Science

Will NOAA's Space Weather Prediction Center report a geomagnetic storm of level G3 or higher during the next three weeks?

Open for forecasts. Closes Nov 28, 2026, 1:15 PM UTC.

What counts

any observed geomagnetic storm reaching G3 (strong) or higher on the NOAA scale in the window, as shown in SWPC's published alerts and archive.

What does not count

forecasts or watches that did not materialize, or storms below G3.

Source

NOAA Space Weather Prediction Center alerts and archive

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