Storms formed during the afternoon of the 11th in the vicinity of an eastward moving cold front and dryline.

Hail in KINGFISHER, OKLAHOMA
From 11-MAY-17 12:48:00 to 11-MAY-17 12:48:00 (CST-6)
Location: KINGFISHER
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Flash Flood in KAY, OKLAHOMA
From 11-MAY-17 15:09:00 to 11-MAY-17 18:09:00 (CST-6)
Location: (PNC)PONCA CITY ARPT
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several vehicles were stalled in flood waters.

Flash Flood in NOBLE, OKLAHOMA
From 11-MAY-17 16:00:00 to 11-MAY-17 19:00:00 (CST-6)
Location: CERES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Highway 77 2 miles south of highway 15 closed due to flooding.

Hail in LOGAN, OKLAHOMA
From 11-MAY-17 13:40:00 to 11-MAY-17 13:40:00 (CST-6)
Location: GUTHRIE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LOGAN, OKLAHOMA
From 11-MAY-17 13:45:00 to 11-MAY-17 13:45:00 (CST-6)
Location: LANGSTON
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in LOGAN, OKLAHOMA
From 11-MAY-17 13:50:00 to 11-MAY-17 13:50:00 (CST-6)
Location: COYLE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in LOGAN, OKLAHOMA
From 11-MAY-17 13:51:00 to 11-MAY-17 13:51:00 (CST-6)
Location: LANGSTON
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in LOGAN, OKLAHOMA
From 11-MAY-17 13:53:00 to 11-MAY-17 13:53:00 (CST-6)
Location: COYLE
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in LOGAN, OKLAHOMA
From 11-MAY-17 13:56:00 to 11-MAY-17 13:56:00 (CST-6)
Location: COYLE
Magnitude: 4.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in LOGAN, OKLAHOMA
From 11-MAY-17 13:56:00 to 11-MAY-17 13:56:00 (CST-6)
Location: LANGSTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in LOGAN, OKLAHOMA
From 11-MAY-17 13:56:00 to 11-MAY-17 13:56:00 (CST-6)
Location: COYLE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

No damage reported.

Hail in LOGAN, OKLAHOMA
From 11-MAY-17 14:06:00 to 11-MAY-17 14:06:00 (CST-6)
Location: MERIDIAN
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Thunderstorm Wind in PAYNE, OKLAHOMA
From 11-MAY-17 14:13:00 to 11-MAY-17 14:13:00 (CST-6)
Location: LAKE CARL BLACKWELL DAM
Magnitude: 68.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in BLAINE, OKLAHOMA
From 11-MAY-17 14:50:00 to 11-MAY-17 14:50:00 (CST-6)
Location: CANTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GARFIELD, OKLAHOMA
From 11-MAY-17 13:01:00 to 11-MAY-17 13:01:00 (CST-6)
Location: ENID
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in WOODWARD, OKLAHOMA
From 11-MAY-17 13:10:00 to 11-MAY-17 13:10:00 (CST-6)
Location: MOORELAND
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ROGER MILLS, OKLAHOMA
From 11-MAY-17 13:15:00 to 11-MAY-17 13:15:00 (CST-6)
Location: STRONG CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LOGAN, OKLAHOMA
From 11-MAY-17 13:25:00 to 11-MAY-17 13:25:00 (CST-6)
Location: CRESCENT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in LOGAN, OKLAHOMA
From 11-MAY-17 13:25:00 to 11-MAY-17 13:25:00 (CST-6)
Location: LOVELL
Magnitude: 66.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in LOGAN, OKLAHOMA
From 11-MAY-17 13:38:00 to 11-MAY-17 13:38:00 (CST-6)
Location: GUTHRIE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Flash Flood in NOBLE, OKLAHOMA
From 11-MAY-17 16:12:00 to 11-MAY-17 19:12:00 (CST-6)
Location: RED ROCK
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

County emergency manager reported state highway 15 was closed due to flash flooding between county road 140 and county road 150. Two people were rescued when their car  stalled in the water.

Tornado in PAYNE, OKLAHOMA
From 11-MAY-17 14:13:00 to 11-MAY-17 14:13:00 (CST-6)
Location: PERKINS
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Storm spotters and chasers observed a brief tornado just southwest of Perkins. No damage was reported from this tornado.

Flash Flood in NOBLE, OKLAHOMA
From 11-MAY-17 14:56:00 to 11-MAY-17 17:56:00 (CST-6)
Location: CERES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Flood waters flowing over roadways in several locations.