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Champi was a monster, but the forecast was the real story

A 185 mph super typhoon was tracked for days, and Taiwan had time to cancel flights and evacuate. Forecasting is science's quiet success, and we undervalue it.

Published
October 23, 2026
Reading time
3 min
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Planet & climate

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How do you know a scientific field is working? Often because nothing dramatic happens. Super Typhoon Champi reached 185 mph winds, tying the strongest storm on Earth this year, and so far the news from Taiwan has been about canceled flights and closed offices rather than a city caught off guard. That is not boring. That is the product.

Champi was fierce, but the headlines were about logistics

Champi rapidly intensified as it approached Guam, passing roughly 10 miles from the island's southern tip. According to The Weather Network, its maximum sustained winds doubled from 110 km/h to 220 km/h in 24 hours. It later tied Super Typhoon Sinlaku, from April, for the strongest 1-minute sustained winds of 2026.

By Friday it had weakened from super typhoon status, but as Yahoo reports, one person died after being swept by waves, 171 were injured, all 262 domestic flights and 669 international flights were canceled, and close to 1,300 people were evacuated from vulnerable mountain areas.

The warning is the achievement

Look at what the system delivered. Days ahead, forecasters said Champi would pass close to Taiwan's northeast and then curve toward Japan. A forecaster's newsletter on Substack, on Wednesday, Oct. 21, said the storm was still forecast to miss Taiwan to the north and east, "just barely." Authorities issued land and sea warnings, and mobile phone alerts warned of waves above 6 meters. Rainfall estimates, near one meter in northern mountains, were circulating as the storm closed in.

We should be careful here. One death and 171 injuries are real, and a storm of this size is no triumph for anyone caught in it. The storm was also still affecting Taiwan as this was written, so the final verdict is not in. Forecasts differed on details too: sources gave different rainfall maxima (12 inches in one, 18 in another), and the exact distance of the closest approach is the kind of margin that decides whether a city floods. Still, in our reading, the broad story, where, when and roughly how hard, was known early. That hundreds of flights could be canceled in an orderly way looks like the evidence.

We think this is the underrated part of climate-era science. Nobody applauds a forecast that works, because its success looks like an overreaction that turned out to be sensible.

Intensity is the frontier, and it's where money matters

The weak spot is visible in the same coverage. Doubling wind speed in 24 hours is the kind of behavior that makes forecasting hard. The conditions were textbook: the Washington Post noted water temperatures of 86 to 88 degrees and weak upper-level winds, and The Weather Network cited sea surface temperatures around 30°C. We can list the ingredients, but predicting exactly when they tip a storm into explosive growth is, we suspect, harder than predicting the track.

That matters because the context is not calming. FOX Weather reports a rapidly strengthening El Niño, and says the Mariana Islands have been in the path of several systems this year. AccuWeather notes Champi was the third typhoon to affect the Northern Mariana Islands in six months, and the Red Cross reported water systems still down since April's Sinlaku. Better forecasts do not repair a well. They buy time, and time only helps if there is also infrastructure and shelter to use it.

Fund the boring parts

Our verdict: the argument for more money is not "forecasting is broken." It is that it works well enough to show what the next gains are worth. Satellite imagery, like the NASA nighttime composite of Champi approaching Taiwan, and the numerical models behind it are public goods with an unusually clear return: evacuations that are targeted, flights that are rerouted, mountain communities that move before the mudslides.

The sensible priorities, in our view, are intensity prediction, small islands like Guam where a few miles decide everything, and warnings that reach people in the right language on the right device. Those are not glamorous. Neither is a seatbelt. When a storm like Champi passes and the headline is mostly logistics, resist the temptation to call it a lucky escape. Much of it was probably engineered, and it should stay funded.

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