Thunderstorms developed along and south of a stationary frontal boundary that extended across southeastern Kansas through southwestern Oklahoma during the evening hours of the 17th. This frontal boundary surged southward as a cold front overnight, increasing the thunderstorm activity over eastern Oklahoma as it moved into warm, moist, and unstable air. The thunderstorms evolved into a bow echo that moved rapidly east-northeast across the region producing damaging wind, some large hail, and locally heavy rainfall as thunderstorms moved repeatedly across the same areas. Tornadoes developed across northeastern Oklahoma in the storms that moved along the frontal boundary.

Tornado in TULSA, OKLAHOMA
From 17-APR-13 23:03:00 to 17-APR-13 23:05:00 (CST-6)
Location: BIXBY
Tornado F-scale: EF1
Property damage: 250.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado severely damaged the second story of a permanent home and damaged many others. Some windows were blown out of a few homes. Trees were uprooted and numerous large limbs were snapped. The tornado moved north-northeast then curved slightly north. Based on this damage, maximum estimated wind in the tornado was 90 to 100 mph.

Tornado in TULSA, OKLAHOMA
From 17-APR-13 23:01:00 to 17-APR-13 23:03:00 (CST-6)
Location: BIXBY
Tornado F-scale: EF0
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado damaged a number of homes and snapped numerous large tree limbs as it moved north and then curved to the northwest. Based on this damage, maximum estimated wind in the tornado was 80 to 85 mph.

Tornado in ROGERS, OKLAHOMA
From 17-APR-13 23:29:00 to 17-APR-13 23:32:00 (CST-6)
Location: INOLA
Tornado F-scale: EF1
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado overturned several empty rail cars, destroyed a mobile home, and damaged several permanent homes. The tornado traveled northeast and then curved more northerly before it dissipated. Based on the damage, maximum estimated wind in the tornado was 100 to 110 mph.

Tornado in MAYES, OKLAHOMA
From 17-APR-13 23:48:00 to 17-APR-13 23:58:00 (CST-6)
Location: PRYOR CREEK ARPT
Tornado F-scale: EF1
Property damage: 30.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado tore much of the roof off of an industrial building on Highway 69A on the north side of the Mid-America Industrial Complex. It also destroyed a barn, snapped numerous large tree limbs, and uprooted a couple trees. Based on this damage, maximum estimated wind in the tornado was 85 to 95 mph.

Tornado in TULSA, OKLAHOMA
From 17-APR-13 22:50:00 to 17-APR-13 22:51:00 (CST-6)
Location: GLENPOOL
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A KOTV meteorologist observed a tornado crossing Highway 75. This tornado blew a vehicle off the road into the median and damaged trees.

Tornado in ROGERS, OKLAHOMA
From 17-APR-13 23:28:00 to 17-APR-13 23:29:00 (CST-6)
Location: INOLA
Tornado F-scale: EF0
Property damage: 40.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado severely damaged a barn, blew down numerous large tree limbs, and did minor damage to the roof of a home. Based on this damage, maximum estimated wind in the tornado was 70 to 75 mph.

Tornado in ROGERS, OKLAHOMA
From 17-APR-13 23:33:00 to 17-APR-13 23:36:00 (CST-6)
Location: INOLA
Tornado F-scale: EF1
Property damage: 80.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado damaged the roofs of a number of homes and badly damaged a metal frame building. It also destroyed an outbuilding. The tornado initially moved east-northeast before turning sharply north. Before it dissipated, the tornado veered toward the east as it was influenced by a larger area of rotation within the storm complex. Based on the damage, estimated maximum wind in the tornado was 90 to 95 mph.

Tornado in DELAWARE, OKLAHOMA
From 18-APR-13 00:30:00 to 18-APR-13 00:40:00 (CST-6)
Location: ZENA
Tornado F-scale: EF2
Property damage: 400.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado developed along the leading edge of the bow echo. Near the beginning of its track, it destroyed a large swath of hardwood trees and severely damaged a home. Several other homes were damaged by the tornado, barns and outbuildings were destroyed, and power poles were snapped. Based on this damage, maximum estimated wind in the tornado was 115 to 125 mph.

Thunderstorm Wind in TULSA, OKLAHOMA
From 17-APR-13 22:50:00 to 17-APR-13 22:50:00 (CST-6)
Location: GLENPOOL
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Strong thunderstorm wind blowing from the southeast snapped large tree limbs from hardwood trees.

Hail in TULSA, OKLAHOMA
From 17-APR-13 22:55:00 to 17-APR-13 22:55:00 (CST-6)
Location: GLENPOOL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in OKFUSKEE, OKLAHOMA
From 17-APR-13 22:18:00 to 17-APR-13 22:18:00 (CST-6)
Location: HAYDENVILLE
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down several trees in the Haydenville area.

Thunderstorm Wind in OSAGE, OKLAHOMA
From 17-APR-13 21:44:00 to 17-APR-13 21:44:00 (CST-6)
Location: TULSA
Magnitude: 56.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Strong thunderstorm wind damaged a fence and snapped large tree limbs.

Thunderstorm Wind in OKMULGEE, OKLAHOMA
From 17-APR-13 22:36:00 to 17-APR-13 22:36:00 (CST-6)
Location: BEGGS
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous tree limbs were blown down by strong thunderstorm winds.

Thunderstorm Wind in TULSA, OKLAHOMA
From 17-APR-13 23:05:00 to 17-APR-13 23:05:00 (CST-6)
Location: BROKEN ARROW
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong thunderstorm wind blew down large tree limbs.

Thunderstorm Wind in WAGONER, OKLAHOMA
From 17-APR-13 23:05:00 to 17-APR-13 23:05:00 (CST-6)
Location: STONEBLUFF
Magnitude: 70.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Strong thunderstorm wind blew siding off a home and blew down a large tree.

Flash Flood in OKMULGEE, OKLAHOMA
From 17-APR-13 23:45:00 to 18-APR-13 03:30:00 (CST-6)
Location: MORRIS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Highway 52 north of Morris was reported flooded.

Flash Flood in OKMULGEE, OKLAHOMA
From 18-APR-13 00:00:00 to 18-APR-13 03:30:00 (CST-6)
Location: BEGGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Portions of Highway 16 near Beggs were reported flooded.

Tornado in MAYES, OKLAHOMA
From 18-APR-13 00:07:00 to 18-APR-13 00:13:00 (CST-6)
Location: SPAVINAW
Tornado F-scale: EF1
Property damage: 750.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado developed in the cyclonic comma head of the bow echo, well behind the intial gust front. It damaged numerous homes and businesses in Spavinaw and tore much of the roof off of the school. Several mobile homes were destroyed, numerous trees were snapped or uprooted, and numerous power poles were snapped. Based on this damage, maximum estimated wind in the tornado was 100 to 110 mph.

Thunderstorm Wind in CHEROKEE, OKLAHOMA
From 18-APR-13 00:44:00 to 18-APR-13 00:44:00 (CST-6)
Location: SCRAPER
Magnitude: 74.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Strong thunderstorm wind uprooted several large trees and damaged a poultry house.

Flash Flood in TULSA, OKLAHOMA
From 18-APR-13 01:39:00 to 18-APR-13 03:30:00 (CST-6)
Location: BROKEN ARROW ARPK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flooding was reported near 111th Street South and Mingo Road.

Flash Flood in MUSKOGEE, OKLAHOMA
From 18-APR-13 02:00:00 to 18-APR-13 03:30:00 (CST-6)
Location: HASKELL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Several roads were reported under water and impassable in the Haskell area.

Flash Flood in WAGONER, OKLAHOMA
From 18-APR-13 03:00:00 to 18-APR-13 04:00:00 (CST-6)
Location: LA BARGE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Street flooding was reported in and around town.

Thunderstorm Wind in MCINTOSH, OKLAHOMA
From 18-APR-13 03:05:00 to 18-APR-13 03:05:00 (CST-6)
Location: ONAPA
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind damaged the roof of a home.

Flash Flood in MAYES, OKLAHOMA
From 18-APR-13 03:00:00 to 18-APR-13 04:00:00 (CST-6)
Location: SALINA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Portions of Highway 82 were flooded and impassable between Salina and Spavinaw.

Flash Flood in MAYES, OKLAHOMA
From 18-APR-13 03:00:00 to 18-APR-13 04:00:00 (CST-6)
Location: MAZIE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Portions of Highway 69 were flooded near the Mayes and Wagoner County line.

Flood in CHEROKEE, OKLAHOMA
From 18-APR-13 05:52:00 to 18-APR-13 10:00:00 (CST-6)
Location: PEGGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Widespread flooding was reported in Peggs. Several roads were impassable.

Flood in MAYES, OKLAHOMA
From 18-APR-13 06:30:00 to 18-APR-13 10:00:00 (CST-6)
Location: LANGLEY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Several roadways and low water crossings were reported flooded.

Flood in MAYES, OKLAHOMA
From 18-APR-13 07:10:00 to 18-APR-13 10:00:00 (CST-6)
Location: MAZIE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A truck was stranded in high water.

Flash Flood in OKFUSKEE, OKLAHOMA
From 18-APR-13 02:00:00 to 18-APR-13 03:30:00 (CST-6)
Location: WELTY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A culvert was washed out on Highway 97 west of Welty.

Flash Flood in DELAWARE, OKLAHOMA
From 18-APR-13 02:21:00 to 18-APR-13 06:30:00 (CST-6)
Location: KANSAS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Several streets were reported flooded in and around Kansas.

Flash Flood in MAYES, OKLAHOMA
From 18-APR-13 03:00:00 to 18-APR-13 04:00:00 (CST-6)
Location: MAZIE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A section of Highway 69 near Mazie was temporarily closed due to high water over the roadway.

Flood in OKMULGEE, OKLAHOMA
From 18-APR-13 08:30:00 to 18-APR-13 17:30:00 (CST-6)
Location: HECTOR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

The intersection of Bixby Road and Hectorville Road was reported flooded.

Flood in DELAWARE, OKLAHOMA
From 18-APR-13 09:30:00 to 18-APR-13 18:00:00 (CST-6)
Location: TWIN OAKS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Flooding was reported on a highway in Twin Oaks.

Thunderstorm Wind in CREEK, OKLAHOMA
From 17-APR-13 22:15:00 to 17-APR-13 22:15:00 (CST-6)
Location: TUSKEGEE
Magnitude: 74.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Strong thunderstorm wind uprooted several hardwood trees.