M6.7 solar flare

Monday, 18 April 2016 - 01:43 UTC

M6.7 solar flare

After almost silently transiting the Earth-facing solar disk it didn't look like sunspot region 2529 had the capacity to let loose a strong solar flare. Today at 00:29 UTC it showed that it was a deceiving silence as it found the energy to produce the strongest solar flare of 2016 thus far: M6.72.

It was an eruptive event as both Type II and IV radio sweeps were reported by the SWPC and the beginning of coronal mass ejection is visible on the latest SOHO/LASCO coronagraph imagery. We do have to note that sunspot region 2529 is now close to the west limb so this coronal mass ejection will likely (mostly) miss Earth but we of course await more coronagraph imagery in the hours ahead to judge the exact trajactory of this plasma cloud. It is still too early to confirm if there might be an earth-directed component.

ALERT: Type II Radio Emission
Begin Time: 2016 Apr 18 0030 UTC
Estimated Velocity: 1869 km/s
ALERT: Type IV Radio Emission
Begin Time: 2016 Apr 18 0034 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2016 Apr 18 0023 UTC
Maximum Time: 2016 Apr 18 0024 UTC
End Time: 2016 Apr 18 0024 UTC
Duration: 1 minutes
Peak Flux: 120 sfu
Latest Penticton Noon Flux: 102 sfu


Animation: the eruptive M6.7 solar flare. SDO/NASA/SIDC/ROB.


Image: The beginning of a bright coronal mass ejection is now visible on SOHO/LASCO C2.

A solar radiation storm of the minor S1 class could develop in the hours ahead due to the eruptive nature of this event near the west limb. Minor impacts on HF radio at arctic latitudes will be possible. More news on the coronal mass ejection later today when more LASCO images are available.

Thank you for reading this article! Did you had trouble with some of the technical terms used in this article? Our help section is the place to be where you can find in-depth articles, a FAQ and a list with common abbreviations. Still puzzled? Just post on our forum where we will help you the best we can! Never want to miss out on a space weather event or one of our news articles again? Subscribe to our mailing list, follow us on Twitter and Facebook and download the SpaceWeatherLive app for Android and iOS!

Latest news

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!


Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/10/26Kp5 (G1)
Number of spotless days in 2020:11
Current stretch spotless days:10

This day in history*

Solar flares
*since 1994

Social networks