Solar Science And Space WeatherSpace Weather

G2 watch and possible G3 geomagnetic storm from March 29 CME

March 30, 2026NOAA Space Weather Prediction Center, Vincent Ledvina

NOAA Space Weather Prediction Center and Vincent Ledvina describe a CME tied to a strong flare with a likely glancing Earth impact, maintaining a G2 watch with a chance of G3 and additional watches into April.

G2 Watch for 31 Mar UTC-Day.
A CME erupted in association with a strong solar flare late on 29 March (EDT).
a partial Earth impact the later half of 31 Mar seems likely.
G2 Watch for 31 Mar UTC-day still stands, with a slight chance for G3.
Impact time of the CME may be around 14 UT on March 31
G2 Watch for 31 Mar UTC-Day
A CME erupted in association with a strong solar flare late on 29 March (EDT)
a partial Earth impact the later half of 31 Mar seems likely
chance for G3
NOAA Space Weather Prediction Center
Vincent Ledvina
space weatherCMEforecast

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