Summary and Forecast

Solar Summary

(last updated 07 Jun 2026 23:30 UT)

Activity 07 Jun: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 07 Jun: 134/88

Solar Forecast

(last updated 07 Jun 2026 23:30 UT)

08 Jun 09 Jun 10 Jun Activity R0-R1 R0-R1 R0-R1 Fadeouts Possible Possible Possible 10.7cm/SSN 135/89 132/86 130/84 COMMENT: Solar activity on UT day 7-Jun was R0, with no solar flares. Active sunspot region (AR) 4464 (S13E39, beta) has grown over the past day, but all other sunspot regions have either stabilised or began to decay. Solar activity over 8-10 Jun is expected to be R0-R1. No Earth directed CMEs were observed on UT day 7-Jun. S0 solar radiation storm conditions were observed on UT day 7-Jun. The >10 MeV protons are currently enhanced but under 1 pfu, but may observe a small increase by the middle of the day due to an anticipated CME arrival. S0 solar radiation storm conditions are expected over 8-10 Jun. The solar wind environment on UT day 7-Jun was near background levels. The solar wind speed ranged between 600-500 km/s and is currently on a slow decline. The peak total interplanetary field strength (IMF, Bt) was 5 nT and the north-south IMF component range (Bz) was +4 to -4 nT. The solar wind environment is expected to become disturbed by mid 8-Jun UT day due to a CME that is expected to arrive from 1300 UT +/- 10 hours. This disturbance is expected to continue into 9-Jun, with conditions returning to background levels by 10-Jun.

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