Earth & Space Weather

Solar Dynamics Observatory: Three Years of Sun in Three Minutes

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The Watchers - 23 April 2013 - by Adonai

In the three years since it first provided images of the sun in the spring of 2010, NASA’s Solar Dynamics Observatory (SDO) has had virtually unbroken coverage of the sun’s rise toward solar maximum, the peak of solar activity in its regular 11-year cycle. This video shows those three years of the sun at a pace of two images per day. SDO’s Atmospheric Imaging Assembly (AIA) captures a shot of the sun every 12 seconds in 10 different wavelengths. The images shown here are based on a wavelength of 171 Angstroms, which is in the extreme ultraviolet range and shows...

 

In the three years since it first provided images of the sun in the spring of 2010, NASA’s Solar Dynamics Observatory (SDO) has had virtually unbroken coverage of the sun’s rise toward solar maximum, the peak of solar activity in its regular 11-year cycle. This video shows those three years of the sun at a pace of two images per day.
SDO’s Atmospheric Imaging Assembly (AIA) captures a shot of the sun every 12 seconds in 10 different wavelengths. The images shown here are based on a wavelength of 171 Angstroms, which is in the extreme ultraviolet range and shows solar material at around 600,000 Kelvin. In this wavelength it is easy to see the sun’s 25-day rotation as well as how solar activity has increased over three years.

Volcanic activity worldwide 22 Apr 2013: Stromboli, Santa María / Santiaguito, Pacaya, Fuego, Popoc...

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Volcano Discovery Monday Apr 22, 2013 18:23 PM

Webcam image of the crater area of Stromboli (INGV)

Webcam image of the crater area of Stromboli (INGV)


Current seismic recording from Nevado del Ruiz (OLL station, INGEOMINAS)

Current seismic recording from Nevado del Ruiz (OLL station, INGEOMINAS)

 

Stromboli (Eolian Islands, Italy): Magma stands high inside the conduits. A small overflow is occurring from the NE crater. The lava flow reaches about 100 meters length at the moment. Tremor and explosion signals are moderate to elevated.

More Rain Headed for Midwest Flood Zone

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Weather.com - 4/22/13, AP and Weather.com

Louisiana, Mo.

A restaurant sits surrounded by floodwater Saturday, April 20, 2013, in Louisiana, Mo. AP Photo/Jeff Roberson
 

GRAFTON, Ill. (AP) -- The Mississippi River is topping out at some problematic spots, but there is growing concern that spring floods are far from over.

The river was at or near crest at several places Sunday between the Quad Cities and near St. Louis. Some towns in the approximate 100-mile stretch of river from Quincy, Ill., to Grafton, Ill., reached 10-12 feet above flood stage.

More: Weather.com.

Winter Storm Zeus: More Rockies, Midwest Snow

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Weather.com - 4/22/13, Chris Dolce

Joel Krochalk, clears his driveway Friday morning, April 19, 2013 while surrounding by deeply drifted snow in his and neighboring yards, in Duluth, Minn. (AP Photo/The Duluth News-Tribune, Bob King)
 

We are now a month past the official start of spring and some parts of the central United States can't shed the feeling of winter. 

Specifically, in the last two weeks we've seen three named winter storms (Walda, Xerxes, Yogi) spread significant snow in parts of the Rockies, Plains and Upper Midwest.

Video and more: Weather.com

New: Midwest Floods Turn Deadly

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Weather.com - 4/21/13

Louisiana, Mo.

Chad Keedy and stepdaughter Jordan DeBolt, 15, of Chillicothe, Ill., paddle through flood waters in their neighborhood along Oak Lawn Street in Chiilicothe, Ill., on Saturday, April 20, 2013, as the Illinois River rises due to heavy rains earlier in the week. (AP Photo/Peoria Journal Star, Ron Johnson)

 

Those fighting floods in several communities along the Mississippi River were mostly successful Sunday despite the onslaught of water.

The surging Mississippi was at or near crest at several places from the Quad Cities south to near St. Louis -- some reaching 10-12 feet above flood stage. Problems were plentiful: Hundreds of thousands of acres of swamped farmland as planting season approaches; three people died; roads and bridges closed, including sections of major highways like U.S. 61 in Iowa and Missouri and crossings at Quincy, Ill., and Louisiana, Mo.

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