As the slow moving upper trough continued eastward, it moved into portions of western Kansas and Oklahoma. A Pacific front/dryline surged eastward during the day, igniting thunderstorms. Given impressive upper level winds, and moderate instability, reports of large hail and damaging winds were widespread and lasted into the night.

Hail in HARPER, OKLAHOMA
From 18-APR-15 13:35:00 to 18-APR-15 13:35:00 (CST-6)
Location: BUFFALO
Magnitude: 1.50 
Reported by: Public

No damage reported.

Hail in HARPER, OKLAHOMA
From 18-APR-15 13:40:00 to 18-APR-15 13:40:00 (CST-6)
Location: BUFFALO
Magnitude: 1.00 
Reported by: Emergency Manager

Relayed to EM by city sheriff's office.

Hail in COMANCHE, OKLAHOMA
From 18-APR-15 16:56:00 to 18-APR-15 16:56:00 (CST-6)
Location: WICHITA MTNS NWR HQ
Magnitude: 2.75 
Reported by: Trained Spotter

No damage reported.

Hail in KIOWA, OKLAHOMA
From 18-APR-15 17:05:00 to 18-APR-15 17:05:00 (CST-6)
Location: COOPERTON
Magnitude: 1.75 
Reported by: Emergency Manager

No damage reported.

Hail in WASHITA, OKLAHOMA
From 18-APR-15 18:14:00 to 18-APR-15 18:14:00 (CST-6)
Location: CORDELL
Magnitude: 1.00 
Reported by: Fire Department/Rescue

Hail in WASHITA, OKLAHOMA
From 18-APR-15 18:16:00 to 18-APR-15 18:16:00 (CST-6)
Location: CORDELL
Magnitude: 1.25 
Reported by: Trained Spotter

Hail in WASHITA, OKLAHOMA
From 18-APR-15 18:19:00 to 18-APR-15 18:19:00 (CST-6)
Location: CORDELL
Magnitude: 1.75 
Reported by: Fire Department/Rescue

No damage reported.

Hail in GRANT, OKLAHOMA
From 18-APR-15 17:05:00 to 18-APR-15 17:05:00 (CST-6)
Location: WAKITA
Magnitude: 1.50 
Reported by: Storm Chaser

Hail in GRADY, OKLAHOMA
From 18-APR-15 17:30:00 to 18-APR-15 17:30:00 (CST-6)
Location: MIDDLEBERG
Magnitude: 1.00 
Reported by: Storm Chaser

Hail in KIOWA, OKLAHOMA
From 18-APR-15 17:32:00 to 18-APR-15 17:32:00 (CST-6)
Location: ROOSEVELT
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in GRADY, OKLAHOMA
From 18-APR-15 17:40:00 to 18-APR-15 17:40:00 (CST-6)
Location: BRIDGE CREEK
Magnitude: 61.00 EG
Reported by: Storm Chaser

No damage reported.

Hail in KIOWA, OKLAHOMA
From 18-APR-15 17:43:00 to 18-APR-15 17:43:00 (CST-6)
Location: GOTEBO
Magnitude: 1.25 
Reported by: Trained Spotter

Hail in WASHITA, OKLAHOMA
From 18-APR-15 18:20:00 to 18-APR-15 18:20:00 (CST-6)
Location: CORDELL
Magnitude: 2.50 
Reported by: Public

No damage reported.

Hail in CARTER, OKLAHOMA
From 18-APR-15 18:25:00 to 18-APR-15 18:25:00 (CST-6)
Location: WILSON
Magnitude: 1.25 
Reported by: Public

Hail in CADDO, OKLAHOMA
From 18-APR-15 18:26:00 to 18-APR-15 18:26:00 (CST-6)
Location: HYDRO
Magnitude: 1.75 
Reported by: Public

No damage reported.

Hail in BECKHAM, OKLAHOMA
From 18-APR-15 18:36:00 to 18-APR-15 18:36:00 (CST-6)
Location: NEW LIBERTY
Magnitude: 1.75 
Reported by: Public

No damage reported.

Thunderstorm Wind in POTTAWATOMIE, OKLAHOMA
From 18-APR-15 18:50:00 to 18-APR-15 18:50:00 (CST-6)
Location: SHAWNEE
Magnitude: 50.00 MG
Reported by: Storm Chaser

Measured with hand held instrument near Firelake casino. No damage reported.

Hail in TILLMAN, OKLAHOMA
From 18-APR-15 13:57:00 to 18-APR-15 13:57:00 (CST-6)
Location: GRANDFIELD
Magnitude: 2.00 
Reported by: Storm Chaser

No damage reported.

Hail in CADDO, OKLAHOMA
From 18-APR-15 14:11:00 to 18-APR-15 14:11:00 (CST-6)
Location: LOOKEBA
Magnitude: 1.00 
Reported by: Broadcast Media

No damage reported.

Hail in BLAINE, OKLAHOMA
From 18-APR-15 14:45:00 to 18-APR-15 14:45:00 (CST-6)
Location: GREENFIELD
Magnitude: 1.00 
Reported by: Storm Chaser

Hail in TILLMAN, OKLAHOMA
From 18-APR-15 16:06:00 to 18-APR-15 16:06:00 (CST-6)
Location: FREDERICK
Magnitude: 1.25 
Reported by: Amateur Radio

Thunderstorm Wind in BECKHAM, OKLAHOMA
From 18-APR-15 16:16:00 to 18-APR-15 16:16:00 (CST-6)
Location: SAYRE
Magnitude: 52.00 EG
Reported by: Storm Chaser

No damage reported.

Hail in TILLMAN, OKLAHOMA
From 18-APR-15 16:21:00 to 18-APR-15 16:21:00 (CST-6)
Location: FREDERICK
Magnitude: 1.25 
Reported by: Public

Hail in KIOWA, OKLAHOMA
From 18-APR-15 16:51:00 to 18-APR-15 16:51:00 (CST-6)
Location: COLD SPRINGS
Magnitude: 2.75 
Reported by: Trained Spotter

Spotters estimated golf ball to baseball sized hail. No damage reported.

Hail in KIOWA, OKLAHOMA
From 18-APR-15 17:46:00 to 18-APR-15 17:46:00 (CST-6)
Location: ROOSEVELT
Magnitude: 1.00 
Reported by: Public

Hail in CARTER, OKLAHOMA
From 18-APR-15 17:50:00 to 18-APR-15 17:50:00 (CST-6)
Location: HEALDTON
Magnitude: 1.75 
Reported by: Public

No damage reported.

Hail in JACKSON, OKLAHOMA
From 18-APR-15 17:51:00 to 18-APR-15 17:51:00 (CST-6)
Location: WARREN
Magnitude: 1.75 
Reported by: Trained Spotter

No damage reported.

Hail in MCCLAIN, OKLAHOMA
From 18-APR-15 17:53:00 to 18-APR-15 17:53:00 (CST-6)
Location: BLANCHARD
Magnitude: 0.88 
Reported by: Trained Spotter

Hail in WASHITA, OKLAHOMA
From 18-APR-15 18:03:00 to 18-APR-15 18:03:00 (CST-6)
Location: COLONY
Magnitude: 1.50 
Reported by: Other Federal Agency

Hail in WASHITA, OKLAHOMA
From 18-APR-15 18:05:00 to 18-APR-15 18:05:00 (CST-6)
Location: ROCKY
Magnitude: 1.75 
Reported by: Public

No damage reported.

Hail in BECKHAM, OKLAHOMA
From 18-APR-15 19:21:00 to 18-APR-15 19:21:00 (CST-6)
Location: ELK CITY
Magnitude: 1.75 
Reported by: Fire Department/Rescue

Reported from state highway 34. No damage reported.

Hail in BECKHAM, OKLAHOMA
From 18-APR-15 19:43:00 to 18-APR-15 19:43:00 (CST-6)
Location: ELK CITY
Magnitude: 1.00 
Reported by: Trained Spotter

Tornado in WOODS, OKLAHOMA
From 18-APR-15 15:06:00 to 18-APR-15 15:06:00 (CST-6)
Location: DACOMA
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Video of a brief tornado was captured by a KOCO-TV storm chaser and by a local resident. The tornado caused snapped trees and damaged a metal barn at a ranch south of Dacoma.

Hail in WOODS, OKLAHOMA
From 18-APR-15 18:09:00 to 18-APR-15 18:09:00 (CST-6)
Location: WAYNOKA
Magnitude: 1.25 
Reported by: Storm Chaser