Summary and Forecast
Solar Summary
(last updated 06 May 2026 23:30 UT)
Activity 06 May: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 06 May: 120/72
Solar Forecast
(last updated 06 May 2026 23:30 UT)
07 May 08 May 09 May Activity R0, chance of R1 R0, chance of R1 R0, chance of R1 Fadeouts None expected None expected None expected 10.7cm/SSN 118/70 128/81 130/84 COMMENT: Solar flare activity on UT day 06-May was at the R0 level, with no M-class or greater flares observed. There are currently five regions on the visible solar surface, with Active Region (AR) 4431 (S17W17, beta) being the largest. This region has exhibited a redistribution of minor spots over the past 24 hours, and has remained mostly stable. The nearby region 4432 (N12E01, beta) has shown some growth over the same period. Previously flare-active AR 4425 (N05W90) has recently rotated over the western limb. All other regions are either stable or in decay. Solar activity is forecast to remain at the R0 level, with a chance of R1 over 07-09 May. S0 solar proton conditions were observed on 06-May, with the proton flux at background levels throughout the entire UT day. S0 conditions are expected to persist over 07-09 May. No Earth-directed coronal mass ejections (CMEs) were observed in available coronagraph imagery over the past UT day. A CME first visible at 06/1036UT in SOHO/LASCO imagery has been modelled to be a farside event and therefore not geoeffective. A filament eruption was visible in GOES/SUVI 304 imaging centred on S40E15 at 06/1856UT. No CME has yet been observed in association with this event. The solar wind speed was consistent with background values, largely ranging between 350-380 km/s throughout the UT day. The interplanetary magnetic field strength (IMF, Bt) peaked at 9 nT early in the UT day, with the north-south component (Bz) ranging between -3 and +9 nT over the UT day. The solar wind is expected to increase during 07-May due to an equatorial coronal hole high speed wind stream connecting with Earth. The solar wind speed will then remain elevated on 08-May, before beginning to decline on 09-May.
Solar Activity levels are explained in the SWS Solar Terrestrial Glossary.
