The Daily Croissant - Filed under 'Weather'

Von Kármán Vortices in the Greenland Sea
- 18 Apr 2012
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- April 18 2012 Clouds Phenomena Vortices Weather
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"In the image above, an isolated Norwegian territory in the North Atlantic Ocean, called Jan Mayen Island, is responsible for the spiraling cloud pattern. The unique flow occurs when winds rushing from the north encounter Beerenberg Volcano, a snow-covered peak on the eastern end of the island that rises 2.2 kilometers (1.4 miles) above the sea surface. As winds pass around the volcano, the disturbance in the flow propagates downstream in the form of a double row of vortices that alternate their direction of rotation."

via earthobservatory.nasa.gov
Historic Heat Anomolies and Almost Real-time Winds in North America
- 31 Mar 2012
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- Anomolies March 31 2012 Temperature United States Weather Wind
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"A huge, lingering ridge of high pressure over the eastern half of the United States brought summer-like temperatures to North America in March 2012. The warm weather shattered records across the central and eastern United States and much of Canada."

via earthobservatory.nasa.gov

"An invisible, ancient source of energy surrounds us—energy that powered the first explorations of the world, and that may be a key to the future. This map shows you the delicate tracery of wind flowing over the US right now."

watch the winds blow via hint.fm
Cloudburst in West Texas
- 20 Jan 2012
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- Cloudburst January 20 2012 Texas Thunderstorms Weather
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by Steven L. Templeton

"The photo above shows a cloudburst I observed just before sunset in Jones County, Texas on September 17, 2011. This rain shaft looked more foreboding than was actually the case and indeed any rain in drought-stricken Texas was welcome. January through July of 2011 was the driest six-month period ever recorded in Texas. Additionally, the summer of 2011 was the hottest on record. Convective storms can sometimes produce very localized rains; a deluge in a particular spot but only a few drops just a few hundred yards away."

via epod.usra.edu
“Relámpago del Catatumbo”, the Everlasting Storm
- 4 Jan 2012
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- January 04 2012 Lightning Natural Phenomena Venezuela Weather
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"The mysterious “Relámpago del Catatumbo” (Catatumbo lightning) is a unique natural phenomenon in the world. Located on the mouth of the Catatumbo river at Lake Maracaibo (Venezuela), the phenomenon is a cloud-to-cloud lightning that forms a voltage arc more than five kilometre high during 140 to 160 nights a year, 10 hours a night, and as many as 280 times an hour."

via mytechnologyworld9.blogspot.com

Promotional Video of the "Catatumbo Lightning", tourist icon of the Zulia State,Venezuela. Declared Natural Patrimony of the Nation in 2007; and Natural Heriage of Humanity by UNESCO.
Lenticular Sky at Sunrise
- 26 Dec 2011
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- 25December11 Andes Argentina Clouds Mountains Phenomena South America Sunrise Weather
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Photographer : Hector Fabian Garrido

"The photo above showing a sensational display of lenticular clouds was snapped near La Rioja, Argentina, at the base of the Andes Mountains, on September 9, 2011. I was doing seismic testing just after sunrise and was taken aback by the gold and tawny wave clouds that appeared across much of the sky. These lenticulars took shape to the lee (east) of the Andes, just west of my location -- the Sun was behind the camera. Lenticular clouds are generally orographic in origin, forming in lee waves when air is forced to rise over elevated terrain. On this early spring morning, the smooth structure of the waves, the illumination by the low Sun, and the absence of other types of clouds, gave the sky a surreal look."

via epod.usra.edu
Strange & Shining : Gallery of Mysterious Lights
- 20 Dec 2011
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- 19December11 Anomolies Light Mystery Phenomena Weather
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Solar Pillar Credit: Lars D. Terkelsen | larsdaniel.com

This shot, taken in May 2010 at Nødebohuse, North Zealand, in Denmark, shows a natural phenomenon referred to as a solar pillar. These vertical beams of light areusually created in cold air by ice crystals falling from high clouds. The crystals are sometimes flat, and air resistance will cause them to float flatly, rather than knifing downward on edge. As sunlight reflects off the crystals, the resulting column of light shining up into the sky seems to come from the sun, but in reality it's just a few miles away from the observer.

more via livescience.com
Jumpin' Sundogs, Dancing Clouds
- 12 Nov 2011
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- 11November11 Astronomy Clouds Phenomena Sun Dogs Weather
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"What's happening above those clouds? In the past few years, videos have appeared on the web detailing an unusual but little known phenomenon: rapid light changes over clouds.

Upon inspection and contemplation, a leading hypothesis for its cause has now emerged. In sum, this hypothesis holds that a lightning discharge in a thundercloud can temporarily change the electric field above the cloud where charged ice crystals were reflecting sunlight. The new electric field quickly re-orients the geometric crystals to a new orientation that reflects sunlight differently.

In other words, a lightning discharge can cause a sundog to jump. Soon, the old electric field may be restored, causing the ice crystals to return to their original orientation.

To help this curious phenomenon become better studied, sky enthusiasts with similar jumping or dancing sundog videos are encouraged to share them."

via apod.nasa.gov
The Lofoten Anomalies of Rost, Norway
- 11 Nov 2011
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- 10November11 Anomolies Currents Norway Ocean Weather
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"Despite their location, the Lofoten Islands, tucked inside the Arctic Circle in Norway, rarely dip to violently freezing or typical Arctic weather. Due to a convergence of the Gulf Stream with two underwater currents, the North Atlantic Current and the Norwegian Current, the weather in Lofoten remains anomalously warm. Two cities in Lofoten, Røst and Værøy, have average temperatures above freezing for the entire year."

via atlasobscura.com
Talol, the Mother of Waters, the Caster of Cloud Shadows
- 4 Nov 2011
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- 03November11 Clouds Mountains Phenomena Shadows Sunrise Weather
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"Mt. Rainier has quite a few tricks up its sleeve for adding additional beauty to the Pacific Northwest, from the majestic snow-capped peaks, to the mysterious lenticular cloud displays.
But another trick it pulls off during the fall and winter is to cast a big shadow on a brilliant sunrise.
It only happens when the sun rises farther to the south as we head toward the winter solstice and has to be in the exact position to where Rainier blocks the first rays of morning light."

via komonews.com
Colorado Storm Clouds
- 1 Oct 2011
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- 30September11 Clouds Colorado Landscapes Storms Weather
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by Debi Bratrsovsky

"When I first spotted this storm, 17 mi (27 km) north of Fort Morgan, Colorado, it appeared to be a mesacyclone. However, by the time I gathered my photography equipment and drove toward it, I could tell that it had changed quite a bit and was no longer so threatening. Nonetheless, the way the waning sunlight interacted with the fast moving storm clouds was breathtaking; indigo, ink and violet clouds swirling above a red-rimmed horizon. Note the rain shaft in the distance. Photo taken just before sunset on June 20, 2011."

via epod.usra.edu
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