However other structures in or near the path showed little discernible damage. From the official National Weather Service damage survey, this tornado appeared to have developed near the intersection of NW th Street and Pennsylvania Avenue. The tornado caused most of its damage in the Valencia neighborhood. It was here that many homes sustained roof, window, garage door, and fence damage. One home sustained especially heavy damage, with a large portion of the roof being lost and extensive damage to the inside of the home.
The tornado continued northeast and appeared to have dissipated just northeast of the subdivision, where some tree damage was noted. After a gap, additional damage was observed near the intersection of NW nd Street and Western Avenue, where several large power transmission poles were blown down, and some fence damage was also observed.
While there was not a continuous damage path between the two damage sites, they do appear to be in line with the storm's path. A storm chaser also observed this tornado as far northeast as at least Covell Road between Santa Fe Avenue and Kelley Avenue where it is believed to have dissipated.
The tornadic winds removed part of a residence's roof near this location. Sporadic damage to trees and fences were reported as the tornado moved east northeast toward the north side of Lake Overholser. The tornado continued moving east-northeast into Oklahoma County. The tornado continued from the north side of Lake Overholser and crossed NW 39th street, damaging several bleachers next to the baseball field. Damage to trees was also noted at this location, with one tree falling on a gas plant.
About 50 residents had to be evacuated due to the gas leak. An apartment complex was sustained some damage near NW 50th and Grove streets. Tree damage continued along the tornadoes path until it finally lifted near NW 60th and Meridian Avenue. The tornado moved from 5 miles north-northwest to 3 miles north-northeast of The Village of from near the intersection of NW th Street and May Avenue to near near the intersection of Memorial and Western Avenune.
The tornado developed near NW th and May Avenue. Scattered tree and sign damage was reported as the tornado moved southeast toward Memorial Road and Western Avenue. Roof damage was also observed at a residence near NW th and Pennsylvania Avenue, and at an apartment complex northeast of Pennsylvania Avenue and Memorial Road. A brief tornado affected the area near Northwest Expressway and Rockwell Avenue.
Two large shopping complexes received significant roof damage, enough to close two of the stores for several days. A smaller retail building received major roof damage and a majority of its windows were blown out. A restaurant had part of its wall collapse and a plywood board from the small retail building was driven into the side of the building.
An apartment complex received damage, mostly minor. One of the buildings in the complex had part of its roof completely removed.
The tornado continued into a neighborhood, damaging mainly trees and doing minor shingle damage before lifting. Reports of three injuries were received from the area. This tornado touched down near the intersection of nd and Western.
The tornado tracked to the northeast, damaging a number of homes, some severely, and trees along its path. Several homes in the Oak Tree development lost significant portions of their roof. Several homes also has large portions destroyed due to large garages and rooms above the garages. This tornado continued into Logan County. In all, over homes were damaged or destroyed. Over 28, people were without power at the its peak. Luckily, only four minor injuries were reported.
Damage estimate: Unknown Data sources: D. The tornado developed over the northwest side of lake and moved south-southeast along the western shore. A boat dock was damaged and trees and other small structures sustained minor damage. No damage was reported. This long-tracked and devastating tornado developed west of I, northwest of Max Westheimer airport.
Several homes also sustained damage, mainly with mostly roofs receiving significant damage, and some siding was ripped off. Several fences were also knocked down as the tornado moved northeast. The tree damage became more severe, breaking at various heights of the tree or being uprooted. Walls of homes collapsed, and debris from the homes scattered in all directions. Several 2x4's punctured roofs and ceilings over numerous structures.
A few mobile homes in this area were also completely destroyed. Where the tornado crossed I, a gas station and drive-in restaurant sustained up to EF3 damage.
The most severe damage, one of the two EF4 tornadoes of the day, occurred in the Deerfield West Subdivision. A well-built residence here was completely destroyed, with most exterior and interior walls collapsing. The tornado finally lifted 2 miles south of Harrah. In addition to the incredible damage, one person lost their life while trying to flee the tornado. Power poles and a house were damaged near and just east of Broadway Street and Eastern Avenue in the southern portion of Moore.
As the tornado moved northeast, most of the roof was removed from a mobile home and trees were damaged west of Sunnylane Road north of NE 12th Street, and shingle damage occurred on a house just east of Sunnylane Road. The tornado moved east-northeast across Sooner Road into a neighborhood, producing tree and roof damage before dissipating. The tornado formed on the south side of Chickasha, quickly doing EF-2 damage.
One fatality occurred as a mobile home was destroyed in the south portion of Chickasha. As the tornado moved northeast of Chickasha, it gained significant strength, with several areas receiving EF-4 damage. Well-built homes were destroyed. Trees were debarked with only stumps remaining.
Cars were thrown hundreds of feet. Wind speeds in this area were estimated near mph. Significant damage continued as the violent tornado moved into McClain County, with well-built homes being destroyed, and some swept completely from their foundations.
A concrete dome home was severely damage, mainly by the flying debris. Trees were debarked or destroyed. Very little was left standing for the first few miles into McClain County. The tornado crossed over the Canadian River into Cleveland County, with mainly minor tree, power pole, and power line damage occurring. A few barns and outbuildings also sustained minor damage east of U.
Interstate Highway As it reached the end of its life cycle, the tornado moved due north and then made a small loop, finally traveling southeastward for about a half mile before dissipating in southwestern Oklahoma City near the intersection of SW th Street and Portland Avenue. All told, the tornado had traveled a along path of 33 miles long and had lasted for 55 minutes.
The maximum path width was 0. Major roof damage was reported to a structure and four mobile homes sustained minor damage. Several trees, power lines, and fences were blown down along its path, including near the City baseball park. The tornado damaged the roof of a trailer. Monetary damages estimated. The tornado moved northeast, crossing the eastern arm of Lake Thunderbird. A number of homes were significantly damaged as the tornado moved east-northeast through neighborhoods from near Indian Hills Road and th Avenue SE to the Pottawatomie County line.
The tornado moved through a mobile home park north of Independence Road after crossing State Highway Just northeast of the mobile home park, a permanent home was destroyed with much of the debris blown well to the northeast. One fatality occurred in the mobile home park, and another man was killed in his vehicle. Although this tornado primarily affected northeast Norman and Shawnee, the tornado did move through the extreme southeastern tip of the city of Oklahoma City just west and north of Hardesty Road and Pottawatomie Road.
At least EF2 damage occurred as a mobile home and outbuildings were destroyed just west of Pottawatomie Road within the city limits of Oklahoma City. The tornado continued to expand in size as it approached the Canadian River and the Cleveland County line. The tornado then turned more east and then east-northeast after crossing I Violent EF4 damage was again observed as it began to move into progressively higher density residental areas approaching May Avenue.
After crossing Western Avenue, numerous buildings were destroyed and horses killed at Orr Family Farm. Two storage tanks estimated to weigh approximately 10 tons were lifted from Orr Family Farm and landed about one-half mile east. Despite the destruction of this elementary school during school hours, no fatalities occurred at the school. As the tornado continued to move east and east-northeast, it moved through much more densely populated suburban neighborhoods of southwest Oklahoma City and Moore where violent destruction was widespread.
The width of EF4 and greater damage was up to yards wide as the tornado moved through neighborhoods east of Western Avenue.
The first two fatalities occurred in a house in the neighborhood just east of Briarwood Elementary, with another fatality in a house as the tornado approached Santa Fe Avenue. Damage to the school was extensive and seven children were killed when a wall collapsed at the school. Nine other people were killed in eight different neighborhood homes within one-quarter mile of Plaza Towers Elementary, most occurring just south of the school.
The tornado turned northeast as it approached Telephone Road, made a loop near the intersection of Telephone Road and 4th Street, then moved southeast crossing the interstate. Three people were killed when a convenience store along Telephone Road was destroyed. Crossing Telephone Road, the tornado inflicted significant damage to the Moore Medical Center, a post office and numerous businesses along Telephone Road and U.
Although the tornado was more narrow after crossing I, it continued to produce EF4 damage in neighborhoods east of the interstate as it curved east and then again east-northeast.
One fatality occurred at a business just east of the interstate, and one final fatality occurred in a home between Eastern Avenue and Bryant Avenue. The density of housing also decreased east of Bryant Avenue as the tornado moved east and east-northeast before dissipating east of Air Depot Blvd. The Doppler on Wheels mobile radar detected a long-lived anticyclonic tornado southwest of Yukon.
A storm damage survey team later confirmed damage produced by the tornado. Some structural damage was noted along with damage to trees. The tornado moved just south of east for a little over 1. Damage to trees and power lines was noted, as well as very minor structural damage to some homes.
Buildings, power lines and trees were damaged, including broken windows at a couple of motels along Meridian Avenue. Minor damage to trees and power lines was noted. Damage to several homes, trees, and power lines and poles occurred. Roof and tree damage occurred with this tornado. No damage is known to have occurred. Two outbuildings were severely damaged and three houses suffered damage to roof shingles.
This small tornado was embedded within a large area of severe thunderstorm winds. A tornado touched down near Southeast 59th Street and Eastern Avenue in Oklahoma City, and moved north along Eastern Avenue , then northwest crossing Interstate 35 near and south of Southeast 44th Street before turning west and dissipating near Southeast 44th Street and Lindsay Avenue.
The most significant damage occurred just east of Interstate 35 where a motel sustained significant damage losing most walls on the second floor, and significant damage to many recreational vehicles at an adjacent RV park. While not directly related to the tornado, one woman perished while seeking shelter from the tornado in a below-ground storm cellar.
Heavy rains flooded the cellar and the woman drowned. A weak tornado, embedded within a larger area of damaging thunderstorm winds, developed near SW 59th Street and Sara Road on the north side of Mustang, and moved northeast crossing into Oklahoma County just south of SW 29th Street. In Canadian County, two outbuildings suffered roof damage, but the primary damage was to trees along the path.
One house near the end of the tornado path suffered significant roof damage. Otherwise, damage along the path was primarily to trees and power lines. This tornado produced damage to a power pole just south of NE 23rd Street and a snapped a few tree branches along the path.
One tree snapped falling onto a carport and car along Prospect Avenue. Although no structure damage was noted in the shopping center, several trees were snapped, and three employee cars were blown about 50 yards into bollards in front of JC Penney. Sporadic tree damage was noted as the tornado moved northeast to near Hiwassee Road and Wilshire Boulevard intermittently causing damage.
The only structure damage noted along the path was to an aviation plant which suffered significant roof damage northeast of SE 15th Street and Midwest Boulevard in Midwest City, and some roof damage along Post Road. Many trees were snapped or damaged along the path.
Some homes in a neighborhood along Edwin Road just east of Anderson Road suffered damage, with one receiving significant roof damage. The tornado moved generally northeast across east Edmond, crossing the northwestern portion of Arcadia Lake, then dissipating southeast of Danforth Road and Midwest Boulevard.
Except for power pole and fencing damage at the beginning of the path, damage was limited to sporadic tree damage. The tornado then produced sporadic tree damage as it move northeast to near NE 63rd Street and Peebly Road. Fujita Scale or F Scale of tornado damage intensity. The F Scale was developed based on damage intensity and not wind speed; wind speed ranges given are estimated, based on the extent of observed damage.
The Enhanced Fujita Scale or EF Scale, which became operational on February 1, , is used to assign a tornado a 'rating' based on estimated wind speeds and related damage. When tornado-related damage is surveyed, it is compared to a list of Damage Indicators DIs and Degrees of Damage DoD which help estimate better the range of wind speeds the tornado likely produced. From that, a rating from EF0 to EF5 is assigned.
The EF Scale was revised from the original Fujita Scale to reflect better examinations of tornado damage surveys so as to align wind speeds more closely with associated storm damage. The new scale has to do with how most structures are designed. Its uses three-second gusts estimated at the point of damage based on a judgment of 8 levels of damage to the 28 indicators listed below. These estimates vary with height and exposure.
Important: The 3 second gust is not the same wind as in standard surface observations. Standard measurements are taken by weather stations in open exposures, using a directly measured, "one minute mile" speed. The goal is assign an EF Scale category based on the highest wind speed that occurred within the damage path.
First, trained NWS personnel will identify the appropriate damage indicator DI [see list below] from more than one of the 28 used in rating the damage.
The construction or description of a building should match the DI being considered, and the observed damage should match one of the 8 degrees of damage DOD used by the scale. The tornado evaluator will then make a judgment within the range of upper and lower bound wind speeds, as to whether the wind speed to cause the damage is higher or lower than the expected value for the particular DOD.
This is done for several structures not just one, before a final EF rating is determined. Boren Blvd. Suite Norman, OK Comments? Please Contact Us.
Please try another search. Multiple locations were found. Please select one of the following:. Location Help. Flooding Threat on East and West Coasts Heavy rain combined with high snow levels may produce flash flooding and debris flows near burn scars today over western portions of Washington and Oregon. Customize Your Weather. Privacy Policy. Current Hazards. Current Conditions. Rivers and Lakes. Climate and Past Weather. Besides trees, damage was also observed to house roofs, porches and car ports with evidence of debris lofted.
This tornado developed just west of NW 20th Street and Blackwelder Avenue and initially moved east-northeast. A restaurant near NW 23rd Street and Douglas suffered roof damage on the east side of the building, and windows were broken in a building that had previously housed Rainbow Records at NW 23rd and Classen.
Elsewhere along the path, trees and power lines were damaged as well as roof damage to one home, an damaged outbuilding, and street signs along NW 23rd. A church sign was destroyed and large trees were uprooted although in ground that was much wetter than usual after recent heavy rainfall. One of these trees fell onto a parked car. Some damage to chimneys; branches broken off trees, shallow-rooted trees uprooted, sign boards damaged.
One F1 Weak mph Moderate damage. Roof surfaces peeled off; mobile homes pushed foundations or overturned; moving autos pushed off road. Two F2 Strong mph Considerable damage.
Roofs torn from frame houses; mobile homes demolished; boxcars pushed over; large trees snapped or uprooted; light objects become projectiles. Three F3 Strong mph Severe damage. Roofs and some walls torn from well- constructed houses; trains overturned; most trees in forested area uprooted; heavy cars lifted and thrown. Four F4 Violent mph Devastating damage. Well- constructed houses leveled; structures with weak foundation blown some distance; cars thrown; large missiles generated.
Five F5 Violent mph Incredible damage. Strong frame houses lifted off foundations, carried considerable distances, and disintegrated; auto-sized missiles airborne for several hundred feet or more; trees debarked.
LRB 18 Mid-rise story bldg. References Fujita, T. PB , Univ. Grazulis, T. Environmental Films, St. Johnsbury, Vermont, pp. Follow us on Twitter. Follow us on Facebook.
Follow us on YouTube. Disclaimer Information Quality Help Glossary. Just north of Goldsby - South part of Norman - 3. Moved northeastward across the SE part of the city. Touched down briefly in a wheat field at the N edge of OKC. Tornado damaged an apartment complex in Midwest City. Data sources: D. An area of damage consistent with a narrow QLCS tornado was found within a larger swath of damaging winds. A second area consistent with a tornado was observed within a larger swath of thunderstorm wind damage as a Quasi-Linear Convective System moved through.
Within the larger area of thunderstorm wind damage, a small tornado developed just southeast of NE 42nd Street and Kelley Avenue and moved northeast to near NE 43rd Street and Everest Avenue. Figure 1. He's optimistic that tornado forecasting will improve as computers and tornado modeling software become more powerful, and as more environmental data such as temperature and dew point measurements are gathered close to tornado-spawning storms by instruments and tornado researchers.
All rights reserved. Tornado Forecasting At the moment, tornadoes are much more difficult to forecast than hurricanes. Part of the difficulty, Karstens said, is that tornadoes are much smaller than hurricanes. Lee contributed reporting to this article. Share Tweet Email. Why it's so hard to treat pain in infants. This wild African cat has adapted to life in a big city. Animals Wild Cities This wild African cat has adapted to life in a big city Caracals have learned to hunt around the urban edges of Cape Town, though the predator faces many threats, such as getting hit by cars.
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Animals Wild Cities Wild parakeets have taken a liking to London. Animals Wild Cities Morocco has 3 million stray dogs. Meet the people trying to help. Animals Whales eat three times more than previously thought. Environment COP26 nears conclusion with mixed signals and frustration. Seventy-five percent of the world's tornadoes hit in the U. That's more than 1, per year. Canada, at No. And nowhere are they more common than in the swath of the nation's midsection centered around Texas, Oklahoma, Kansas, and the states to the north.
What makes tornadoes so common there? The Rockies block moist air from flowing eastward. This clears the way for frigid Arctic air to stream south from Canada over the Great Plains.
These cold blasts then run into warm, humid air coming up from the Gulf of Mexico. When these cold and warm air masses collide , they cause powerful rotating updrafts and downdrafts that can create dangerous thunderstorms known as "supercells," which in turn spawn powerful tornadoes.
Is that what happened this time? Tornado season — which peaks in April — had been unusually weak this spring. There were only 72 tornadoes nationwide in April, which is 70 percent below the year average. But in the last week, a cold front ran into warm air blowing north from the Gulf of Mexico. The cold air acted as a wedge, pushing up the less dense warm air, creating swirling gyres. Some flipped vertically into tornadoes.
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