Solar
FORECAST SOL: Moderate yellow MAG: Moderate yellow ION: Normal green
HomeSolarSolar ConditionsSummary and Forecast Friday, May 01 2026 14:05 UT
Solar Conditions

Summary and Forecast

Solar Summary

(last updated 30 Apr 2026 23:30 UT)

Activity 30 Apr: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 30 Apr: 143/97

Solar Forecast

(last updated 30 Apr 2026 23:30 UT)

01 May 02 May 03 May Activity R0-R1 R0-R1 R0-R1 Fadeouts Possible Possible Possible 10.7cm/SSN 135/89 130/84 128/81 COMMENT: Solar flare activity on UT day 30-Apr was at the R0 level, with only C-class flares observed. There are currently six numbered sunspot regions visible on the solar disk and two unnumbered regions. Active Region (AR) 4420 (N16W67, beta) has exhibited growth in its trailer spots over the UT day. This region is now approaching the western limb, limiting a definitive assessment of its magnetic classification. AR 4424 (N17W32, beta) has shown spot development in its intermediate spots, whilst its trailers have shown some decay. Region 4429 (S05E38, beta) has shown spot growth over the UT day. Two unnumbered regions are visible near N12W15 (beta) and S18E65 (beta). Both unnumbered regions have shown growth since appearing on the visible disk. All other sunspot regions are either stable or in decay. Solar flare activity is expected to be at R0-R1 levels over 01-03 May. S0 solar proton conditions were observed on UT day 30-Apr. S0 solar proton conditions are expected over 01-03 May. No Earth-directed coronal mass ejections (CMEs) have been observed. The solar wind speed on UT day 30-Apr increased, ranging from 350 to 505 km/s and is currently near 470 km/s. The peak total interplanetary magnetic field strength (IMF, Bt) was 14 nT and the north-south IMF component (Bz) range was -12 to +11 nT. Periods of sustained southward IMF conditions were observed over the intervals 30/1028-1256UT and 30/1909-2134UT. The solar wind speed is expected to remain elevated on 01-May. A northern hemisphere coronal hole may influence the solar wind speed over 02-03 May, though its effects will likely be limited by its high latitudinal extent.

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

go to top of page