https://youtu.be/B_c8kYRjVpQ/
Lisa Haven- on U.K 's 12 hour warning report.

Forget Asteroids, Worry about solar flares

http://www.express.co.uk/news/science/595153/Forget-asteroids-Solar-storm-could-cause-apocalypse-on-Earth-with-just-12-hours-warning/

New Report says- only a 12 hour warning can be given

http://www.techtimes.com/articles/73382/20150731/new-report-says-planet-earth-only-has-12-hour-warning-period-to-prepare-for-massive-solar-eruptions.htm/

Power loss, aviation disruption, etc..

http://www.rt.com/uk/311113-solar-storm-power-loss-radiation/
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https://en.m.wikipedia.org/wiki/Solar_flare/

Solar flare

For the class of stars that undergo similar phenomena, see flare star.
"Sun flare" redirects here. For the rose variety, see Rosa 'Sun Flare'.

On August 31, 2012 a long prominence/filament of solar material that had been hovering in the Sun's atmosphere, the corona, erupted out into space at 4:36 p.m. EDT.

File:Solar Blast.oggPlay media
Solar flare and its prominence eruption recorded on June 7, 2011 by SDO in extreme ultraviolet
File:The Truth About 2012 Solar Storms.ogvPlay media
Heliophysicist Alex Young from NASA Goddard Space Flight Center's predictions for solar activity in 2012.
File:Evolution of Magnetism on the Sun.ogvPlay media
Evolution of magnetism on the Sun.
A solar flare is a sudden flash of brightness observed over the Sun's surface or the solar limb, which is interpreted as a large energy release of up to 6 × 1025 joules of energy (about a sixth of the total energy output of the Sun each second or 160,000,000,000 megatons of TNT equivalent, over 25,000 times more energy than released from the impact of Comet Shoemaker–Levy 9 with Jupiter). They are often, but not always, followed by a colossal coronal mass ejection.[1] The flare ejects clouds of electrons, ions, and atoms through the corona of the sun into space. These clouds typically reach Earth a day or two after the event.[2] The term is also used to refer to similar phenomena in other stars, where the term stellar flare applies.

Solar flares affect all layers of the solar atmosphere (photosphere, chromosphere, and corona), when the plasma medium is heated to tens of millions of kelvin, while the electrons, protons, and heavier ions are accelerated to near the speed of light. They produce radiation across the electromagnetic spectrum at all wavelengths, from radio waves to gamma rays, although most of the energy is spread over frequencies outside the visual range and for this reason the majority of the flares are not visible to the naked eye and must be observed with special instruments. Flares occur in active regions around sunspots, where intense magnetic fields penetrate the photosphere to link the corona to the solar interior. Flares are powered by the sudden (timescales of minutes to tens of minutes) release of magnetic energy stored in the corona. The same energy releases may produce coronal mass ejections (CME), although the relation between CMEs and flares is still not well established.

X-rays and UV radiation emitted by solar flares can affect Earth's ionosphere and disrupt long-range radio communications. Direct radio emission at decimetric wavelengths may disturb the operation of radars and other devices that use those frequencies.

Solar flares were first observed on the Sun by Richard Christopher Carrington and independently by Richard Hodgson in 1859[3] as localized visible brightenings of small areas within a sunspot group. Stellar flares can be inferred by looking at the lightcurves produced from the telescope or satellite data of variety of other stars.

The frequency of occurrence of solar flares varies, from several per day when the Sun is particularly "active" to less than one every week when the Sun is "quiet", following the 11-year cycle (the solar cycle). Large flares are less frequent than smaller ones.

On July 23, 2012, a massive, and potentially damaging, solar superstorm (solar flare, coronal mass ejection, solar EMP) barely missed Earth, according to NASA.[4][5] There is an estimated 12% chance of a similar event occurring between 2012 and 2022.[4]

So.....I guess this means we should all wear SPF 100,000 lotion at all times.

Sounds kinky.

Solar flares happen all the time. Some are big, most are small by comparison. The problem is that a big one, that happened to point directly at Earth, could cause enormous damage. A big one hit us in 1859.

"Ice cores containing thin nitrate-rich layers have been analysed to reconstruct a history of past solar storms predating reliable observations. Data from Greenland ice cores, gathered by space scientist Kenneth G. McCracken[13] and others, show evidence that events of this magnitude—as measured by high-energy proton radiation, not geomagnetic effect—occur approximately once per 500 years, with events at least one-fifth as large occurring several times per century.[14] More recent work by the ice core community shows that nitrate spikes are not a result of solar energetic particle events, so use of this technique is in doubt. Beryllium-10 and carbon-14 levels are considered to be more reliable indicators by the ice core community.[15] These similar but much more extreme cosmic ray events may originate outside the solar system and even outside the galaxy. Less severe storms have occurred in 1921 and 1960, when widespread radio disruption was reported. The March 1989 geomagnetic storm knocked out power across large sections of Quebec. On July 23, 2012 a "Carrington-class" Solar Superstorm (Solar flare, Coronal mass ejection, Solar EMP) was observed; its trajectory missed Earth in orbit. Information about these observations was first shared publicly by NASA on April 28, 2014."

That wouldn't be a problem considering an ice age in the very near future