Solar
FORECAST SOL: Normal green MAG: Normal green ION: Normal green
HomeSolarSolar ConditionsSummary and Forecast Saturday, Feb 27 2021 21:21 UT
Solar Conditions

Summary and Forecast

Solar Summary

(last updated 26 Feb 2021 23:30 UT)

Activity 26 Feb: Very low Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 26 Feb: 80/20

Solar Forecast

(last updated 26 Feb 2021 23:30 UT)

27 Feb 28 Feb 01 Mar Activity Very low to low Very low to low Very low to low Fadeouts None expected None expected None expected 10.7cm/SSN 80/20 80/20 78/17 COMMENT: Solar activity was very low on UT day 26 February. Currently there are three numbered regions on the visible solar disk: AR2803, AR2804, and AR2805. The region AR2805 has produced a B9.5 flare peaking at 26/0725 UT. Solar activity is expected to be very low to low for the next three UT days, 27 February to 1 March. A CME associated with the above-mentioned flare was observed in LASCO and STEREO imagery. Preliminary modelling results show that a glancing blow may occur on 2 March (low confidence). There were no other Earth-directed CMEs in the available coronagraph imagery. On 26 February, the solar wind speed was gradually decreasing from 430 km/s to 400 km/s up to ~1100 UT; the total IMF (Bt) and the north-south component of the IMF (Bz) ranges were 3-5 nT and +3/-3 nT, respectively. Then the solar wind speed increased abruptly to 450-460 km/s; Bt and Bz reached 6 nT and -6 nT, respectively. Probably, this disturbance happened due to a westward CME observed on 22 Feb/2300 UT. The solar wind speed is expected to remain elevated on 27 February. On 1 March another increase in the solar wind speed is expected due to coronal hole effects.

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

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