A persistent, convectively active pattern, consisting of a deep trough over the western U. S. and ridging along the Gulf Coast and southeastern U. S., set the stage for numerous rounds of rainfall across the Southern Plains from May 18th into early June. The atmospheric moisture remained unseasonably high during this period, resulting in very efficient rainfall-producing showers and thunderstorms. Antecedent conditions from the rainfall in late April and early May meant that soil moisture was already high, and any additional rainfall would quickly become runoff. Antecedent river and lake levels were also above normal ahead of this active storm period. Six to sixteen inches of rain fell between May 18th and May 30th along and northwest of a line from near Okmulgee, OK to near Bentonville, AR, and three to five inches of rain fell southeast of this line. Widespread ten to sixteen inch amounts fell across portions of southern Kansas and northern Oklahoma. During this period, six USACE Tulsa District flood control reservoirs set new pools of record in northeastern Oklahoma: Kaw, Keystone, Skiatook, Birch, Oologah, and Hudson Lakes.
The result was 31 river floods at 22 river forecast points in eastern Oklahoma. There was a total of 54 crests during those 31 floods, two of which were new records (Arkansas River near Ponca City, and Bird Creek at Avant), and 25 of which were crests in the major flood category. Fourteen of the 31 floods lasted seven days or more; eleven lasted ten days or more; two lasted fourteen days or more; and one lasted 21 days or more. The Arkansas River near Muskogee was above flood stage the longest at approximately 22 days and 5 hours, and was also above the Major flood category the longest at approximately 13 days and 12 hours. Thus, flooding that began in late May continued into early to mid June.

Flood in OKMULGEE, OKLAHOMA
From 01-JUN-19 00:00:00 to 03-JUN-19 20:30:00 (CST-6)
Location: NUYAKA
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 12:30 am CDT on May 22nd. The river crested at 26.01 feet at 6:45 pm CDT on the 26th, and then crested again at 23.44 feet at 4:00 am CDT on the 31st. Both crests resulted in moderate flooding. Agricultural flooding occurred, and county roads were flooded. The river remained above flood stage through the end of May, and finally fell below flood stage at 9:30 pm CDT on June 3rd.

Flood in OTTAWA, OKLAHOMA
From 01-JUN-19 00:00:00 to 06-JUN-19 06:30:00 (CST-6)
Location: NORTH MIAMI
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 7:45 pm on May 20th. The river crested at 25.51 feet at 10:00 am CDT on the 24th, crested again at 25.33 feet at 11:00 am CDT on the 25th, and crested a third time at 24.43 feet at 7:00 pm CDT on the 29th. Each crest resulted in major flooding. The crest at 25.51 feet was the fifth highest crest on record. Widespread and damaging flooding occurred, with homes and businesses on the south side of Miami flooded. Multiple roads were closed, including Highway 125 south of Miami. Monetary damage from this flood is unknown. The river remained in flood through the end of May, and finally fell below flood stage at 7:30 am CDT on June 6th.

Flood in PAWNEE, OKLAHOMA
From 01-JUN-19 00:00:00 to 01-JUN-19 01:00:00 (CST-6)
Location: RALSTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Arkansas River near Ralston rose above its flood stage of 16 feet at 10:45 pm CDT on May 20th. The river crested at 19.26 feet at 4:00 pm CDT on the 21st, resulting in moderate flooding. The river crested a second time at 22.14 feet at 6:00 am CDT on the 23rd, resulting in major flooding. This crest was the seventh highest stage on record. The river crested a third time at 21.99 feet at 6:30 am CDT on the 25th, and a fourth time at 22.03 feet at 7:15 am CDT on the 26th, both of which resulted in major flooding. Severe agricultural flooding occurred, and county roads were flooded. Monetary damage from this flood is unknown. The river remained above flood stage through the end of May, and finally fell below flood stage at 2:00 am CDT on June 1st.

Flood in TULSA, OKLAHOMA
From 01-JUN-19 00:00:00 to 02-JUN-19 17:15:00 (CST-6)
Location: COLLINSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Caney River near Collinsville rose above its flood stage of 26 feet at 12:15 am CDT on May 21st. The river crested at 33.05 feet at 2:45 pm CDT on the 21st, and crested a second time 37.12 feet at 6:15 pm CDT on the 23rd, both crests resulting in major flooding. The crest of 37.12 feet was the third highest crest on record. Very severe flooding occurred from Collinsville to areas downstream, with extensive farmland flooding, homes northeast of Collinsville flooded, and roads near the river flooded. The river crested a third time at 33.31 feet at 9:45 am CDT on the 26th, which resulted in major flooding, and a fourth and final time at 32.74 feet at 8:30 am CDT on the 30th, which resulted in moderate flooding. Monetary damage from this flood is unknown. The river remained above flood stage through the end of May, and finally fell below flood stage at 6:15 pm CDT on June 2nd.

Flood in TULSA, OKLAHOMA
From 01-JUN-19 00:00:00 to 01-JUN-19 05:30:00 (CST-6)
Location: PRATTVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Arkansas River near Tulsa rose above its flood stage of 18 feet at 12:30 am CDT on May 22nd. The river crested at 23.41 feet at 3:00 pm CDT on the 29th, resulting in major flooding. This was the second highest crest on record. Severe flooding occurred along the Arkansas River in Tulsa County, with some homes in south Tulsa and Bixby flooded. Riverside Drive in Tulsa was closed in places. Monetary damage from this flood is unknown. The river remained above flood stage through the end of May, and finally fell below flood stage at 6:30 am CDT on June 1st.

Flood in MUSKOGEE, OKLAHOMA
From 01-JUN-19 00:00:00 to 01-JUN-19 20:45:00 (CST-6)
Location: HASKELL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Arkansas River near Haskell rose above its flood stage of 19 feet at 3:00 am CDT on May 22nd. The river crested at 24.24 feet at 10:15 pm CDT on the 29th, resulting in major flooding. This was the second highest crest on record. Severe agricultural flooding occurred, and county roads were flooded. Monetary damage from this flood is unknown. The river remained above flood stage through the end of May, and finally fell below flood stage at 9:45 pm CDT on June 1st.

Flood in ROGERS, OKLAHOMA
From 01-JUN-19 00:00:00 to 03-JUN-19 05:00:00 (CST-6)
Location: VERDIGRIS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Verdigris River near Claremore rose above its flood stage of 36 feet at 2:45 pm CDT on May 23rd. The river crested at 45.46 feet at 2:00 am CDT on the 27th, and then a second time at 44.69 feet at 7:30 pm CDT on the 30th, both crests resulting in major flooding. Severe flooding occurred between the Oologah Dam and Verdigris, with some homes flooded on the west side of Claremore. Portions of county roads were flooded. Monetary damage from this flood is unknown. The river remained above flood stage through the end of May, and finally fell below flood stage at 6:00 am CDT on June 3rd.

Flood in NOWATA, OKLAHOMA
From 01-JUN-19 00:00:00 to 01-JUN-19 06:15:00 (CST-6)
Location: LENAPAH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Verdigris River near Lenapah rose above its flood stage of 30 feet at 2:00 am CDT on May 21st. The river crested at 36.02 feet at 12:30 pm CDT on the 22nd, crested at 36.66 feet at 1:30 am CDT on the 24th, and crested a third time at 37.44 feet at 4:45 pm CDT on the 28th, each crest resulting in major flooding. The third crest was the eighth highest stage on record. Severe agricultural flooding occurred, and many county roads were flooded, including Highway 10 east of Lenapah. Monetary damage from this flood is unknown. The river remained above flood stage through the end of May, and finally fell below flood stage at 7:15 am CDT on June 1st.

Flood in MUSKOGEE, OKLAHOMA
From 01-JUN-19 00:00:00 to 12-JUN-19 06:30:00 (CST-6)
Location: TAFT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Arkansas River near Muskogee rose above its flood stage of 28 feet at 3:00 am CDT on May 21st. The river crested at 46.39 feet at 9:00 am CDT on the 26th, and crested a second time 46.00 feet at 7:30 am CDT on the 30th, both crests resulting in major flooding. The crest of 46.39 feet was the second highest crest on record, and the crest at 46.00 feet was the third highest crest on record. Very severe flooding occurred from Muskogee to Webbers Falls. Homes and businesses were flooded, and numerous roads were closed. Monetary damage from this flood is unknown. The river remained above flood stage through the end of May, crested again at 32.63 feet at 3:15 pm CDT on June 7th, and then finally fell below flood stage at 7:30 am CDT on June 12th.

Flood in WASHINGTON, OKLAHOMA
From 01-JUN-19 00:00:00 to 01-JUN-19 00:15:00 (CST-6)
Location: VERA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Caney River near Ramona rose above its flood stage of 26 feet at 3:00 am CDT on May 21st. The river crested at 29.59 feet at 3:45 am CDT on the 23rd, crested at 28.09 feet at 4:30 am CDT on the 26th, and crested a third time at 28.12 feet at 10:15 pm CDT on the 29th, each crest resulting in moderate flooding. Severe flooding occurred between Ochelata and the northeastern tip of Tulsa County, and rural roads were closed between Ramona and Talala. Monetary damage from this flood is unknown. The river remained above flood stage through the end of May, and finally fell below flood stage at 1:15 am CDT on June 1st.

Flood in LE FLORE, OKLAHOMA
From 01-JUN-19 00:00:00 to 04-JUN-19 15:00:00 (CST-6)
Location: PANCO
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 9:30 am CDT on May 25th. The river crested at 36.03 feet at 6:30 pm CDT on the 30th, resulting in moderate flooding. Agricultural land was flooded from near Panama to near Arkoma, and county roads were closed. The river remained above flood stage through the end of May, and finally fell below flood stage at 4:00 pm CDT on June 4th.