Super Typhoon Champi Batters Guam: Category 4 Storm's Eyewall Slams Southern Villages as 153,000 Americans Shelter

Published: October 18, 2026

Super Typhoon Champi slammed into Guam on Saturday night local time, its northern eyewall driving extreme winds ashore across the island's southern villages as more than 153,000 residents of the US territory sheltered in place under the storm's closest approach.

The storm underwent explosive intensification, strengthening from a tropical storm to the equivalent of a Category 4 hurricane in less than two days — a rate of strengthening that caught even seasoned forecasters off guard. "A period of rapid intensification was expected but this outperformed what was expected," said Paul Stanko, a meteorologist with the National Weather Service office on Guam.

A "Particularly Dangerous Situation"

At its peak, Champi packed sustained winds of 130 to 150 mph with gusts reaching 184 mph as its centre passed within 10 to 20 miles of Guam's southern tip. The National Weather Service issued an extreme wind warning for the area, describing conditions as a "particularly dangerous situation" and warning that "venturing outside can result in death from flying projectiles."

Residents were instructed to remain inside concrete-reinforced structures, in interior rooms away from windows, until a Condition of Readiness 4 is announced. Guam Homeland Security warned that homes built with corrugated metal "may just be gone in the winds," while power outages were already being reported and officials warned of a possible island-wide outage that could last for days or weeks.

The storm also brought torrential rain — with more than six inches forecast — and a flash flood warning remained in effect through Sunday morning. Storm surge of 5 to 7 feet was possible along southern and eastern coasts. The nearby islands of Rota (population 1,800) sat under a typhoon warning, while Tinian and Saipan faced tropical storm warnings and a typhoon watch.

Third Typhoon This Year — and Many Still in Tents

Champi is the third powerful typhoon to reach the Mariana Islands this year, following Super Typhoons Sinlaku and Bavi earlier in 2026 — and many families were still living in tents from the earlier storms. World Central Kitchen confirmed it was mobilising a response in Guam, its third typhoon response in the region this year.

The governors of Guam and the Northern Mariana Islands both requested emergency disaster declarations on Friday. Approval by President Trump would authorise federal support and funding for emergency protective measures. Airports, harbours and some health facilities in the territories were closed, and the Federal Emergency Management Agency said resources were unlikely to reach the islands for three to five days.

Forecasters were also watching Champi's strength closely: the Joint Typhoon Warning Center projected the storm could reach 161 mph sustained winds after passing Guam — Category 5 begins at 157 mph.

Sources

• Associated Press: "Hurricane Trudy makes its way toward Mexico as Typhoon Champi threatens Guam" (Oct 17, 2026)
• New York Post: "Hurricane Trudy strengthens to Category 2 — moves toward west-central Mexican Pacific coast" (Oct 17, 2026)
• The Guam Daily Post: "Champi now a Category 4 as Guam's roughest hours begin after midnight" (Oct 17, 2026)
• DNYUZ: "Super Typhoon Champi to Bring 'Extremely Dangerous' Winds to Guam" (Oct 17, 2026)
• World Central Kitchen: "First Alert: WCK Responding to Typhoon Champi in Guam" (Oct 2026)