tja, wat heet "licht"quote:Op zaterdag 15 maart 2008 19:54 schreef marcb1974 het volgende:
Gaat idd goed mis zo daar ja
En dan is een F2 nog een lichte ook.
Een F2 op het platte land gooit caravans om en rukt grotere takken van bomen af. Rondvliegend puin zal daar wel schade doen aan gebouw (meestal van hout) en ruiten.quote:Op zaterdag 15 maart 2008 19:54 schreef marcb1974 het volgende:
Gaat idd goed mis zo daar ja
En dan is een F2 nog een lichte ook.
Dan zou je dus een F3 krijgenquote:Op zaterdag 15 maart 2008 21:01 schreef DemonRage het volgende:
In een voorstad of stad waar grotere gebouwen staan kan tunneleffect optreden als daar flink wat wind doorheen raast en dan kan de wind van een F2 tornado flink versnellen.
Inderdaad. De wind versnelt dan dus vanwege het tunneleffect en de schade zal groter zijn, net als een F3-tornado bijvoorbeeld.quote:
quote:PIEDMONT, Mo. — Flooding forced hundreds of people to flee their homes and closed scores of roads Wednesday across a wide swath of the nation's midsection as a huge storm system poured as much as 10 inches of rain on the region.
Four deaths were linked to the flooding in Missouri, a search was under way in Texas for a teenager washed down a drainage pipe, and two people were missing in Arkansas after their vehicles were swept away by rushing water.
The National Weather Service posted flood and flash flood warnings from Texas to Pennsylvania on Wednesday.
quote:Heavy rain began falling Monday and just kept coming. About 10 inches had fallen by Wednesday morning in southeast Missouri's Cape Girardeau County, where street flooding marooned some residents in their homes, the State Emergency Management Agency said. The weather service said 6.7 inches of rain fell in 24 hours at Jasper, Ark., and nearly 6 inches had fallen at Evansville, Ind.
Scott and Marilyne Peterson and their son, Scott Jr., scurried out of their home near Piedmont after seeing water rise 3 feet in five minutes. They had just enough time to grab essentials and their dog.
"You didn't have time to worry," Scott Peterson Sr. said. "You just grab what you can and go and you're glad the people are OK."
The rain in Missouri was expected to finally come to an end Wednesday as the weather system headed toward the northeast.
An estimated 300 houses and businesses were flooded in Piedmont, a town of 2,000 residents on McKenzie Creek. Dozens of people were rescued by boat.
Outside St. Louis, the Meramec River was expected to crest 10 to 15 feet above flood stage at some spots, threatening towns like Eureka and Valley Park.
Flooding was widespread in Arkansas, washing out some highways and leading to evacuations of residents in parts of Baxter, Madison, Sharp counties, said Tommy Jackson, a spokesman for the Arkansas Department of Emergency Management. The Highway and Transportation Department reported state roads blocked in 16 counties.
In northeast Arkansas, the Spring River was rising at a rate of 6 inches per hour and carrying debris that included full-size trees.
(Bron: FOX)quote:DALLAS — Airlines faced passenger backlogs Wednesday from hundreds of flights canceled by severe Texas storms that flooded streets and left rescuers searching for a teenager who was apparently swept down a creek drainage pipe.
The 14-year-old boy remained missing after a friend, who swam to safety, told authorities he saw him carried by fast-moving waters Tuesday in the creek where they had been playing, according to the Mesquite Fire Department.
More than six inches of rain deluged areas around Dallas on Tuesday, according to the National Weather Service. That included record rainfall at Dallas-Fort Worth International Airport, where more than half of 950 scheduled flights were canceled.
By early Wednesday morning, DFW airport had opened all security checkpoint lanes in preparation for an early rush of stranded passengers. Airport officials said the backlog flights would take most of Wednesday to unwind.
"Everybody did a great job overnight of hanging in there and trying to get some rest," airport spokesman Ken Capps said. "The airlines will be working the lines early to try to get as many people rebooked and out of here as quickly as possible."
Cots and blankets were given to stranded travelers overnight. The airport early Wednesday also received several hundred new passengers who were bussed from airports as far as Louisiana.
At least 11 more cancellations were expected Wednesday morning, and airport officials braced passengers for more delays and canceled flights as airlines rebuild their schedules.
Forecasters expected sunny skies around Dallas on Wednesday, a stark change from the barrage of rain and strong winds that wreaked havoc on the area Tuesday.
Street flooding led to multiple high water rescues, and a city bus was abandoned by the driver and passengers when it became stranded. No one on the bus was hurt.
In suburban Lancaster, hundreds of people were advised to evacuate their homes as nearby Ten Mile Creek rose. One woman was rescued from her yard and four other people were rescued from their vehicles, said Ciciely Hickmon, a spokeswoman for the city.
It was unclear how many travelers were affected by the cancellations at DFW airport, where officials estimate about 160,000 passengers pass through their terminals each day.
Winds of more than 100 mph were briefly reported at the airport, which received a single-day record of 2.35 inches of rain, according to the National Weather Service. The previous high of 1.52 inches was set in 1984, the weather service said.
The Federal Aviation Administration had evacuated DFW's west air traffic control tower for about 15 minutes Tuesday morning after seeing a funnel cloud over a highway.
By Tuesday evening, the airport was accepting about 50 arrivals and departures per hour — less than half the usual 120 flights that use DFW's seven runways every hour, the airport said in a news release.
quote:With a weak storm moving off the mid-Atlantic coastline, the focus shifts from the snowy weather to the flooding continuing over much of the Midwest and into the Mississippi Valley for Easter.
Flood waters are still rising days after the rain has ended over parts of the Ohio River and the northern Mississippi. Downstream, however, the larger rivers will still not be cresting until well into next week.
The Severe Weather Center lists the flood warnings that continue today.
The flooding sparked by two days of heavy rain in the Midwest earlier this week will go down as the worst flooding in the 80 years since flood records were kept. The clipper system also gave portions of Ohio, Michigan and Wisconsin up to a foot of snow, adding to the flooding concern as temperatures climb above freezing the next several days.
quote:Tornado's houden weer huis in VS
Uitgegeven: 2 mei 2008 19:33
Laatst gewijzigd: 2 mei 2008 23:04
WASHINGTON - Tornado's hebben vrijdag in de Amerikaanse staat Arkansas dood en verderf gezaaid. Reddingsdiensten vonden tot dusver zeven lijken. Een van de slachtoffers is een meisje van vijftien jaar. Zij lag te slapen toen een ontwortelde boom op haar huis viel.
De meteorologische dienst meldde ook tornado's in Texas, Oklahoma en Kansas. Bij vele tienduizenden mensen viel de stroom uit. Tientallen huizen werden totaal verwoest en daarvan ligt alleen de fundering nog op de juiste plek.
Eerder deze week richtten tornado's al grote schade aan in Virginia. Honderden mensen raakten toen gewond door de 'twisters'.
quote:Een reeks tornado's hebben gisteren in het middenwesten van de Verenigde Staten ten minste zestien mensen het leven gekost. De wervelstormen en ander noodweer richtten in de staten Oklahoma en Missouri plaatselijk grote schade aan, aldus lokale autoriteiten.
Een zwerm tornado's doodde in Missouri tien mensen. De politie sloot er ondermeer een snelweg doordat brokstukken op het wegdek waren gewaaid. In Oklahoma kwamen in het stadje Picher zes mensen om het leven. Ten minste 150 woningen raakten zwaarbeschadigd.
De stormen gingen gepaard met hagelstenen ter grootte van golfballen. Harde windstoten beschadigden stroomdraden, ontwortelden bomen en bliezen vrachtwagens omver, aldus de nationale weerdienst. De storm trekt verder naar het oosten, waar zich in staten als Mississippi en Tennessee nog meer tornado's kunnen voordoen.
Jaarlijks komen in de Verenigde Staten honderden tornado's voor, met name in het middenwesten. De 'twisters', die vaak gepaard gaan met onweersbuien, duiken vooral op in het voorjaar. In februari vielen door tornado's meer dan vijftig doden op Super Tuesday, de dag waarop in een reeks Amerikaanse staten voorverkiezingen werden gehouden voor het presidentschap.
http://www.ad.nl/buitenla(...)_tornados_in_VS.htmlquote:Doden door tornado's in VS
MINNEAPOLIS - Zeker acht mensen zijn zondag om het leven gekomen door tornado's en andere stormen in het middenwesten van de Verenigde Staten. Dat hebben de autoriteiten maandag laten weten.
Het zwaarst getroffen zijn de stadjes Parkersburg en New Hartford in de staat Iowa. Het natuurgeweld eiste daar zeven levens. Tientallen huizen en andere gebouwen werden verwoest. In Hugo in de staat Minnesota werd een 2-jarig kind door een tornado gedood.
Jaarlijks komen in de Verenigde Staten honderden tornado's voor, vooral in het middenwesten. Ze gaan vaak gepaard met onweersbuien.
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