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Extreem weer in de V.S.




De Verenigde Staten kennen extreme weersituaties. Tornado's en orkanen eisen elk jaar tientallen levens. Plotseling opkomende onweersbuien zijn vooral in Florida gevaarlijk. In bergachtige gebieden en in woestijnen neemt de grond weinig water op en veranderen beekjes als gevolg van hevige regenval plotseling in kolkende watermassa's.





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Tornado's

Tornado's ontstaan overal in de Verenigde Staten, maar het merendeel ten oosten van de Rocky Mountains in Texas, Kansas en Oklahoma, ook wel Tornado Alley genoemd. Jaarlijks razen ongeveer 1000 tornado's over de Verenigde Staten.

Er zijn twee tornadoseizoenen. De eerste is in april en mei en het tweede in november. In november beperken de tornado's zich tot Alabama, Mississippi en Louisiana.

Florida is berucht wegens het grote aantal onweersdagen. In Lightning Alley onweert het op meer dan 90 dagen per jaar.




quote:
Tornado Parkersburg tweede EF5 van de eeuw

De tornado die zondagmiddag om 18 uur door Parkersburg in de stad Iowa trok is gedefinieerd als een EF-5 tornado. Daarmee is sprake van de tweede EF5-tornado van deze eeuw. De laatste keer dat dit gebeurde was op 4 mei 2007 in Greensburg (Kansas).



De tornado in Parkersburg was de zwaarste tornado voor Iowa sinds 1976. De tornado trok met windsnelheden van 328 kilometer per uur door het dorp en had een breedte van 800 meter. Daarbij vielen volgens de officiële statistiek van de Nationale Weerdienst 6 doden. 50 mensen raakten gewond.

Bron
Nieuwsberichten, foto's, filmpjes over tornado's, onweer, overstromingen etc etc kun je hier in dit topic kwijt.

vorige delen
Deel1: Weeralarm VS: Ongewoon zwaar tornadoseizoen
Deel2: Weeralarm V.S. #2 Extreem weer - Tornado touchdown!
Deel3: Weeralarm V.S. #3 Extreem weer - Tornado touchdown

enkele site's voor informatie

http://www.news9.com/
http://www.tornadovideos.net/
http://www.accuweather.com/news.asp
Amerikaanse weerinstituut National Weather Service

Voor orkanen is er: Hurricane Season 2010 - Things are about to change...

Hagelstenen van een onweersbui bij Oklahoma City


Foto Greensburg voor en na de Tornado Ramp


[ Bericht 7% gewijzigd door #ANONIEM op 15-04-2011 14:32:56 ]
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Strong Storm, Tornado Threat Shifts to the Southeast



Following deadly tornadoes and strong thunderstorms across the nation's midsection late Thursday, the threat for powerful storms will shift to the Southeast today.
A line of damaging thunderstorms will plow through the lower Mississippi Valley first today, impacting cities such as Alexandria, La., Vicksburg, Miss., and Jackson, Tenn., this morning.
By this afternoon and evening, more storms are expected to blossom farther east, making for a potentially active severe weather day across the Mississippi Delta region, the Florida Panhandle, much of Alabama and Mississippi and areas north to the Ohio Valley.
The primary threat from most of the storms will be powerful wind gusts, perhaps greater than 70 mph, as well as large hail that could shatter car windshields and damage homes.
The threat for tornadoes is also particularly high today. Whether at work, home or on the road, stay alert for any possible tornado warnings and seek a safe shelter right away if warned.
Safe shelters for those indoors include basements, interior closets and hallways. Mobile homes and vehicles should be abandoned for a secure building right away.
Cities that are under the threat for severe storms today include Evansville, Ind., Louisville and Bowling Green, Ky., Nashville, Tenn., Huntsville, Birmingham and Montgomery, Ala., Jackson, Miss., Baton Rouge and New Orleans, La., and Pensacola, Fla.



Numerous interstates will be impacted, including I-10, I-24, I-40, I-55, I-59, I-65 and I-85.
Given the powerful nature of the parent storm system, the threat for severe thunderstorms and isolated tornadoes will persist well after dark as storms march east into western Florida, Georgia and the southern Appalachians.
Asheville, N.C., Atlanta, Ga., and Tallahassee, Fla., are among the locations that could see a dangerous thunderstorm by nightfall.
On Saturday, severe storms could approach the Atlantic coastline, threatening communities from the Delmarva Peninsula south to the coast of eastern Florida.
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quote:
1s.gif Op vrijdag 15 april 2011 10:27 schreef Drassss het volgende:

[..]

Toch nog 1 dode..

quote:
OKLAHOMA CITY -- Severe storms that extended east of I-35 from Ardmore to Ponca City caused large hail, multiple tornadoes and one fatality Thursday.

One person was killed and four people were critically injured in Tushka in Atoka County. The sheriff reported the school was heavily damaged and part of the roof was blown off at Walmart. Many homes and businesses in the town five miles south of Atoka were damaged when a large tornado moved through the area.

Track storms using News 9's Interactive ESP Radar
Severe Weather

At 4:15 p.m. storm spotters confirmed a very dangerous tornado moving near Shidler, northeast at 30 mph. Shidler is located about 30 miles east of Ponca City.

Another tornado was spotted in southeastern Oklahoma near Davis.

A third tornado was spotted northeast of Stroud at about 4:42 p.m. People in the area said the funnel appeared for only a minute or so, but blew out some windows in the area.

A tornado touched down near Welty at about 6:15 p.m. Welty is 15 miles south of Bristow.

A tornado was reported just north of Madill at 6:10 p.m. overturning three tractor trailers and damaging power lines. The Oklahoma Highway Patrol said it may have hit a trailer park, but no injuries were reported. Marshall County Emergency Management Director Hubert Weaver said three structures had roof damage from the storm that hit east of town near Highway 99.

Storm trackers also spotted a tornado near Milburn at about 7 p.m.

Osage County deputy emergency management director Adrian Horn said a twister touched down near Hominy Thursday, damaging at least one home and a business, and knocking down telephone poles, power lines and trees. There were no reports of injuries.

Horn also said officials were trying to confirm whether a tornado touched down near Burbank.

Pontotoc County Emergency Management reported downed power lines and tree limbs in the Allen and Stonewall areas. Additional damage was reported south of Stonewall toward Fittstown where one trailer had its roof blown off and three homes lost roofs. A tree also fell on a car. Softball size hail was reported west of Hickory.

Because of the severity of the storms, it is important to make sure you and your family have a severe weather plan, and know where you're going to take shelter if necessary.

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Momenteel tornado waarschuwingen

  Moderator vrijdag 15 april 2011 @ 18:53:24 #5
8781 crew  Frutsel
pi_95552081
quote:
At least seven dead in powerful storms
Atlanta (CNN) -- At least seven people in Oklahoma and Arkansas have died as the result of a powerful line of storms now pushing into the Southeast, authorities said Friday.

The system posed the greatest threat Friday to parts of Alabama and Mississippi, where forecasters warned of possible tornadoes, large hail and damaging winds. Forecasters said severe weather was possible Friday afternoon across northern Mississippi and Alabama and into central Tennessee.

The National Weather Service issued tornado warnings for at least eight counties in Mississipi for Friday morning, indicating tornadoes were occurring or imminent.

"We're in the bull's-eye now," said Gregg Flynn of the Mississippi Emergency Management Agency, who said the front came in earlier than expected. There were no reports of major damage Friday morning.

The storm tore through parts of the Midwest on Thursday, leaving a trail of downed trees and power lines, scattered cars and crushed homes as it moved east. It killed two people in the southeastern Oklahoma city of Tushka, where authorities say a tornado touched down Thursday night. It also left five dead when trees fell on homes in four separate Arkansas incidents, authorities said.

Nearly 36,000 people were without power Friday morning in Arkansas, half of them in Pulaski County, the state Department of Emergency Management reported.

The five deaths reported in Arkansas came from trees falling on homes, agency spokesman Tommy Jackson said.

The victims included a 24-year-old man and an 18-month-old girl who died when a tree fell on their trailer while they were sleeping in Garland County, the sheriff's office there said.

"It was terrifying, seeing that this could happen to anybody," Zach Kelly told CNN affiliate KTHV. "There are so many trees around this neighborhood and it was just a scary thought walking over here that this could happen to any family here, including mine."

In Bald Knob, Arkansas, a 6-year-old boy died when a tree fell on his house, KTHV reported. A man died in Scott, Arkansas when a tree fell into his recreational vehicle, crushing him, according to police. The Arkansas Department of Emergency Management also reported a death from a falling tree in St. Francis County.

In Oklahoma, in addition to the two deaths, the storm caused 15 injuries and extensive property damage in the southeastern town of Tushka, about 125 miles south of Tulsa. The state Department of Emergency Management said a "relatively large" tornado sliced through the area around Tushka.

"There's a tremendous amount of property damage," said Capt. Jeff Sewell with the Oklahoma Highway Patrol. "Cars have been blown together. A lot of electric wires are down all over the place. Several houses were totally destroyed."

In Oklahoma, the weather service received reports from media and trained storm spotters who witnessed the tornado in Tushka. Sewell said the tornado stayed on the ground for seven miles.

The tornado was reported about three miles north of Caney, Oklahoma, near the towns of Tushka and Atoka, said Lamont Bain with the National Weather Service in Norman, Oklahoma.

Damage was also reported in the city of Hominy; in the Allen and Stonewall areas of Pontotoc County; and in the Madill area, the state Department of Emergency Management said.

South of Stonewall, a trailer had its roof blown off and three other homes also lost their roofs, the department said. A tree fell on a car, and softball-sized hail was reported near Hickory.

Severe weather could be in store for much of the Midwest and Southeast this weekend.

Eastern Missouri, central and southern Illinois, southwest Indiana and parts of Kentucky, Tennessee, Georgia and the Florida panhandle could also see severe weather through early Saturday as moist air spreading out from the Gulf collides with a cold front pushing east from the Plains, the weather service said.

The forecast from the National Weather Service says the primary threat outside of Mississippi and Alabama will be damaging thunderstorm winds, but there also will be the possibility of isolated tornadoes.
CNN zou inmiddels negen doden melden :{
  Moderator vrijdag 15 april 2011 @ 18:55:00 #6
8781 crew  Frutsel
pi_95552142
Zie ook:
Doden door zware stormen in de VS

quote:
Zeker zeven doden in de VS
Bij zware stormen in de Amerikaanse staten Oklahoma en Arkansas zijn zeker zeven doden gevallen, onder wie twee kinderen. Twee mensen, een man van 24 en een peuter van 18 maanden, werden gedood toen een boom op hun caravan viel.

Een 6-jarige jongen werd ook gedood door een boom die op zijn huis viel. Zijn moeder en haar andere kind kwamen met de schrik vrij.

Een andere man werd in zijn auto gedood, ook door een omvallende boom.
School

In Oklahoma werd door een tornado een school verwoest in het stadje Tushka. Daar vielen ook twee doden.

De zevende dode viel doordat zijn woonwagen door de wind werd opgetild en in een nabijgelegen veld werd neergesmakt.

Na Oklahoma en Arkansas trok de storm verder naar de staten Tennessee, Louisiana en Mississippi.
  Moderator vrijdag 15 april 2011 @ 18:57:40 #7
8781 crew  Frutsel
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Foto van monstertornado bij Clinton/Jackson

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Momenteel veel losse cellen die tornado warnings afgeven in de staten Alabama & Mississippi.
  Moderator vrijdag 15 april 2011 @ 19:02:17 #9
8781 crew  Frutsel
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Clinton (MS) heeft echt de volle laag gehad als ik dat zo allemaal lees :{
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-edit, vergeet de link-
  Moderator vrijdag 15 april 2011 @ 19:03:57 #11
8781 crew  Frutsel
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Reed Timmer (tornado chaser) zit in Jackson laat ie weten via zijn site/twitter.
"Red Alert" voor die plaats nu :{
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http://www.kfor.com/video(...)ather/Stroud-Tornado

Tornado van gisteren in Noord-oost Oklahoma, Stroud.
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WTF, heftig! Ik dacht dat het wel mee zou vallen met die lijn.
's Avonds een man, overdags rustig an
  Moderator vrijdag 15 april 2011 @ 19:21:01 #14
8781 crew  Frutsel
pi_95553158
Ook tornado bij Barlow Alabama nu. Mogelijk ook doden in Mississippi
pi_95553193
http://weather.wdtinc.com(...)0220&C=20211&O=10245

Chaser die oost van een supercell aan het rijden is, die een tornadowarning heeft. Best goed te zien op de radar ( west van Jackson ).
  Moderator vrijdag 15 april 2011 @ 20:25:28 #16
8781 crew  Frutsel
pi_95556344
quote:
Large tornado reported on ground near Dekalb, Miss. Same cell that produced damage near Jackson, Miss.
  Moderator vrijdag 15 april 2011 @ 20:25:52 #17
8781 crew  Frutsel
pi_95556898
  vrijdag 15 april 2011 @ 21:15:21 #19
145755 kahaarin
You are my sunshine......
pi_95559472
Reed Timmer is nu weer aan het chasen. ;)
http://www.news9.com/cate(...)cker?redirected=true
be nice or go away
pi_95560262
De één naar de andere cel nu met een haak en dus een tornadowarning...
  vrijdag 15 april 2011 @ 21:31:18 #21
145755 kahaarin
You are my sunshine......
pi_95560372
quote:
1s.gif Op vrijdag 15 april 2011 21:29 schreef Drassss het volgende:
De één naar de andere cel nu met een haak en dus een tornadowarning...
Ik zie het, en er waren er al behoorlijk wat geweest. Eng hoor, ik hoop echt dat er geen meer over een dorp/stad heen gaat.
be nice or go away
pi_95560469
quote:
2s.gif Op vrijdag 15 april 2011 21:31 schreef kahaarin het volgende:

[..]

Ik zie het, en er waren er al behoorlijk wat geweest. Eng hoor, ik hoop echt dat er geen meer over een dorp/stad heen gaat.
Het is nog lang niet voorbij vandaag.. dus ben er maar bang voor.
  Moderator vrijdag 15 april 2011 @ 21:34:22 #23
8781 crew  Frutsel
  vrijdag 15 april 2011 @ 21:34:58 #24
145755 kahaarin
You are my sunshine......
pi_95560578
quote:
1s.gif Op vrijdag 15 april 2011 21:32 schreef Drassss het volgende:

[..]

Het is nog lang niet voorbij vandaag.. dus ben er maar bang voor.
Ben ik ook wel, tornadoes zijn verschrikkelijk mooie fenomenen zolang ze in het open veld huishouden. ;)
be nice or go away
pi_95560728
quote:
Oef.. gaat goed te keer.
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