Summary and Forecast

Solar Summary

(last updated 01 Jul 2025 23:30 UT)

Activity 01 Jul: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 01 Jul: 126/79

Solar Forecast

(last updated 01 Jul 2025 23:30 UT)

02 Jul 03 Jul 04 Jul Activity R0 R0 R0 Fadeouts None expected None expected Possible 10.7cm/SSN 128/81 128/81 130/84 COMMENT: Solar activity on UT day 1-Jul was R0, with no solar flares. There are currently eight numbered sunspot regions on the solar disk. Regions 4123 (S28W36, beta), 4126 (N07W65, beta) and 4129 (N02E26, beta) have shown minor growth in the past day, however all regions are generally small and stable. Solar activity is generally expected to be R0 over 2-4 Jul. No CMEs were observed in available imagery. S0 solar radiation storm conditions were observed on UT day 1-Jul. S0 solar radiation storm conditions are expected over 2-4 Jul. The solar wind environment on UT day 1-Jul was steady. The solar wind speed ranged from 546 to 415 km/s and is on a declining trend. The peak total interplanetary field strength (IMF, Bt) was 6 nT and the north-south IMF component range (Bz) was +6 to -6 nT. The solar wind is expected to become mildly perturbed early 2-Jul due to the arrival of a weak CME. A coronal hole may connect with Earth by late 3-Jul to enhance the solar wind speed, however this feature may be too high a latitude to have any influence.

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