Volcanic Ash in Alaska, April 19 to 20, 1999

Name: Volcanic Ash in Alaska, April 19 to 20, 1999
Start: 1999-04-19T11:00
End: 1999-04-20T11:30
Location: Alaska

April 19 to 20, 1999 · NWS AFC · 1 event in 1 county or zone

1 volcanic ash, as filed by the National Weather Service.

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.

Event by event

1 volcanic ash. Local standard time, as filed.

Volcanic Ash, Western Ak Peninsula

When: April 19, 11:00 AM AST to April 20, 11:30 AM AST
Where: Western Ak Peninsula County, False Pass
Reported by: GOVT OFFICIAL

The Shishaldin volcano erupted just after 11am Monday. The eruption lasted for close to 6 hours. Fortunately, prevailing winds were north to northwest at lower levels, carrying the ash across uninhabited areas of Unimak Island out into the Pacific. These eruptions during this time of year can typically melt snows on the volcano mountain very rapidly, triggering flash floods and mud slides. In this case, a warning was issued for ash...primarily as it pertained to health and respiratory problems.

What these are

Volcanic Ash: Ash from an eruption that fell on land or reduced visibility.

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: 5689788.