Summary and Forecast

Solar Summary

(last updated 01 Mar 2026 23:30 UT)

Activity 01 Mar: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 01 Mar: 147/101

Solar Forecast

(last updated 01 Mar 2026 23:30 UT)

02 Mar 03 Mar 04 Mar Activity R0, chance of R1 R0, chance of R1 R0, chance of R1 Fadeouts Possible Possible Possible 10.7cm/SSN 150/105 150/105 150/105 COMMENT: Solar flare activity on UT day 01-Mar was at the R0 level. There are seven numbered active regions visible on the solar disk. All regions are small and magnetically simple with little to know recent flare production history. AR4382 (N22W45, beta) and AR4383 (N15W07, beta) both showed spot development over the UT day. All other numbered active regions are either stable or in decay. Solar flare activity is expected to be at the R0 level, with a chance R1 over 01-03 Mar. S0 solar radiation storm conditions were observed on UT day 28-Feb. S0 solar radiation storm conditions are expected over 01-03 Mar. No coronal mass ejections (CMEs) were observed on UT day 01-Mar. The solar wind speed declined slightly over the UT day 24-Feb, mostly ranging between 440 and 340 km/s. The wind speed is currently at around 360 km/s. A forecast possible CME impact does not appear to have eventuated. The solar wind is expected to continue to remain near background levels over 02-04 Mar. A coronal hole is visible on the solar disk in the southern hemisphere, but is considered too far south to impact the solar wind environment at Earth.

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