Information on this webpage is considered preliminary and will continue to be updated as the event is analyzed.

Anyone with information that could enhance the record of these storms should contact the National Weather Service Office in Tulsa at 918-838-7838 during business hours, submit an online storm report, or send us an email at: sr-tsa.stormreport@noaa.gov. Information can also be posted on our Facebook page.

 

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Meteorological Data from SPC Rainfall Totals
  Liberty Tornado Broken Arrow #1 Tornado Broken Arrow #2 Tornado
  Inola #1 Tornado Inola #2 Tornado Inola #3 Tornado
  Salina Tornado Spavinaw Tornado Butler Tornado
    Other Event Images Return to all Weather Events webpage

Event Summary - 17-18 April 2013 Tornado and Flood Event

During the evening of the April 17, 2013 and into the morning of the 18th, severe thunderstorms and flooding occurred across northeast Oklahoma and northwest Arkansas. On the morning of the 17th, a warm front surged north into Kansas and Missouri setting the stage for the severe weather and flooding later in the evening. Thunderstorms developed along the front as it moved into Central and Northeast Oklahoma as a cold front during the afternoon and evening hours of the 17th. As the front moved slowly to the east, storms moved to the northeast along the frontal boundary, leading to flooding as the storms moving repeatedly across the same area.

There were several rounds of thunderstorms across northeast Oklahoma and northwest Arkansas, with a line of severe thunderstorms occurring late in the evening and into the early morning hours. This line of thunderstorms evolved into a bow echo and moved swiftly across northeast OK and northwest AR, producing wind damage, large hail, and several tornadoes.  The tornadoes were associated with rather brief circulations that apparently evolved from the interaction of thunderstorms near the apex of the bow with the quasi-stationary frontal boundary.  Tornado damage was reported in Broken Arrow, Inola, Salina, Spavinaw, and Butler (near Grove) in northeast Oklahoma.  Specific details about these tornadoes can be found below.

Flooding was widespread across east-central Oklahoma into far northwest Arkansas, where the rainfall amounts were most impressive: 3" to 5" with some isolated reports of up to 7".  Several State Highways were impassible due to high water, as well as many smaller city, town, and county roads. The heaviest rain fell over the Deep Fork River and Illinois River basins, causing flooding along Flint Creek near Kansas and the Illinois River near Watts and near Tahlequah

24-hr rainfall measurements >3.50” ending 7am 4/18/13
Wagoner 4.1ESE, OK 7.00   Haskell 2E, OK 4.99   Locust Grove 4S, OK 4.67
Kansas 6ESE, OK 4.66   Pea Ridge, AR 4.58   Little Frock 2NNE, AR 4.20
Bristow 4SSE, OK 4.12   West Siloam Springs, OK 4.06   Bentonville 0.9NW, AR 4.00
Decatur 2.6ESE, AR 3.96   Bentonville 2.8SSW, AR 3.90   Porter 3ESE, OK 3.85
Bella Vista 1ESE, AR 3.80   Centerton 0.8SW, AR 3.65   Inola 6SSW, OK (L&D 18) 3.60
Colcord 4N, OK 3.56   Jay 3.3 NNE, OK 3.50      

 

This Preliminary Event Impact Map will be updated as additional information is received.  Click on the icons within the map for additional details and/or images related to that impact.  Tornado information can be found by clicking on the track.  Individual tornado track maps and images may be available below the overview Event Impact Map.

Tornado Tracks: Due to mapping/GPS software differences and road accessibility along the track, use the plotted tracks for general reference only. Tornado tracks may be updated and/or changed due to storm damage surveys, data analysis, and eyewitness reports. Colored icons represent the Storm Survey rating assigned to surveyed damage. Click on the icon for additional information and available photos. You may need to zoom in tightly to see all the available data points when data points are logged close to one another.  Links to photos are available in the upper portion of the text window that opens when you click on one of the colored data icons or points. 

Tornado, Hail, Wind, and Flood Reports: Click on the icon for the time, location, and description of the storm report. Note that these reports are preliminary and the time and/or location may not be accurate. Click here to submit your storm report.

You can download the .kmz file displayed on the map by clicking on the layer name located just above the map.

Survey Legend

 


 
 
Maps
Cities/Roads: Counties:


 Preliminary Tornado Information (last updated 9:00 pm 4/22/13):

Information from this event is still considered preliminary and will be modified based on additional information that may become available to us.  Anyone with information that could enhance the record of this event should contact the National Weather Service Office in Tulsa at 918-838-7838 during business hours, or send us an email at sr-tsa.stormreport@noaa.gov, or submit an online report

Damage images for each tornado can be found by clicking on the icons within the track map.  Additional images related to each tornado can be enlarged by clicking.  Hover your mouse over the image for a caption.

Liberty Tornado (Tulsa County OK)
EF-Scale EF-0
Damage:
Maximum Estimated Wind Speed 65-75 mph A KOTV meteorologist observed this tornado crossing Hwy 75 just north of 201st Street South in southern Tulsa County.  The tornado blew a vehicle off the road and onto the center median.  It also did some minor tree damage.
Path Length 0.5 miles
Maximum Path Width 50 yards
Start Location and Time 2.4 miles northwest of Liberty, OK at 11:50 pm CDT April 17, 2013
End Location and Time 2.4 miles northwest of Liberty, OK at 11:51 pm CDT April 17, 2013


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radar image of Liberty tornado



 

Broken Arrow #1 Tornado (Tulsa County OK)
EF-Scale EF-0
Damage:
Maximum Estimated Wind Speed 80-85 mph The tornado damaged a number of homes and snapped numerous large tree limbs.  The tornado moved north and then curved northwest.
Path Length 1.3 miles
Maximum Path Width 250 yards
Start Location and Time 6.0 miles south-southwest of Broken Arrow, OK at 12:01 am CDT April 18, 2013
End Location and Time 6.0 miles soutwest of Broken Arrow, OK at 12:03 am CDT April 18, 2013


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radar image of Broken Arrow rotation



 

Broken Arrow #2 Tornado (Tulsa County OK)
EF-Scale EF-1
Damage:
Maximum Estimated Wind Speed 90-100 mph This tornado severly damaged the second story of a permanent home and damaged many others. Some windows in a few homes were blown out.  Trees were uprooted and large tree branches were snapped.  This tornado moved north-northeast, then curved slightly north.
Path Length 2.1 miles
Maximum Path Width 400 yards
Start Location and Time 6.6 miles southwest of Broken Arrow, OK at 12:03 am CDT April 18, 2013
End Location and Time 4.6 miles southwest of Broken Arrow, OK at 12:05 am CDT April 18, 2013


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radar image of Broken Arrow rotation
roof damage in Broken Arrow
 
 

 

Inola #1 Tornado (Rogers County OK)
EF-Scale EF-0
Damage:
Maximum Estimated Wind Speed 70-75 mph This tornado badly damaged a barn, downed several trees, and did minor damage to the roof of a home.  The tornado traveled northeast.
Path Length 0.9 miles
Maximum Path Width 125 yards
Start Location and Time 3.9 miles southwest of Inola, OK at 12:28 am CDT April 18, 2013
End Location and Time 3.0 miles southwest of Inola, OK at 12:29 am CDT April 18, 2013


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radar image of Inola rotation
 
 
 

 

Inola #2 Tornado (Rogers County OK)
EF-Scale EF-1
Damage:
Maximum Estimated Wind Speed 100-110 mph This tornado overturned several empty rail cars, destroyed a mobile home, and damaged several other homes.  The tornado traveled northeast and then more northerly the last half of its existence.
Path Length 1.8 miles
Maximum Path Width 140 yards
Start Location and Time 2.2 miles southwest of Inola, OK at 12:29 am CDT April 18, 2013
End Location and Time 1.1 miles southeast of Inola, OK at 12:32 am CDT April 18, 2013


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radar image of Inola rotation
rail cars blown off tracks


 

Inola #3 Tornado (Rogers County OK)
EF-Scale EF-1
Damage:
Maximum Estimated Wind Speed 90-95 mph This tornado damaged the roofs of a number of homes and bdly damaged a metal frame building, destroying a smaller outbuilding.  This tornado's path is the most complex of the three.  The tornado initially moved east-northeast before turning sharply north.  Near the end of its existence, the tornado veered toward the east as complex interactions occurred within the broader area of rotation.
Path Length 1.9 miles
Maximum Path Width 180 yards
Start Location and Time 0.6 miles southeast of Inola, OK at 12:33 am CDT April 18, 2013
End Location and Time 1.9 miles east-northeast of Inola, OK at 12:36 am CDT April 18, 2013


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radar image of Inola rotation



 

Salina Tornado (Mayes County OK)
EF-Scale EF-1
Damage:
Maximum Estimated Wind Speed 85-95 mph This tornado tore much of the roof off of an industrial building on Hwy 69A on the north side of the Mid-American industrial complex, destroyed a barn, snapped numerous large tree limbs, and uprooted a couple of trees.
Path Length 6.5 miles
Maximum Path Width 100 yards
Start Location and Time 5.4 miles northeast of Chouteau, OK at 12:48 am CDT April 18, 2013
End Location and Time 2.4 miles northwest of Salina, OK at 12:58 am CDT April 18, 2013


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radar image of Salina rotation



 

Spavinaw Tornado (Mayes County OK)
EF-Scale EF-1
Damage:
Maximum Estimated Wind Speed 100-110 mph
This tornado developed in the cyclonic comma head of the bow echo, well behind the initial storm surge and gust front.  It developed south of East 440 Road southwest of Spavinaw, snapping and uprooting numerous trees as it approached the town.  Numerous homes were damaged, including several mobile homes that were destroyed, the roof of the school was severely damaged, trees and power poles were blown down, and several businesses were damaged as the tornado moved through the town.  It dissipated south of Highway 20 northeast of town.
Path Length 3.5 miles
Maximum Path Width 350 yards
Start Location and Time 2.1 miles southwest of Spavinaw, OK at 1:07 am CDT April 18, 2013
End Location and Time 1.4 miles northeast of Spavinaw, OK at 1:13 am CDT April 18, 2013


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radar image of Spavinaw rotation



 

Butler Tornado (Delaware County OK)
EF-Scale EF-2
Damage:
Maximum Estimated Wind Speed 115-125 mph
This tornado developed along the leading edge of the bow echo.  It formed just east of Highway 59, south of Highway 127.  The most intense stage of this tornado's lifecycle was early on as it produced an 800 yard wide corridor of impressive tree damage when it crossed the 638 Road and severely damaged a permanent home.  Numerous tress were snapped and uprooted, power poles were blown down, homes were damaged, and barns were destroyed as the tornado moved northeast.  It dissipated about 2 miles west of the Missouri state line, north of East 324 Road.
Path Length 8.0 miles
Maximum Path Width 800 yards
Start Location and Time 4.0 miles east of Zena, OK at 1:30 am CDT April 18, 2013
End Location and Time 7.0 miles southeast of Grove, OK at 1:40 am CDT April 18, 2013


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radar image of Grove rotation
radar image of Grove rotation


 

 

 Other Event Images

Image captions below the image.  Click on image to open a larger version in a new window.

Rainfall totals

24-hr Rainfall Totals ending at 2pm CDT April 18, 2013

 

 


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