Volcanic Ash in Guam
Every volcanic ash event the National Weather Service has filed in Guam, year by year, with the most significant episodes. Ash from an eruption that fell on land or reduced visibility.
The most significant on the map
The most significant volcanic ash 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
The record
- Events
- 9
- Deaths
- 0
- Injuries
- 0
- Damage
- None recorded
Every year
The most significant
Ranked by deaths, injuries, damage and size together.
- Volcanic Ash in Guam, May 26 to 28, 2003May 26th and 27th. Westerly winds across the Pacific brought thin clouds of ash from the volcano over Guam, Rota, Tinian and Saipan. These clouds had originally blown westward from the volcano by easterly winds out over the Pacific Ocean.
- Volcanic Ash in Guam, May 23 to 25, 2003Anatahan began erupting suddenly from its east crater at about 1800 on May 10. Within hours of the eruption's onset, a towering column of volcanic ash and gas rose to more than 33,000 feet above sea level, and the prevailing wind blew the ash westward.
- Volcanic Ash in Guam, April 6 to 7, 2005Anatahan volcano, located 80 miles north of Saipan and 205 miles north-northeast of Guam, underwent a short but powerful eruption around 0130 SST the morning of April 6th, sending an ash/gas cloud up to above 50,000 feet.
- Volcanic Ash in Guam, February 4, 2005Dozens of students were sent home from several Guam public schools after they became dizzy or nauseous from breathing volcanic haze. The volcanic haze, also known as "vog," was blown south over Guam from Anatahan volcano, and produced a strong sulphurous odor.
More
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.