Imagens de hoje mostram intensa instabilidade na região central dos EUA, intensificada pelo fenômeno El Niño, com umidade que vem do Pacífico, causam tornados.
syracuse.com
Moore, Oklahoma, city devastated in 2013 by tornado, hit again (video)
News9 in Oklahoma City shows the tornado roaring through
Moore, Oklahoma, a city where 24 people died during a tornado in 2013.
(Screenshot from YouTube video)
Emergency managers reported no injuries when a late-afternoon storm hit Sand Springs, Oklahoma, and raced eastward into Tulsa. Until Tuesday, when a waterspout formed over an Arkansas lake, the U.S. hadn't had a tornado in more than a month.
Sirens also went off at Moore, Oklahoma, where 24 people died in a top-of-the-scale EF5 tornado in 2013. Television coverage Wednesday evening showed a small twister on the ground. Another tornado was reported near the fairgrounds in western Oklahoma City.
The tornado season usually ramps up for parts of the U.S. in March, but weather patterns funneled cold air into much of the country, depriving the atmosphere of the warm, moist air necessary for form bad storms for most of the month.
That all changed this week. Southerly winds pushed temperatures into the 70s and 80s across the Ozarks and Southern Plains, while weather fronts churned the air into Wednesday's storms.
Meteorologist Jeff Hood in Little Rock said a weak "waterspout" tornado briefly touched down in Bull Shoals Lake in Marion County in northwest Arkansas on Tuesday night. He said it will likely be classified an EF0 -- the weakest tornado with wind speeds of 65 to 85 mph. A "waterspout" forms over water. The tornado Tuesday never made it onto land, and there were no reports of damage.
"This will be the 'tornado' that breaks the drought for March," Greg Carbin, warning coordination meteorologist for the Storm Prediction Center, said Wednesday.
Before this week, only about two-dozen twisters had been recorded this year during a period when about 120 are typical. The last time the U.S. had no twisters in March was nearly 50 years ago, according to figures from the Storm Prediction Center in Norman, Oklahoma.
news.yahoo.com
1 person killed when tornadoes hit Oklahoma, Arkansas
By JUSTIN JUOZAPAVICIUS
6 hours ago 26.03.2015
TULSA, Okla. (AP) — The slow
start to the nation's tornado season came to a violent end Wednesday,
when tornadoes raked Tulsa during its evening rush hour, killing one
person and injuring others.
Tulsa County
Sheriff's Capt. Billy McKelvey said one person was killed in a mobile
home park near suburban Sand Springs that was nearly destroyed Wednesday
amid severe weather. It wasn't yet clear whether it was a tornado or
straight-line winds that hit the park, which McKelvey said could
accommodate 40 to 50 trailers. McKelvey said he believed at least 15
people were hurt, but he did not have an exact number yet.
"It could have been much worse," he said.Tornadoes were seen elsewhere in Oklahoma, as well as in Arkansas, but no injuries were reported from those.
A
small tornado swept across parts of Moore, an Oklahoma City suburb
where 24 people died in a top-of-the-scale EF5 tornado in 2013. Other
twisters formed along a line from southwest of Oklahoma City to east of
Tulsa, and some touched down in the Ozark Mountains of northwestern
Arkansas.
Until Tuesday, when a waterspout formed over an Arkansas lake, the U.S. hadn't had a tornado in more than a month.
Television video Wednesday
evening showed roof damage in a Moore neighborhood — the Moore storm
two years ago scraped lots to their foundations. A glass door at the
Tulsa building that houses the National Weather Service office was
smashed, and several cars in the parking lot lost their windows.
Don Ruffin said he and a neighbor were at a convenience store in far southeast Moore when he saw the tornado approaching."I don't know how close it was to us, but it looked like it was coming toward us, and so we didn't take any chances," Ruffin said. "We got in our vehicles, ran home and got in our shelters."
Ruffin said after the storm passed, there were some fences knocked down and "patio furniture thrown everywhere."
The
Oklahoma Department of Emergency Management said statewide, nearly
80,000 power outages were reported. The Oklahoma Highway Patrol said an
overturned tractor-trailer had snarled traffic on Interstate 35, a major
north-south route.
"Those troopers are working their guts out there right now," Lt. John Vincent said.
The
tornado season usually ramps up for parts of the U.S. in March, but
weather patterns funneled cold air into much of the country, depriving
the atmosphere of the warm, moist air necessary to form bad storms for
most of the month.
That all
changed this week. Southerly winds pushed temperatures into the 70s and
80s across the Ozarks and Southern Plains, while weather fronts churned
the air into Wednesday's storms.
Meteorologist
Jeff Hood in Little Rock said a weak waterspout tornado briefly touched
down in Bull Shoals Lake in Marion County in northwest Arkansas on
Tuesday night. He said it will likely be classified an EF0 — the weakest
tornado with wind speeds of 65 to 85 mph. A waterspout forms over
water. The tornado never made it onto land, and there were no reports of
damage.
"This will be the 'tornado' that breaks the drought for
March," Greg Carbin, warning coordination meteorologist for the Storm
Prediction Center, said before Wednesday's storms hit.
Before
this week, only about two-dozen twisters had been recorded this year
during a period when about 120 are typical. The last time the U.S. had
no twisters in March was nearly 50 years ago, according to figures from
the Storm Prediction Center in Norman, Oklahoma.
__
Associated
Press reporters Ken Miller, Sean Murphy and Tim Talley contributed to
this report from Oklahoma City. Jackie Quinn with AP Radio in Washington
also contributed.
Deadly Tornado Pummels Mobile Home Park in Oklahoma
By:
Bob Henson
, 04:03 PM GMT em 26 de Março de 2015
Two Oklahoma suburbs took the brunt of damage from a rapid-fire severe
weather outbreak that developed Wednesday afternoon. At least one
person was killed and another critically injured when a tornado and/or
accompanying downdraft winds moved across a manufactured home park in Sand Springs,
just west of Tulsa. A number of mobile homes were reportedly destroyed
in the high winds. Just south of Oklahoma City, the long-suffering town
of Moore--struck by catastrophic F5/EF5 tornadoes in 1999 and 2013 and a
deadly tornado that produced F3 damage in Moore in 2003--experienced yet another twister,
though fortunately a much weaker one than its predecessors. Overall,
the severe weather on Wednesday covered a swath from central Oklahoma to
southeast Missouri, producing a preliminary count of 8 tornadoes and more than 110 reports of severe hail, some as large as baseballs.
Figure 1. First responders work to free a man from a pile of rubble after a round of severe weather hit a trailer park near 145th West Avenue and West 17th Street in Sand Springs, Okla., Wednesday, March 25, 2015. (AP Photo/Tulsa World, Matt Barnard)
Wednesday’s damage in Sand Springs is a painful reminder of our lack of national policy on mobile home safety in tornadoes. Winds of no more than 110 mph (a borderline EF1/EF2 on the Enhanced Fujita Damage Scale) can destroy the roof and walls of a typical manufactured home, or cause it to roll over. Although just 5% of Americans live in mobile homes, anywhere from 25% to 50% of tornado-related deaths in a typical year occur in such homes, including 17 of 47 U.S. deaths in 2014, 17 of 55 deaths in 2013, and 48 of 68 deaths in 2012, according to data from NOAA’s Storm Prediction Center. Thousands of mobile home residents live on acreages with no ready source of safe shelter, but even those who live in mobile home parks often lack an underground refuge. Although the state of Minnesota and some localities mandate shelters, safe rooms, and/or an evacuation plan when mobile home parks reach a certain size, there is no such national requirement. Where shelters do exist, they often fall prey to vandalism or are used for other purposes. One Sand Springs resident told the Tulsa World that as Wednesday’s tornado bore down, she discovered that her RV park’s designated shelter was “full of washing machines”.
Figure 2. The paths of the Moore, Oklahoma tornadoes from May 3, 1999 (green); May 8, 2003 (blue); and May 20, 2013 (red), together with the preliminary path of the March 25, 2015 tornado (yellow). This year’s tornado crossed the path of the 1999 tornado near the northwest edge of Moore and intersected the 2013 path near Interstate 35. Image credit: NWS/Norman and NWS.
Few if any cities have experienced the kind of protracted bad luck with tornadoes that Moore has had to deal with (see Figure 2). The city endured major twisters on May 3, 1999 (killing 36 and injuring 583 along its full path); May 8, 2003; and May 20, 2013 (killing 24 and injuring 377 along its full path). Wednesday’s tornado was far less destructive, mostly knocking out windows and destroying carports and trees, although it blew over some vehicles and knocked out the three transmission towers of the radio station KOKC (formerly KOMA, which broadcast from a separate tower in the mid-1950s that was the world’s largest structure at the time).
TWC's Jon Erdman has a nice article on the Moore and Oklahoma City Tornado History.
Bob Henson
Figure 1. First responders work to free a man from a pile of rubble after a round of severe weather hit a trailer park near 145th West Avenue and West 17th Street in Sand Springs, Okla., Wednesday, March 25, 2015. (AP Photo/Tulsa World, Matt Barnard)
Wednesday’s damage in Sand Springs is a painful reminder of our lack of national policy on mobile home safety in tornadoes. Winds of no more than 110 mph (a borderline EF1/EF2 on the Enhanced Fujita Damage Scale) can destroy the roof and walls of a typical manufactured home, or cause it to roll over. Although just 5% of Americans live in mobile homes, anywhere from 25% to 50% of tornado-related deaths in a typical year occur in such homes, including 17 of 47 U.S. deaths in 2014, 17 of 55 deaths in 2013, and 48 of 68 deaths in 2012, according to data from NOAA’s Storm Prediction Center. Thousands of mobile home residents live on acreages with no ready source of safe shelter, but even those who live in mobile home parks often lack an underground refuge. Although the state of Minnesota and some localities mandate shelters, safe rooms, and/or an evacuation plan when mobile home parks reach a certain size, there is no such national requirement. Where shelters do exist, they often fall prey to vandalism or are used for other purposes. One Sand Springs resident told the Tulsa World that as Wednesday’s tornado bore down, she discovered that her RV park’s designated shelter was “full of washing machines”.
Figure 2. The paths of the Moore, Oklahoma tornadoes from May 3, 1999 (green); May 8, 2003 (blue); and May 20, 2013 (red), together with the preliminary path of the March 25, 2015 tornado (yellow). This year’s tornado crossed the path of the 1999 tornado near the northwest edge of Moore and intersected the 2013 path near Interstate 35. Image credit: NWS/Norman and NWS.
Few if any cities have experienced the kind of protracted bad luck with tornadoes that Moore has had to deal with (see Figure 2). The city endured major twisters on May 3, 1999 (killing 36 and injuring 583 along its full path); May 8, 2003; and May 20, 2013 (killing 24 and injuring 377 along its full path). Wednesday’s tornado was far less destructive, mostly knocking out windows and destroying carports and trees, although it blew over some vehicles and knocked out the three transmission towers of the radio station KOKC (formerly KOMA, which broadcast from a separate tower in the mid-1950s that was the world’s largest structure at the time).
TWC's Jon Erdman has a nice article on the Moore and Oklahoma City Tornado History.
Bob Henson
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