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Northern lights viewed in northern Europe

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Aurora Borealis, also known as Revontulet (I think) in Finland.
- Yowbarb


HALLOWEEN FLARES: After two days of quiet, big sunspot 1117 is once again crackling with solar flares. Magnetic fields around the active region became unstable on Oct. 31st, unleashing a C2-class flare at 0318 UT and a C6-class flare at 0431 UT. Stay tuned for movies.

AMAZING HALOES: Yesterday in Kittilä, Finland, photographer Sauli Koski witnessed a brief but unforgettable display when the rising sun shone through a morning cloud of wintery ice crystals. Fortunately he had his camera:
"These were the best ice haloes I have ever seen," says Koski. "They were there for only about 10 minutes and then gone. What a delight!"

"It was a gem of a halo display," agrees atmospheric optics expert Les Cowley. "Koski saw at least 13 different arcs. Some, including two types of Parry arc, are rare. Three more arcs, the helic, Parry supralateral arc, and Moilanen arc are exceedingly rare. See the key for the arc identities. With winter fast approaching, now is the time for outstanding halos."

Yowbarb:  Space Weather

AURORA WATCH: A solar wind stream is buffeting Earth's magnetic field, sparking geomagnetic activity around the Arctic Circle. "I was driving through the countryside near Tromsø, Norway, on Nov. 14th when bright auroras burst through the clouds," reports Ole Christian Salomonsen. He quickly pulled over to take this picture:

"The lights were amazing--green, white, purple, moving fast and strong," says Salomonsen. "I call the shot 'Colorful Clouds.'"
NOAA forecasters estimate a 40% chance of geomagnetic activity during the next 24 hours. High latitude sky watchers should remain alert for auroras.

Øystein Lunde Ingvaldsen,
Bø in Vesterålen, Norway
Nov. 14, 2010 #1, #2, #3, more

Also by Ingvaldsen. More lovely photographs, also by other photopgraphers, on
 - Yowbarb

Øystein Lunde Ingvaldsen,
Bø in Vesterålen, Norway
Nov. 14, 2010

Well, this is not a photo of northern lights, but it is beautiful.
- Yowbarb

This was the most spectacular sun halo I have seen in recent years from Stockholm," says photographer Peter Rosén. "It was visible for the whole (short) day." In addition to the sundogs, upper tangent arc, and 22° halo captured in the snapshot above, Rosén also witnessed "a 46° outer halo and a circumzenithal arc as ice crystals blew in gusts across the sun. What a show!"

Now is the time of year when low-hanging suns shine through high-floating ice to produce such vistas. People of the northern hemisphere should be alert for halos.

more images: from Jörgen Blom of Stockholm, Sweden; from Merelyn Davis of Burbank, CA; from Paul Ballard of Kungälv, Sweden; from Gary Brekke of Fargo, ND; from Shawn Johnston of Fargo, ND; from Joanna Fengler of Poznan, Poland


Jan 07 Update 

GEOMAGNETIC STORM: As expected, a solar wind stream hit Earth's magnetic field during the early hours of Jan. 7th. The impact sparked a G1-class (Kp=5) geomagnetic storm and bright auroras around the Arctic Circle.
Spaceweather posted images from Kjetil Skogli, Bernt Olsen of Tromsø, Frank Olsen  -Tromsø, Norway
Image below of from Frank Olsen. - Yowbarb 


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