Auroras tonight, and Wednesday?

Looks like it. This was Iowa from the early morning hours today:



Look up! Another solar storm may supercharge auroras Wednesday

While a "severe" solar storm that sparked dazzling auroras around the world on Monday through Tuesday morning is dying down now, skywatchers shouldn't stop looking up quite yet.

Another potentially powerful solar tempest is expected to impact Earth on Wednesday into Thursday, and it could create more amazing auroras for people in the Northern and Southern Hemispheres.

In particular, the next solar storm is especially well aimed to enhancing aurora activity over North America, according to experts at the National Space Weather Prediction Center (SWPC) in Boulder, Colorado.

Monday's solar storm hit the G4 or "severe" level, a relatively rare class of storm that can create bright auroras in relatively low latitudes. Such G4 storms — the rating scale goes up to G5 — can also cause problems with power grids on Earth and harm satellites in space.

And another storm of that severe magnitude is likely on its way to Earth now.

Scientists at the SWPC are anticipating that the solar storm predicted to arrive Wednesday could, yet again, produce beautiful auroras in relatively low latitudes.

At the moment, the SWPC is predicting a G3 or "strong" storm on Wednesday and Thursday, but that was the forecast for Monday, as well. [...]

See the whole article for embedded links, photos, videos and more.

For more technical details, and an Aurora Prediction map, see the NOAA website: http://www.swpc.noaa.gov/

   

Dramatic Aurora seen in Oregon last Sunday

Auroral Lights Color the Skies

A double-burst of solar particles sparked auroral lights over the weekend, as expected — but at least in some parts of the world, the colors were not what you'd expect. Instead of the typical greenish glow, observers reported seeing reds, pinks, violets and even blues.

"It's been many years since I saw the blue in our auroras, but Saturday night they came back," John Welling reported in a note accompanying the photo he posted to SpaceWeather.com.

Pinks, reds and blues also dominated the scene captured on camera early Sunday by Brad Goldpaint, from a vantage point above Oregon's Crater Lake. Goldpaint says the opportunity came about "by pure coincidence."

"Capturing this famous light show had been a dream of mine for several years, but I could not have imagined the lights showing up in my own backyard!" Goldpaint wrote in an email.

The colors of the aurora depend on the wavelength of the light emitted when fast-moving, electrically charged particles from the sun interact with different types of atoms and ions in Earth's upper atmosphere. If the particles hit mostly oxygen atoms, the light will be in the greenish-yellowish-reddish range. Collisions with nitrogen atoms produce the blue, purple and deep red hues.

The altitude of the auroral glow also affects the color: At altitudes between 60 and 120 miles, the oxygen emissions tend toward the green side of the spectrum. At higher altitudes, you'll see more red. Blend all those colors, and you get a beautiful, wide-ranging palette. [...]

The site has more photos, and some video.
     

Auroras seen over more than half the US States

Green and red ones. On Monday evening, October 24th:



Strange solar storm sparks northern lights that dip into Deep South for a surprise sky show

     

Space Weather: Aurora as seen from Space

Recent solar weather has been stimulating Aurora's on earth. This video from the International Space Station shows us the view from above the earth's atmosphere:


Amazing... and stunningly beautiful.

WATCH: An unusual view of the Aurora Australis, from space

[...] This weird, gripping shot of earth was recorded on Sept. 17, 2011, as a solar storm battered the atmosphere with ionizing particles. Waves of Ecto-Cooler-green luminescence shimmer over the surface of the planet like an iridescent oil slick. The video was shot while the Space Station passed south of Madagascar to north of Australia over the Indian Ocean, thus these lights are known as the Aurora Australis.

The sun has been frantically blatting with these plasma outbursts over the past 36 hours, an indication that it is ascending toward the peak of its 11-year solar cycle. Yesterday, the star unleashed one of the largest class of flares, an X-1, with a corresponding strong radio blackout. Here's what that looked like. NOAA's Space Weather Prediction agency is advising heavenly forecasters that more solar ejections could be in the forecast from the cursed Region 1302: [...]

Read the whole thing. With embedded links.
     

Tottenham, and Riots and Geomagnetic Storms.

I've posted before about Geomagnetic storms/solar flares and riots. Coincidentally, the recent riots in Tottenham seem to coincide with this weekends solar weather:

BIG SUNSPOT GETS BIGGER; WEEKEND AURORAS; NIGHT-TIME SOLAR RADIO BURST

BIG SUNSPOT GETS BIGGER: Behemoth sunspot 1263 has almost doubled in size this weekend. A 28-hour movie from NASA's Solar Dynamics Observatory shows the spot developing a tail that has added some 50,000 km of length to the active region. This development may increase the likelihood of a strong flare. Images: #1, #2, #3

WEEKEND AURORAS: A widespread display of auroras erupted late Friday, Aug. 5th, when a double-CME hit Earth's magnetic field and sparked a G4-category geomagnetic storm. "It was the most impressive display I've seen in years," reports Lance Taylor of Edmonton, Alberta. "From 10:00 PM on Friday to 3:00 AM on Saturday, the sky was pulsing from horizon to horizon in every direction." He took this picture during the most intense phase of the storm:



The show was not restricted to Canada. Northern Lights spilled across the border into the United States as far south as Utah, Colorado, and Nebraska. (Note: The faint red lights photographed in Nebraska are typical of low-latitude auroras during major geomagnetic storms.) Observers in Europe as far south as England, Germany and Poland also witnessed a fine display. Browse the gallery for more examples. [...]

Follow the link to the original article, which has many embedded links, and for information about the night-time solar radio burst, which has not happened since 1958.
     

Solar Weather Update, March 14th

From SpaceWeather.com

SUBSIDING STORMS: The geomagnetic storms of March 10th and 11th are subsiding. Earth's magnetic field began shaking on March 10th in response to a CME impact; the reverberations continued for more than 24 hours. In Sweden the auroras were so bright, they competed with campfires:

"When I was sitting next to the fire and had the Aurora dancing above me, I felt like it could have been 100 years ago," says photographer Peter Rosén in Sweden's Abisko National Park. "I wonder what people thought when they saw this phenomenon in centuries past. Old stories say that the Sami people believed the Aurora was home for the spirits of the dead, and that we should show respect when the lights appeared."

They could appear again, soon. A new solar wind stream is buffeting Earth's magnetic field today, and NOAA forecasters estimate a 10% chance of severe geomagnetic storms. Get your aurora alerts here!

Sunspots are continuing. Solar storms, not so much. For now.

And a bit of solar storm history, with contemporary relevance:

CAUTIONARY TALE: This week marks the 22nd anniversary of the Quebec Blackout. On March 13, 1989, a geomagnetic storm brought down Hydro-Québec's power grid and blacked out the entire province. Brownouts and other power irregularities were experienced across much of North America. Today's "smart power grids" are even more vulnerable because they are interconnected by high voltage lines spanning thousands of miles. In good times, this arrangement allows utilities to guide power wherever it might be needed. During geomagnetic storms, however, it spreads the danger of a blackout far and wide. What we need is a Solar Shield.

The Solar Shield article is interesting, it mentions the Quebec event of March 13th 1989, and other storms like the Carrington event of 1859. The Shield is a warning system that interprets solar data and alerts utility companies to act accordingly.


Also see:

The Solar Storm that hit Quebec in 1989

Solar Flare: The "Carrington Event" of 1859

Our growing reliance on satellite technology, and it's vulnerability to solar flares. Why it matters.