Summary and Forecast

Solar Summary

(last updated 15 Feb 2026 23:30 UT)

Activity 15 Feb: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 15 Feb: 118/70

Solar Forecast

(last updated 15 Feb 2026 23:30 UT)

16 Feb 17 Feb 18 Feb Activity R0 R0 R0 Fadeouts None expected None expected None expected 10.7cm/SSN 115/66 115/66 110/60 COMMENT: Solar flare activity on UT day 15-Feb was at the R0 level, with no flares above C2.0 in magnitude. There are currently five numbered sunspot regions visible on the solar disk. All sunspot regions are small, magnetically simple and appear stable. Solar flare activity is expected to be at the R0 level over 16-18 Feb. S0 solar proton conditions were observed on UT day 15-Feb. S0 solar proton conditions are expected over 16-18 Feb. No Earth-directed coronal mass ejections (CMEs) were observed on UT day 15-Feb. The solar wind speed increased on 15-Feb, mostly ranging between 480 to 750 km/s. The wind speed is currently at around 620 km/s. The peak total interplanetary magnetic field strength (IMF, Bt) was 13 nT and the north-south IMF component (Bz) range was -11 to +10 nT. The solar wind speed is expected to mostly remain at current levels over 16-17 Feb with a decline possible from late on 17-Feb to 18-Feb.

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