Tuesday, 21 April 2015

Three M-class solar flares, CH effects, CME watch

Three M-class solar flares, CH effects, CME watch

Tuesday, April 21 2015 - 14:11 UTC


Three low-level (R1) M-class solar flares took place today, all of them located at or near the east or west limb of our star.
The first of these solar flares was an M1.0 solar flare at 07:21 UTC from departing sunspot region 2322. Sunspot region 2322 has been growing rapidly during the past 24 hours but as this sunspot region is now turning away from Earth, we have to conclude that any future eruptions from this sunspot region will not be directed towards our planet.
The second M-class solar flare was an M2.2 event at 10:40 UTC but it did not come from sunspot region 2322. A new sunspot region behind the east-limb was the source of this event. SDO imagery shows that is was a pretty violent event and it likely released a coronal mass ejection that is directed away from Earth.
The third and final M-class event of today (thus far... the day isn't over yet!) was also an M2.2 event. This solar flare peaked at 11:57 UTC and came from departing sunspot region 2322. It did not look eruptive but because this was also a limb event, any resulting coronal mass ejection will not be directed at Earth. Below you can watch a video by SDO showing the three M-class solar flares. The three flashes on the limbs are the M-class solar flares.