Winter Storm in Idaho, April 9, 1999

Name: Winter Storm in Idaho, April 9, 1999
Start: 1999-04-09T11:00
End: 1999-04-09T15:00
Location: Idaho

April 9, 1999 · NWS BOI · 1 event in 1 county or zone

1 winter storm, as filed by the National Weather Service.

Where it happened

Every event with a place to put it; 1 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

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The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 1

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.

The radar

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

Open the radar archive at this moment

Event by event

1 winter storm. Local standard time, as filed.

Winter Storm, Western Magic Valley

When: April 9, 11:00 AM MST to 3:00 PM MST
Where: Western Magic Valley forecast zone
Reported by: NEWSPAPER
Coordinates: 42.672, -114.581 (the zone’s center; the record gives no point)

Strong winds and snowfall produced near white-out conditions in the eastern fringe of the Western Magic Valley. Blowing snow reduced visibilities to less than 1/4 mile causing numerous minor accidents and road slide-offs. Interstate 84 between Twin Falls and Burley was closed during the afternoon by the storm.

What these are

Winter Storm: A storm that brought snow, sleet or freezing rain at warning levels, usually over several hours or days.

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

The same day elsewhere

Every storm in Idaho in 1999 Every state in 1999 This day in weather history Warnings in Idaho, April 1999

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 2026-09-24. Each event’s entry at NCEI: 5692708.