M4.5 solar flare from sunspot region 2158

Tuesday, 9 September 2014 03:51 UTC

M4.5 solar flare from sunspot region 2158

It took a little while but the sunspot group that we told you to watch out for yesterday has woken up! Sunspot region 2158 was the source of a long duration M4.5 (R1-moderate) solar flare that peaked today at 00:29 UTC.

Coronal Mass Ejection
Coronagraph imagery from SOHO/LASCO is still limited but a the beginning of what looks like an asymmetrical halo Coronal Mass Ejection is starting to become visible which suggest that this solar flare indeed produced a Coronal Mass Ejection that is at least partially directed towards Earth. The bulk of the CME looks to head north-east but there does seem to be an earth-directed component. More information on this will be posted later today as more imagery becomes available.

First LASCO C2 frame


Solar Radiation Storm
We also issue a warning for a possible Solar Radiation Storm. The ammount of high energy protons near Earth are already elevated and we could cross the S1 threshold with this latest eruption.

ALERT: Type II Radio Emission
Begin Time: 2014 Sep 09 0019 UTC
Estimated Velocity: 999 km/s
ALERT: Type IV Radio Emission
Begin Time: 2014 Sep 08 2340 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2014 Sep 08 2349 UTC
Maximum Time: 2014 Sep 08 2352 UTC
End Time: 2014 Sep 08 2359 UTC
Duration: 10 minutes
Peak Flux: 370 sfu
Latest Penticton Noon Flux: 164 sfu
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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