CORONAL MASS EJECTIONCME

Coronal mass ejection toward Earth, November 1, 2026

Arrival forecast
Map: Coronal mass ejection toward Earth, November 1, 2026

A coronal mass ejection, a billion-ton cloud of magnetized gas, left the Sun on November 1, 2026 at 19:00 UTC, moving at about 357 km/s (0.8 million mph). NASA’s model forecast it to deliver a glancing blow to Earth around Thursday, November 5 at 05:00 UTC, plus or minus several hours. In the model’s strongest scenario it pushes the K index to 4, below storm level.

Left the SunNov 1 19:00 UTC
Speed357 km/s
Arrival (model)Nov 5 05:00 UTC
Glancing blowYes
Kp forecastup to 4
Travel time82 hours
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What happens when it arrives

If the cloud’s magnetic field points south when it hits, it can couple with Earth’s and set off a geomagnetic storm: auroras far from the poles, and in strong storms trouble for power grids, satellites and GPS. Arrival times are model forecasts and are often off by six hours or more. Live outlook: aurora forecast.

Data: NASA DONKI (WSA-ENLIL model).

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