Summary and Forecast

Solar Summary

(last updated 08 Jul 2026 23:30 UT)

Activity 08 Jul: R1 Flares Max Fadeout Freq. Sectors M1.5 1756UT possible lower South American/ Atlantic Observed 10.7 cm flux/Equivalent Sunspot Number for 08 Jul: 116/68

Solar Forecast

(last updated 08 Jul 2026 23:30 UT)

09 Jul 10 Jul 11 Jul Activity R0-R1 R0-R1 R0-R1 Fadeouts Possible Possible Possible 10.7cm/SSN 115/66 115/66 115/66 COMMENT: Solar flare activity on UT day 8-jul was R1, with an isolated M1.5 flare from active sunspot region (AR) 4482 (S08E24, beta). There are currently three numbered sunspots on the solar disk. AR 4485 (S09W29, beta) did show growth in the past day but likely reached maturity to begin its decay phase. Solar activity is expected to be R0-R1 over 9-11 Jul. No Earth-directed CMEs were observed on UT day 8-Jul. S0 solar radiation storm conditions were observed on UT day 8-Jul. S0 solar radiation storm conditions are expected over 9-11 Jul. The solar wind environment on UT day 8-Jul was mildly disturbed due to possible weak glancing blow from a CME launched on 3-Jul, then later the likely entry into a recurrent coronal hole wind stream. The solar wind speed ranged from 370 to 410 km/s. The peak total interplanetary field strength (IMF, Bt) was 10 nT and the north-south IMF component range was +2 to -7nT. Solar wind parameter Bz has been oriented southward intermittently throughout the day. The solar wind is expected to remain mildly disturbed over 9-10 Jul, returning to background levels by 11-Jul.

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