Summary and Forecast

Solar Summary

(last updated 14 Jul 2025 23:32 UT)

Activity 14 Jul: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 14 Jul: 128/81

Solar Forecast

(last updated 14 Jul 2025 23:32 UT)

15 Jul 16 Jul 17 Jul Activity R0-R1 R0-R1 R0-R1 Fadeouts Possible Possible Possible 10.7cm/SSN 128/81 128/81 125/78 COMMENT: Solar activity on UT day 14-Jul was R0, with no solar flares. There are currently eight numbered sunspot regions on the solar disk. AR4139 (N22W18, beta) and AR4142 (N01E51, beta) have shown some minor growth over the past day. All other sunspot regions are either stable or in decay. Solar activity is expected to be R0-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 due to recent coronal hole activity, but is on a general decline. The solar wind speed ranged from 636 to 454 km/s and is on a slow decline. The peak total interplanetary field strength (IMF, Bt) was 9 nT and the north-south IMF component range (Bz) was +7 to -8 nT. The solar wind is expected to continue its current trend today, however is expected to become enhanced again by the end of the UT day 15-Jul due to another coronal hole.

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