Light winds created ideal conditions for thunderstorms to develop near the western shores of Guam. This environment is also support of waterspout development as winds in the first 3,000 feet are light and then slowly increase in height.
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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 GUM wrote it up.
Light winds created ideal conditions for thunderstorms to develop near the western shores of Guam. This environment is also support of waterspout development as winds in the first 3,000 feet are light and then slowly increase in height.
The Andersen AFB radar (PGUA), 21 km away, was scanning. The volume nearest the first event began at 04:07 UTC.
1 waterspout. Local standard time, as filed.
A brief waterspout was spotted about 3.5 miles offshore, near Apra Habor, from Naval Base Guam. Time and distance was estimated from a report shared with the office, compared wit available radar data. No damage or injuries were reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Guam Waters in 2025Every state in 2025This day in weather history
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 2026-10-01. Each event’s entry at NCEI: 1275014.