Guam, 1999

Funnel Cloud in Guam, October 4, 1999

October 4, 1999 · NWS GUA · 1 event in 1 county or zone

Funnel cloud was briefly observed 5 miles west of Andersen Air Force Base.

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.

What happened

The episode as NWS GUA wrote it up.

Funnel cloud was briefly observed 5 miles west of Andersen Air Force Base.

Event by event

1 funnel cloud. Local standard time, as filed.

Funnel Cloud, Guam

When
October 4, 10:28 AM SST to 10:31 AM SST
Where
Guam County, Andersen Afb
Reported by
OTHER FEDERAL AGENCY

What these are

Funnel Cloud
A rotating column of cloud extending from a thunderstorm that did not reach the ground.

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

The same day elsewhere

More

Every storm in Guam in 1999Every state in 1999This day in weather historyWarnings in Guam, October 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: 5720400.