Avalanche in Alaska, April 29, 1999

Name: Avalanche in Alaska, April 29, 1999
Start: 1999-04-29T07:00
End: 1999-04-29T12:00
Location: Alaska

April 29, 1999 · NWS AFC · 1 event in 1 county or zone

1 avalanche, as filed by the National Weather Service.

The toll

Deaths: 1
Injuries: 2
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.

Event by event

1 avalanche. Local standard time, as filed.

Avalanche, Copper River Basin

When: April 29, 7:00 AM AST to 12:00 PM AST
Where: Copper River Basin forecast zone
Deaths: 1 direct, 0 indirect
Injuries: 2 direct, 0 indirect
Reported by: NEWSPAPER

A slow moving slab avalanche swept Canadian mountaineer off a 20 to 30 degree slope and over a 1,000 to 1,500 foot drop. Slab apparently let go about 7 am Thursday, and was about 100 feet wide and 3 feet deep. Temperature at the time at altitude was about 5 degrees Fahrenheit and wind was calm. The 10,000 foot peak where the accident occurred is unofficially named "Ultima Thule" by locals located in the University range southeast of Glennallen.

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.

Event	Date	Age	Sex	Where	Kind
Avalanche, Copper River Basin	1999-04-29	41	Male	Outside/Open Areas	Direct

What these are

Avalanche: A mass of snow sliding down a mountainside that caused a death, an injury or damage.

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

The same day elsewhere

Every storm in Alaska in 1999 Every state in 1999 This day in weather history Warnings in Alaska, 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: 5687922.