Two Earth-directed CMEs, G2 – Moderate geomagnetic storm watch in effect


Two Earth-directed coronal mass ejections (CME) were produced over the past 3 days. The estimated time of arrival to Earth is late July 23 to midday July 24, 2024. A G2 – Moderate geomagnetic storm watch is in effect.

A disappearing solar filament (DSF), approximately 8 degrees in length, began erupting in the vicinity of Active Region 3757 (beta) after 16:10 UTC on July 21, 2024, producing an Earth-directed CME. The event coincided with an M1.0 flare from AR 3747.

A subsequent halo CME signature was observed in LASCO C2 imagery beginning at 16:48 UTC. The CME is forecast to reach Earth late on July 23 to midday (UTC) on July 24.

In addition, it appears another CME — produced on July 19, is expected to reach Earth around the same time.

As a result, a G2 – Moderate geomagnetic storm watch is in effect for July 24.

Under G2 conditions, power grid fluctuations can occur and high-latitude power systems may experience voltage alarms. Satellite orientation irregularities may occur and increased drag on low Earth-orbit satellites is possible.

High-frequency radio propagation can fade at higher latitudes and aurora may be seen as low as New York to Wisconsin to Washington state.

Powerful X1.9 solar flare erupts, producing strong CME

Tuesday, July 16, 2024

Major X1.2 solar flare erupts from AR 3738

Sunday, July 14, 2024

Study reveals major impacts of G5 – Extreme geomagnetic storm on satellite operations in May 2024

Saturday, July 13, 2024

Old region 3664 returns with M9.3 solar flare

Sunday, June 23, 2024

G2 – Moderate geomagnetic storm watch, X1.5 flare erupts from departing Region 3697

Monday, June 10, 2024

Strong solar radiation storm in progress after M9.7 solar flare produced large CME

Saturday, June 8, 2024

Long-duration M7.3 solar flare produces possible Earth-directed CME

Sunday, June 2, 2024





Source link