News / USA

Deadly US Twister Hits 'Tornado Alley'

The storm system that generated an F-4 tornado in Moore, Oklahoma is pictured in this May 20, 2013 NASA handout photo shortly before the tornado struck.
The storm system that generated an F-4 tornado in Moore, Oklahoma is pictured in this May 20, 2013 NASA handout photo shortly before the tornado struck.
VOA News
Monday's deadly tornado in the central U.S. state of Oklahoma struck in an area commonly known as "Tornado Alley" - home to most of the nation's tornadoes.

Tornado Alley is generally seen to span north to south from South Dakota to Texas between the Rocky Mountains and the Appalachian Mountains, but there is no official consensus on the boundaries.

Comparison of Tornado paths in Moore, Oklahoma - May 3, 1999 and May 20, 2013Comparison of Tornado paths in Moore, Oklahoma - May 3, 1999 and May 20, 2013
x
Comparison of Tornado paths in Moore, Oklahoma - May 3, 1999 and May 20, 2013
Comparison of Tornado paths in Moore, Oklahoma - May 3, 1999 and May 20, 2013
The region is susceptible to tornadoes when cold, dry air moving south from Canada meets warm, moist air from the Gulf of Mexico and warm, dry air moving east across the Rockies.  The collision of warm and cold air breeds severe thunderstorms, which spawn tornadoes.

The National Weather Service's Storm Prediction Center says Tornado Alley is a nickname used by the media and stresses it only indicates the area where most tornadoes occur. It says violent or killer tornadoes happen outside Tornado Alley every year and can strike almost anywhere in the United States, as well as in Canada and overseas.

Studies have shown the deadliest twisters in the U.S. happen to the east of Tornado Alley, in an area known as "Dixie Alley." The southern state of Florida also experiences a large number of tornadoes due to its frequent thunderstorms, but they are typically weak.

Tornadoes can strike at any time, but they form most often in May and June in the late afternoon to early evening.

On May 3, 1999, Moore, Oklahoma, the town devastated by Monday's tornado, was hit by another deadly twister. It was one of more than 70 tornadoes to touch down across Oklahoma and Kansas in just 21 hours.

You May Like

Pundits Split Over Long-Term US Role in Afghanistan

Security pact remains condition for American presence beyond 2014; deadline criticized More

US Eyes Islamic State Threat

Officials warn that IS could pose a threat to US homeland More

Video Ukraine: Captured Troops Proof of Russian Role in Separatist Fight

Moscow says Russian troops crossed into Ukrainian territory by mistake More

This forum has been closed.
Comments
     
There are no comments in this forum. Be first and add one

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Scientists Unlock Mystery of Bird Flocksi
X
George Putic
August 25, 2014 4:00 PM
How can flocks of birds, schools of fish or herds of antelope suddenly change direction -- all the individuals adjusting their movement in concert, at seemingly the same time? British researchers now have some insights into this behavior, which has puzzled scientists for a long time. VOA's George Putic has more.
Video

Video Scientists Unlock Mystery of Bird Flocks

How can flocks of birds, schools of fish or herds of antelope suddenly change direction -- all the individuals adjusting their movement in concert, at seemingly the same time? British researchers now have some insights into this behavior, which has puzzled scientists for a long time. VOA's George Putic has more.
Video

Video Ukraine: Captured Troops Proof of Russian Role in Separatist Fight

Ukrainian officials say they have captured Russian soldiers on Ukrainian territory -- the latest accusation of Moscow's involvement in the conflict in eastern Ukraine. VOA's Gabe Joselow reports from the Ukrainian side of the battle, where soldiers are convinced of Russia's role.
Video

Video Rubber May Soon Come From Dandelions

Synthetic rubber has been around for more than a century, but quality tires for cars, trucks and aircraft still need up to 40 percent or more natural rubber content. As the source of natural rubber, the rubber tree, is prone to disease and can be affected by bad weather. So scientists are looking for replacements. And as VOA’s George Putic reports, they may have found one in a ubiquitous weed.
Video

Video Jewish Life in Argentina Reflected in Yiddish Tango

Jewish people from across Europe and Russia have been immigrating to Argentina for hundreds of years. They brought with them dance music that was eventually mixed with Argentine tango. The result is Yiddish tango -- a fusion of melodies and cultural experiences that is still evolving today. Elizabeth Lee reports on how one band is bringing Yiddish tango to Los Angeles.
Video

Video Peace Returns to Ferguson as Community Tries to Heal

Thousands of people nationwide are expected to attend funeral services Monday in the U.S. Midwestern city of St. Louis, Missouri, for Michael Brown, the unarmed African-American teenager who was fatally shot by a white police officer August 9 in the St. Louis suburb of Ferguson. The shooting touched off days of violent demonstrations there, resulting in more than 100 arrests. VOA's Chris Simkins reports from Ferguson where the community is trying to move on after weeks of racial tension.
Video

Video Meeting in Minsk May Hinge on Putin Story

The presidents of Russia and Ukraine are expected to meet face-to-face Tuesday in Minsk, along with European leaders, for talks on the situation in Ukraine. Political analysts say the much welcomed dialogue could help bring an end to months of deadly clashes between pro-Russia separatists and Ukrainian forces in the country's southeast. But much depends on the actions of one man, Russian President Vladimir Putin. VOA's Daniel Schearf reports from Moscow.
Video

Video Artists Shun Russia's Profanity Law

Russia in July enacted a law threatening fines for publicly displayed profanity in media, films, literature, music and theater. The restriction, the toughest since the Soviet era, aims to protect the Russian language and culture and has been welcomed by those who say cursing is getting out of control. But many artists reject the move as a patronizing and ineffective act of censorship in line with a string of conservative morality laws. VOA's Daniel Schearf reports from Moscow.
Video

Video British Fighters on Frontline of ISIS Information War

Security services are racing to identify the Islamic State militant who beheaded U.S. journalist James Foley in Syria. The murderer spoke English on camera with a British accent. It’s estimated that several hundred British citizens are fighting for the Islamic State, also called ISIL or ISIS, alongside thousands of other foreign jihadists. Henry Ridgwell reports for VOA from the center of the investigation in London.

AppleAndroid