(ORDO NEWS) — On March 13, an unstable filament of magnetism exploded in the far southern hemisphere of the Sun.
As a result, the CME could deliver a glancing blow to the Earth‘s magnetic field on March 17, causing a geomagnetic storm. Sunspot AR2965 constantly ejects M-class solar flares.
A pulse of ultraviolet radiation ionized the upper part of the earth’s atmosphere. This, in turn, caused a small shortwave radio outage over the Pacific Ocean.
Mariners, aviators and radio amateurs may have noticed unusual propagation effects at frequencies below 20 MHz for about 30 minutes around 2330 UTC.
The Earth-facing sunspot has produced such a flare about once a day for the past week. Each explosion briefly interrupted shortwave radio communications on the day side of our planet.
It is noteworthy that none of the flares ejected the CME into space. This series of radio blackouts shows that the Sun can impact the Earth even without a CME.
A CME (coronal ejection) hit the Earth’s magnetic field on March 13, causing a 15-hour geomagnetic storm and some of the best auroras in recent years. Photographer Göran Strand from Sweden managed to shoot a video.
“The show started at 01:00 local Swedish time on March 14th,” Strand says. “There were some of the most active Aurors I have ever seen, with such rapid activity. It was a truly amazing show and I will remember it for a long time.”
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