Summary and Forecast

Solar Summary

(last updated 14 Jul 2026 23:30 UT)

Activity 14 Jul: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 14 Jul: 100/48

Solar Forecast

(last updated 14 Jul 2026 23:30 UT)

15 Jul 16 Jul 17 Jul Activity R0, chance R1 R0 R0 Fadeouts None expected None expected None expected 10.7cm/SSN 105/54 108/58 108/58 COMMENT: Solar activity on UT day 14-Jul was R0, with no solar flares. There are currently three numbered sunspot regions on the solar disk, although all visible regions are currently stable. Solar activity is expected to be R0 with a chance for R1 over 15-17 Jul. No Earth directed CMEs were observed on UT day 14-Jul. S0 solar radiation storm conditions were observed on UT day 14-Jul. S0 solar radiation storm conditions are expected over 15-17 Jul. The solar wind environment on UT day 14-Jul was mildly disturbed, with a weak CME impact at 1438 UT. The solar wind speed ranged from 340 to 450 km/s. The peak total interplanetary field strength (IMF, Bt) was 14 nT and the north-south IMF component range (Bz) was +12 to -5 nT. The solar wind environment is expected to remain mildly disturbed on 15-Jul due to a second possible weak CME impact and a brief influence from a small coronal hole wind stream. The solar wind environment is expected to return to background conditions over 16-17 Jul.

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