
Reported by
SNOTEL

Twelve inches of snow fell at Dollarhide with 9 inches at Galena and 11 inches at Vienna Mine.

Heavy Snow, Sawtooth Mountains

When
November 17, 12:00 AM MST to 9:00 PM MST
Where
Sawtooth Mountains forecast zone
Reported by
SNOTEL

Six inches of snow fell at Bear Canyon with 7 inches at Smiley Mountain and 10 inches at Mill Creek Summit.

Heavy Snow, Cache Valley/Idaho Portion

When
November 17, 4:00 PM MST to November 18, 9:00 PM MST
Where
Cache Valley/Idaho Portion forecast zone
Reported by
Trained Spotter

Spotters reported a foot of snow in the Preston and Weston areas in the Cache Valley.

Heavy Snow, Wasatch Mountains/Iadho Portion

When
November 17, 4:00 PM MST to November 18, 9:00 PM MST
Where
Wasatch Mountains/Iadho Portion forecast zone
Reported by
Trained Spotter

Spotters reported 16 inches of snow in St Charles and 9 inches in Montpelier. SNOTEL amounts were 8 inches at Slug Creek, 23 inches at Franklin Basin, and 11 inches at Emigrant Summit.

What these are

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 2011Every state in 2011This day in weather historyWarnings in Idaho, November 2011

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 2026-09-30. Each event’s entry at NCEI: 354157, 354158, 354160, 354168.