FORECAST SOL: Normal green MAG: Normal green ION: Normal green
HomeSolarSolar ConditionsSummary and Forecast Wednesday, Jan 23 2019 02:47 UT
Solar Conditions

Summary and Forecast

Solar Summary

(last updated 22 Jan 2019 23:30 UT)

Activity 22 Jan: Very low Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 22 Jan: 71/6

Solar Forecast

(last updated 22 Jan 2019 23:30 UT)

23 Jan 24 Jan 25 Jan Activity Very low Very low Very low Fadeouts None expected None expected None expected 10.7cm/SSN 72/8 72/8 72/8 COMMENT: Solar activity was Very Low on UT day 22 January. There is currently one numbered sunspot region on the visible solar disk, Region 2733, located at N05E23 at 22/2230UT. Solar activity is expected to remain Very Low for the next 3 UT days, 23-25 January. No Earth directed CMEs were visible in the available coronagraph imagery. On UT day 22 January, the solar wind speed mostly remained near its nominal levels, ranging between 300 km/s and 350 km/s. During the last 24 hours, the total IMF (Bt) was mostly steady near 5 nT. The north-south component of IMF (Bz) fluctuated between between -4 to 4 nT for most of the UT day. The solar wind is expected to be remain near nominal conditions for early part of today (UT day 23 January). Then from late UT day 23 January, the solar wind is expected to enhance due to the anticipated arrival of high speed streams (HSS) associated with a recurrent positive polarity equatorial coronal hole. This coronal hole during the previous solar rotation caused daily average winds of up to ~500 km/s. Similar to slightly weaker effects are expected in this rotation.

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

go to top of page