An X1.1 solar flare from Active Region 4479 produced a full-halo coronal mass ejection (CME) on June 30, 2026, prompting SWPC to issue a G2 – Moderate Geomagnetic Storm Watch for July 3.
A strong solar flare measuring M5.8 erupted from Active Region 4475 located at the west limb at 12:57 UTC on June 30, 2026. The event started at 12:37 and ended at 13:23 UTC.
A strong M6.8 solar flare erupted from Active Region 4473 on June 21, 2026, becoming the strongest flare produced by the region so far and the strongest since X1.0 on June 3. The event began at 19:17 UTC, reached maximum intensity at 19:29 UTC, and ended at 19:35 UTC.
A coronal mass ejection (CME) associated with an M1.8 solar flare from Region 4461 is forecast to arrive around midday UTC on June 8. Forecast calls for G1 – Minor to G2 – Moderate storming on June 8 and early June 9, and isolated G3 – Strong periods on June 8.
A G3 – Strong Geomagnetic Storm Watch is in effect for June 4 and 5, 2026, following three significant solar flares from Active Region 4455. NOAA’s Space Weather Prediction Center (SWPC) issued the watch at 14:52 UTC on June 3 after Earth-directed CME components were identified from two eruptions earlier in the day.
An X1.0 solar flare erupted from Active Region 4455 at 11:28 UTC on June 3, 2026, producing R3 – Strong radio blackout conditions on the sunlit side of Earth. This is the third major flare from the same region today, following M9.3 at 01:36 UTC and M7.7 at 07:00 UTC.
A strong solar flare measuring M9.3 at its peak erupted from Active Region 4455 at 01:36 UTC on June 3, 2026, producing an Earth-directed coronal mass ejection (CME). The event started at 01:22 UTC and ended at 01:43 UTC. At 07:00 UTC, another strong solar flare — M7.7 — erupted from the same region and produced another Earth-directed CME.
High-energy solar protons briefly reached S1 – Minor solar radiation storm levels on May 26, 2026, following a large partial halo coronal mass ejection (CME) from the far side of the Sun. The eruption was first detected by the GOES-19 CCOR-1 coronagraph at 22:00 UTC on May 25. Forecast calls for a 10% chance of another S1 or stronger solar radiation storm on May 27.
A moderately strong solar flare measuring M1.9 erupted from geoeffective Active Region 4436 at 16:12 UTC on May 16, 2026. A coronal mass ejection (CME) was produced, but analysis remains incomplete pending coronagraph imagery.
A G2 – Moderate geomagnetic storm watch is in effect for May 15, 2026, due to the anticipated impact of a corotating interaction region (CIR) associated with a negative polarity coronal hole high speed stream (CH HSS). G1 conditions are forecast for May 16 and 17.
