On the afternoon of the 22nd, a cold front pushed into the region with deep low level moisture and high atmospheric instability already in place. Severe thunderstorms developed ahead of the front with large hail up to tennis ball size, damaging wind gusts, and five brief tornadoes in eastern Oklahoma.

Hail in ROGERS, OKLAHOMA
From 22-APR-11 14:55:00 to 22-APR-11 14:55:00 (CST-6)
Location: CATOOSA
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OTTAWA, OKLAHOMA
From 22-APR-11 15:10:00 to 22-APR-11 15:10:00 (CST-6)
Location: MIAMI
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OTTAWA, OKLAHOMA
From 22-APR-11 15:12:00 to 22-APR-11 15:12:00 (CST-6)
Location: WYANDOTTE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in OTTAWA, OKLAHOMA
From 22-APR-11 15:15:00 to 22-APR-11 15:15:00 (CST-6)
Location: PEORIA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in ADAIR, OKLAHOMA
From 22-APR-11 15:25:00 to 22-APR-11 15:25:00 (CST-6)
Location: CHEWEY
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Six to eight inch diameter tree limbs were broken by strong thunderstorm winds.

Hail in ROGERS, OKLAHOMA
From 22-APR-11 15:25:00 to 22-APR-11 15:25:00 (CST-6)
Location: TIAWAH
Magnitude: 1.75 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

Hail in CREEK, OKLAHOMA
From 22-APR-11 15:37:00 to 22-APR-11 15:37:00 (CST-6)
Location: SAPULPA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in TULSA, OKLAHOMA
From 22-APR-11 15:45:00 to 22-APR-11 15:45:00 (CST-6)
Location: BROKEN ARROW ARPK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MAYES, OKLAHOMA
From 22-APR-11 15:45:00 to 22-APR-11 15:45:00 (CST-6)
Location: PRYOR
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OTTAWA, OKLAHOMA
From 22-APR-11 15:45:00 to 22-APR-11 15:45:00 (CST-6)
Location: WYANDOTTE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in TULSA, OKLAHOMA
From 22-APR-11 15:47:00 to 22-APR-11 15:47:00 (CST-6)
Location: GLENPOOL
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in TULSA, OKLAHOMA
From 22-APR-11 15:50:00 to 22-APR-11 15:50:00 (CST-6)
Location: BIXBY
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Hail in MAYES, OKLAHOMA
From 22-APR-11 15:50:00 to 22-APR-11 15:50:00 (CST-6)
Location: PRYOR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in TULSA, OKLAHOMA
From 22-APR-11 15:58:00 to 22-APR-11 15:58:00 (CST-6)
Location: BROKEN ARROW
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in TULSA, OKLAHOMA
From 22-APR-11 16:00:00 to 22-APR-11 16:00:00 (CST-6)
Location: JENKS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in TULSA, OKLAHOMA
From 22-APR-11 16:00:00 to 22-APR-11 16:00:00 (CST-6)
Location: BROKEN ARROW ARPK
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in TULSA, OKLAHOMA
From 22-APR-11 16:06:00 to 22-APR-11 16:06:00 (CST-6)
Location: BIXBY
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in TULSA, OKLAHOMA
From 22-APR-11 16:06:00 to 22-APR-11 16:06:00 (CST-6)
Location: BROKEN ARROW
Magnitude: 1.50 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

Hail in TULSA, OKLAHOMA
From 22-APR-11 16:09:00 to 22-APR-11 16:09:00 (CST-6)
Location: JENKS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in TULSA, OKLAHOMA
From 22-APR-11 16:10:00 to 22-APR-11 16:10:00 (CST-6)
Location: BIXBY
Magnitude: 2.50 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in TULSA, OKLAHOMA
From 22-APR-11 16:10:00 to 22-APR-11 16:10:00 (CST-6)
Location: JENKS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in TULSA, OKLAHOMA
From 22-APR-11 16:13:00 to 22-APR-11 16:13:00 (CST-6)
Location: BIXBY
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in MAYES, OKLAHOMA
From 22-APR-11 16:22:00 to 22-APR-11 16:22:00 (CST-6)
Location: SALINA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in WAGONER, OKLAHOMA
From 22-APR-11 16:23:00 to 22-APR-11 16:23:00 (CST-6)
Location: ONETA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WAGONER, OKLAHOMA
From 22-APR-11 16:25:00 to 22-APR-11 16:25:00 (CST-6)
Location: ONETA
Magnitude: 2.00 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in OKFUSKEE, OKLAHOMA
From 22-APR-11 16:40:00 to 22-APR-11 16:40:00 (CST-6)
Location: WELTY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OKMULGEE, OKLAHOMA
From 22-APR-11 16:49:00 to 22-APR-11 16:49:00 (CST-6)
Location: BEGGS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in OKFUSKEE, OKLAHOMA
From 22-APR-11 16:55:00 to 22-APR-11 16:55:00 (CST-6)
Location: MASON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in OKFUSKEE, OKLAHOMA
From 22-APR-11 17:10:00 to 22-APR-11 17:10:00 (CST-6)
Location: WELTY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Numerous large tree limbs were broken by strong thunderstorm winds.

Hail in DELAWARE, OKLAHOMA
From 22-APR-11 17:15:00 to 22-APR-11 17:15:00 (CST-6)
Location: KANSAS
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MUSKOGEE, OKLAHOMA
From 22-APR-11 17:30:00 to 22-APR-11 17:30:00 (CST-6)
Location: HASKELL
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in DELAWARE, OKLAHOMA
From 22-APR-11 17:30:00 to 22-APR-11 17:30:00 (CST-6)
Location: COLCORD
Magnitude: 1.25 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in CHEROKEE, OKLAHOMA
From 22-APR-11 18:45:00 to 22-APR-11 18:45:00 (CST-6)
Location: TAHLEQUAH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MCINTOSH, OKLAHOMA
From 22-APR-11 19:15:00 to 22-APR-11 19:15:00 (CST-6)
Location: CHECOTAH
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in ADAIR, OKLAHOMA
From 22-APR-11 19:25:00 to 22-APR-11 19:25:00 (CST-6)
Location: WESTVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in HASKELL, OKLAHOMA
From 22-APR-11 20:23:00 to 22-APR-11 20:23:00 (CST-6)
Location: WHITEFIELD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm wind gusts to near 60 mph were estimated by the media along with dime size hail.

Thunderstorm Wind in HASKELL, OKLAHOMA
From 22-APR-11 20:24:00 to 22-APR-11 20:24:00 (CST-6)
Location: STIGLER
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet site near Stigler recorded thunderstorm wind gusts up to 71 mph.

Thunderstorm Wind in HASKELL, OKLAHOMA
From 22-APR-11 20:30:00 to 22-APR-11 20:30:00 (CST-6)
Location: STIGLER
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet site near Stigler recorded thunderstorm wind gusts of up to 59 mph.

Thunderstorm Wind in PITTSBURG, OKLAHOMA
From 22-APR-11 22:39:00 to 22-APR-11 22:39:00 (CST-6)
Location: (MLC)MC ALESTER MUNI
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS unit at KMLC measured 70 mph thunderstorm wind gusts.

Hail in LATIMER, OKLAHOMA
From 23-APR-11 02:05:00 to 23-APR-11 02:05:00 (CST-6)
Location: BENGAL
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MAYES, OKLAHOMA
From 23-APR-11 03:25:00 to 23-APR-11 03:25:00 (CST-6)
Location: MAZIE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CHEROKEE, OKLAHOMA
From 23-APR-11 04:15:00 to 23-APR-11 04:15:00 (CST-6)
Location: SCRAPER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in MUSKOGEE, OKLAHOMA
From 23-APR-11 20:42:00 to 23-APR-11 20:42:00 (CST-6)
Location: MUSKOGEE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in ADAIR, OKLAHOMA
From 23-APR-11 21:11:00 to 23-APR-11 21:11:00 (CST-6)
Location: WESTVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in CREEK, OKLAHOMA
From 23-APR-11 21:30:00 to 23-APR-11 21:30:00 (CST-6)
Location: SAPULPA
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in TULSA, OKLAHOMA
From 23-APR-11 21:37:00 to 23-APR-11 21:37:00 (CST-6)
Location: SAND SPGS
Magnitude: 1.75 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in TULSA, OKLAHOMA
From 23-APR-11 21:40:00 to 23-APR-11 21:40:00 (CST-6)
Location: TULSA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in MUSKOGEE, OKLAHOMA
From 23-APR-11 21:41:00 to 23-APR-11 21:41:00 (CST-6)
Location: MUSKOGEE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tornado in OKMULGEE, OKLAHOMA
From 22-APR-11 18:19:00 to 22-APR-11 18:20:00 (CST-6)
Location: BLACKSTONE MINE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A brief tornado developed over open country and produced no known damage.

Hail in TULSA, OKLAHOMA
From 23-APR-11 21:45:00 to 23-APR-11 21:45:00 (CST-6)
Location: TULSA
Magnitude: 1.50 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Hail in TULSA, OKLAHOMA
From 23-APR-11 21:52:00 to 23-APR-11 21:52:00 (CST-6)
Location: TULSA
Magnitude: 2.50 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in ROGERS, OKLAHOMA
From 22-APR-11 15:25:00 to 22-APR-11 15:25:00 (CST-6)
Location: TIAWAH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm wind gusts to near 60 mph were reported.

Tornado in OKFUSKEE, OKLAHOMA
From 22-APR-11 17:03:00 to 22-APR-11 17:04:00 (CST-6)
Location: WELTY
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A large cone tornado was reported over open country. The tornado produced no known damage.

Tornado in CHEROKEE, OKLAHOMA
From 22-APR-11 18:18:00 to 22-APR-11 18:19:00 (CST-6)
Location: MOODYS
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado uprooted a number of trees and was photographed by a storm spotter. Maximum estimated wind in the tornado based on the tree damage was about 95 mph.

Tornado in MCINTOSH, OKLAHOMA
From 22-APR-11 19:14:00 to 22-APR-11 19:14:00 (CST-6)
Location: FAME
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A brief tornado developed over Eufaula Lake.

Hail in ADAIR, OKLAHOMA
From 22-APR-11 19:13:00 to 22-APR-11 19:13:00 (CST-6)
Location: WESTVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tornado in DELAWARE, OKLAHOMA
From 22-APR-11 17:16:00 to 22-APR-11 17:16:00 (CST-6)
Location: KANSAS
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A brief tornado developed in open country. This tornado was witnessed by several different people and produced no known damage.

Hail in CREEK, OKLAHOMA
From 22-APR-11 15:47:00 to 22-APR-11 15:47:00 (CST-6)
Location: BRISTOW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WAGONER, OKLAHOMA
From 22-APR-11 16:24:00 to 22-APR-11 16:24:00 (CST-6)
Location: COWETA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in TULSA, OKLAHOMA
From 22-APR-11 16:05:00 to 22-APR-11 16:05:00 (CST-6)
Location: BROKEN ARROW
Magnitude: 1.50 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in MUSKOGEE, OKLAHOMA
From 23-APR-11 21:03:00 to 23-APR-11 21:03:00 (CST-6)
Location: OKTAHA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter