Large sunspot produced long duration M-class solar flare

Large sunspot produced long duration M-class solar flare

A long duration M-class solar flare measuring M1.6 at its peak time erupted on October 18, 2014. The source was large Active Region 2192 which just emerged from the southeast limb. The event started at 07:02, peaked at 07:58 and ended at 08:49 UTC.

This region already had several significant eruptions and sent a massive CME into the space as it was transiting onto the Earth side. A sharp uptick in solar activity is very likely over the coming days. 

The region is still not in geoeffective position but is capable of producing strong eruptions.

NOAA SWPC forecasters estimate 30% chance for M-class, and 5% chance for X-class solar flare over the next three days (October 18 - 20).


There are currently 3 numbered sunspot regions on the disk. Emerging Region 2192 (S13E68, Dki/beta-gamma) produced a handful of C-class events over the last 36 hoursThe remaining regions on the visible disk are either stable or decaying.

Sunspots on October 18, 2014. Image credit: NASA SDO / HMI.

2186 - Alpha
2187 - Alpha
2192 - Beta-Gamma

Featured image: NASA SDO AIA 304 at 09:33 UTC on October 18, 2014.

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Tags: m-class


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