Summary and Forecast
Solar Summary
(last updated 05 Feb 2026 23:30 UT)
Activity 05 Feb: R1 Flares Max Fadeout Freq. Sectors M2.5 0423UT possible lower E. Asia/Aust. M1.0 0833UT possible lower Mid East/Indian M1.6 1304UT possible lower European M1.8 1513UT possible lower South American/ Atlantic M1.6 1630UT possible lower South American/ Atlantic M1.5 1741UT possible lower South American/ Atlantic M2.2 1934UT possible lower East Pacific/ North American M1.1 2217UT possible lower East Pacific/ North American Observed 10.7 cm flux/Equivalent Sunspot Number for 05 Feb: 176/130
Solar Forecast
(last updated 05 Feb 2026 23:30 UT)
06 Feb 07 Feb 08 Feb Activity R2-R3 R2-R3 R2-R3 Fadeouts Probable Probable Probable 10.7cm/SSN 175/129 175/129 170/124 COMMENT: Solar flare activity was at the R1 level on UT day 05-Feb due to 8 M-class flares. The largest flare was an M2.7 flare at 05/0436UT and all other M-class flares were between M1.2 and M2.2. There are currently eight numbered sunspot regions visible on the solar disk. AR4366 (N16W15, beta-gamma-delta) remains the largest and most magnetically complex visible region and was responsible for 6 of the notable flares in the UT day, including the largest. One of its delta spots has simplified, however two remain. AR4362 (S15W21, beta) showed minor spot development and was responsible for three flares in the UT day, one in combination with AR4366. AR4371 (S21E31, beta) also showed spot development over the UT day. An unnumbered region has rotated onto the solar disk at around N11E78, insufficient imagery available, currently, for an accurate magnetic character determination. All other regions appear either stable or in decay. Solar flare activity is expected to be at R2-R3 levels over 06-08 Feb. Solar radiation storm conditions were at the S0 level on 05-Feb. Solar radiation storm conditions are expected to be at the S0 level, with a chance of S1 over 06-08 Feb as AR4366 rotates towards a geoeffective position. No Earth-directed coronal mass ejections (CME) were observed on UT day 05-Feb. The solar wind speed increased over 05-Feb, mostly ranging between 455 to 670 km/s . The wind speed is currently at around 595 km/s. The interplanetary magnetic field strength (IMF, Bt) peaked at 19 nT, with the North-South component (Bz) ranging between -17 and +16 nT over the UT day. The solar wind is expected to remain elevated over 06-Feb, a further enhancement is possible on 07-Feb due to a glancing impact from a CME first observed on 03-Feb combined with possible high speed wind stream effects from a large coronal hole in the northern hemisphere. The solar wind speed is expected to be elevated on 08-Feb.
Solar Activity levels are explained in the SWS Solar Terrestrial Glossary.
