A strong storm system slowly moved from the central Rockies into the Southern and Central Plains on the 4th and 5th. The associated surface frontal boundary located over northern Texas early on the 4th moved north into central Oklahoma as a warm front by the late afternoon, and then near the Kansas border on the 5th ahead of a cold front. The first round of thunderstorms developed over eastern Oklahoma during the morning hours of the 4th. These thunderstorms were rooted above a shallow, stable layer of air near the ground, and the strongest storms produced hail up to penny size. Another round of thunderstorms developed during the early evening hours. The storms over northeastern Oklahoma were rooted above a shallow, stable layer of air near the ground, and produced large hail up to half dollar size. The thunderstorms that developed over east central Oklahoma near the warm front were rooted near the ground. These storms were able to become supercells, given the moderately strong instability that had developed during the afternoon, combined with strong deep layer wind shear. The low-level wind shear had become strong near the warm front itself, which supported the development of a few tornadoes. Thunderstorms continued to develop across the area during the overnight hours of the 4th and early morning hours of the 5th, which resulted in locally heavy rainfall and flash flooding. The final round of thunderstorms developed during the early afternoon of the 5th, with the strongest storms producing hail up to quarter size.
Widespread, heavy rainfall during this period resulted in three to eight inches of rain across much of east central and northeastern Oklahoma, with areas of up to twelve inches. In addition to the flash flooding, this widespread, heavy rainfall resulted in major flooding along portions of the Neosho River, the Illinois River, the Deep Fork River, and Baron Fork Creek, as well as moderate flooding along portions of Polecat Creek, and the Poteau River.

Flash Flood in OKMULGEE, OKLAHOMA
From 04-MAY-22 20:17:00 to 05-MAY-22 05:00:00 (CST-6)
Location: OKMULGEE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported widespread flooding in Okmulgee. About 35 homes were damaged from flooding, and 50 swift water rescues were made for people trapped in flooded homes and vehicles. Monetary damage from the flood was unknown.

Hail in TULSA, OKLAHOMA
From 04-MAY-22 07:14:00 to 04-MAY-22 07:14:00 (CST-6)
Location: JENKS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in TULSA, OKLAHOMA
From 04-MAY-22 17:04:00 to 04-MAY-22 17:04:00 (CST-6)
Location: WEKIWA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in OSAGE, OKLAHOMA
From 04-MAY-22 17:08:00 to 04-MAY-22 17:08:00 (CST-6)
Location: SAND SPGS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail was reported at the Sand Springs Pogue Airport.

Hail in TULSA, OKLAHOMA
From 04-MAY-22 17:07:00 to 04-MAY-22 17:07:00 (CST-6)
Location: SAND SPGS
Magnitude: 1.25 
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Public

Half dollar size hail damaged homes, businesses, and vehicles.

Tornado in OKFUSKEE, OKLAHOMA
From 04-MAY-22 18:30:00 to 04-MAY-22 18:49:00 (CST-6)
Location: BEARDEN
Tornado F-scale: EF1
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado developed in Seminole County, and produced damage in Cromwell before moving into Okfuskee County. It crossed into Okfuskee County about a mile northeast of Cromwell, or about four miles west of Bearden, and moved east-northeast damaging trees. The tornado enlarged and turned more northeast as it approached the E1130 Road, where the tree damage increased with numerous uprooted and snapped trees through where it crossed Highway 48 with a damage path width of about 3/4 of a mile wide. Outbuildings were also damaged. A gas station received minor damage where it crossed I-40. The tornado continued north-northeast producing light tree damage across the E1100 Road and Highway 56, then dissipated before it reached Highway 62 northwest of Okemah. Based on this damage, maximum estimated wind in this segment of the tornado was 105 to 110 mph.

Tornado in OKFUSKEE, OKLAHOMA
From 04-MAY-22 18:44:00 to 04-MAY-22 18:45:00 (CST-6)
Location: BEARDEN
Tornado F-scale: EF1
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado uprooted a few trees, and snapped large tree limbs. Based on this damage, maximum estimated wind in the tornado was 90 to 95 mph.

Hail in OKMULGEE, OKLAHOMA
From 04-MAY-22 19:32:00 to 04-MAY-22 19:32:00 (CST-6)
Location: NUYAKA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in CREEK, OKLAHOMA
From 04-MAY-22 18:15:00 to 04-MAY-22 18:15:00 (CST-6)
Location: BELLVUE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in OKMULGEE, OKLAHOMA
From 04-MAY-22 20:04:00 to 04-MAY-22 20:04:00 (CST-6)
Location: OKMULGEE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Strong thunderstorm wind blew down a tree onto Highway 56.

Hail in OKFUSKEE, OKLAHOMA
From 04-MAY-22 20:26:00 to 04-MAY-22 20:26:00 (CST-6)
Location: OKEMAH
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in OKFUSKEE, OKLAHOMA
From 04-MAY-22 20:48:00 to 04-MAY-22 20:48:00 (CST-6)
Location: BEARDEN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in OKFUSKEE, OKLAHOMA
From 04-MAY-22 20:50:00 to 04-MAY-22 20:50:00 (CST-6)
Location: OKEMAH ARPT
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet station near Okemah measured 63 mph thunderstorm wind gusts.

Hail in OKMULGEE, OKLAHOMA
From 04-MAY-22 21:09:00 to 04-MAY-22 21:09:00 (CST-6)
Location: COALTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in OKMULGEE, OKLAHOMA
From 04-MAY-22 21:09:00 to 04-MAY-22 21:09:00 (CST-6)
Location: COALTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm wind gusts were estimated to 60 mph.

Tornado in PITTSBURG, OKLAHOMA
From 05-MAY-22 01:09:00 to 05-MAY-22 01:13:00 (CST-6)
Location: BLOCKER
Tornado F-scale: EF1
Property damage: 30.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado snapped a few trees, uprooted a number of trees, and damaged several outbuildings. Based on this damage, maximum estimated wind in the tornado was 90 to 95 mph.

Hail in OKMULGEE, OKLAHOMA
From 05-MAY-22 11:24:00 to 05-MAY-22 11:24:00 (CST-6)
Location: OKMULGEE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in PITTSBURG, OKLAHOMA
From 05-MAY-22 12:35:00 to 05-MAY-22 12:35:00 (CST-6)
Location: HAILEYVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in TULSA, OKLAHOMA
From 05-MAY-22 13:21:00 to 05-MAY-22 13:21:00 (CST-6)
Location: ALSUMA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in TULSA, OKLAHOMA
From 05-MAY-22 13:21:00 to 05-MAY-22 13:21:00 (CST-6)
Location: ALSUMA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in TULSA, OKLAHOMA
From 05-MAY-22 13:23:00 to 05-MAY-22 13:23:00 (CST-6)
Location: BROKEN ARROW COTTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in TULSA, OKLAHOMA
From 05-MAY-22 13:35:00 to 05-MAY-22 13:35:00 (CST-6)
Location: TULSA YOUNG ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in MUSKOGEE, OKLAHOMA
From 05-MAY-22 13:43:00 to 05-MAY-22 13:43:00 (CST-6)
Location: BRAGGS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flash Flood in OKMULGEE, OKLAHOMA
From 04-MAY-22 19:57:00 to 04-MAY-22 22:45:00 (CST-6)
Location: NUYAKA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Portions of Highway 56 west of Okmulgee were impassable due to flooding.

Flash Flood in MAYES, OKLAHOMA
From 04-MAY-22 22:00:00 to 05-MAY-22 02:30:00 (CST-6)
Location: PRYOR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Portions of W 500 Road were closed between 9th Street and S 430 Road due to flooding.

Flood in CREEK, OKLAHOMA
From 05-MAY-22 04:00:00 to 06-MAY-22 18:00:00 (CST-6)
Location: SAPULPA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Polecat Creek near Sapulpa rose above its flood stage of 21 feet at 5:00 am CDT on May 5th. The river crested at 26.50 feet at 1:30 pm CDT on the 5th, resulting in moderate flooding. Moderate flooding of pasture lands occurred between Sapulpa and Jenks. Several rural roads and outbuildings were flooded. Monetary damage from this flood was unknown. The river fell below flood stage at 7:00 pm CDT on the 6th.

Flood in OTTAWA, OKLAHOMA
From 05-MAY-22 03:00:00 to 09-MAY-22 21:00:00 (CST-6)
Location: NARCISSA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Neosho River near Commerce rose above its flood stage of 15 feet at 4:00 am CDT on May 5th. The river crested at 20.87 feet at 11:45 am CDT on the 7th, resulting in moderate flooding. Riverview Park in Miami was flooded, and considerable agricultural flooding occurred. Portions of Highway 125 were flooded and closed. The river fell below flood stage at 10:00 pm CDT on the 9th.

Flood in OTTAWA, OKLAHOMA
From 05-MAY-22 04:15:00 to 08-MAY-22 23:30:00 (CST-6)
Location: HOCKERVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Spring River near Quapaw rose above its flood stage of 20 feet at 5:15 am CDT on May 5th. The river crested at 31.98 feet at 2:30 am CDT on the 7th, resulting in major flooding. Agricultural land and county roads were flooded to a depth of several feet. Monetary damage from this flood was unknown. The river fell below flood stage at 12:30 am CDT on the 9th.

Flash Flood in MAYES, OKLAHOMA
From 04-MAY-22 22:00:00 to 05-MAY-22 02:30:00 (CST-6)
Location: PRYOR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

County Road 520 was flooded and closed between Elliott Road and Oakwood Road on the south side of Pryor.

Flash Flood in ADAIR, OKLAHOMA
From 05-MAY-22 02:19:00 to 05-MAY-22 03:45:00 (CST-6)
Location: BUNCH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Portions of S 4637 Road were flooded.

Flood in ADAIR, OKLAHOMA
From 05-MAY-22 00:45:00 to 06-MAY-22 15:00:00 (CST-6)
Location: WATTS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Illinois River near Watts rose above its flood stage of 13 feet at 1:45 am CDT on May 5th. The river crested at 27.50 feet at 2:30 pm CDT on the 5th, resulting in major flooding. This was the fourth highest crest on record at this site. Disastrous flooding occurred from the Arkansas border to Fidler's Bend, with many permanent campgrounds and cabins overtopped. Monetary damage from this flood was unknown. The river fell below flood stage at 4:00 pm CDT on the 6th.

Flash Flood in SEQUOYAH, OKLAHOMA
From 05-MAY-22 01:45:00 to 05-MAY-22 05:00:00 (CST-6)
Location: VIAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Portions of Highway 64 were flooded and closed.

Flood in SEQUOYAH, OKLAHOMA
From 05-MAY-22 07:40:00 to 05-MAY-22 16:00:00 (CST-6)
Location: BLACKGUM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Portions of Indian Road north of Highway 10A were completely washed out. Monetary damage from this flood was unknown.

Flood in ADAIR, OKLAHOMA
From 04-MAY-22 18:15:00 to 06-MAY-22 22:15:00 (CST-6)
Location: CHEWEY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Illinois River near Chewey rose above its flood stage of 12 feet at 7:15 pm CDT on May 4th. The river crested at 28.85 feet at 8:30 pm CDT on the 5th, resulting in major flooding. This was the fourth highest crest on record at this site. Disastrous flooding occurred from Fidler's Bend to near Hanging Rock, with numerous roads inundated and permanent campgrounds and cabins overtopped. Monetary damage from this flood was unknown. The river fell below flood stage at 11:15 pm CDT on the 6th.

Flood in OKFUSKEE, OKLAHOMA
From 05-MAY-22 07:45:00 to 05-MAY-22 16:00:00 (CST-6)
Location: MASON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Portions of Mason Road east of Highway 48 were washed out. Monetary damage from this flood was unknown.

Flood in CREEK, OKLAHOMA
From 05-MAY-22 08:38:00 to 05-MAY-22 14:00:00 (CST-6)
Location: DEPEW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Cropland and portions of several county roads were flooded.

Flood in CHEROKEE, OKLAHOMA
From 04-MAY-22 20:45:00 to 07-MAY-22 19:45:00 (CST-6)
Location: TAHLEQUAH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Illinois River near Tahlequah rose above its flood stage of 11 feet at 9:45 pm CDT on May 4th. The river crested at 27.53 feet at 5:00 am CDT on the 6th, resulting in major flooding. This was the fourth highest crest on record at this site. Disastrous flooding occurred from near Hanging Rock to the headwaters of Lake Tenkiller. Highway 10 was flooded and closed to its intersection with Highway 51. Many cabins and parks were inundated. Monetary damage from this flood was unknown. The river fell below flood stage at 8:45 pm CDT on the 7th.

Flood in MAYES, OKLAHOMA
From 05-MAY-22 09:12:00 to 05-MAY-22 14:00:00 (CST-6)
Location: SPAVINAW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Portions of Highway 82 south of Spavinaw were flooded and closed.

Flood in CHEROKEE, OKLAHOMA
From 05-MAY-22 04:15:00 to 05-MAY-22 15:30:00 (CST-6)
Location: STANDING ROCK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Baron Fork Creek near Eldon rose above its flood stage of 18 feet at 5:15 am CDT on May 5th. The river crested at 27.89 feet at 8:00 am CDT on the 5th, resulting in major flooding. This was the second highest crest on record at this site. Disastrous flooding occurred, with many permanent campgrounds and cabins overtopped. Monetary damage from this flood was unknown. The river fell below flood stage at 4:30 pm CDT on the 5th.

Flood in LE FLORE, OKLAHOMA
From 05-MAY-22 10:45:00 to 06-MAY-22 05:15:00 (CST-6)
Location: SHADY PT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Poteau River near Poteau rose above its flood stage of 24 feet at 11:45 am CDT on May 5th. The river crested at 26.68 feet at 6:15 pm CDT on the 5th, resulting in moderate flooding. Croplands and county roads were inundated by flood water. The river fell below flood stage at 6:15 am CDT on the 6th.

Flood in LE FLORE, OKLAHOMA
From 05-MAY-22 14:45:00 to 08-MAY-22 03:15:00 (CST-6)
Location: ARKOMA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Poteau River near Panama rose above its flood stage of 29 feet at 3:45 pm CDT on May 5th. The river crested at 36.20 feet at 4:45 pm CDT on the 6th, resulting in moderate flooding. Agricultural land was flooded from near Panama to near Arkoma, and county roads were closed. The river fell below flood stage at 4:15 am CDT on the 8th.

Flood in OKMULGEE, OKLAHOMA
From 04-MAY-22 20:30:00 to 12-MAY-22 21:30:00 (CST-6)
Location: PRESTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Deep Fork River near Beggs rose above its flood stage of 18 feet at 9:30 pm CDT on May 4th. The river crested at 30.94 feet at 8:45 am CDT on the 6th, resulting in major flooding. This was the fifth highest crest on record at this site. Disastrous flooding occurred with homes flooded northwest of Okmulgee, and county roads inundated. Monetary damage from this flood was unknown. The river fell below flood stage at 10:30 pm CDT on the 12th.

Flash Flood in TULSA, OKLAHOMA
From 05-MAY-22 11:15:00 to 05-MAY-22 13:00:00 (CST-6)
Location: BIXBY
Flood cause: Heavy Rain
Property damage: 2.00M
Crop damage: 0.00K
Reported by: Emergency Manager

Flooding in Bixby damaged at least 37 homes and four businesses, and flooded roads. Much of the damage was in a neighborhood south of Highway 64 and west of S Mingo Road.