malto1971@
00sabato 31 dicembre 2011 23:35
allego il comuinicato di oggi dal sito spaceweather.com
SUDDEN IONOSPHERIC DISTURBANCE: Today around 1320 UT, a wave of ionization swept through the high atmosphere over Europe after sunspot AR1389 unleashed another M2-class solar flare. "There was a very clear sudden ionospheric disturbance on my VLF radio instruments," reports Rob Stammes, who sends these data from the Polar Light Center in Lofoten, Norway:
"The sun is below the horizon where we are located north of the Arctic Circle," says Stammes. "This event shows we still have some contact with the sun."
NOAA forecasters estimate a 40% chance of more M-flares during the next 24 hours. There is also a 5% chance of X-flares. Solar flare alerts: text, voice.