M3.7 solar flare from sunspot region 2443

Wednesday, 4 November 2015 14:45 UTC

Strong M3.72 solar #flare from #sunspot region 12443 - Follow live on https://t.co/XHATH0OOfT pic.twitter.com/AcJze6Aa1A

— SpaceWeatherLive (@_SpaceWeather_) 4 november 2015

Early indications show that a coronal mass ejection has likely been launched following this solar flare as NOAA reports Type II and IV radio sweeps and SDO shows darkening of the corona, something which is knows as coronal dimming and this is an excellent sign that a coronal mass ejection has been launched.

ALERT: Type II Radio Emission
Begin Time: 2015 Nov 04 1343 UTC
Estimated Velocity: 955 km/s

ALERT: Type IV Radio Emission
Begin Time: 2015 Nov 04 1351 UTC

Image: SDO animation from the SIDC showing coronal dimming and a large-scale coronal propagating front. Classic signs that a coronal mass ejection has been launched.

An earth-directed component is very likely and more information will be provided once we have SOHO coronagraph footage.