Solar
FORECAST SOL: Normal green MAG: Moderate yellow ION: Normal green
HomeSolarSolar ConditionsSummary and Forecast Wednesday, Feb 22 2017 06:11 UT
Solar Conditions

Summary and Forecast

Solar Summary

(last updated 21 Feb 2017 23:30 UT)

Activity 21 Feb: Very low Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 21 Feb: 83/24

Solar Forecast

(last updated 21 Feb 2017 23:30 UT)

22 Feb 23 Feb 24 Feb Activity Very low Very low Very low Fadeouts None expected None expected None expected 10.7cm/SSN 83/24 83/24 83/24 COMMENT: Solar activity was at very low levels during the UT day 21 February, with a few B-class flares, mainly from region 2638. No earthward directed CME was observed during this period. The solar wind speed showed a gradual decline from ~460 km/s to ~420 km/s during the UT day today as the coronal hole effect showed further weakening during this period. The IMF Bt stayed close to 5 nT throughout the UT day, whereas IMF Bz varied mostly between +/-5 nT, staying positive for relatively longer periods of time during the day. Another recurrent coronal hole is expected to start strengthening solar wind stream from late on 22 February for the following few days. Very low levels of solar activity may be expected for the next 3 days (22-24 February) with a slight chance of C-class flares.

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

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