Storms formed along the dryline in the Texas panhandle on the afternoon of the 16th before moving eastward. As a cold front caught up to the storms, convection increased and storms began to form into a line. This line continued eastward across the state overnight into the 17th.

Thunderstorm Wind in BECKHAM, OKLAHOMA
From 16-MAY-17 18:08:00 to 16-MAY-17 18:08:00 (CST-6)
Location: CARTER
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Power lines and debris blown onto highway 34.

Thunderstorm Wind in BECKHAM, OKLAHOMA
From 16-MAY-17 18:10:00 to 16-MAY-17 18:10:00 (CST-6)
Location: ELK CITY
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BECKHAM, OKLAHOMA
From 16-MAY-17 18:15:00 to 16-MAY-17 18:15:00 (CST-6)
Location: ELK CITY
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BECKHAM, OKLAHOMA
From 16-MAY-17 18:35:00 to 16-MAY-17 18:35:00 (CST-6)
Location: ELK CITY
Magnitude: 65.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Numerous homes and structures were damaged including roofs removed. One home collapsed.

Thunderstorm Wind in CADDO, OKLAHOMA
From 16-MAY-17 20:33:00 to 16-MAY-17 20:33:00 (CST-6)
Location: EAKLY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

No damage reported.

Thunderstorm Wind in KIOWA, OKLAHOMA
From 16-MAY-17 21:02:00 to 16-MAY-17 21:02:00 (CST-6)
Location: ROOSEVELT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

No damage reported.

Hail in BECKHAM, OKLAHOMA
From 16-MAY-17 17:57:00 to 16-MAY-17 17:57:00 (CST-6)
Location: CARTER
Magnitude: 4.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ROGER MILLS, OKLAHOMA
From 16-MAY-17 18:06:00 to 16-MAY-17 18:06:00 (CST-6)
Location: REYDON
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Power poles downed by winds.

Hail in BECKHAM, OKLAHOMA
From 16-MAY-17 17:26:00 to 16-MAY-17 17:26:00 (CST-6)
Location: ERICK
Magnitude: 4.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in BECKHAM, OKLAHOMA
From 16-MAY-17 17:29:00 to 16-MAY-17 17:29:00 (CST-6)
Location: ERICK
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in BECKHAM, OKLAHOMA
From 16-MAY-17 17:12:00 to 16-MAY-17 17:12:00 (CST-6)
Location: ERICK
Magnitude: 3.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BECKHAM, OKLAHOMA
From 16-MAY-17 16:55:00 to 16-MAY-17 16:55:00 (CST-6)
Location: ERICK
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in BECKHAM, OKLAHOMA
From 16-MAY-17 17:31:00 to 16-MAY-17 17:31:00 (CST-6)
Location: SAYRE
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in BECKHAM, OKLAHOMA
From 16-MAY-17 17:38:00 to 16-MAY-17 17:38:00 (CST-6)
Location: SAYRE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in BECKHAM, OKLAHOMA
From 16-MAY-17 17:44:00 to 16-MAY-17 17:44:00 (CST-6)
Location: SAYRE
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in ROGER MILLS, OKLAHOMA
From 16-MAY-17 22:00:00 to 17-MAY-17 01:00:00 (CST-6)
Location: STRONG CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Debris filled flood waters were running over highway 283.

Flash Flood in WOODWARD, OKLAHOMA
From 16-MAY-17 22:30:00 to 17-MAY-17 01:30:00 (CST-6)
Location: MUTUAL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Flash flooding washed mud and debris over county road 54 east of Mutual. Time estimated.

Thunderstorm Wind in COMANCHE, OKLAHOMA
From 16-MAY-17 22:48:00 to 16-MAY-17 22:48:00 (CST-6)
Location: LAWTON
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in GRADY, OKLAHOMA
From 16-MAY-17 23:25:00 to 16-MAY-17 23:25:00 (CST-6)
Location: NORGE
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in MCCLAIN, OKLAHOMA
From 16-MAY-17 23:45:00 to 16-MAY-17 23:45:00 (CST-6)
Location: NEWCASTLE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

No damage reported.

Thunderstorm Wind in COTTON, OKLAHOMA
From 16-MAY-17 23:45:00 to 16-MAY-17 23:45:00 (CST-6)
Location: WALTERS ARPT
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 17-MAY-17 00:10:00 to 17-MAY-17 00:10:00 (CST-6)
Location: WHEATLAND
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Power poles and power lines were damaged along SW 29th street from Council to Rockwell.

Thunderstorm Wind in LOGAN, OKLAHOMA
From 17-MAY-17 00:20:00 to 17-MAY-17 00:20:00 (CST-6)
Location: SEWARD
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Tornado in BECKHAM, OKLAHOMA
From 16-MAY-17 17:08:00 to 16-MAY-17 17:11:00 (CST-6)
Location: ERICK
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

The Erick Fire Department and storm chasers observed a tornado south of the entrance to Sandy Sanders Wildlife Management Area on State Highway 30. No damage was reported.

Tornado in BECKHAM, OKLAHOMA
From 16-MAY-17 17:23:00 to 16-MAY-17 17:25:00 (CST-6)
Location: ERICK
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

An NWS employee observed a tornado from an occluded mesocyclone to the south-southeast of Erick. The tornado was observed for about two minutes. No damage was reported and the specific path is estimated.

Thunderstorm Wind in MCCLAIN, OKLAHOMA
From 16-MAY-17 23:40:00 to 16-MAY-17 23:40:00 (CST-6)
Location: DIBBLE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Two homes suffered roof damage (one was still under construction), and several trees were damaged south of Dibble.

Tornado in BECKHAM, OKLAHOMA
From 16-MAY-17 17:46:00 to 16-MAY-17 18:12:00 (CST-6)
Location: CARTER
Tornado F-scale: EF2
Property damage: 25.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

The Elk City tornado initially developed near the North Fork of the Red River about 3 miles northwest of Carter. Damage was primarily to trees and power poles for the first few miles as it moved northeast approaching State Highway 34.
One fatality occurred on State Highway 34 (Merritt Road) south of State Highway 152 when his vehicle was impacted by the tornado. According to law enforcement, the victim had been in a mobile home, then left in his vehicle to try and find more substantial shelter. He had returned to his mobile home and it's believed he was still in the vehicle when the tornado hit.
Moving northeast, permanent homes and mobile homes were damaged, and damage continued to power poles and trees. About two miles southwest of Elk City Reservoir, damage intensity with persistent EF-2 damage into Elk City as the tornado continued northeast over Elk City Reservoir and through a neighborhood on south side of Elk City just west of State Highway 6. Numerous homes were damaged and mobile homes damaged or destroyed from southwest of Elk City Reservoir through the south side of Elk City. The tornado continued moving east-northeast out of Elk City and moved into Washita County.
Damage assessments found 66 homes destroyed (62 in Elk City) and 140 homes damaged (126 in Elk City). In addition, 3 businesses were destroyed and 5 businesses were damaged by the tornado. Damage costs are a rough estimate.

Tornado in ROGER MILLS, OKLAHOMA
From 16-MAY-17 17:18:00 to 16-MAY-17 17:30:00 (CST-6)
Location: REYDON
Tornado F-scale: EF2
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Firefighters observed a tornado develop about 6 miles south of Reydon at 6:18 pm CDT. Power poles were snapped along SH-30. The roof of a barn was removed and additional power poles were snapped as the tornado moved northeast between SH-30 and SH-47. Numerous power poles were snapped near SH-47. The tornado moved northeast, then east-northeast snapping additional power poles, uprooting trees, took the roof off a ranch hotel, and turned over a 16-foot grain feeder that was full of grain. Damage costs are a rough estimate.

Tornado in ROGER MILLS, OKLAHOMA
From 16-MAY-17 17:45:00 to 16-MAY-17 17:46:00 (CST-6)
Location: ROLL
Tornado F-scale: EF1
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tornado damaged the water tank off a well site and blew over a cottonwood tree between Roll and Strong City.

Tornado in WASHITA, OKLAHOMA
From 16-MAY-17 18:12:00 to 16-MAY-17 18:18:00 (CST-6)
Location: CANUTE
Tornado F-scale: EF2
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The Elk City tornado moved into Washita County and moved northeast about 3 miles before dissipating. Three outbuildings were damaged or destroyed and one house received minor damage. Otherwise, damage was primarily to trees and power lines in Washita County. Damage costs were roughly estimated.

Hail in BECKHAM, OKLAHOMA
From 16-MAY-17 17:31:00 to 16-MAY-17 17:31:00 (CST-6)
Location: SAYRE
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue