Solar
FORECAST SOL: Normal green MAG: Normal green ION: Normal green
HomeSolarSolar ConditionsSummary and Forecast Sunday, Apr 12 2026 19:40 UT
Solar Conditions

Summary and Forecast

Solar Summary

(last updated 11 Apr 2026 23:30 UT)

Activity 11 Apr: R0 Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number for 11 Apr: 93/38

Solar Forecast

(last updated 11 Apr 2026 23:30 UT)

12 Apr 13 Apr 14 Apr Activity R0 R0 R0 Fadeouts None expected None expected None expected 10.7cm/SSN 95/41 95/41 90/34 COMMENT: Solar flare activity was at the R0 level on UT day 11-Apr, with no significant flare activity observed. There is currently no region of significance on the visible solar disk. Recent growth in small solar region AR4416 (N19E02, beta) has slowed with development in its trailer spots and redistribution in its leader spots. A recently emerged very small spot is visible at S08W73. There are currently three numbered solar regions and one unnumbered region on the visible solar disk. Other solar regions are stable or in decay. A 15 degree long thin solar filament extending from AR4416 to the southwest slowly lifted off during the interval 11/1300-1500UT in GONG H-alpha imagery. Solar activity is expected to be at the R0 level for 12-14 Apr. S0 solar radiation storm conditions were observed on 11-Apr. S0 solar radiation storm conditions are expected over 12-14 Apr. No Earth directed coronal mass ejections (CMEs) were observed. No CME was observed with the filament activity near AR4416. The solar wind speed on 11-Apr was strong and steady due to coronal holes now located in the western solar hemisphere. Another isolated coronal hole at solar latitude S35 is crossing the solar central meridian, with the latitude of this hole likely reducing any effects on the solar wind. The solar wind ranged from 498 to 597 km/s and is currently at 588 km/s. The peak total interplanetary magnetic field strength (IMF, Bt) was 11 nT and the north-south component (Bz) range was -6 and +7 nT. The solar wind speed is expected to be initially strong on 12-Apr due to the ongoing influence of solar coronal hole wind streams, then slowly declining.

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

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