Archive for coronal mass ejection

NOAA forecasters say there is 70% chance of polar geomagnetic storms

Posted in 2017, astronomy, Galaxy with tags , , , , , , , , , , on January 17, 2017 by MARIE EMMANUELLE QUILICHINI

This is a “coronal hole” (CH)–a region where the sun’s magnetic field opens up and allows solar wind to escape.  Material is flowing from this coronal hole at speeds exceeding 650 km/s (1.5 million mph).

NOAA forecasters say there is 70% chance of polar geomagnetic storms on Jan. 18th when a fast-moving stream of solar wind hits Earth’s magnetic field. The Arctic light show, however, could begin even earlier.

A co-rotating interaction region (CIR) just in front of the solar wind stream is expected to reach Earth during the late hours of Jan 17th.

CIRs are transition zones between slow- and fast-moving solar wind. They contain density gradients and shock waves that often spark auroras. Free: Aurora Alerts

The incoming stream of solar wind is flowing from a large hole in the sun’s atmosphere. NASA’s Solar Dynamics Observatory photographed the crescent-shaped structure directly facing Earth on Jan. 17th

More on:

http://spaceweather.com

Sun: Return of The Big Coronal Hole

Posted in 2016, astronomy, Galaxy with tags , , , , , , , , on November 21, 2016 by MARIE EMMANUELLE QUILICHINI

ch_strip2

At the end of October, a hole in the sun’s atmosphere lashed Earth’s magnetic field with solar wind, sparking moderately-strong geomagnetic storms and almost a full week of Arctic auroras.

News flash:  It’s back.  The same “coronal hole” is turning toward Earth again. NASA’s Solar Dynamics Observatory photographed the structure on Nov. 20th.

Coronal holes are regions in the sun’s atmosphere where the magnetic field peels back and allows solar wind to escape.

Since our last encounter with this hole in late October it has been transiting the farside of the sun, carried around by the sun’s 27-day rotation.  Now that it is back we can see that the hole is not quite as large as it was a month ago–but it is still impressive, covering more than 1/4th of the visible solar disk.

More of this article on:

http://spaceweather.com

The sun has unleashed 3 separate solar storms that have combined to smash into Earth’s atmosphere

Posted in 2015, astronomy, Galaxy with tags , , , , , , on June 24, 2015 by MARIE EMMANUELLE QUILICHINI

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Forecasters say the storm will continue tonight, causing the huge aurora to be visible from the Earth’s north. It should be seen in much of Europe, as long as there are no clouds, and may even be visible as far south as the Canadian border with the US.

But the phenomenon could cause problems with electricity supplies here.

The US Government’s Space Weather Prediction Center (SWCP) said: ‘Aurora watchers in North America, especially northern states of the US, should stay alert.  

‘The geomagnetic storm that began on 22 June has reached G4 (Severe) levels once again as of 0513 UTC (0113 EDT) on 23 June. 

‘Solar wind conditions remain highly favourable for continued Strong Geomagnetic storming, with both fast solar wind and strong magnetic fields.’ 

‘This is the very early stages of an event that will play out over many hours, with SWPC forecasting continuing storm level intensities into tomorrow. 

GLOBAL SOLAR ERUPTION ON OCT 25TH 2013

Posted in 2013 with tags , , , , , , , on October 25, 2013 by MARIE EMMANUELLE QUILICHINI

Solar activity is high and intensifying. New sunspot AR1882, which rotated over the sun’s eastern limb earlier today, promptly unleashed an X1-class solar flare, adding to a series of lesser flares already underway from sunspots AR1875 and AR1877. NASA’s Solar Dynamics Observatory recorded a bright flash of extreme UV radiation from the X1 flare, which peaked at 08:01 UT on Oct. 25th:

There may be more to this flare than meets the eye. Watch this movie of the sun’s entire disk. The X1-flare was bracketed by two erupting magnetic filaments, each located hundreds of thousands of kilometers from AR1882. In other words, the X1 flare might have been just one piece of an interconnected global eruption. More flares are in the offing. There are now three sunspot groups on the Earthside of the sun capable of strong eruptions: AR1875, AR1877 and AR1882. NOAA forecasters estimate a 55% chance of M-flares and a 10% chance of X-flares during the next 24 hours. Solar flare alerts: text, voice.

http://spaceweather.com/

 

GEOMAGNETIC STORM: a CME hit Earth’s magnetic field during the early hours of October 2nd

Posted in 2013 with tags , , , , , on October 3, 2013 by MARIE EMMANUELLE QUILICHINI

CME IMPACT, GEOMAGNETIC STORM

http://www.spaceweather.com

As expected, a CME hit Earth’s magnetic field during the early hours of October 2nd, sparking a G2-classgeomagnetic storm. In North America, auroras spilled across the Canadian border into more than a dozen northern-tier US states. Jason Brownlee sends this picture from Bend, Oregon:

“It’s not too often we get to see Northern Lights in Oregon,” says Brownlee. “It made a special appearance last night in the Cascade Mountains. “

The storm has subsided now, but it could flare up again. NOAA forecasters estimate a 50% chance of more polar geomagnetic storms as Earth passes through the wake of the CME on Oct. 3rd. Aurora alerts: textvoice.

Aurora during a geomagnetic storm that was mos...

Aurora during a geomagnetic storm that was most likely caused by a coronal mass ejection from the Sun on 24 May 2010. Taken from the ISS. (Photo credit: Wikipedia)

Geomagnetic Storm In Progress

Red night aurora bursts were seen or photographed in more than half of all US states including Alabama, Wisconsin, New Mexico, Tennessee, Missouri, Illinois, Nebraska, Kentucky, North Carolina, Indiana, Oklahoma, Kansas, Iowa, Maryland, New York, Montana, Ohio, Colorado, Pennsylvania, Washington, Minnesota, Maine, Michigan, Oregon, Arkansas and California.

Posted in Uncategorized with tags , , , , , , , , , , , , , , , , , , , , , , , , , , , , , on October 25, 2011 by MARIE EMMANUELLE QUILICHINI

“Having a solar blast”

Posted in Uncategorized with tags , , , , , , , on June 14, 2011 by MARIE EMMANUELLE QUILICHINI

COMET AND CME : Watch a Comet Dive Into The Sun and Produce a Solar Flare

Posted in Uncategorized with tags , , , , on May 12, 2011 by MARIE EMMANUELLE QUILICHINI

A new NASA project called “Solar Shield” could help keep the lights on North American Power Grid

Posted in Uncategorized with tags , , , , , , , , , , , , , , , , , , on March 14, 2011 by MARIE EMMANUELLE QUILICHINI


Solar Flares : A Second X-Class Flare Erupted on the Sun in less than a month

Posted in Uncategorized with tags , , , , , , , , , , on March 10, 2011 by MARIE EMMANUELLE QUILICHINI

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