Key facts
- Alert
- Extreme Wind Warning (extreme)
- Issued by
- National Weather Service, Tiyan GU
- Areas
- Guam, GU
- Places
- Talofofo, Inarajan, Merizo, Santa Rita, and Umatac
- In effect
- until 5:30 AM GMT+10, Oct 18, 2026
What the National Weather Service says
“THIS IS AN EXTREMELY DANGEROUS AND LIFE-THREATENING SITUATION!”
NWS Tiyan GU, Extreme Wind Warning, 3:52 AM GMT+10 Oct 18, 2026 · official alert
“Destructive winds of 115 to 135 mph will spread across far southern Guam, producing swaths of significant to catastrophic damage, particularly to non-concrete structures.”
NWS Tiyan GU, Extreme Wind Warning, 3:52 AM GMT+10 Oct 18, 2026 · official alert
“TAKE COVER NOW! The safest place to be during a major typhoon passage is in a reinforced interior room away from windows.”
NWS Tiyan GU, Extreme Wind Warning, 3:52 AM GMT+10 Oct 18, 2026 · official alert
What to do
Take cover now. Go to a reinforced interior room away from windows. A fully concrete structure offers the best protection.
If you are not in a fully concrete building, get under a table or other sturdy furniture. Cover your head and body with mattresses, blankets or pillows.
Stay in place until the dangerous winds have passed. Do not go outside to check on damage, and do not try to travel during the warning.
After the winds ease, stay away from trees and downed power lines, and follow updates from the National Weather Service and local officials.
Context
FEMA has approved disaster declarations for Guam after several typhoons, including Super Typhoon Bavi and Super Typhoon Sinlaku in 2026, Typhoon Mawar in 2023, Typhoon Wutip in 2019 and Typhoon Mangkhut in 2018. This history shows how often major storms have caused damage serious enough to need federal help on the island.
FEMA records 182 flood-insurance claims in Guam from 1980 to 2026. These claims count only properties that carried flood insurance, so they do not reflect all storm or flood damage, and they do not include wind damage.
Updates
- The extreme wind warning is no longer in effect.
- NWS Tiyan GU issued the extreme wind warning until 5:30 AM GMT+10.
History here
Guam County: 182 flood insurance claims in FEMA's National Flood Insurance Program records since 1980, most recent 2026.
Guam County: recent federal disaster declarations
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Questions
- Is there an Extreme Wind Warning in Guam right now?
- Yes. The National Weather Service in Tiyan issued an Extreme Wind Warning for southern Guam that runs until 5:30 AM GMT+10 (ChST) on Sunday, October 18, 2026.
- Which villages in Guam are under the Extreme Wind Warning?
- The warning covers southern Guam, including Talofofo, Inarajan, Merizo, Santa Rita and Umatac. Radar showed extreme winds from the northern eyewall of Typhoon Champi moving onshore from Talofofo southward.
- How strong are the winds from Typhoon Champi in southern Guam?
- The National Weather Service says destructive winds of 115 to 135 mph will spread across far southern Guam. It warns of significant to catastrophic damage, especially to non-concrete structures.
Sources
- NWS Tiyan GU: Extreme Wind Warning, Oct 18, 2026 weather.gov
- FEMA OpenFEMA: NFIP claims and disaster declarations fema.gov
How this page is made. The Herebeat Hazard Desk builds event pages from official U.S. government data (National Weather Service, USGS, FEMA). The text is written with AI from that data; every number and quote is checked against the official source automatically before publishing, and the page is updated when the agency updates the event. The official source is always the reference. Spotted a mistake? info@herebeat.app. About the Hazard Desk.