SWPC has issued a G3 (Strong) or greater geomagnetic storm warning valid until 10/2359 UTC. The solar wind environment became strongly enhanced following the arrival of a CME from 08 Oct at around ...

A Coronal Mass Ejection (CME) arrived at Earth on 10 October. The CME signature was observed in the solar wind beginning at 10/1434 UTC. A sudden impulse of 56 nT was then recorded at the Niemegk, ...

Since 1975, each of NOAA’s Geostationary Operational Environmental Satellites (GOES), located in Earth’s geographic equatorial plane, approximately 6.6 Earth radii from the center of Earth, have ...

SWPC has issued a G2 (Moderate) geomagnetic storm Watch for 11 Oct 2026. The Watch covers the expected arrival of two coronal mass ejections (CMEs) that left the Sun on 07 and 08 Oct. The 08 Oct CME ...

G1 (Minor) to G2 (Moderate) geomagnetic storms are likely on 09 Oct with the arrival of a CME that was associated with a M1.4 flare from Active Region 4549 on 06 Oct. A high chance for additional ...

A G1 (Minor) geomagnetic storm watch has been issued for 27 Aug for expected CH HSS influences and a G2 (Moderate) geomagnetic storm watch has been issued for 28 Aug for the anticipated arrival of ...

What Changed? Now that the new solar wind display has completed its experimental review period, the experimental banner has been removed from the title and it has become the operational display for ...

G2 (Moderate) geomagnetic storm conditions were observed on 08 Aug following the arrival of a suspected slow moving CME, likely from 05-06 Aug. Conditions could last for the next several hours.

HF Radio: Weak or minor degradation of HF radio communication on sunlit side, occasional loss of radio contact. Navigation: Low-frequency navigation signals degraded for brief intervals.

An X1.1 flare (R3-Strong) occurred at approx 30/2050 UTC from Region 4479 in the north center disk. Analysis will be conducted when imagery becomes available to determine if an Earth-directed CME was ...

Large sunspot group emergence and growth captured by Solar Orbiter. The region is expected to rotate into Earth-view on 24 June and SWPC forecasters will then be able to fully analyze the region and ...

A G3 geomagnetic storm Watch has been issued for 8 Jun, and a G2 geomagnetic storm Watch has been issued for 9 Jun for the anticipated arrival of the CME that left the Sun on 6 Jun. Stay tuned for ...