A broken line of severe thunderstorms developed across northeastern Oklahoma during the late afternoon hours of the 28th, as a cold front moved into the area. The line of thunderstorms moved southeast across eastern Oklahoma through the evening hours. Very strong instability and strong deep layer shear developed across eastern Oklahoma ahead of the thunderstorms. These conditions promoted the development of supercell thunderstorms within the line, as well as ahead of the line in southeastern Oklahoma. The strongest storms produced hail up to two inches in diameter, damaging wind gusts, and a tornado. Locally heavy rainfall also resulted in some flash flooding.

Hail in CREEK, OKLAHOMA
From 28-APR-20 16:52:00 to 28-APR-20 16:52:00 (CST-6)
Location: SAPULPA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in OSAGE, OKLAHOMA
From 28-APR-20 17:09:00 to 28-APR-20 17:09:00 (CST-6)
Location: SKIATOOK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in TULSA, OKLAHOMA
From 28-APR-20 17:19:00 to 28-APR-20 17:19:00 (CST-6)
Location: SKIATOOK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in TULSA, OKLAHOMA
From 28-APR-20 17:22:00 to 28-APR-20 17:22:00 (CST-6)
Location: OWASSO
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in ROGERS, OKLAHOMA
From 28-APR-20 17:24:00 to 28-APR-20 17:24:00 (CST-6)
Location: VERDIGRIS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in TULSA, OKLAHOMA
From 28-APR-20 17:25:00 to 28-APR-20 17:25:00 (CST-6)
Location: COLLINSVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in TULSA, OKLAHOMA
From 28-APR-20 17:32:00 to 28-APR-20 17:32:00 (CST-6)
Location: TULSA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in TULSA, OKLAHOMA
From 28-APR-20 17:35:00 to 28-APR-20 17:35:00 (CST-6)
Location: TULSA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in TULSA, OKLAHOMA
From 28-APR-20 17:41:00 to 28-APR-20 17:41:00 (CST-6)
Location: TULSA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in TULSA, OKLAHOMA
From 28-APR-20 17:46:00 to 28-APR-20 17:46:00 (CST-6)
Location: ALSUMA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in WAGONER, OKLAHOMA
From 28-APR-20 17:52:00 to 28-APR-20 17:52:00 (CST-6)
Location: BROKEN ARROW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in WAGONER, OKLAHOMA
From 28-APR-20 17:55:00 to 28-APR-20 17:55:00 (CST-6)
Location: BROKEN ARROW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WAGONER, OKLAHOMA
From 28-APR-20 17:56:00 to 28-APR-20 17:56:00 (CST-6)
Location: BROKEN ARROW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CREEK, OKLAHOMA
From 28-APR-20 18:03:00 to 28-APR-20 18:03:00 (CST-6)
Location: KIEFER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in OKMULGEE, OKLAHOMA
From 28-APR-20 18:20:00 to 28-APR-20 18:20:00 (CST-6)
Location: HECTOR
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in OKFUSKEE, OKLAHOMA
From 28-APR-20 18:22:00 to 28-APR-20 18:22:00 (CST-6)
Location: WELTY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in OKMULGEE, OKLAHOMA
From 28-APR-20 18:30:00 to 28-APR-20 18:30:00 (CST-6)
Location: OKMULGEE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in PITTSBURG, OKLAHOMA
From 28-APR-20 18:47:00 to 28-APR-20 18:47:00 (CST-6)
Location: MC ALESTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in PITTSBURG, OKLAHOMA
From 28-APR-20 19:54:00 to 28-APR-20 19:54:00 (CST-6)
Location: MC ALESTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in PITTSBURG, OKLAHOMA
From 28-APR-20 19:59:00 to 28-APR-20 19:59:00 (CST-6)
Location: BLANCO
Magnitude: 1.75 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Golfball size hail damaged vehicles and the roofs of homes.

Hail in PITTSBURG, OKLAHOMA
From 28-APR-20 18:52:00 to 28-APR-20 18:52:00 (CST-6)
Location: HAILEYVILLE
Magnitude: 1.75 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Golfball size hail damaged vehicles and the roofs of homes.

Hail in PITTSBURG, OKLAHOMA
From 28-APR-20 18:50:00 to 28-APR-20 18:50:00 (CST-6)
Location: DOW
Magnitude: 2.25 
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Large hail damaged vehicles and the roofs of homes.

Tornado in PUSHMATAHA, OKLAHOMA
From 28-APR-20 20:02:00 to 28-APR-20 20:19:00 (CST-6)
Location: SARDIS
Tornado F-scale: EF1
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado developed over the hilly terrain south of Sardis Lake. It uprooted trees and blew down power poles as it crossed the E 1660 Road, and then Highway 43, south of the lake. The tornado moved across the eastern portion of the lake, and came back onto land near the E 1625 Road, where trees were uprooted and large tree limbs were snapped. The tornado crossed Highway 2, where trees were uprooted, and then dissipated just south of the Latimer County line.  Based on this damage, maximum estimated wind in the tornado was 90 to 100 mph.

Hail in WASHINGTON, OKLAHOMA
From 28-APR-20 16:30:00 to 28-APR-20 16:30:00 (CST-6)
Location: DEWEY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHINGTON, OKLAHOMA
From 28-APR-20 16:30:00 to 28-APR-20 16:30:00 (CST-6)
Location: OCHELATA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in NOWATA, OKLAHOMA
From 28-APR-20 16:41:00 to 28-APR-20 16:41:00 (CST-6)
Location: NOWATA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OSAGE, OKLAHOMA
From 28-APR-20 16:13:00 to 28-APR-20 16:13:00 (CST-6)
Location: OKESA
Magnitude: 1.75 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Golfball size hail damaged vehicles and the roofs of homes.

Thunderstorm Wind in OSAGE, OKLAHOMA
From 28-APR-20 16:27:00 to 28-APR-20 16:27:00 (CST-6)
Location: BARNSDALL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm wind gusts were estimated to 60 mph.

Thunderstorm Wind in WASHINGTON, OKLAHOMA
From 28-APR-20 16:30:00 to 28-APR-20 16:30:00 (CST-6)
Location: DEWEY
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm wind gusts were estimated to 70 mph.

Thunderstorm Wind in WASHINGTON, OKLAHOMA
From 28-APR-20 16:39:00 to 28-APR-20 16:39:00 (CST-6)
Location: RAMONA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm wind gusts were estimated to 60 mph.

Hail in OSAGE, OKLAHOMA
From 28-APR-20 17:05:00 to 28-APR-20 17:05:00 (CST-6)
Location: SKIATOOK
Magnitude: 1.25 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Employee

Half dollar size hail damaged vehicles and the roofs of homes.

Hail in OTTAWA, OKLAHOMA
From 28-APR-20 17:07:00 to 28-APR-20 17:07:00 (CST-6)
Location: QUAPAW
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Golfball size hail damaged vehicles and the roofs of homes.

Hail in OSAGE, OKLAHOMA
From 28-APR-20 17:14:00 to 28-APR-20 17:14:00 (CST-6)
Location: SKIATOOK
Magnitude: 1.25 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

Half dollar size hail damaged vehicles and the roofs of homes.

Thunderstorm Wind in OSAGE, OKLAHOMA
From 28-APR-20 17:15:00 to 28-APR-20 17:15:00 (CST-6)
Location: PRUE
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Strong thunderstorm wind damaged a barn near Prue.

Thunderstorm Wind in TULSA, OKLAHOMA
From 28-APR-20 17:16:00 to 28-APR-20 17:16:00 (CST-6)
Location: SAND SPGS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm wind gusts were estimated to 60 mph.

Thunderstorm Wind in TULSA, OKLAHOMA
From 28-APR-20 17:16:00 to 28-APR-20 17:16:00 (CST-6)
Location: TULSA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm wind gusts were estimated to 60 mph.

Thunderstorm Wind in MAYES, OKLAHOMA
From 28-APR-20 17:23:00 to 28-APR-20 17:23:00 (CST-6)
Location: GREEN
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down a large tree.

Hail in TULSA, OKLAHOMA
From 28-APR-20 17:34:00 to 28-APR-20 17:34:00 (CST-6)
Location: GARDEN CITY
Magnitude: 1.25 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Public

Half dollar size hail damaged vehicles and the roofs of homes.

Thunderstorm Wind in MAYES, OKLAHOMA
From 28-APR-20 17:39:00 to 28-APR-20 17:39:00 (CST-6)
Location: CHOUTEAU
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong thunderstorm wind snapped large tree limbs.

Thunderstorm Wind in CHEROKEE, OKLAHOMA
From 28-APR-20 17:56:00 to 28-APR-20 17:56:00 (CST-6)
Location: PEGGS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm wind gusts were estimated to 60 mph.

Thunderstorm Wind in DELAWARE, OKLAHOMA
From 28-APR-20 18:12:00 to 28-APR-20 18:12:00 (CST-6)
Location: LEACH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind snapped large tree limbs.

Thunderstorm Wind in TULSA, OKLAHOMA
From 28-APR-20 17:34:00 to 28-APR-20 17:34:00 (CST-6)
Location: ALSUMA
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong thunderstorm wind snapped large tree limbs.

Thunderstorm Wind in CHEROKEE, OKLAHOMA
From 28-APR-20 18:36:00 to 28-APR-20 18:36:00 (CST-6)
Location: TAHLEQUAH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm wind gusts were estimated to 60 mph.

Hail in PITTSBURG, OKLAHOMA
From 28-APR-20 18:53:00 to 28-APR-20 18:53:00 (CST-6)
Location: HAILEYVILLE
Magnitude: 2.00 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Large hail damaged vehicles and the roofs of homes.

Hail in PITTSBURG, OKLAHOMA
From 28-APR-20 18:53:00 to 28-APR-20 18:53:00 (CST-6)
Location: BLANCO
Magnitude: 1.75 
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Golfball size hail damaged vehicles and the roofs of homes.

Hail in LATIMER, OKLAHOMA
From 28-APR-20 19:20:00 to 28-APR-20 19:20:00 (CST-6)
Location: WILBURTON ARPT
Magnitude: 1.25 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Half dollar size hail damaged vehicles and the roofs of homes.

Thunderstorm Wind in PUSHMATAHA, OKLAHOMA
From 28-APR-20 20:25:00 to 28-APR-20 20:25:00 (CST-6)
Location: JUMBO
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind damaged the roof of a home and blew over a camper north of Jumbo.

Thunderstorm Wind in PUSHMATAHA, OKLAHOMA
From 28-APR-20 20:25:00 to 28-APR-20 20:25:00 (CST-6)
Location: TUSKAHOMA
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous large trees were uprooted near the Choctaw Nation Council House.

Hail in PITTSBURG, OKLAHOMA
From 28-APR-20 19:29:00 to 28-APR-20 19:29:00 (CST-6)
Location: BLANCO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in LE FLORE, OKLAHOMA
From 28-APR-20 20:55:00 to 28-APR-20 20:55:00 (CST-6)
Location: WHITESBORO
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong thunderstorm wind blew down power lines and snapped large tree limbs.

Thunderstorm Wind in NOWATA, OKLAHOMA
From 28-APR-20 16:20:00 to 28-APR-20 16:20:00 (CST-6)
Location: LENAPAH
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down a tree onto a car, injuring its occupant.

Flash Flood in WASHINGTON, OKLAHOMA
From 28-APR-20 16:49:00 to 28-APR-20 20:00:00 (CST-6)
Location: BARTLESVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Portions of SE Adams Boulevard were flooded and closed in town.

Flash Flood in TULSA, OKLAHOMA
From 28-APR-20 18:02:00 to 28-APR-20 21:00:00 (CST-6)
Location: ALSUMA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A car was driven into flood waters at E 41st Street and S Sheridan Road, where it stalled out.