M1.8 solar flare

Monday, 28 December 2015 13:29 UTC

M1.8 solar flare

Sunspot region 2473 regained some magnetic complexity during the past 18 hours and now has three small delta sunspots making it once more a sunspot region with a Beta-Gamma-Delta magnetic layout.

This resulted in a long duration M1.8 solar flare that peaked at 12:45 UTC.

SUMMARY: 10cm Radio Burst
Begin Time: 2015 Dec 28 1146 UTC
Maximum Time: 2015 Dec 28 1206 UTC
End Time: 2015 Dec 28 1231 UTC
Duration: 45 minutes
Peak Flux: 370 sfu
Latest Penticton Noon Flux: 110 sfu
ALERT: Type IV Radio Emission
Begin Time: 2015 Dec 28 1146 UTC

SDO difference imagery from the SIDC shows us that this is an eruptive event:

This means that it will likely launch a coronal mass ejection towards Earth as sunspot region 2473 is in an excellent earth-facing position. STEREO A confirms that it launched a coronal mass ejection but we need coronagraph imagery from SOHO to determine if it will come towards us (which seems likely right now) and how fast the plasma cloud is traveling so we can determine when it might arrive. More information will of course be provided when we can.

Animation: latest STEREO A imagery confirms the launch of a coronal mass ejection.

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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