Earth & Space Weather

Sky Watching: The Mystery of Double Rainbows

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Weather.com - Chrissy Warrilow, 5/14/13

Niagara Falls are seen with a double rainbow on October 8, 2006, from aboard the Maid of the Mist on the Niagara River. Under the rainbow the American Falls can be seen. (Photo by DON EMMERT/AFP/Getty Images)
 

Double rainbows: If the hope of one pot of gold isn't enough, sometimes Mother Nature gives us the opportunity to pursue two. 

How They Form

The double-dose of atmospheric optimism is a result of optical effects occurring in tandem.

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Updated: Temperature Clash: Record Cold and Warmth

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Weather.com - Chris Dolce, Jon Erdman, 5/15/13

Highs on May 14, 2013
 

You may have heard the cliche "clash of seasons" to describe spring. From a temperature perspective, Monday and Tuesday of this week have displayed an impressive contrast between morning frost and freezes and searing 90s and triple digits across the nation.

Strongest Solar Flare of 2013 Erupts from Sun

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Wunderground.com - Tariq Malik, 5/13/13

This image from NASA's Solar Dynamics Observatory shows a colossal X1.7-class solar flare erupting from the sun at 10:17 p.m. EDT on May 12, 2013 (Mother's Day). It is the strongest solar flare of 2013 so far. NASA/SDO

 

The sun unleashed a colossal Mother's Day solar flare on Sunday (May 12) in what has become the most powerful solar eruption of the year.

The giant solar flare, which registered as one of the largest eruptions the sun can unleash, peaked Sunday night at 10:17 p.m. EDT (and was captured on camera by NASA's Solar Dynamics Observatory. It sparked an hour-long high-frequency radio blackout, according to the Space Weather Prediction Center overseen by the National Oceanic and Atmospheric Administration.

More: Wunderground.com

 

Incurable Disease Threatens U.S. Citrus Crop

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Weather.com - Marc Lallanilla, LiveScience, 5/13/13

Trees infected by citrus greening have yellowing leaves and bitter, discolored fruit. University of California

 

Florida's $9 billion orange crop, the largest in the world after Brazil's, may not survive an incurable disease that threatens to wipe out citrus groves throughout the United States.

The disease, known as "citrus greening" or huanglongbing, is caused by a bacterium, Candidatus Liberibacter asiaticus. The bacteria are spread from tree to tree by a tiny insect called the Asian citrus psyllid, The New York Times reports.

Temperature Clash: Record Cold and Warmth

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Weather.com - 5/13/13, John Erdman

Background

You may have heard the cliche "clash of seasons" to describe spring. From a temperature perspective, Monday and Tuesday of this week offer an impressive contrast between morning frost and freezes and searing 90s and triple digits across the nation.

On Monday morning, new record low temperatures for May 13 were tied or broken in Nashville, Tenn., Toledo, Ohio, Detroit, Mich., Tupelo, Miss. and Marquette, Mich., to name a few locations. Light snow was even reported in Bradford, Pa. and in the Adirondacks of Upstate New York.

Video and more: Weather.com

 

~ Space Weather Update~ X 1 Solar Flare~ STRONGEST FLARE OF THE YEAR

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SUNSET PLANETS: Venus, Jupiter and Mercury are gathering in the western sky for a beautiful sunset conjunction at the end of May. Get ready for a fantastic show. [full story] [video] [photo gallery]

STRONGEST FLARE OF THE YEAR: A sunspot hiding behind the sun's northeastern limb erupted on May 13th at 02:17 UT, producing the strongest solar flare of the year so far. NASA's Solar Dynamics Observatory recorded the extreme UV flash from the X1.7-class eruption:

Coronagraphs onboard the Solar and Heliospheric Observatory (SOHO) tracked a bright CME emerging from the blast site: movie. No planets were in the line of fire. However, the CME appears to be on course to hit NASA's Epoxi and Spitzer spacecraft on May 15th.

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