Storms initiated along a warm front amid strong instability and enough shear for multiple storms producing very large hail up to the size of baseballs and a few brief tornadoes on the evening of the 21st.

Hail in CARTER, OKLAHOMA
From 21-APR-20 23:33:00 to 21-APR-20 23:33:00 (CST-6)
Location: RATLIFF CITY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in MURRAY, OKLAHOMA
From 21-APR-20 23:55:00 to 21-APR-20 23:55:00 (CST-6)
Location: TURNER FALLS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in CARTER, OKLAHOMA
From 22-APR-20 00:12:00 to 22-APR-20 00:12:00 (CST-6)
Location: (ADM)ARDMORE APT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in STEPHENS, OKLAHOMA
From 22-APR-20 00:20:00 to 22-APR-20 00:20:00 (CST-6)
Location: DUNCAN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in JOHNSTON, OKLAHOMA
From 22-APR-20 00:30:00 to 22-APR-20 00:30:00 (CST-6)
Location: TROY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in JOHNSTON, OKLAHOMA
From 22-APR-20 00:48:00 to 22-APR-20 00:48:00 (CST-6)
Location: MILBURN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in JOHNSTON, OKLAHOMA
From 22-APR-20 01:02:00 to 22-APR-20 01:02:00 (CST-6)
Location: FILLMORE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in CARTER, OKLAHOMA
From 22-APR-20 01:12:00 to 22-APR-20 01:12:00 (CST-6)
Location: HEALDTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Also had a 45 mph wind gusts reported.

Hail in BRYAN, OKLAHOMA
From 22-APR-20 01:20:00 to 22-APR-20 01:20:00 (CST-6)
Location: CADDO
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in CARTER, OKLAHOMA
From 22-APR-20 01:35:00 to 22-APR-20 01:35:00 (CST-6)
Location: LONE GROVE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in ATOKA, OKLAHOMA
From 22-APR-20 01:50:00 to 22-APR-20 01:50:00 (CST-6)
Location: BOGGY DEPOT STATE PARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in ELLIS, OKLAHOMA
From 22-APR-20 03:38:00 to 22-APR-20 03:38:00 (CST-6)
Location: SHATTUCK
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Mostly quarter sized hail with a few golf ball sized hailstones.

Hail in GARFIELD, OKLAHOMA
From 22-APR-20 04:33:00 to 22-APR-20 04:33:00 (CST-6)
Location: ENID
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in GARFIELD, OKLAHOMA
From 22-APR-20 04:35:00 to 22-APR-20 04:35:00 (CST-6)
Location: (END)VANCE AFB ENID
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

From the Vance Airforce base weather observer via the KEND METAR.

Thunderstorm Wind in WASHITA, OKLAHOMA
From 21-APR-20 20:16:00 to 21-APR-20 20:16:00 (CST-6)
Location: (CSM)CLINTON SHERMAN AIRPORT
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in WASHITA, OKLAHOMA
From 21-APR-20 20:24:00 to 21-APR-20 20:24:00 (CST-6)
Location: (CSM)CLINTON SHERMAN AIRPORT
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in WASHITA, OKLAHOMA
From 21-APR-20 20:59:00 to 21-APR-20 20:59:00 (CST-6)
Location: (CSM)CLINTON SHERMAN AIRPORT
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in KIOWA, OKLAHOMA
From 21-APR-20 21:57:00 to 21-APR-20 21:57:00 (CST-6)
Location: (HBR)HOBART AIRPORT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in GRADY, OKLAHOMA
From 21-APR-20 22:00:00 to 21-APR-20 22:00:00 (CST-6)
Location: AMBER
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Estimated gusts reported by spotter.

Thunderstorm Wind in COMANCHE, OKLAHOMA
From 21-APR-20 22:12:00 to 21-APR-20 22:12:00 (CST-6)
Location: ELGIN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Estimated gust reported by spotter.

Thunderstorm Wind in STEPHENS, OKLAHOMA
From 21-APR-20 23:10:00 to 21-APR-20 23:10:00 (CST-6)
Location: LAKE FUQUA  DAM
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in JOHNSTON, OKLAHOMA
From 22-APR-20 01:20:00 to 22-APR-20 01:20:00 (CST-6)
Location: TISHOMINGO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Transformer was damaged and power out in Tishomingo.

Thunderstorm Wind in CARTER, OKLAHOMA
From 22-APR-20 01:35:00 to 22-APR-20 01:35:00 (CST-6)
Location: LONE GROVE
Magnitude: 70.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Tornado in GRADY, OKLAHOMA
From 21-APR-20 22:29:00 to 21-APR-20 22:30:00 (CST-6)
Location: ACME
Tornado F-scale: EF1
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

This tornado moved east from Comanche County into Grady County. Immediately upon moving into Grady County, a mobile home was struck and heavily damaged on the east side of County Road 2750 (which is the county line). No other damage is known to have occurred.

Tornado in STEPHENS, OKLAHOMA
From 21-APR-20 22:43:00 to 21-APR-20 22:46:00 (CST-6)
Location: MARLOW
Tornado F-scale: EF1
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tornado developed just northwest of the city limits of Marlow and moved east-southeast into far northern portions of the city of Marlow. Near the beginning of the tornado, numerous buildings on a farm on the north side of Ballpark Road were heavily damaged, including most of the roof off of a home and an outbuilding. The tornado moved east-southeast breaking large trees and utility poles along Ballpark Road. A number of trees were damaged at the Marlow cemetery on the northeast side of Marlow.

Hail in CADDO, OKLAHOMA
From 21-APR-20 18:42:00 to 21-APR-20 18:42:00 (CST-6)
Location: ANADARKO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BECKHAM, OKLAHOMA
From 21-APR-20 18:50:00 to 21-APR-20 18:50:00 (CST-6)
Location: NEW LIBERTY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in ROGER MILLS, OKLAHOMA
From 21-APR-20 19:02:00 to 21-APR-20 19:02:00 (CST-6)
Location: REYDON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in BECKHAM, OKLAHOMA
From 21-APR-20 19:15:00 to 21-APR-20 19:15:00 (CST-6)
Location: ELK CITY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ROGER MILLS, OKLAHOMA
From 21-APR-20 19:18:00 to 21-APR-20 19:18:00 (CST-6)
Location: ROLL
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in ROGER MILLS, OKLAHOMA
From 21-APR-20 19:30:00 to 21-APR-20 19:30:00 (CST-6)
Location: REYDON
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in BECKHAM, OKLAHOMA
From 21-APR-20 19:34:00 to 21-APR-20 19:34:00 (CST-6)
Location: ELK CITY
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BECKHAM, OKLAHOMA
From 21-APR-20 19:35:00 to 21-APR-20 19:35:00 (CST-6)
Location: ELK CITY
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in JOHNSTON, OKLAHOMA
From 22-APR-20 01:00:00 to 22-APR-20 01:00:00 (CST-6)
Location: MILBURN
Magnitude: 2.00 
Property damage: 1000.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Extensive damage reported to Milburn School, along with vehicle and home damage between Milburn and Tishimingo.

Hail in BECKHAM, OKLAHOMA
From 21-APR-20 20:05:00 to 21-APR-20 20:05:00 (CST-6)
Location: ELK CITY
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHITA, OKLAHOMA
From 21-APR-20 20:05:00 to 21-APR-20 20:05:00 (CST-6)
Location: CANUTE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CADDO, OKLAHOMA
From 21-APR-20 20:06:00 to 21-APR-20 20:06:00 (CST-6)
Location: LOOKEBA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CADDO, OKLAHOMA
From 21-APR-20 20:31:00 to 21-APR-20 20:31:00 (CST-6)
Location: LOOKEBA
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHITA, OKLAHOMA
From 21-APR-20 20:36:00 to 21-APR-20 20:36:00 (CST-6)
Location: DILL CITY
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in BECKHAM, OKLAHOMA
From 21-APR-20 20:39:00 to 21-APR-20 20:39:00 (CST-6)
Location: SAYRE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in BECKHAM, OKLAHOMA
From 21-APR-20 20:40:00 to 21-APR-20 20:40:00 (CST-6)
Location: SAYRE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BECKHAM, OKLAHOMA
From 21-APR-20 20:49:00 to 21-APR-20 20:49:00 (CST-6)
Location: SAYRE
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in WASHITA, OKLAHOMA
From 21-APR-20 21:00:00 to 21-APR-20 21:00:00 (CST-6)
Location: CLOUD CHIEF
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Time estimate from radar.

Hail in WASHITA, OKLAHOMA
From 21-APR-20 21:08:00 to 21-APR-20 21:08:00 (CST-6)
Location: CLOUD CHIEF
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GRADY, OKLAHOMA
From 21-APR-20 21:32:00 to 21-APR-20 21:32:00 (CST-6)
Location: POCASSET
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in GRADY, OKLAHOMA
From 21-APR-20 21:33:00 to 21-APR-20 21:33:00 (CST-6)
Location: MINCO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in KIOWA, OKLAHOMA
From 21-APR-20 21:44:00 to 21-APR-20 21:44:00 (CST-6)
Location: HOBART
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GRADY, OKLAHOMA
From 21-APR-20 21:47:00 to 21-APR-20 21:47:00 (CST-6)
Location: POCASSET
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GRADY, OKLAHOMA
From 21-APR-20 21:47:00 to 21-APR-20 21:47:00 (CST-6)
Location: AMBER
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in COMANCHE, OKLAHOMA
From 21-APR-20 22:11:00 to 21-APR-20 22:11:00 (CST-6)
Location: ELGIN
Magnitude: 3.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in COMANCHE, OKLAHOMA
From 21-APR-20 22:15:00 to 21-APR-20 22:15:00 (CST-6)
Location: ELGIN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in COMANCHE, OKLAHOMA
From 21-APR-20 22:19:00 to 21-APR-20 22:19:00 (CST-6)
Location: STERLING
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in KIOWA, OKLAHOMA
From 21-APR-20 22:22:00 to 21-APR-20 22:22:00 (CST-6)
Location: COOPERTON
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in COMANCHE, OKLAHOMA
From 21-APR-20 22:25:00 to 21-APR-20 22:25:00 (CST-6)
Location: STERLING
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in COTTON, OKLAHOMA
From 21-APR-20 22:45:00 to 21-APR-20 22:45:00 (CST-6)
Location: DEVOL
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in COMANCHE, OKLAHOMA
From 21-APR-20 22:47:00 to 21-APR-20 22:47:00 (CST-6)
Location: MEERS
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in COTTON, OKLAHOMA
From 21-APR-20 22:57:00 to 21-APR-20 22:57:00 (CST-6)
Location: WALTERS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in COMANCHE, OKLAHOMA
From 21-APR-20 23:04:00 to 21-APR-20 23:04:00 (CST-6)
Location: PUMPKIN CENTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in COMANCHE, OKLAHOMA
From 21-APR-20 23:10:00 to 21-APR-20 23:10:00 (CST-6)
Location: MEDICINE PARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in STEPHENS, OKLAHOMA
From 21-APR-20 23:15:00 to 21-APR-20 23:15:00 (CST-6)
Location: DUNCAN
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in STEPHENS, OKLAHOMA
From 21-APR-20 23:17:00 to 21-APR-20 23:17:00 (CST-6)
Location: DUNCAN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in STEPHENS, OKLAHOMA
From 21-APR-20 23:18:00 to 21-APR-20 23:18:00 (CST-6)
Location: DUNCAN
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MCCLAIN, OKLAHOMA
From 21-APR-20 23:25:00 to 21-APR-20 23:25:00 (CST-6)
Location: WAYNE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Small metal shed was destroyed and blown through a cow pasture. Time radar estimated.

Tornado in COMANCHE, OKLAHOMA
From 21-APR-20 22:28:00 to 21-APR-20 22:29:00 (CST-6)
Location: STERLING
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tornado developed in far eastern Comanche County east of Sterling, just west of the Grady County line. The tornado produced no known damage in Comanche County before moving quickly into Grady County.