With an upper low traversing the region, a cold front stationed over the panhandles, and a developing dryline, storms developed out in the panhandles early on the 16th and made their way eastward across Oklahoma through the day. Toward evening, when the severe weather occurred, the front surged eastward with a line of storms forming along it.

Thunderstorm Wind in JACKSON, OKLAHOMA
From 16-MAY-15 16:35:00 to 16-MAY-15 16:35:00 (CST-6)
Location: ELMER
Magnitude: 61.00 EG
Reported by: Storm Chaser

Shed was destroyed.

Thunderstorm Wind in KIOWA, OKLAHOMA
From 16-MAY-15 17:05:00 to 16-MAY-15 17:05:00 (CST-6)
Location: HOBART
Magnitude: 61.00 EG
Reported by: Fire Department/Rescue

Numerous trees were damaged. Several barns were damaged with shingles removed from homes. Time estimated from radar.

Thunderstorm Wind in MAJOR, OKLAHOMA
From 16-MAY-15 17:20:00 to 16-MAY-15 17:20:00 (CST-6)
Location: CLEO SPRINGS
Magnitude: 60.00 EG
Reported by: Law Enforcement

Trees blown down.

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 16-MAY-15 17:33:00 to 16-MAY-15 17:33:00 (CST-6)
Location: TIPTON
Magnitude: 56.00 EG
Reported by: Emergency Manager

Power lines downed east of Red River bridge on highway 5.

Tornado in JACKSON, OKLAHOMA
From 16-MAY-15 16:43:00 to 16-MAY-15 17:02:00 (CST-6)
Location: ELMER
Tornado F-scale: EF3
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado moved back into Jackson County from Wilbarger County Texas and moved across the southeast section of the county. Damage to trees, metal buildings and outbuildings were observed along US Highway 283 to the southeast of Elmer. Damage to homes and trees continued to be observed as the tornado moved east-northeast. The most significant damage was observed 3 to 4 miles east of Elmer (DI 1, DOD 8; DI 2, DOD 6; DI 21, DOD 7; DI 27, DOD 5). The tornadic motion seen on videos and the radar presentation indicate that this likely was a violent tornado through southeast Jackson County, although only EF3 damage was observed as the tornado moved through this relatively sparsely populated area. KFDR radar measured 115 knot gate-to-gate rotational velocity when the tornado was east of Elmer. The tornado continued east-northeast moving into Tillman County about 4 miles west of Tipton.

Tornado in KIOWA, OKLAHOMA
From 16-MAY-15 17:31:00 to 16-MAY-15 17:45:00 (CST-6)
Location: SNYDER
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado that originally began in northwest Hardeman County Texas moved into Kiowa County from Tillman County and finally ended it's 40-mile path about 3 miles east of Snyder. Damage in Kiowa County was confined to broken power poles along US-183 south of Snyder and US-62 just southeast of Snyder and to trees.

Tornado in ROGER MILLS, OKLAHOMA
From 16-MAY-15 15:49:00 to 16-MAY-15 15:55:00 (CST-6)
Location: ANGORA
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tornado developed northeast of Strong City near Angora. Roger Mills Emergency Management reports a destroyed travel trailer and equipment barn, and damaged two mobile homes, a few outbuildings and the roof of a house.

Tornado in DEWEY, OKLAHOMA
From 16-MAY-15 16:05:00 to 16-MAY-15 16:05:00 (CST-6)
Location: LEEDEY
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tornado developed north-northeast of Leedey damaging a mobile home, barn and well house.

Thunderstorm Wind in COMANCHE, OKLAHOMA
From 16-MAY-15 19:11:00 to 16-MAY-15 19:11:00 (CST-6)
Location: GERONIMO
Magnitude: 60.00 EG
Reported by: Broadcast Media

Trees downed, though not very large.

Tornado in BECKHAM, OKLAHOMA
From 16-MAY-15 16:47:00 to 16-MAY-15 16:47:00 (CST-6)
Location: ELK CITY
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tornado touched down at an RV park in Elk City, just north of Interstate 40 along state highway 34 overturning at least one RV.

Thunderstorm Wind in MAJOR, OKLAHOMA
From 16-MAY-15 18:00:00 to 16-MAY-15 18:00:00 (CST-6)
Location: CLEO SPRINGS
Magnitude: 70.00 EG
Reported by: Trained Spotter

Car was flipped over. Roof from office building was damaged.

Thunderstorm Wind in COMANCHE, OKLAHOMA
From 16-MAY-15 18:20:00 to 16-MAY-15 18:20:00 (CST-6)
Location: MT SCOTT
Magnitude: 51.00 MG
Reported by: Mesonet

No damage reported.

Thunderstorm Wind in ALFALFA, OKLAHOMA
From 16-MAY-15 18:20:00 to 16-MAY-15 18:20:00 (CST-6)
Location: GREAT SALT PLAINS LAKE DAM
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees damaged south and east of Great Salt Plains lake. Time estimated from radar.

Thunderstorm Wind in COMANCHE, OKLAHOMA
From 16-MAY-15 18:46:00 to 16-MAY-15 18:46:00 (CST-6)
Location: LAKE ELLSWORTH DAM
Magnitude: 56.00 EG
Reported by: Emergency Manager

Reported on highway 62. No damage reported.

Thunderstorm Wind in COMANCHE, OKLAHOMA
From 16-MAY-15 19:08:00 to 16-MAY-15 19:08:00 (CST-6)
Location: LAWTON
Magnitude: 61.00 MG
Reported by: Amateur Radio

No damage reported.

Thunderstorm Wind in NOBLE, OKLAHOMA
From 16-MAY-15 19:50:00 to 16-MAY-15 19:50:00 (CST-6)
Location: BILLINGS
Magnitude: 52.00 EG
Reported by: Public

Time estimated from radar. No damage reported.

Tornado in ALFALFA, OKLAHOMA
From 16-MAY-15 17:42:00 to 16-MAY-15 17:45:00 (CST-6)
Location: ALINE
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado moved into Alfalfa County from Major county and moved east-northeast. An outbuilding was destroyed about 5 miles east-southeast of Aline near the end of the tornado path.

Thunderstorm Wind in DEWEY, OKLAHOMA
From 16-MAY-15 16:30:00 to 16-MAY-15 16:30:00 (CST-6)
Location: LEEDEY
Magnitude: 65.00 EG
Reported by: Law Enforcement

Mobile home blown over and others damaged.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 16-MAY-15 20:13:00 to 16-MAY-15 20:13:00 (CST-6)
Location: (TIK)TINKER AFB
Magnitude: 71.00 MG
Reported by: ASOS

No damage reported.

Tornado in MAJOR, OKLAHOMA
From 16-MAY-15 17:22:00 to 16-MAY-15 17:42:00 (CST-6)
Location: FAIRVIEW
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado developed northwest of Fairview and moved northeast, brushing the northwest corner of Cleo Springs, and moved into Alfalfa County 1.5 miles east of state highway 8. A house northwest of Fairview was moved off of the foundation (DI 2, DOD 5, est. winds 105-110 mph.) Northeast along the tornado path, damage was observed to trees, outbuildings and utility poles as it approached and passed near the northwest corner of Cleo Springs. North and northeast of Cleo Springs, a mobile home was damaged. The storm moved northeast and overturned a truck as it moved into Alfalfa County to the east of state highway 8.

Tornado in COMANCHE, OKLAHOMA
From 16-MAY-15 18:14:00 to 16-MAY-15 18:24:00 (CST-6)
Location: MEERS
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tornado was observed southwest of Meers in the Wichita Mountains National Wildlife Refuge. The tornado moved northeast passing just west of Meers and dissipating approximately 1.5 miles north of Meers.

Thunderstorm Wind in COMANCHE, OKLAHOMA
From 16-MAY-15 18:23:00 to 16-MAY-15 18:32:00 (CST-6)
Location: MEERS
Magnitude: 85.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A swath of wind damage occurred associated with the rear-flank downdraft of the storm that produced the tornado near Meers. A barn was destroyed about 2 miles east of Meers, and damage to homes and trees was observed along Shroyer Road to the northeast.

Tornado in CADDO, OKLAHOMA
From 16-MAY-15 18:55:00 to 16-MAY-15 18:58:00 (CST-6)
Location: CYRIL
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Storm spotters and chasers observed a tornado develop northwest of Cyril and move northeast for about 2 miles. Only tree damage was noted along the path. The path is estimated.

Thunderstorm Wind in CLEVELAND, OKLAHOMA
From 16-MAY-15 20:02:00 to 16-MAY-15 20:02:00 (CST-6)
Location: NORMAN
Magnitude: 52.00 EG
Reported by: Broadcast Media

No damage reported.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 16-MAY-15 20:12:00 to 16-MAY-15 20:12:00 (CST-6)
Location: VALLEY BROOK
Magnitude: 70.00 EG
Reported by: Broadcast Media

Reported on I-240. No damage reported.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 16-MAY-15 20:20:00 to 16-MAY-15 20:20:00 (CST-6)
Location: (TIK)TINKER AFB
Magnitude: 50.00 MG
Reported by: AWOS

No damage reported.

Thunderstorm Wind in STEPHENS, OKLAHOMA
From 16-MAY-15 20:42:00 to 16-MAY-15 20:42:00 (CST-6)
Location: COMANCHE
Magnitude: 75.00 EG
Reported by: Emergency Manager

Thirty inch tree downed and blocking old highway 81.

Thunderstorm Wind in STEPHENS, OKLAHOMA
From 16-MAY-15 20:50:00 to 16-MAY-15 20:50:00 (CST-6)
Location: DUNCAN
Magnitude: 60.00 EG
Reported by: Emergency Manager

Two and a half inch tree downed and blocking a street.

Thunderstorm Wind in MARSHALL, OKLAHOMA
From 16-MAY-15 23:45:00 to 16-MAY-15 23:45:00 (CST-6)
Location: LEBANON
Magnitude: 65.00 EG
Reported by: Public

Trailer was overturned and power lines were downed at Powell.

Tornado in COMANCHE, OKLAHOMA
From 16-MAY-15 18:58:00 to 16-MAY-15 19:08:00 (CST-6)
Location: GERONIMO
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Storm spotters and storm chasers observed a tornado develop southwest of Geronimo and move east-northeast. No structure damage was reported and the path is estimated.

Thunderstorm Wind in ROGER MILLS, OKLAHOMA
From 16-MAY-15 14:51:00 to 16-MAY-15 14:51:00 (CST-6)
Location: SWEETWATER
Magnitude: 56.00 EG
Reported by: Public

No damage reported.

Hail in ROGER MILLS, OKLAHOMA
From 16-MAY-15 15:45:00 to 16-MAY-15 15:45:00 (CST-6)
Location: STRONG CITY
Magnitude: 1.00 
Reported by: Public

Tornado in CADDO, OKLAHOMA
From 16-MAY-15 19:01:00 to 16-MAY-15 19:05:00 (CST-6)
Location: CYRIL
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Storm spotters reported a tornado in Caddo County to the northwest of Cyril and Cement. The path is estimated.

Tornado in TILLMAN, OKLAHOMA
From 16-MAY-15 17:05:00 to 16-MAY-15 17:05:00 (CST-6)
Location: TIPTON
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

As the large tornado moved into western Tillman County, a storm chaser observed an independent small tornado to the west of Tipton and about one-half mile north of state highway 5. This tornado produced no known damage.

Hail in TILLMAN, OKLAHOMA
From 16-MAY-15 17:05:00 to 16-MAY-15 17:05:00 (CST-6)
Location: TIPTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Flash Flood in KIOWA, OKLAHOMA
From 16-MAY-15 18:03:00 to 16-MAY-15 21:03:00 (CST-6)
Location: MOUNTAIN PARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several roads, including Highway 183 closed due to high water. No damage reported.

Flash Flood in STEPHENS, OKLAHOMA
From 16-MAY-15 20:09:00 to 16-MAY-15 23:09:00 (CST-6)
Location: MARLOW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Up to a foot of water running over Highway 81. No damage reported.

Flash Flood in PAYNE, OKLAHOMA
From 16-MAY-15 21:07:00 to 17-MAY-15 00:07:00 (CST-6)
Location: (SWO)STILLWATER AIRPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Several inches of water over the road between North Park Drive and North Start Drive. No damage reported.

Tornado in JACKSON, OKLAHOMA
From 16-MAY-15 16:30:00 to 16-MAY-15 16:38:00 (CST-6)
Location: ELMER
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

This tornado moved into Oklahoma from Wilbarger County Texas and continued to expand as it moved east-northeast across southern Jackson County. Despite the expansion of the tornado to an estimated 1000 yards wide, no significant damage is known to have occurred in this portion of Jackson County. The tornado crossed the Red River back into Wilbarger County before entering Jackson County again at 4:43 pm CST.

Tornado in TILLMAN, OKLAHOMA
From 16-MAY-15 17:02:00 to 16-MAY-15 17:31:00 (CST-6)
Location: TIPTON ARPT
Tornado F-scale: EF2
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado moved out of Jackson County and continued northeast passing into Kiowa County north of Manitou. EF2 damage continued to be observed north of Tipton, but again the tornado moved through sparsely populated farmland across northwestern Tillman County. The tornado width decreased from 1300 yards to 700 yards by the time it moved into Kiowa County.

Thunderstorm Wind in HARMON, OKLAHOMA
From 16-MAY-15 15:51:00 to 16-MAY-15 15:51:00 (CST-6)
Location: HOLLIS
Magnitude: 52.00 EG
Reported by: Law Enforcement

No damage reported.

Thunderstorm Wind in JACKSON, OKLAHOMA
From 16-MAY-15 16:22:00 to 16-MAY-15 16:22:00 (CST-6)
Location: DUKE
Magnitude: 56.00 EG
Reported by: Public

No damage reported.