A particularly useful site that gives a real-time graph of geomagnetic activity as seen from the UK is http://www.dcs.lancs.ac.uk/iono/aurorawatch/. The site will also send a email or text message in the event of major activity. For southern hemisphere information look at http://www.ips.gov.au/Main.php?CatID=4 The site www.spaceweather.com is an excellent source of information on the state of solar activity and also gives warnings about other astronomical events. |