All day yesterday (17th March), the space environment around Earth was being blasted by a CME which launched from the Sun a few days previously. The solar wind speed measured just upstream from the Earth reached 500-600 km/s and the interplanetary magnetic field stayed southwards with values of -15-20 nT. All this resulted in spectacular displays of aurora visible across the whole of Fenno-Scandinavia and at least as far south as Wales in the UK. Here at Kilpisjärvi it was, naturally, cloudy and snowing all night... However, KAIRA was observing as usual and the beamlet statistics indicate a very nice set of data!