Topic: Storm Prediction Center
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Search and rescue efforts under way in Moore, Okla. (+video)
A monstrous tornado barreled Moore, Okla., Monday, demolishing an elementary school and a hundreds of homes. At least 24 people were killed. President Obama declared a major disaster and ordered federal aid to supplement state and local recovery efforts.
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Oklahoma tornadoes: More forecast for Monday (+video)
Oklahoma tornadoes leave one dead on Sunday. But tornado warnings saved lives in Oklahoma, say officials. The National Weather Service says more tornadoes are forecast for Monday afternoon.
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Chicago flooding closes airports and highways, opens sinkhole
Chicago flooding opened a sinkhole, shut down expressways, delayed commuter trains, flooded basements, and caused officials to close schools, cancel flights, and evacuate a hospital.
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Why was March so cold? Blame Greenland.
You're not imagining it: March 2013 was chilly — the second-coldest March since 2000. The culprit is a stubborn mass of warm air over Greenland that blocked the jet stream.
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Massive storm system in South tosses cars, leaves one fatality in Georgia
A storm system spawned tornadoes, closed I-75 in northern Georgia, and killed two people, one in Georgia and one in Tennessee.
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How the 'derecho' storm came to be such a surprise to the mid-Atlantic
As the system moved south, forecasters started to realize this was not just an ordinary summer thunderstorm. The last time a derecho hit the US was in 2009, in the Plains states.
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Tornado warnings saved lives, but sirens aren't enough (+video)
Tornado sirens aren't designed to awaken residents and aren't fail-proof, as Woodward, Okla. learned. What tornado warnings were effective this past weekend.
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Midwest tornadoes pose severe threat across hundreds of miles
Tornadoes raking communities across the Midwest and Plains left five people dead and at least 29 injured in Oklahoma as a vast severe weather front plunged eastward Sunday across the nation's midsection.
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As Midwest storm bears down, forecasters use more urgent voice in tornado warnings
The National Weather Service is testing phrases like 'catastrophic' and 'unsurvivable' to describe looming storm systems in a bid to engage Americans’ survival instincts. Saturday's tornado-bearing storm was called 'high-end' and 'life-threatening.'
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Texas tornadoes: How much warning time was possible? (+video)
Texas tornadoes that hit the Dallas area Tuesday resulted in no fatalities, in part due to timely warnings. But a new model could improve tornado warning times dramatically.
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Spring into summer: Unseasonable heat helps pave way for violent weather
Spring is just beginning, but in many parts of the country it already feels like summer. As a storm moves into especially warm humid air in the center of the country, Texas is under the gun for violent storms.
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Somber searches resume as tornado outbreak leaves heartland reeling
An 'enormous outbreak' of at least 91 tornadoes tore into the Ohio and Tennessee Valleys Friday, the second major tornado system to rake across the heartland in the span of three days.
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Tornadoes sweep across Alabama, Tennessee, Ohio and Indiana
A dozen tornadoes have been spotted across the South and Midwest. Tornado warnings are up until 10 p.m. Friday night
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Storm-ravaged communities brace for more violent weather
Damaged communities tried to take advantage of the brief break in the weather, mindful of one meteorologist's warning that by Friday, both regions would again be 'right in the bull's eye.'
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Rare, night tornadoes hit Harrisburg, Branson, and other Midwest towns
Harrisburg, Ill, was hit by a rare, massive night-time tornado with 170 mph winds. At least 12 people were killed by 16 tornadoes in three states. Friday could see a similar storm system, say meteorologists.
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Nine dead as tornadoes rip from Branson, Missouri, up to Illinois
A storm system produced at least 16 twisters from Kansas to Branson, Missouri, to Illinois overnight Tuesday and into Wednesday, part of an active 2012 tornado season. Kentucky remains under a tornado watch.
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What if we could predict tornadoes a month out? Scientists make strides.
Scientists have only a fledging ability now, but a new approach to prediction could eventually allow forecasters to identify portions of states facing high risk for tornadoes in an upcoming month.
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Tornadoes hit Birmingham and broader South. Is that normal for January?
The severe weather damaged homes in communities in central Arkansas, as well as in communities around Tuscaloosa and Birmingham, Ala. Both Alabama cities were also hit by tornadoes last April.
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Massachusetts tornado: What are deadly tornadoes doing way up in New England?
At least two tornadoes tore through communities in western and central Massachusetts Wednesday, killing four and injuring 200. They make 2011 the deadliest year for US tornadoes since 1950.
06/02/2011 01:29 pm -
East coast tornado, storms kill four in Mass., towns digging out
East coast tornado: Residents of 18 communities in central and western Massachusetts woke to widespread damage Thursday, a day after at least two late-afternoon tornadoes shocked emergency officials with their suddenness and violence.
06/02/2011 12:17 pm -
Why has 2011's tornado season been so terrible?
Nearly 1,200 tornadoes have swarmed the United States this year and the death toll from these tornadoes has likely topped 500, a number not seen since 1953.
05/25/2011 07:05 pm -
Oklahoma, Alabama, Joplin: Why we're seeing so many tornadoes and superstorms
The superfunnels that hit Tuscaloosa, Ala., in late April and Joplin, Mo., on Sunday, are generated by storm systems whose journeys across the country are slowed by a roadblocked jet stream.
05/24/2011 08:21 pm -
Missouri tornado killed at least 89 according to officials
Missouri tornado: Authorities warned that the death toll could climb as search and rescuers continued their work.
05/23/2011 11:59 am -
What Obama will find in tornado-torn Alabama
President Obama travels to Alabama Friday to see first-hand the impact of tornadoes whose casualty toll across six states rises to 319.
04/29/2011 11:55 am -
Tornado outbreak is possibly the deadliest in 37 years
The nation's Storm Prediction Center in Norman, Okla., reports that tornadoes this year have already claimed more lives than all of last year, possibly making this the deadliest tornado outbreak since the 1974.
04/28/2011 04:20 pm
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