Funnel Cloud in Guam

32 funnel cloud events since 1997

Every funnel cloud event the National Weather Service has filed in Guam, year by year, with the most significant episodes. A rotating column of cloud extending from a thunderstorm that did not reach the ground.

The most significant on the map

The most significant funnel cloud episodes in Guam.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

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The record

Events: 32
Deaths: 0
Injuries: 0
Damage: None recorded

Every year

The most significant

Ranked by deaths, injuries, damage and size together.

Hurricane and Flooding in Guam, August 1 to 30, 19972 injured · $1.1 million · 15 eventsAugust saw an active Monsoon trough place itself across the region. This caused copious amounts of rain across the Marianas Islands. This resulted in numerous periods of heavy rainfall and localized Urban and Small Stream flooding.
Flood in Guam, July 17 to 28, 19983 eventsOn the 17th a funnel cloud was sighted west of the Tiyan Weather Office.On the 21st showers and thunderstorms developed over Guam and moved slowly along the western shoreline of the island.
Funnel Clouds in Guam, February 9, 20002 eventsFunnel clouds were observed from the National Weather Service Office at Tiyan. The first funnel clouds were seen between 1516 and 1531 and were to the northwest of the office.
Funnel Cloud in Guam, November 16, 19991 eventFunnel cloud observed to the northwest of the National Weather Service Office in Tiyan between 1657 and 1710.
Funnel Cloud in Guam, January 10, 19991 eventOn the 10th funnel clouds were briefly seen by the observer from Saipan International Airport.
Funnel Cloud in Guam, July 30, 19991 eventFunnel cloud sighted from the Saipan International Airport.
Funnel Cloud in Guam, January 10, 19991 eventOn the 10th funnel clouds were briefly seen by the observer from the Rota Airport.
Funnel Cloud in Guam, June 29, 19991 eventA funnel cloud was spotted to the northwest of the National Weather Service Office at Tiyan. The funnel cloud moved west and then quickly dissipated.
Funnel Cloud in Guam, October 4, 19991 eventFunnel cloud was briefly observed 5 miles west of Andersen Air Force Base.
Funnel Cloud in Guam, August 5, 19991 eventFunnel cloud observed to the east of the Natioanl Weather Service Office at Tiyan.
Funnel Cloud in Guam, July 30, 19991 eventWaterspout was reported by a Cessna pilot over Apra Harbor at around 1720.
Funnel Cloud in Guam, September 21, 20001 eventA funnel cloud was observed from the National Weather Service Office from 1038 to 1054. The funnel cloud was seen south of the station.
Funnel Cloud in Guam, August 3, 20001 eventFunnel cloud observed from Andersen Air Force Base from 1146 to 1150.The funnel cloud was seen to the northeast of the station.
Funnel Cloud in Guam, July 23, 20001 eventFunnel cloud observed from Andersen Air Force Base from 1713 to 1722. The funnel cloud was 16 mile west of the station.
Funnel Cloud in Guam, July 28, 20001 eventFunnel cloud observed from the National Weather Service Office from 1123 to 1134. The funnel cloud was to the northwest of the office
Funnel Cloud in Guam, July 25, 20001 eventFunnel cloud observed from Andersen Air Force Base from 1555 to 1605
Funnel Cloud in Guam, August 1, 20001 eventFunnel cloud observed from the National Weather Service Office from 1304 to 1308. The funnel cloud was near the office.
Funnel Cloud in Guam, May 15, 20001 eventFunnel Cloud observed from Andersen Air Force Base from 1837 to 1846. The funnel cloud was15 miles to the northwest of the station.
Funnel Cloud in Guam, July 17, 20001 eventFunnel cloud observed from Andersen Air Force Base and from the National Weather Service Office from 1124 to 1130. The funnel cloud was 8 miles west of Andersen and 3 miles north of the Weather Service Office.
Funnel Cloud in Guam, July 19, 20001 eventFunnel cloud observed from Andersen Air Force Base from 1506 to 1513. The funnel cloud was northwest of the station.
Funnel Cloud in Guam, June 22, 20011 eventA funnel cloud was visible from the NWSFO from 1651 to 1703. It was estimated to be located 14 miles to the northwest of the station.
Funnel Cloud in Guam, September 9, 20011 eventA Funnel cloud observed to the northeast of the Saipan tower from 1026 to 1051
Funnel Cloud in Guam, September 24, 20011 eventA Funnel cloud was observed to the north of the National Weather Service Office from 1233 to 1235
Funnel Cloud in Guam, September 11, 20021 eventOn the 11th a Funnel cloud was observed west of the Guam International Airport between 1240 and 1244
Funnel Cloud in Guam, September 14, 20021 eventOn the 14th a Funnel cloud was observed west of the Saipan International Airport between 1513 and 1532

Funnel Cloud everywhere Every kind of event in Guam

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.