Summary and Forecast
Solar Summary
(last updated 09 Nov 2026 23:30 UT)
Activity 09 Nov: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 09 Nov: 129/82
Solar Forecast
(last updated 09 Nov 2026 23:30 UT)
10 Nov 11 Nov 12 Nov Activity R0-R1 R0-R1 R0-R1 Fadeouts Possible Possible Possible 10.7cm/SSN 139/93 137/91 135/89 COMMENT: Solar flare activity on UT day 09-Nov was at the R0 level, with multiple C-class flares observed. There are currently five numbered active regions (ARs) visible on the solar disk, and one unnumbered region. AR 4566 (S07W20, beta-gamma-delta) is the largest and most magnetically complex region on the disk, although it has shown some magnetic simplifaction over the previous UT day. This region was responsible for the largest C-class flares observed. AR 4568 (S09E01, beta) showed spot development over the UT day, but remains small and magnetically simple. All other regions are either stable or in decay. A small unnumbered region is visible at S18E32, likely with alpha magnetic complexity. Solar flare activity is expected to be at R0-R1 levels over 10-12 Nov, due to the presence of the large and complex AR 4566. S0 solar radiation storm conditions were observed on UT day 09-Nov and forecast to continue over 10-12 Nov. No Earth-directed coronal mass ejections (CMEs) have been observed. A faint, east directed CME is visible from 09/1326UT in SOHO coronagraph imagery and an eruption of the western limb is visible in SDO, GOES SUVI and H-Alpha imagery from 09/1208UT at around N25. Both of these events are considered non-geoeffective. The solar wind speed declined over 09-Nov, mostly ranging between 800 km/s and 620 km/s and is currently at around 620 km/s. The peak total interplanetary magnetic field strength (IMF, Bt) was 5 nT and the north-south IMF component (Bz) ranged from -3 to +4 nT. The solar wind speed is expected to continue to decline towards background levels over 10-12 Nov as coronal hole high speed wind stream effects wane.
Solar Activity levels are explained in the SWS Solar Terrestrial Glossary.
