X-FLARE! Big sunspot AR1520 unleashed an X1.4-class solar flare on July 12th. Because the sunspot is directly facing Earth, everything about the blast was geoeffective.

 

 

REVISED FORECAST: The CME launched toward Earth by yesterday's X-flare is moving faster than originally thought. Analysts at the Goddard Space Weather Lab have revised their forecast accordingly, advancing the cloud's expected arrival time to 09:17 UT (5:17 am EDT) on Saturday, July 14th. Weekend auroras are likely. Aurora alerts: text, voice.

X-FLARE! Big sunspot AR1520 unleashed an X1.4-class solar flare on July 12th. Because the sunspot is directly facing Earth, everything about the blast was geoeffective. For one thing, it hurled a coronal mass ejection (CME) directly toward our planet. According to a forecast track prepared by analysts at the Goddard Space Weather Lab, the CME will hit Earth on July 14th around 09:17 UT (+/- 7 hours) and could spark strong geomagnetic storms.

The explosion also strobed Earth with a pulse of extreme UV radiation, shown here in a movie recorded by NASA's Solar Dynamics Observatory:

 

The UV pulse partially ionized Earth's upper atmosphere, disturbing the normal propagation of radio signals around the planet. Monitoring stations in Norway, Ireland and Italy recorded the sudden ionospheric disturbance.

Finally, solar protons accelerated by the blast are swarming around Earth. The radiation storm, in progress, ranks "S1" on NOAA space weather scales, which means it poses no serious threat to satellites or astronauts. This could change if the storm continues to intensify. Stay tuned.

Click here to see the blast:http://www.spaceweather.com/

Views: 87

Comment by jim on July 13, 2012 at 9:22pm

These are the kind of flares X-CLASS that will put us back into the stone age ! i'll keep a close eye on this one and hope our power grids hold!

Comment by HwΩΩd♪ on July 13, 2012 at 9:25pm

I'd say that would even out the playing field a bit eh?

Comment by jim on July 13, 2012 at 11:14pm

It just goes to show us just how easy it would be to drop everyone to their knees and struggle to survive

puts things in perspective doesn't it.

Comment by jim on July 14, 2012 at 7:12pm

OK vincent i'll stay on top of them I think maybe the 27 th of july will be the next big thing maybe. london or bust ! : )

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