A weather model now refreshes from live satellites
On 3 September 2026 Google DeepMind and Google Research introduced WeatherNext 3, a global forecasting model that ingests live geostationary satellite mosaics and issues a new forecast every hour. They describe surface temperature and moisture on a grid of about five kilometers, other surface fields near ten, and atmospheric fields near twenty-five. The model also forecasts wind near a hundred meters, plus cloud and sunlight for energy planning. For early lead times they report a probabilistic precipitation score improved by up to 60 percent against one satellite reference, 30 percent against a radar product, and 10 percent against gauges. They cite an independent live evaluation by Brightband and still point official warnings to national weather services.
The record ends here. Everything below this line is invented.
What if the forecast could change as fast as the cloud?
Part one
The Hourly Roof
Farid sold the next hour of his roof. The panels did not wait for a morning briefing. Every hour a new picture of the cloud, drawn from the satellites still overhead, told the inverter how much sun was about to land on five kilometers of his valley and not on a blur the size of a county.
He had bid the hour as clear. The hundred-meter wind for the ridge turbines agreed, and the radiation number was fat. The contract locked at the top of the hour. After that, the roof would try to deliver what he had promised, clouds or not.
At ten minutes past, the next refresh arrived. A narrow bright band, the kind the old six-hour product smeared into nothing, sat on the ridge and was moving toward his slope faster than the bid assumed.
The inverter had already tilted the farm toward full export.
Farid watched the band cross the first row of panels, and the export meter begin to fall.
What’s real
- WeatherNext 3 issues an hourly forecast from live satellite data
- Temperature and moisture are described at about five kilometers
- It adds turbine-height wind and sunlight for energy planning
- Official warnings still belong to national weather services
What’s invented
- Farid's hourly power bid and locked contract
- An inverter that commits at the top of the hour
- A cloud band that arrives inside the committed hour
- A meter that falls after the promise
Part two: The Hour He Sold
Part two isn’t on sale yet. Check back soon.
Filed under earth, weather models, satellites, energy.