Solar
FORECAST SOL: Normal green MAG: Moderate yellow ION: Normal green
HomeSolarSolar ConditionsSummary and Forecast Monday, Aug 20 2018 15:14 UT
Solar Conditions

Summary and Forecast

Solar Summary

(last updated 19 Aug 2018 23:39 UT)

Activity 19 Aug: Very low Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 19 Aug: 67/0

Solar Forecast

(last updated 19 Aug 2018 23:39 UT)

20 Aug 21 Aug 22 Aug Activity Very low Very low Very low Fadeouts None expected None expected None expected 10.7cm/SSN 67/0 67/0 67/0 COMMENT: Solar activity was Very Low for the UT day, 19 Aug. For the next three UT days, 20-22 Aug, the solar activity is expected to remain at Very Low levels. H-alpha imagery observed a filament eruption starting ~0534UT near region 2718(S06W12) with an associated narrow CME observed in STEREO imagery around 0754UT, however significant data gaps make definitive analysis difficult. The solar wind speed steadily decreased to 400 Km/s and began to increase from 1600UT onwards to be 500 Km/s at the time of this report. Bz was mostly neutral until 1600UT after which it decreased in magnitude varied between +/-5 nT while Bt increased from 5 nT to 12 nT during this period. These enhanced solar wind speeds are in response to the arrival of CIR ahead of HSS associated with a recurrent coronal hole. The solar wind stream is expected to strengthen further over the next 24 hours due to coronal hole effects.

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

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