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, ...

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 ...

On Monday April 25, you are invited to participate in a progress update of the Space Weather Operations, Research and Mitigation (SWORM) activity as outlined in the National Space Weather Action Plan ...

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 ...

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.

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 ...

SOLAR-1 is now operational! The new SOLAR-1 observations can be seen on our webpage at Solar Wind Observations. The full NOAA statement about SOLAR-1 now being operational is here.

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 ...

The current forecast calls for combined CME arrival around mid-afternoon EDT of June 4, with up to G3 levels possible afterwards. CME passage would likely continue into the evening and possibly ...

While the Aurora Timeline Viewer Product is unavailable, please refer to the official and operational 3-Day Forecast. By comparing the forecast Kp value in the geomagnetic forecast section of the ...