Alert USA
weather NWS extreme Guam Coastal Waters; Rota Coastal Waters October 18, 2026 at 2:31 AM

Typhoon Warning

* WHAT...Typhoon conditions, including winds of 64 knots or more will continue for Guam. Tropical storm conditions will continue for Rota.

* WHERE...Guam and Rota Coastal Waters.

* WHEN...Destructive typhoon force winds are occurring in western waters of Guam, but will decrease as Champi moves farther west away from the Marianas. The eye of Champi is now well outside of the coastal waters to the west. Damaging winds will continue through today.

* IMPACTS...Destructive typhoon force and tropical storm force winds will produce dangerous to deadly seas that could damage, capsize or sink vessels, along with drastically reducing visibilities in heavy rain.

* ADDITIONAL DETAILS...Super Typhoon Champi (29W) continues to move quickly away from the Marianas as a Category 4 Super Typhoon. Seas are expected to remain hazardous through tonight, with significant sea heights as high as 24 feet over Guam coastal waters and 20 feet over Rota coastal waters. Dangerous sea conditions may continue into Monday.

Local conditions in Guam Coastal Waters; Rota Coastal Waters may affect travel, public safety, or daily routines. Stay informed and adjust plans if conditions change.

This report is based on information from NWS, monitored by Alert USA's verified emergency feed.

Residents should be prepared for possible effects on travel, public safety, and daily routines while the situation remains active.

Recommended steps: stay informed via official sources; avoid non-essential travel in the area; secure outdoor items if weather is involved; check on family and neighbors.

Alert USA is tracking this developing situation and will update this report as verified information becomes available.

Verified by Alert USA • NWS

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