140-mph Champi passes closest to Guam. The emergency is not over.

140 mph: that is Typhoon Champi’s maximum sustained wind speed as it moves away from its closest approach to Guam—not a measurement at every home, but the intensity of a Category 4 storm whose northern eyewall has already driven extreme winds ashore in the island’s south. The center has passed very near Guam’s southern point. The emergency has not passed with it. ^{80 3}

As of 5:26 a.m. Chamorro Standard Time on Sunday, October 18, 2026, Guam and Rota and their adjacent waters remained under Typhoon Warnings. Southern Guam’s Extreme Wind Warning and Guam’s Flash Flood Warning both listed an end time of 5:30 a.m. That approaching timestamp is not an all-clear, nor does it establish whether a replacement warning will follow. ^{80 3 75}

The immediate instruction is to remain inside sturdy shelter, in a reinforced interior room away from windows. Guam’s guidance is to stay inside a concrete-reinforced structure until Condition of Readiness 4 is announced—even if conditions temporarily appear calm. No such announcement is established in the official accounts available at this hour. Earlier advice to finish preparations or evacuate has given way to instructions to shelter through dangerous conditions. ^{3 124 154}

The newest verified storm bulletin, National Weather Service Intermediate Advisory 13A, was issued at 5:14 a.m. It places Champi’s closest approach around 4:26 a.m., “very near to the southern point of Guam.” That is an analyzed closest approach, not confirmation that the center made landfall. Nor does it establish that earlier forecasts of super-typhoon strength were realized: the latest assessment remains Category 4, with sustained winds of 140 mph. ⁸⁰

The distinction between the center and the eyewall is central to what Guam is experiencing. At 3:26 a.m., Andersen Air Force Base Doppler radar indicated extreme winds associated with Champi’s northern eyewall moving onshore from Talofofo southward. The southern Guam warning forecast destructive winds of 115–135 mph across the far south. Those are forecast local winds, not verified measurements for each village, and they are a different quantity from the storm’s maximum sustained intensity. ³

At the latest observation, valid at 5 a.m., the center was about 35 miles south-southwest of Guam, moving west at 14 mph. Forecasters expected a slight turn toward the west-northwest with little change in forward speed through Monday, and forecast Champi to maintain its intensity through Sunday night. Moving away therefore does not mean rapidly weakening. ⁸⁰

Typhoon-force winds extended outward up to 25 miles from the center, and tropical-storm-force winds up to 125 miles. These distances describe the reach of the circulation; they do not promise uniform conditions throughout those areas. A track line marks the center’s movement, not the boundary of dangerous weather. ⁸⁰

That final update materially changes the passage account. Warning updates issued at 4:40 a.m. still described a future passage south of Guam, including the possibility of super-typhoon strength within 12 hours. The newer advisory supersedes that prospective timing and position. It does not cancel the continuing wind threat. ^{1 80}

The islands also have distinct alert levels. Tinian and Saipan and their adjacent waters remain under Tropical Storm Warnings, while Typhoon Watches continue for both islands. Tropical-storm conditions are expected there; typhoon conditions remain possible. Their alerts are different from Guam’s and Rota’s, but they are not an all-clear. ⁸⁰

Guam’s readiness status has already moved beyond the preparation stage. Governor Lourdes A. Leon Guerrero placed the island in Condition of Readiness 1 effective 1 p.m. Saturday, October 17, replacing Friday’s Condition 2. Rota entered Typhoon Condition of Readiness 1 at 5 p.m. Saturday. ^{103 16 124}

Flooding is a concurrent emergency, not merely a problem for the hours after the wind. At 3:23 a.m., the Weather Service extended Guam’s Flash Flood Warning until 5:30 a.m., reporting radar-indicated thunderstorms producing heavy rain as Champi’s inner eyewall approached southern Guam. No independently verified observed rainfall accumulation is established here. Earlier rainfall forecasts cannot be treated as amounts that have fallen. ⁷⁵

A separate Flood Watch covers Guam, Rota, Tinian and Saipan through Sunday afternoon, with an encoded end time of 4 p.m. The watch warns that excessive rainfall and runoff may flood rivers, creeks and poorly drained locations. It can overlap the more urgent Guam warning; the warning’s existence does not establish that the wider watch was canceled. Flooded roads remain places to avoid. ^{78 124}

At sea, the forecast is for significant seas as high as 35 feet near the eyewall—conditions the marine warning describes as dangerous to deadly and capable of damaging, capsizing or sinking vessels. That is a forecast sea-state measure, not an observed wave height or a prediction that every wave will reach 35 feet. Vessels have been instructed to remain secured in safe harbor. ⁴

The marine warning also allows for damaging winds through at least Sunday night and dangerous seas into Monday, October 19. The center’s closest approach, the strongest conditions at a particular location and the end of hazardous seas need not occur together. That is why the shoreline remains dangerous after the storm starts receding on a map. ⁴

No confirmed casualty figure or damage total is established by the real-time official accounts examined. That is not evidence of no harm. Local peak winds, rainfall accumulations, actual wave heights and community-by-community damage still require assessment. ^{80 124}

The next full advisory is explicitly scheduled for 8 a.m. ChST Sunday, followed by an intermediate advisory at 11 a.m. Until authorities announce it is safe to leave shelter, the practical answer remains unchanged: stay protected. Champi’s closest approach is behind Guam; the wind, flood and marine hazards are not yet behind its residents. ^{80 154}