Funnel Cloud, Guam
- When
- July 30, 5:20 PM SST to 5:40 PM SST
- Where
- Guam County, Apra Harbor
- Reported by
- AIRPLANE PILOT
Waterspout was reported by a Cessna pilot over Apra Harbor at around 1720.
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 episode as NWS GUA wrote it up.
Waterspout was reported by a Cessna pilot over Apra Harbor at around 1720.
1 funnel cloud. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Guam in 1999Every state in 1999This day in weather historyWarnings in Guam, July 1999
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: 5701324.