Solar
FORECAST SOL: Moderate yellow MAG: Moderate yellow ION: Normal green
HomeSolarSolar ConditionsSummary and Forecast Friday, Jul 24 2026 06:20 UT
Solar Conditions

Summary and Forecast

Solar Summary

(last updated 24 Jul 2026 02:11 UT)

Activity 23 Jul: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 23 Jul: 148/102

Solar Forecast

(last updated 24 Jul 2026 02:11 UT)

24 Jul 25 Jul 26 Jul Activity R1, chance R2 R1, chance R2 R1, chance R2 Fadeouts Possible Possible Possible 10.7cm/SSN 148/102 146/100 152/107 COMMENT: Solar flare activity on UT day 23-Jul was at the R0 level with the largest a C5.4 flare at 23/0327UT, produced by Active Region (AR) 4493 (N05W31, beta-gamma-delta). There are currently five numbered and one unnumbered sunspot regions visible on the solar disk. AR4493 is the largest and most magnetically complex region and has exhibited slight growth in its intermediate spots. AR4494 (S04E36, beta-delta) and recently numbered AR4495 (S06E30, alpha) also exhibited growth over the UT day. All other regions are either stable or in decay. Solar flare activity is forecast to be at the R1 level over 24-26 Jul, with a chance of R2, due to the magnetic complexity of AR4493 and AR4494. S0 solar radiation storm conditions were observed over UT day 23-Jul. S0 solar radiation storm conditions are forecast over 24-26 Jul. No Earth-directed coronal mass ejections (CMEs) have been observed in coronagraph imagery over the past UT day. A faint north-directed CME was observed in SOHO/C2 imagery from 23/1836UT. This CME is considered a farside event and therefore not geoeffective. The solar wind speed on UT day 23-Jul increased, ranging from 460 to 710 km/s and is currently near 600 km/s. The interplanetary magnetic field strength (IMF, Bt) peaked at 11 nT, with the north-south component (Bz) ranging between -8 and +9 nT over the UT day. A sustained period of southward IMF conditions was observed over the interval 23/1700-2052UT. The solar wind speed is expected to remain elevated over 24-26 Jul due to ongoing coronal hole high speed wind stream effects from an northern hemisphere coronal hole.

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

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