A strong upper level disturbance moved into the Southern Plains from the west on the 21st. A moist and unstable air mass was in place north of a stationary frontal boundary that extended across southern Oklahoma for much of the day. Several rounds of strong to severe thunderstorms developed north of the front across eastern Oklahoma during the early morning through evening hours as the system approached the area. Damaging wind was the most commonly occurring severe weather event as each round of storms moved east across the area, with large hail and even some flash flooding remaining isolated.

Hail in PUSHMATAHA, OKLAHOMA
From 21-APR-17 19:34:00 to 21-APR-17 19:34:00 (CST-6)
Location: NASHOBA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CREEK, OKLAHOMA
From 21-APR-17 13:55:00 to 21-APR-17 13:55:00 (CST-6)
Location: KELLYVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in ADAIR, OKLAHOMA
From 21-APR-17 17:05:00 to 21-APR-17 17:05:00 (CST-6)
Location: BUNCH
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind uprooted several trees near the cemetery.

Thunderstorm Wind in MUSKOGEE, OKLAHOMA
From 21-APR-17 04:45:00 to 21-APR-17 04:45:00 (CST-6)
Location: WEBBERS FALLS SHEFFI
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A storm chaser estimated thunderstorm wind gusts of 65 mph near the intersection of the Muskogee Turnpike and I-40.

Thunderstorm Wind in MUSKOGEE, OKLAHOMA
From 21-APR-17 04:50:00 to 21-APR-17 04:50:00 (CST-6)
Location: WEBBERS FALLS SHEFFI
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet station near Webbers Falls measured 73 mph thunderstorm wind gusts.

Thunderstorm Wind in SEQUOYAH, OKLAHOMA
From 21-APR-17 05:35:00 to 21-APR-17 05:35:00 (CST-6)
Location: ROLAND
Magnitude: 65.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind damaged the roof of a building, and blew down trees.

Thunderstorm Wind in CREEK, OKLAHOMA
From 21-APR-17 09:48:00 to 21-APR-17 09:48:00 (CST-6)
Location: KELLYVILLE
Magnitude: 56.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind blew down trees and severely damaged a barn.

Thunderstorm Wind in OKFUSKEE, OKLAHOMA
From 21-APR-17 09:50:00 to 21-APR-17 09:50:00 (CST-6)
Location: OKEMAH ARPT
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet station near Okemah measured 64 mph thunderstorm wind gusts.

Thunderstorm Wind in OKMULGEE, OKLAHOMA
From 21-APR-17 10:06:00 to 21-APR-17 10:06:00 (CST-6)
Location: HENRYETTA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Strong thunderstorm wind snapped large tree limbs.

Thunderstorm Wind in OKMULGEE, OKLAHOMA
From 21-APR-17 10:10:00 to 21-APR-17 10:10:00 (CST-6)
Location: HECTOR
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet station west of Hectorville measured 68 mph thunderstorm wind gusts.

Thunderstorm Wind in MCINTOSH, OKLAHOMA
From 21-APR-17 10:20:00 to 21-APR-17 10:20:00 (CST-6)
Location: HICHITA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Strong thunderstorm wind snapped large tree limbs.

Thunderstorm Wind in MCINTOSH, OKLAHOMA
From 21-APR-17 10:34:00 to 21-APR-17 10:34:00 (CST-6)
Location: CHECOTAH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Strong thunderstorm wind snapped large tree limbs.

Thunderstorm Wind in CHEROKEE, OKLAHOMA
From 21-APR-17 10:53:00 to 21-APR-17 10:53:00 (CST-6)
Location: HULBERT
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Strong thunderstorm wind uprooted trees.

Flash Flood in TULSA, OKLAHOMA
From 21-APR-17 10:53:00 to 21-APR-17 13:45:00 (CST-6)
Location: TULSA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The local media reported flooding near E 31st Street and S Yale Avenue, and near E 49th Street and Memorial Drive.

Thunderstorm Wind in SEQUOYAH, OKLAHOMA
From 21-APR-17 11:25:00 to 21-APR-17 11:25:00 (CST-6)
Location: SALLISAW
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Strong thunderstorm wind snapped large tree limbs.

Flash Flood in TULSA, OKLAHOMA
From 21-APR-17 12:20:00 to 21-APR-17 13:45:00 (CST-6)
Location: TULSA R L JONES ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flooding resulted in the closure of W 81st Street S and S Elwood Avenue.

Flash Flood in TULSA, OKLAHOMA
From 21-APR-17 12:20:00 to 21-APR-17 13:45:00 (CST-6)
Location: BIXBY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Portions of  E 131st Street S were flooded and closed between S Mingo Road and S Memorial Drive.

Flash Flood in TULSA, OKLAHOMA
From 21-APR-17 16:42:00 to 21-APR-17 17:42:00 (CST-6)
Location: BROKEN ARROW ARPK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Portions of E 101st Street S were flooded near S Garnett Road.

Flash Flood in CREEK, OKLAHOMA
From 21-APR-17 17:00:00 to 21-APR-17 18:00:00 (CST-6)
Location: SAPULPA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Portions of S Hickory Street between W Taft Avenue and W Teel Road were closed due to flooding.

Thunderstorm Wind in CHOCTAW, OKLAHOMA
From 21-APR-17 20:41:00 to 21-APR-17 20:41:00 (CST-6)
Location: FT TOWSON
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down power lines.