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View Full Version : Weekend Aurora Alert: The Sun Lets Loose an Earth-Directed CME



Fraser
2013-Apr-11, 04:10 PM
The Solar Dynamics Observatory captured this view as the Sun let loose with its biggest solar flare of the year so far. Its not a real big one — a mid-level flare classified as an M6.5 but an associated coronal mass ejection is heading towards Earth and could spur some nice auroae by this [...]

More... (http://www.universetoday.com/101388/weekend-aurora-alert-the-sun-lets-loose-an-earth-directed-cme/)

beskeptical
2013-Apr-11, 04:48 PM
Grumble grumble, the weekend forecast here is rain/clouds. Grumble grumble......

beskeptical
2013-Apr-13, 11:18 PM
Sudden impulse detected.

The shock passage is detected by satellites so the CME is a bit less than an hour from impact.

http://www.swpc.noaa.gov/alerts/warnings_timeline.html

IP Shock Passage Observed: 2013 Apr 13 2215 UTC


It's heerree. :)

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2013 Apr 13 2255 UTC

At the satellite level but minutes away:
http://www.swpc.noaa.gov/rt_plots/mag_3d.html

The GOES Hp plot contains the 1-minute averaged parallel component of the magnetic field in nanoTeslas (nT), as measured at GOES-13 (W75) and GOES-15 (W89). The Hp component is perpendicular to the satellite orbit plane and Hp is essentially parallel to Earth's rotation axis.


The Boulder (http://www.swpc.noaa.gov/rt_plots/bou_12h.html)Magnetometer.

There's one in Norway too, I think.


(Not used to the edit feature yet.)

KaiYeves
2013-Apr-14, 12:28 AM
Sigh... Boston is cloudy.

beskeptical
2013-Apr-14, 12:35 AM
I'm watching a hailstorm out my window right now. :D

But I'm hoping there might be breaks in the clouds by dark.

There was also an M3 after the M6 that's hitting now. Not sure if the CME was Earth directed though.

beskeptical
2013-Apr-14, 06:35 PM
She were a dud (unless you live very far north or south). :( But there might be another one behind her, that M3. But I suspect it was even less Earth directed.

Oh well, I'm a positive thinker, on to solar maximum.

beskeptical
2013-May-24, 10:38 PM
Another CME, another storm in progress right now. If it's dark where you are, and the skies clear, and you are north of the 45th parallel, or the equivalent in the southern hemisphere, step outside and look toward the poles.I'm hoping the storm lasts a few more hours, and the clouds dissipate. But the odds are not forever in my favor. http://www.writingforums.org/images/skins/cloudskin/smilies/smile.gif