Summary and Forecast

Solar Summary

(last updated 29 Jan 2026 23:30 UT)

Activity 29 Jan: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 29 Jan: 129/82

Solar Forecast

(last updated 29 Jan 2026 23:30 UT)

30 Jan 31 Jan 01 Feb Activity R0 Chance R1 R0 Chance R1 R0 Chance R1 Fadeouts None expected None expected None expected 10.7cm/SSN 125/78 115/66 110/60 COMMENT: Solar flare activity was at the R0 level on UT day 29-Jan. There are currently six numbered and one unnumbered sunspot regions visible on the solar disk. Active Region (AR) 4349 (S14E42, alpha) is currently the largest region and has shown slight growth over the UT day. AR4355 (S15E08, alpha) has also shown mild growth over the UT day. All other regions appear stable or in decay. Solar flare activity is expected to remain at the R0 level, with a chance of R1 over 30-Jan to 1 Feb. Solar radiation storm conditions were at the S0 level on UT day 29-Jan. S0 conditions are expected for 30-Jan to 1 Feb. No Earth-directed coronal mass ejections were observed over the past 24 hours. The solar wind speed has been mostly steady and ranged between 781-505 km/s across the UT day and is currently near 689 km/s. The interplanetary magnetic field strength (IMF, Bt) peaked at 7 nT, with the North-South component (Bz) ranging between -7 and +7 nT over the UT day. The solar wind speed is expected to remain elevated over 30-Jan to 1 Feb, due to coronal hole high speed wind stream effects. The solar wind speed is expected to decline over 31-Jan to 1-Feb.

Solar Activity levels are explained in the SWS Solar Terrestrial Glossary.