Summary and Forecast
Solar Summary
(last updated 24 Nov 2025 23:30 UT)
Activity 24 Nov: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 24 Nov: 116/68
Solar Forecast
(last updated 24 Nov 2025 23:30 UT)
25 Nov 26 Nov 27 Nov Activity R0 chance R1 R0 chance R1 R0 chance R1 Fadeouts None expected None expected None expected 10.7cm/SSN 125/78 130/84 135/89 COMMENT: Solar activity was at the R0 level for UT day 24-Nov, with no significant flare events observed. There are currently seven numbered Active Regions on the solar disk, with the confluence of Active Regions 4290 (S09E36, alpha) and 4291 (S14,E43, beta-gamma) being the most magnetically complex. These regions have both shown mild growth in their trailer spots over the past 24 hours. Active regions 4288 (N18E30, alpha) and 4292 (S16W17, beta) have also shown trailer spot growth over the last UT day, with all other regions stable. R0 solar conditions are forecast over UT days Nov 25-27, with a chance of R1 due to the growth of multiple sunspot regions over the last UT day. S0 solar radiation storm conditions were observed over the past 24 hours, with the proton flux consistent with background values. Solar radiation storm conditions are forecast to be at the S0 level over the period 25-27 Nov. There were two Coronal Mass Ejection events observed during UT 24-Nov, of which neither were considered to be geoeffective. The solar wind speed has increased over the past last 24 hours, climbing from 460-510 km/s early in the UT day, to 650-750 km/s during the last six hours. This is due to high speed wind stream effects from an equatorial coronal hole, which has moved into a geoeffective position. The interplanetary magnetic field strength (IMF, Bt) peaked at 15 nT during 24-Nov, with the North-South component (Bz) ranging between -11 and +10 nT. The solar wind speed is expected to remain elevated for 25-26 Nov due to the coronal hole high speed wind stream effects, before declining on 27-Nov as this coronal hole rotates further across the solar disk.
Solar Activity levels are explained in the SWS Solar Terrestrial Glossary.
