Solar storms

With falling solar activity, the likelihood of extreme solar storms is falling. I see the Southgate news site reports that research has indicated the earth suffered a couple of destructive solar storms more than 1000 years ago. If these happened today they would pose a real threat to power supplies, satellites and our whole way of life in the 21st century. We cannot ever be complacent as these events often happen "out of the blue".

See http://www.southgatearc.org/news/2015/october/extreme_solar_storms.htm#.VjCdPCtEd80  .

Protecting power grids from solar storms

NASA Science News reports:

"Every hundred years or so, a solar storm comes along so potent it fills the skies of Earth with blood-red auroras, makes compass needles point in the wrong direction, and sends electric currents coursing through the planet's topsoil. The most famous such storm, the Carrington Event of 1859, actually shocked telegraph operators and set some of their offices on fire. A 2008 report by the National Academy of Sciences warns that if such a storm occurred today, we could experience widespread power blackouts with permanent damage to many key transformers."

There are plans afoot to create an early warning system to protect the US grid system in such events.

Solar activity progress

See http://solarscience.msfc.nasa.gov/images/ssn_predict_l.gif

Sunspot cycle 24 does, at last, show signs of gathering some momentum. Despite the ups and downs in the sunspot count, there is an inexorable climb now towards the next maximum, probably on 2012 or 2013. This autumn we should start to get the regular 10m transatlantic openings again which, to me, are a sign that the new cycle is here and "good" for several years. In the press there's been some alarmist headlines about solar storms around the sunspot maximum knocking out swathes of the power systems and satellites around the world. Certainly the danger exists, but surely it is a manageable risk with planning and contingencies in place? See news.com.au on this subject.