M3.9 solar flare, S1 radiation storm

Saturday, 2 April 2022 18:09 UTC

We are going to focus on the M3.9 solar flare because that was today's headline grabbing event. Sunspot region 2975 is now near the west limb but thanks to the Parker spiral, the powerful eruption did cause a minor S1 solar radiation storm here at Earth which causes minor issues with HF radio propagation at polar latitudes.

The coronal mass ejection that was launched during the M3 event is impressive. We did not expect this due to the region's location near the limb but the coronal mass ejection is very wide, almost to the point of it being an asymmetrical full halo coronal mass ejection as seen on SOHO LASCO. We will await further information from the NOAA SWPC and their ENLIL solar wind model but a glancing blow should not be ruled out in a few days.

Here is a look at the M3.9 eruption thanks to solar demon along with the CME as seen by SOHO LASCO.

We didn't expect it, but we almost see an asymmetrical full halo eruption. Despite the eruption taking place near the west limb, We do not think we can rule out a glancing blow... pic.twitter.com/LGoHKfbwZn

— SpaceWeatherLive (@_SpaceWeather_) April 2, 2022