Goodbye 2644

Monday, 3 April 2017 21:33 UTC

Goodbye 2644

Sunspot region 2644 was again the most active sunspot region on the earth-facing solar disk today. It produced two M-clas solar flares today: an M1.2 solar flare (R1-minor) at 01:05 UTC and an M5.8 solar flare (R2-moderate) that peaked at 14:29 UTC. The M5.8 solar flare is this region's third solar flare that peaked above the M5 threshold and the strongest solar flare produced by sunspot region 2644 thus far.

The M5.8 solar flare was associated with a coronal mass ejection that is heading well west and away from Earth. There is no chance that this plasma cloud will arrive at Earth.

ALERT: Type II Radio Emission
Begin Time: 2017 Apr 03 1429 UTC
Estimated Velocity: 746 km/s
ALERT: Type IV Radio Emission
Begin Time: 2017 Apr 03 1432 UTC

NASA/ESA SOHO/LASCO C2 frame showing the CME from today's M5.8 solar flare.

Sunspot region 2644 is now located at the western limb and will now slowly rotate onto the far side in the coming 24 hours. M-class activity remains possible from Active Region 2644 until it has fully rotated behind the western limb.

Sunspot region 2645

Sunspot region 2645 was relatively quiet today compared to sunspot region 2644 as it only produced a couple of C-class events. It keeps its Beta-Gamma-Delta magnetic layout but did show signs of decay. It's magnetic delta structure in the trailing portion of group has weakened. It can still produce an M-class event but it needs to be quick if we want to have an earth-facing eruption! Click here to view the most recent SDO imagery of sunspot region 2645.

Any mentioned solar flare in this article has a scaling factor applied by the Space Weather Prediction Center (SWPC), the reported solar flares are 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.

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