Summary and Forecast

Solar Summary

(last updated 14 Feb 2026 23:32 UT)

Activity 14 Feb: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 14 Feb: 117/69

Solar Forecast

(last updated 14 Feb 2026 23:32 UT)

15 Feb 16 Feb 17 Feb Activity R0, chance R1 R0, chance R1 R0, chance R1 Fadeouts Possible Possible Possible 10.7cm/SSN 115/66 115/66 115/66 COMMENT: Solar flare activity on UT day 14-Feb was at the R0 level, with the largest flare an impulsive C6.0 flare at 14/1112UT. There are currently five numbered sunspot regions visible on the solar disk. AR4374 (N09E04, alpha) is the largest active region on the solar disk and was responsible for the largest flare of the UT day, this region appears stable and magnetically simple. All other sunspot regions are stable. Solar flare activity is expected to be at the R0 level over 15-17 Feb, with a chance of R1. S0 solar proton conditions were observed on UT day 14-Feb. S0 solar proton conditions are expected over 15-17 Feb. No Earth-directed coronal mass ejections (CMEs) were observed on UT day 14-Feb. The solar wind speed decreased for most of the UT day 13-Feb, before increasing again after 14/1500UT, mostly ranging between 355 to 520 km/s. The wind speed is currently at around 505 km/s. The increase in solar wind speed is likely due to an early connection to a high speed wind stream from an equatorial coronal hole. The peak total interplanetary magnetic field strength (IMF, Bt) was 15 nT and the north-south IMF component (Bz) range was -14 to +8 nT. The solar wind is expected to continue to increase on 15-Feb due to coronal hole high speed wind stream effects. The solar wind environment is expected to be enhanced on 16-Feb with a decrease in wind speed possible on 17-Feb.

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