NLN Aurora Brief – October 22, 2015

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Aurora Brief Number 3 of 14
Previous Brief: NLN Aurora Briefs – October 21, 2015
Next Brief: NLN Aurora Briefs – October 23, 2015

Today on the Sun:

Active region 2436 remains the center of attention. The region maintained it’s beta-delta classification, added new delta spots, increased in size, and delivered on the promise of more flaring. It grew from 240 millionths to 290 in the period and added 5 new spots. It was also responsible for the largest flare to the period, an impulsive C7.74, that produced a type II radio sweep but does not seem to have produced a CME. The region is a prime candidate for M-class flaring over the next 24. The probability of an M-class flare has been raised to 45%. Here’s an image of the flare in AIA 335 wavelength.

C7.74 Flare launches from AR2436
C7.74 Flare launches from AR2436

Yesterday’s aurora brief profiled an eruption along a long filament in the center of the solar disk. That eruption did not produce a CME signature on LASCO and appears to have be reabsorbed.

This day in 2003:

Strong activity is continuing. The region (AR484) that grew over dramatically over the previous 3 days generated two M-class flare. There were two filament eruptions, one producing a CME that prompted a major storm watch, launched from the area around AR484. Active Region 486 burst onto the scene, rotating around the East limb and putting on a show with three M-class flares including an M9.9. This new region will eventually produce the flare that is responsible for the Halloween Solar Storm of 2003. Stay tuned!

Happy Hunting