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 ...

Similar to the bulletins put out by the NWS local forecast offices, SWPC provides Alerts, Watches and Warnings to the public at large about what to expect from Space Weather. These bulletins are ...

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 ...

Geomagnetic activity in response to CMEs that departed the Sun on 25 Aug is now anticipated to extend into 29 Aug. A G1 (Minor) geomagnetic storm watch remains for 27 Aug for expected CH HSS ...

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 ...

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.

What Changed? Following successful introduction of both SOLAR-1 solar wind data and the new solar wind display into operations, the ingest and processing of DSCOVR data has been stopped and the legacy ...

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 ...