Minor C7.0 solar flare erupts at 01:07 UTC on April 3, 2026

A minor C7.0 solar flare erupted at 01:07 UTC on April 3, 2026.

No event reports are available for April 3, 2026. Today’s flares include no M-class or X-class events as per the current data.

In 24 hours to 00:30 UTC on April 3, solar activity reached moderate levels due to an M3.5 flare that peaked at 18:15 UTC on April 2. A narrow coronal mass ejection was observed to the northwest after 18:48 UTC. Region 4409 continued to develop, while other regions remained stable or in gradual decay.

Solar activity is likely to reach moderate levels, with a slight chance for X-class flares from April 3 to April 5 due to flare potential primarily from Regions 4404, 4405, and 4409.

Active sunspot regions presently observed on the Earth-facing solar disk include AR 4399 (S16W78 – Alpha), AR 4401 (N25W83 – Alpha), AR 4402 (N18W70 – Alpha), AR 4403 (N15W39 – Alpha), AR 4404 (N13W21 – Beta), AR 4405 (S27W07 – Beta), AR 4406 (N07W15 – Alpha), AR 4408 (N08E11 – Alpha), AR 4409 (N02E13 – Beta-Gamma), and AR 4410 (N10W88 – Beta).

Over the past 24 hours, the greater than 2 MeV electron flux at geosynchronous orbit was at normal to moderate levels. The greater than 10 MeV proton flux remained below S1 – Minor levels but continued to gradually increase, likely associated with a filament eruption on April 1. The greater than 2 MeV electron flux is likely to return to high levels on April 3 and April 4 due to high-speed solar wind stream influence. There is a chance for the greater than 10 MeV proton flux to exceed S1 – Minor solar radiation storm levels from April 3 to April 5 due to the CME related to the April 1 filament eruption.

Solar wind parameters over the past day indicated a transition from a CME to coronal hole high-speed stream influence. Total magnetic field strength peaked at 17 nT and then settled near 5 to 6 nT. The Bz component was mainly southward, with a peak of -16 nT. Solar wind speed increased from about 435 km/s to 700 km/s, with a predominantly negative phi. Enhanced conditions due to high-speed solar wind are expected through April 5, with additional influences from a glancing blow of the April 1 CME expected late on April 3 into early April 4.

The geomagnetic field ranged from active to G2 – Moderate geomagnetic storm conditions. Geomagnetic activity is expected to reach G1 – Minor to G2 – Moderate levels on April 3 due to continued coronal hole high-speed stream influence. G1 – Minor to G2 – Moderate levels, with a chance for G3 – Strong, are likely late on April 3 through April 4 due to the expected arrival of the April 1 CME. A decrease to active levels is expected over April 5 as solar wind enhancements diminish.