Summary and Forecast

Solar Summary

(last updated 24 Jun 2022 23:30 UT)

Activity 24 Jun: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 24 Jun: 115/66

Solar Forecast

(last updated 24 Jun 2022 23:30 UT)

25 Jun 26 Jun 27 Jun Activity R0-R1 R0-R1 R0-R1 Fadeouts Possible Possible Possible 10.7cm/SSN 115/66 110/60 110/60 COMMENT: Solar activity on UT day 24-Jun was at the R0 level, with two low-level C-class flares. AR3038 (N16W59, beta-gamma) was responsible for majority of the flaring activity, but has shown some decay. There are currently four numbered sunspot regions on the solar disk, with AR3038 and AR3040 (S14E30, beta-gamma) being the most complex regions. The two remaining regions are stable, and will soon rotate over the western limb, within the next 24 hours. Solar activity is expected to be at R0-R1 levels over 25-27 Jun. Several CMEs were observed, but none are considered to be geoeffective. A filament eruption was observed in GOES SUVI and H-alpha imagery from 24/0800UT near N25W25, which almost completely disappeared. A further eruption of its remnants occurred from 24/1723UT near N20W30. Two narrow CMEs are visible in STEREO-A imagery from 24/1809UT directed to the southwest, and 24/1853UT directed to the northwest. The northwest CME is the likely result of the earlier filament eruption, and further analysis will be conducted to determine if there is an Earth-directed component when more imagery becomes available. The solar wind speed on 24-Jun ranged between 400-540 km/s, and is currently near 425 km/s. The peak total interplanetary magnetic field strength (IMF, Bt) was 10 nT, and the north-south IMF component (Bz) range was +6 to -7 nT. Bz was intermittently southward between 1722-2300UT. The solar wind speed is expected to be mildly enhanced over 25-27 Jun due to coronal hole effects.

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