Overview
- Two X-class flares erupted on November 4, an X1.8 from Active Region 4274 and an X1.1 from just beyond the east limb.
- Both events launched CMEs largely off the limb, but modeling points to a possible glancing shock reaching Earth late November 6 into November 7.
- The X1.8 flare produced Type IV radio emissions and a 10 cm burst peaking at 160 sfu, and SWPC confirmed a dayside radio blackout on November 4.
- SWPC issued a G1 geomagnetic storm watch for November 6–7 with a slight chance of G2, citing potential weak grid fluctuations, minor satellite anomalies, HF radio degradation, and possible aurora at high latitudes.
- Region 4274 remains magnetically complex with raised flare odds near 65% for M-class and 15% for X-class, including an M7.4 flare on November 5 as the region rotates toward a more geoeffective position.