March 15, 2015: SOLAR FLARE AND CME: March 15th began with a bang. Between 00:45 UT and 02:00 UT, a magnetic filament erupted in concert with a slow C9-class solar flare from sunspot AR2297.

March 17, 2015:

ST. PATRICK’S DAY GEOMAGNETIC STORM: Arriving earlier than expected, a CME hit Earth’s magnetic field on March 17th at approximately 04:30 UT. At first, the impact sparked a relatively mild G1-class (Kp=5) geomagnetic storm. Since then, however, the storm has intensified to G4-class (Kp=8), ranking it as the strongest geomagnetic storm of the current solar cycle.

Around 17:30 UT I recieved some emails with aurora alerts. Around 18:30 I drove with my wife to the Ermelose Heide. We did not see anything, also because of the strong lightpollution in the north and the hazy sky.

My all sky camera however, recorded some aurora activity between 19:35 and 20:44 UT. I made a short movie of the 47 images and it clearly shows some green and purple aurora’s.

Camera: Canon EOS 40D
Lens: Sigma 4.5 mm F2.8 EX DC Circulair fish eye
Timer Controller: Canon TC80N3
Exposure time: 89s
Interval: 1 s
ISO: 400
F: 3,2
Date: 17-03-2015
Period UT: 19:35-20:44