Guam, 1999

Waterspout in Guam, July 16, 1999

July 16, 1999 · NWS GUA · 1 event in 1 county or zone

A waterspout was observed from Andersen Air Force Base from 1652 to 1701. The waterspout was 15 miles to the west of the 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.

A waterspout was observed from Andersen Air Force Base from 1652 to 1701. The waterspout was 15 miles to the west of the Air Force Base. It dissipated by 1701.

Event by event

1 waterspout. Local standard time, as filed.

Waterspout, Guam

When
July 16, 4:52 PM SST to 5:01 PM SST
Where
Guam County, Andersen Afb
Reported by
METEOROLOGIST(NON NWS)

What these are

Waterspout
A tornado over water. One that moves ashore is filed as a tornado from the coastline on.

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, July 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: 5701317.