Storms
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Windsock

Tornado touches down near nuclear plant outside Moscow

Amateur footage captures a tornado ripping through residential areas 110km southwest of Moscow on Thursday. This is the second twister to hit Russia in a week, destroying vehicles and leaving houses and business properties damaged. Trees and electricity poles were ripped up, leaving local residents without power. There have been no reports of serious injuries as a result of the storm


Cloud Precipitation

Heavy rain and flooding swamp city of San Antonio, TX - one dead, scores rescued - over 12 inches of rain in 24 hours


The wet weather plaguing many parts of the U.S. this holiday weekend has turned fatal in sodden San Antonio. One person is dead, another is missing and nearly a hundred more have been rescued as heavy rain has pummeled the Texas city, causing flash flooding. The majority of rescues were people trapped in their vehicles in low-lying areas of the city, San Antonio Fire Department spokesman Christian Bove told NBC News. Bove confirmed one fatality thus far, a 29-year-old woman who was trapped in her vehicle and tried to escape the rising water by climbing onto the car's roof. She was washed away, and her body was found down the road against a fence. A man who had been trapped in his vehicle is unaccounted for. Weather Channel Meteorologist Nick Wiltgen said San Antonio received 12.16 inches of rain in the 24 hours ending at 11 a.m. Central Time on Saturday. That is just shy of the 24-hour record for the city of 13.35 inches in October 1998. - NBC News

Cloud Lightning

Wild hurricane season predicted - Three to six 'major' storms could emerge this year

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© Alan Diaz/AP/FileJames Franklin, Branch Chief of Hurricane Forecast Operations, points to a weather satellite map as he talks to a reporter at the National Hurricane Center in Miami, April 4.
The 2013 Atlantic hurricane season, which begins June 1, is shaping up to deliver above-normal activity again this year, according to several seasonal forecasts. Indeed, the season could be extremely active, according to Kathryn Sullivan, acting administrator of the National Oceanic and Atmospheric Administration (NOAA).

Forecasters at the agency's Climate Prediction Center anticipate from 13 to 20 tropical storms over the six-month season. Of those, between seven and 11 are expected to become hurricanes, with three to six of the hurricanes expected to reach "major" status, meaning they host maximum sustained winds topping 111 miles an hour.

The federal forecast, released Thursday afternoon, brackets other seasonal outlooks that also point to a busy season.

In April, for instance, researchers at Colorado State University in Fort Collins released their initial forecast for 2013, which included 18 tropical storms, of which nine are expected to become hurricanes. Four could become major hurricanes.

Cloud Precipitation

Oklahoma tornadoes: Flash floods hit the greater Oklahoma City metro area

A severe, slow-moving storm has hit the Greater Oklahoma City Metro Area. Several roads are closed and more are expected to be closed. According to a May 23 report by KWTV Channel 9 News in Oklahoma City, roads in both Oklahoma City and Norman have been closed.

According to live reports by KWTV Channel 9 News, cars are currently stuck in water on the streets of Mustang. Mustang is southwest of Oklahoma City and northwest of Moore. Those live reports are also showing streets flooding in Bethany, which is northwest of Oklahoma City and Moore.

View slideshow: Flash Flooding

Moore, which is between Oklahoma City and Norman, is also being hit with the storm. Moore is the city that was struck by the EF5 tornado on Monday. Recovery and relief efforts in Moore are being severely hindered, if not completely stopped, due to this latest storm.

Cloud Lightning

Devastating tornadoes plague U.S. history

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© Reuters / Richard RoweA huge tornado approaches the town of Moore, Oklahoma, near Oklahoma City, May 20, 2013

As the displaced residents of the Oklahoma City suburbs came to terms with the devastation around them Monday night pundits were already speculating that the tornado was one of the worst to ever hit the US, a dubious distinction for the newly homeless.

The most destructive twister struck Ellington, Missouri at approximately 1:01 pm on March 18, 1925.The Great Tri-State Tornado traveled through Missouri before entering Illinois and finally dissipating in rural Indiana more than three hours after the vortex was first spotted.

At least 695 people were killed in the Tri-State tornado with another 2,027 injured and $16.5 million in damage (over $1.4 billion in today's dollars). The tornado registered as an F5, the highest possible on the Fujita scale. Unfortunately, like Monday's tragedy in Oklahoma, areas with schools were the worst hit, with nine in all being demolished.

Cloud Grey

Survivors pulled from Oklahoma tornado debris as toll falls - lowering deaths to 24

Emergency workers pulled more than 100 survivors from the rubble of homes, schools and a hospital in an Oklahoma town hit by a powerful tornado, and officials lowered the death toll from the storm to 24, including nine children.

The 2-mile (3-km) wide tornado tore through Moore outside Oklahoma City on Monday afternoon, trapping victims beneath the rubble, wiping out entire neighborhoods and tossing vehicles about as if they were toys.

Seven of the nine children who were killed died at Plaza Towers Elementary School, which took a direct hit, but many more survived unhurt.
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© REUTERS/Gene Blevins People look at the destruction after a huge tornado struck Moore, Oklahoma May 20, 2013.
"They literally were lifting walls up and kids were coming out," Oklahoma State Police Sergeant Jeremy Lewis said. "They pulled kids out from under cinder blocks without a scratch on them."

The Oklahoma state medical examiner's office said 24 bodies had been recovered from the wreckage, down from the 51 they had reported earlier. The earlier number likely reflected some double-counted deaths, said Amy Elliott, chief administrative officer for the medical examiner.

"There was a lot of chaos," she said.

Cloud Grey

Moore, Oklahoma - Incredible tornado aftermath images

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Additional Images - a collection of photos from photographers who were in the Oklahoma City area on Monday and Tuesday.

Cloud Grey

Vast Oklahoma tornado kills at least 51

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© Sue Ogrocki/Associated PressA child was pulled from the rubble of the Plaza Towers Elementary School in Moore, Okla., on Monday.
A giant tornado, a mile wide or more, killed at least 51 people as it tore across parts of Oklahoma City and its suburbs Monday afternoon, flattening homes, flinging cars through the air and crushing at least two schools packed with children.

As the injured began flooding into hospitals, the authorities said many people remained trapped, even as rescue workers were struggling to make their way through debris-clogged streets to the devastated suburb of Moore, where much of the damage occurred.

Cloud Grey

Massive tornado rips through Oklahoma City suburbs - emergency issued

A tornado emergency was issued for the south side of the Oklahoma City metro area, Monday afternoon.This is a rare warning from the weather service, which says it issues one "when a severe threat to human life and catastrophic damage from a tornado is imminent or ongoing." The National Weather Service in Norman, Oklahoma is tweeting updates. At 4:22 p.m. ET. they tweeted:
"the tornado is so large you may not realize it's a tornado. If you are in Moore, go to shelter NOW!"
This story is breaking. We'll update this post as we get more. KFOR is streaming its live coverage.

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Update at 4:44 p.m. ET. Devastated Neighborhoods:

Helicopter images of Moore, Oklahoma from KFOR show tracts of devastated neighborhoods. The images show homes missing their roofs, some of them completely leveled.

The reporter on the helicopter said one school was razed by a mile-wide tornado. KFOR showed people walking listlessly through the streets, surveying the damage and reuniting with their families.

Update at 4:38 p.m. ET. Reminiscent Of 1999 Tornado:

Kurt Gwartney of NPR member station KGOU in Oklahoma City said one of the issues with today's tornadoes is that people are at work and school.

"What we're seeing from helicopter coverage," Gwartney tells our Newscast unit, "is very reminiscent of the May 1999 tornado that killed lots of people especially in the Moore area of the Oklahoma City metro.

A report from USA Today at time, put that 1999 tornado's top winds at 318 mph.

Cloud Lightning

Weird gravity waves pulse from a tropical cyclone

Tropical Cyclone Mahasen
© NASA/NOAANighttime image of southern India and Tropical Cyclone Mahasen.
Last Monday, May 13, the Suomi NPP satellite captured a fascinating image of Tropical Cyclone Mahasen as it moved northeast over the Bay of Bengal. The clouds of the storm itself weren't optically visible in the darkness of a nearly new Moon, but lightning flashes within it were... as well as the eerie ripples of atmospheric gravity waves spreading outwards from its center.

According to the Space Physics Research Group at the University of California, Berkeley:
Gravity waves are the oscillations of air parcels by the lifting force of bouyancy and the restoring force of gravity. These waves propagate vertically as well as horizontally, and actively transport energy and momentum from the troposphere to the middle and upper atmosphere. Gravity waves are caused by a variety of sources, including the passage of wind across terrestrial landforms, interaction at the velocity shear of the polar jet stream and radiation incident from space. They are found to affect atmospheric tides in the middle atmosphere and terrestrial weather in the lower atmosphere. (Source)
Atmospheric gravity waves aren't to be confused with gravitational waves in space, which are created by very dense, massive objects (like white dwarf stars or black holes) orbiting each other closely.