Summary and Forecast
Solar Summary
(last updated 08 Nov 2025 23:30 UT)
Activity 08 Nov: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 08 Nov: 172/126
Solar Forecast
(last updated 08 Nov 2025 23:30 UT)
09 Nov 10 Nov 11 Nov Activity R1-R2 R1-R2 R1-R2 Fadeouts Possible Possible Possible 10.7cm/SSN 172/126 170/124 175/129 COMMENT: Solar activity on UT day 08-Nov was at the R0 level, with no significant flaring activity. There are currently six numbered sunspot regions visible on the solar disk and three unnumbered regions. AR4274 (N25W01, beta-gamma-delta) remains the largest and most magnetically complex region on the disk and is now crossing the central meridian. This region has shown redistribution of its intermediate spots over the UT day. AR4277 (S05E39, beta) has exhibited spot growth over the 24-hour period. An unnumbered region recently appeared near S12W03 (beta) and has shown mild spot growth. A second unnumbered region appeared near N22E20 (beta) and has also shown mild growth. A third unnumbered region recently rotated over the eastern limb near S12E70 (alpha) and is stable. All other sunspot regions are either stable or in decay. Solar activity is expected to be at R1-R2 levels over 09-11 Nov. S0 solar proton conditions were observed on UT day 08-Nov. S0 solar proton conditions are expected over 09-11 Nov. No Earth-directed CMEs have been observed. The solar wind speed on UT day 08-Nov mildly declined, ranging from 590 to 670 km/s and is currently near 595 km/s. The peak total interplanetary magnetic field strength (IMF, Bt) was 11 nT and the north-south IMF component (Bz) range was -9 to +5 nT. A period of sustained southward IMF conditions was observed over the interval 07/2356UT to 08/0900UT. The solar wind speed is expected to generally decline over 09-11 Nov as CME effects abate, though a mild increase is possible on 11-Nov due to the potential weak glancing arrival of a CME first observed on 07-Nov.
Solar Activity levels are explained in the SWS Solar Terrestrial Glossary.
