Tornadoes and Flash Flooding in Oklahoma, May 20 to 22, 2019

Name: Tornadoes and Flash Flooding in Oklahoma, May 20 to 22, 2019
Start: 2019-05-20T11:36
End: 2019-05-22T21:45
Location: Oklahoma

May 20 to 22, 2019 · NWS TSA · 79 events in 14 counties and zones

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 2
Property damage: $2.4 million
Crop damage: None recorded
Events: 79

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS TSA wrote it up.

A strong upper level storm system moved into the Southern Plains from the Rockies on the 20th and 21st. The attendant warm front moved from northern Texas northward into northeastern Oklahoma during the day on the 20th, and then the cold front associated with this storm system moved through eastern Oklahoma during the late evening of the 20th and early morning hours of the 21st. Warm, moist, and very unstable air resided across eastern Oklahoma ahead of this system. This pattern resulted in multiple rounds of severe thunderstorms across eastern Oklahoma from the early afternoon of the 20th through late morning of the 21st. Very strong wind shear coexisting with the strong instability resulted in some supercell thunderstorms that produced large hail up to golfball size and multiple tornadoes on the 20th. A squall line developed along the cold front that moved into the area during the morning of the 21st, and that line of storms produced multiple tornadoes along the leading edge. Locally heavy rainfall and subsequent flash flooding occurred across northeastern Oklahoma as multiple rounds of thunderstorms affected generally the same area.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before the first event at May 20, 9:45 AM CST, 1 hour 51 minutes earlier.

Area forecast discussion, May 20, 9:45 AM CST, 1 hour 51 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
1045 AM CDT Mon May 20 2019

...UPDATE...

.DISCUSSION...
Band of convection extending through NE OK remains elevated
however sufficient instability remains present to support brief
intervals of severe potential. These storms will continue to
fester and likely spread E-NE while deeper boundary moisture
spreads northward. The residual boundary from the ongoing
convection will likely serve as the effective frontal zone and be
a focus of concern with expected afternoon / evening storms.
Forecast wind profiles appear to be realized in observational
satellite winds and area VWP profiles which raises confidence in a
broad region of favorable wind fields supportive of significant
severe weather from this afternoon through the evening hours. This
event will be rather long lived locally as a continued severe
threat will exist with developing linear MCS later tonight which
advances eastward across the area through early afternoon
Tuesday.
Flooding risks will continue to steadily raise and areas
northeast of Interstate 44 appear most susceptible to the highest
totals. River flood warnings have increased in number and further
rises are likely once the rainfall footprint is realized.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   74  70  81  63 /  80  80  80  10
FSM   80  68  79  61 /  30  50  80  20
MLC   78  69  80  64 /  60  50  80  10
BVO   73  67  79  59 /  80 100  80  10
FYV   76  66  78  59 /  50  60  80  20
BYV   75  66  77  61 /  30  60  80  40
MKO   76  67  80  60 /  60  60  80  10
MIO   73  68  78  61 /  70  90  70  10
F10   76  67  80  62 /  60  60  80  10
HHW   81  70  81  65 /  50  30  70  10

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...Flash Flood Watch through Tuesday evening for OKZ054>074.

AR...Flash Flood Watch through Tuesday evening for ARZ001-002-010-011.

&&

SHORT TERM...07

Hazardous weather outlook, May 20, 3:43 AM CST, 7 hours 53 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
443 AM CDT Mon May 20 2019

ARZ001-002-010-011-019-020-029-OKZ049-053>076-210945-
Adair OK-Benton AR-Carroll AR-Cherokee OK-Choctaw OK-Craig OK-
Crawford AR-Creek OK-Delaware OK-Franklin AR-Haskell OK-Latimer OK-
Le Flore OK-Madison AR-Mayes OK-McIntosh OK-Muskogee OK-Nowata OK-
Okfuskee OK-Okmulgee OK-Osage OK-Ottawa OK-Pawnee OK-Pittsburg OK-
Pushmataha OK-Rogers OK-Sebastian AR-Sequoyah OK-Tulsa OK-Wagoner OK-
Washington OK-Washington AR-
443 AM CDT Mon May 20 2019

...SIGNIFICANT SEVERE WEATHER TODAY WITH THE THREAT OF STRONG TORNADOES...

...HEAVY RAIN AND FLASH FLOODING LIKELY THROUGH TUESDAY EVENING...

This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.

.DAY ONE...Today and Tonight.
TORNADO.
	RISK...Elevated.
	AREA...Eastern Oklahoma and western Arkansas.
	ONSET...Late Morning into early Afternoon.

SEVERE THUNDERSTORM.
	RISK...Significant.
	AREA...Eastern Oklahoma and western Arkansas.
	ONSET...Late Morning into early Afternoon.

	AREA AT GREATEST RISK...Northeast Oklahoma.

FLASH FLOOD.
	RISK...Elevated.
	AREA...Much of eastern Oklahoma and western Arkansas.
	ONSET...Late Morning into early Afternoon.

HEAVY RAIN.
	RISK...Critical.
	AREA...eastern Oklahoma and western Arkansas.
	ONSET...Late Morning into early Afternoon.

	AREA AT GREATEST RISK...Northeast Oklahoma.

DISCUSSION...
A high impact severe weather and flood event is set to unfold across
eastern Oklahoma and western Arkansas Today into Tuesday. Thunderstorms
are expected to blossom across eastern Oklahoma and western Arkansas late
this Morning into this Afternoon as a potent storm system begins to pivot
out of the Southwest and into the Plains. As a warm front moves north across the
area this Morning into this Afternoon, the airmass across the region
will become increasingly unstable. This will allow any thunderstorms that
develop to become supercellular with a few strong tornadoes possible.
Large hail and wind gusts to around 80 mph will be possible as well.
This activity will taper off later Tonight.

In addition, locally heavy rainfall will be likely with an increased potential
for flash flooding across much of eastern Oklahoma and western Arkansas.
2 to 4 inches of rain will be common across the area with amounts as high
as 8 inches possible in some locations. This will likely lead to flash flooding
of creeks, streams and low lying areas.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Activation of the Regional Spotter Network Expected.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
TUESDAY...Severe Thunderstorm Potential...High Wind Potential...Heavy Rain Potential.
WEDNESDAY...Thunderstorm Potential...High Wind Potential.
THURSDAY...No Hazards.
FRIDAY...Thunderstorm Potential.
SATURDAY AND SUNDAY...No Hazards.

EXTENDED DISCUSSION...
The severe thunderstorms and heavy rainfall threat continues into Tuesday as
thunderstorm complex that will develop west of the area Tonight moves across
eastern oklahoma and western Arkansas. This complex will have the potential to
produce damaging winds, large hail and a few tornadoes. These storm are expected
to exit the area late Tuesday Afternoon or early Tuesday Evening.

Showers and thunderstorms may clip western portions of the area Wednesday night
and again on Friday as series of upper level disturbances slide to the west of
the area.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
Emergency management personnel and first responders should continue
to closely monitor the latest forecasts both Today and Tuesday.
Significant severe weather is expected Today with the potential
for high end impacts, including flash flooding.

weather.gov/tulsa contains additional information.

In the hours before

Special weather statement, May 20, 9:28 AM CST, 2 hours 8 minutes before

Special Weather Statement
National Weather Service Tulsa OK
1028 AM CDT Mon May 20 2019

OKZ059-060-064-201600-
Tulsa OK-Pawnee OK-Creek OK-
1028 AM CDT Mon May 20 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN CREEK...SOUTHEASTERN
PAWNEE AND WEST CENTRAL TULSA COUNTIES UNTIL 1100 AM CDT...

At 1028 AM CDT, a strong thunderstorm was located 3 miles east of
Shamrock, moving northeast at 30 mph.

Nickel size hail will be possible with this storm.

Locations in or near the path include...
Sand Springs...                   Mannford...
Drumright...                      Shamrock...
Keystone State Park...            Silver City...

This includes Interstate 44 between mile markers 185 and 192, and
between mile markers 194 and 209, and near mile marker 214.

LAT...LON 3627 9643 3617 9627 3616 9627 3616 9625
      3605 9606 3579 9648 3590 9662 3599 9662
TIME...MOT...LOC 1528Z 219DEG 28KT 3592 9651

Special weather statement, May 20, 10:27 AM CST, 1 hour 9 minutes before

Special Weather Statement
National Weather Service Tulsa OK
1127 AM CDT Mon May 20 2019

OKZ055-056-060-061-201700-
Tulsa OK-Rogers OK-Nowata OK-Washington OK-
1127 AM CDT Mon May 20 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ROGERS...
SOUTHEASTERN WASHINGTON...SOUTHERN NOWATA AND NORTHEASTERN TULSA
COUNTIES UNTIL NOON CDT...

At 1127 AM CDT, a strong thunderstorm was located 3 miles east of
Vera, moving northeast at 40 mph.

Nickel size hail will be possible with this storm.

Locations in or near the path include...
Nowata...                         Skiatook...
Collinsville...                   Oologah...
Ramona...                         Talala...
Vera...                           New Alluwe...
Watova...

LAT...LON 3668 9543 3660 9543 3659 9542 3627 9574
      3639 9600 3682 9583
TIME...MOT...LOC 1627Z 203DEG 36KT 3646 9581

The radar

The Tulsa radar (KINX), 37 km away, was scanning. The volume nearest the first event began at 17:34 UTC.

Open the radar archive at this moment

Event by event

43 flash flood, 12 tornado, 11 thunderstorm wind, 10 hail, 3 flood. Local standard time, as filed.

Thunderstorm Wind, Mayes

When: May 20, 11:36 AM CST
Where: Mayes County, 4 mi WNW of Adair
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 36.452, -95.337

Thunderstorm wind gusts were estimated to 60 mph.

Hail, Craig

When: May 20, 11:54 AM CST
Where: Craig County, Vinita
Measured: 1 in hail
Reported by: Broadcast Media
Coordinates: 36.650, -95.150

Hail, Craig

When: May 20, 12:01 PM CST
Where: Craig County, Vinita
Measured: 0.88 in hail
Reported by: Emergency Manager
Coordinates: 36.650, -95.150

Thunderstorm Wind, Delaware

When: May 20, 12:15 PM CST
Where: Delaware County, 4.06 mi ESE of Bernice
Measured: 65 kt (75 mph) estimated gust
Property damage: $250,000
Reported by: Emergency Manager
Coordinates: 36.587, -94.859

Strong thunderstorm wind destroyed boat docks and sunk boats at Monkey Island.

Hail, Ottawa

When: May 20, 12:19 PM CST
Where: Ottawa County, 3 mi NNE of Afton
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 36.740, -94.949

Hail, Delaware

When: May 20, 12:27 PM CST to 12:29 PM CST
Where: Delaware County, 2.3 mi ESE of Copeland
Measured: 0.88 in hail
Reported by: Trained Spotter
Coordinates: 36.661, -94.780

Thunderstorm Wind, Delaware

When: May 20, 12:32 PM CST
Where: Delaware County, Grove
Measured: 61 kt (70 mph) estimated gust
Property damage: $50,000
Reported by: Emergency Manager
Coordinates: 36.580, -94.770

Strong thunderstorm wind damaged boats docks on Grand Lake near Highway 59.

Flash Flood, Pawnee

When: May 20, 6:34 PM CST to 11:45 PM CST
Where: Pawnee County, 1.14 mi NW of Pawnee to 0.98 mi W of Pawnee
Cause: Heavy Rain
Reported by: Social Media
Coordinates: 36.341, -96.816

Numerous streets were flooded across Pawnee.

Hail, Osage

When: May 20, 6:51 PM CST
Where: Osage County, Hominy
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 36.420, -96.400

Hail, Osage

When: May 20, 6:57 PM CST
Where: Osage County, Hominy
Measured: 0.88 in hail
Reported by: Trained Spotter
Coordinates: 36.420, -96.400

Flash Flood, Osage

When: May 20, 7:01 PM CST to 11:45 PM CST
Where: Osage County, 0.24 mi SSE of Hominy to 0.85 mi S of Hominy
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 36.417, -96.398

Multiple streets were flooded, including portions of Highway 99 and Highway 20.

Flash Flood, Pawnee

When: May 20, 7:06 PM CST to 11:45 PM CST
Where: Pawnee County, 1 mi SE of Cleveland to 1.36 mi SSE of Cleveland
Cause: Heavy Rain
Reported by: Public
Coordinates: 36.310, -96.457

Multiple streets were flooded on the southeast side of Cleveland.

Flash Flood, Osage

When: May 20, 7:14 PM CST to 11:45 PM CST
Where: Osage County, Pawhuska to 3.2 mi W of Pawhuska
Cause: Heavy Rain
Property damage: $50,000
Reported by: Trained Spotter
Coordinates: 36.670, -96.330

Several streets were flooded in and around town, including Lynn Avenue that had about four feet of water flowing over it. A fire department was flooded.

Flash Flood, Washington

When: May 20, 7:26 PM CST to May 21, 1:45 AM CST
Where: Washington County, Bartlesville to 1.73 mi S of Bartlesville
Cause: Heavy Rain
Reported by: Social Media
Coordinates: 36.750, -96.000

Numerous streets in Bartlesville were flooded.

Flash Flood, Tulsa

When: May 20, 7:54 PM CST to May 21, 1:45 AM CST
Where: Tulsa County, 1.97 mi WNW of Owasso Arpt to 1.68 mi WNW of Owasso Arpt
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 36.279, -95.814

E 86th Street N was flooded at N 145th E Avenue.

Tornado, Tulsa

When: May 20, 8:05 PM CST to 8:06 PM CST
Where: Tulsa County, 1.77 mi SW of Garnett to 1.42 mi SW of Garnett
Rating: EF0
Path length: 0.5 mi
Path width: 100 yd
Property damage: $2,000
Reported by: NWS Storm Survey
Coordinates: 36.154, -95.855

A tornado snapped large tree limbs and blew down power poles. Based on this damage, maximum estimated wind in the tornado was 80 to 85 mph.

Flash Flood, Washington

When: May 20, 8:13 PM CST to May 21, 1:45 AM CST
Where: Washington County, 4.99 mi SSE of Dewey to 6.37 mi SSE of Dewey
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 36.733, -95.897

Portions of Highway 60 east of Bartlesville, between Bison Road and CR 4015, were flooded and closed.

Flash Flood, Tulsa

When: May 20, 8:18 PM CST to May 21, 1:45 AM CST
Where: Tulsa County, 3.48 mi SW of Collinsville to 4.12 mi NW of Collinsville
Cause: Heavy Rain
Reported by: Trained Spotter
Coordinates: 36.337, -95.878

Portions of N Memorial Drive were flooded and closed.

Flash Flood, Tulsa

When: May 20, 8:36 PM CST to May 21, 1:45 AM CST
Where: Tulsa County, 0.55 mi S of Sperry to 0.58 mi N of Sperry
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 36.292, -95.999

Several streets were flooded and closed from W 96th Street N to W 106th Street N in Sperry.

Flash Flood, Osage

When: May 20, 8:43 PM CST to 11:45 PM CST
Where: Osage County, 1.85 mi NW of Skiatook Arpt to 1.79 mi NW of Skiatook Arpt
Cause: Heavy Rain
Property damage: $75,000
Reported by: Amateur Radio
Coordinates: 36.372, -96.039

Streets were flooded near W Perrier Drive and N Tall Chief Street, and flood water reached occupied structures.

Tornado, Okmulgee

When: May 20, 9:01 PM CST to 9:11 PM CST
Where: Okmulgee County, 4.51 mi N of Bald Hill to 5.88 mi ENE of Hector
Rating: EF1
Path length: 4.4 mi
Path width: 450 yd
Property damage: $25,000
Reported by: NWS Storm Survey
Coordinates: 35.794, -95.845

This tornado damaged a home, destroyed an outbuilding, snapped and uprooted trees, and blew down power poles as it moved north-northeast. Based on this damage, maximum estimated wind in the tornado was 95 to 105 mph.

Tornado, Wagoner

When: May 20, 9:09 PM CST to 9:10 PM CST
Where: Wagoner County, 3.49 mi SSW of La Barge to 2.79 mi SSW of La Barge
Rating: EF0
Path length: 0.75 mi
Path width: 75 yd
Reported by: Trained Spotter
Coordinates: 35.937, -95.412

A tornado uprooted several trees and snapped large tree limbs. Based on this damage, maximum estimated wind in the tornado was 80 to 85 mph.

Flash Flood, Nowata

When: May 20, 9:12 PM CST to May 21, 1:45 AM CST
Where: Nowata County, Nowata to 0.04 mi N of Nowata
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 36.700, -95.630

Portions of Highway 169 in Nowata were closed due to high water.

Hail, Rogers

When: May 20, 9:22 PM CST
Where: Rogers County, Verdigris
Measured: 1 in hail
Reported by: Amateur Radio
Coordinates: 36.230, -95.680

Flash Flood, Mayes

When: May 20, 9:25 PM CST to May 21, 1:45 AM CST
Where: Mayes County, Pryor to 0.91 mi NW of Pryor
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 36.300, -95.320

Portions of Highway 69 and Graham Avenue in Pryor were flooded and closed.

Tornado, Cherokee

When: May 20, 9:29 PM CST to 9:45 PM CST
Where: Cherokee County, 3.54 mi WSW of Peggs to 2.91 mi N of Teresita
Rating: EF2
Path length: 11.9 mi
Path width: 2,700 yd
Continued into: Delaware, Ok (TSA)
Injuries: 1 direct, 0 indirect
Property damage: $800,000
Reported by: NWS Storm Survey
Coordinates: 36.053, -95.153

This is the first segment of a two-segment tornado. This large tornado developed southwest of the intersection of the N 420 Road and the W 660 Road. It moved northeast snapping and uprooting trees, and destroying outbuildings when it crossed those roads. Significant tree damage occurred as the tornado crossed the W 650 Road and approached Highway 82, where homes and businesses were severely damaged and numerous trees were snapped in Peggs. After moving through Peggs, the tornado continued to move northeast across mainly rural, rugged terrain where significant tree damage was noted for several miles. It crossed the N 495 Road snapping trees, damaging homes, and destroying outbuildings, and then moved into Delaware County. Based on this damage, maximum estimated wind in this segment of the tornado was 110 to 120 mph.

Tornado, Mayes

When: May 20, 9:35 PM CST to 9:43 PM CST
Where: Mayes County, 1.45 mi SE of Lake Hudson to 3.55 mi ESE of Salina
Rating: EF1
Path length: 3.6 mi
Path width: 1,100 yd
Property damage: $10,000
Reported by: NWS Storm Survey
Coordinates: 36.267, -95.149

This tornado developed in the forward flank of the Peggs/Leach supercell, over Lake Hudson. It moved ashore snapping power poles and uprooting trees along Highway 82. The tornado moved east and then northeast uprooting trees and snapping large limbs as it moved along Kenwood Road. Based on this damage, maximum estimated wind in the tornado was 90 to 100 mph.

Thunderstorm Wind, Mayes

When: May 20, 9:35 PM CST
Where: Mayes County, 1.3 mi S of Salina
Measured: 61 kt (70 mph) estimated gust
Reported by: NWS Storm Survey
Coordinates: 36.281, -95.146

Strong thunderstorm wind snapped large tree limbs.

Thunderstorm Wind, Cherokee

When: May 20, 9:40 PM CST
Where: Cherokee County, 2.7 mi W of Teresita
Measured: 70 kt (81 mph) estimated gust
Reported by: NWS Storm Survey
Coordinates: 36.118, -95.028

Strong thunderstorm wind, likely associated with the rear flank downdraft of the tornadic Peggs/Leach supercell, uprooted trees toward an easterly direction south of the tornado.

Flash Flood, Osage

When: May 20, 9:41 PM CST to 11:45 PM CST
Where: Osage County, 0.47 mi S of Hominy to 1.05 mi S of Hominy
Cause: Heavy Rain
Property damage: $500,000
Reported by: Emergency Manager
Coordinates: 36.413, -96.399

Up to five feet of water inundated forty homes and nine businesses in Hominy. The fire department used boats to rescue stranded people.

Thunderstorm Wind, Cherokee

When: May 20, 9:42 PM CST
Where: Cherokee County, 1.61 mi NW of Teresita
Measured: 70 kt (81 mph) estimated gust
Reported by: NWS Storm Survey
Coordinates: 36.134, -95.003

Strong thunderstorm wind, likely associated with the rear flank downdraft of the tornadic Peggs/Leach supercell, uprooted trees toward an easterly direction south of the tornado.

Tornado, Delaware

When: May 20, 9:45 PM CST to 9:56 PM CST
Where: Delaware County, 4.68 mi SW of Leach to 2.12 mi N of Twin Oaks
Rating: EF2
Path length: 9.1 mi
Path width: 2,700 yd
Property damage: $150,000
Reported by: NWS Storm Survey
Coordinates: 36.161, -94.989

This is the second segment of a two-segment tornado. This large tornado moved into the far southwestern portion of Delaware County and moved northeast toward Leach. It damaged homes, destroyed outbuildings, and snapped or uprooted many trees. The tornado crossed the Cherokee Turnpike west of Twin Oaks and dissipated. Based on this damage, maximum estimated wind in this segment of the tornado was 110 to 120 mph.

Thunderstorm Wind, Delaware

When: May 20, 9:50 PM CST
Where: Delaware County, 2.42 mi SSW of Leach
Measured: 70 kt (81 mph) estimated gust
Reported by: NWS Storm Survey
Coordinates: 36.169, -94.940

Strong thunderstorm wind, likely associated with the rear flank downdraft of the tornadic Peggs/Leach supercell, uprooted trees toward an easterly direction south of the tornado.

Flash Flood, Rogers

When: May 20, 9:51 PM CST to May 21, 1:45 AM CST
Where: Rogers County, 3.28 mi NW of Inola to 2.96 mi WNW of Tiawah
Cause: Heavy Rain
Reported by: NWS Employee
Coordinates: 36.185, -95.539

Portions of Highway 88 were flooded between Highway 412 and Claremore.

Flash Flood, Washington

When: May 20, 9:51 PM CST to May 21, 1:45 AM CST
Where: Washington County, 4.96 mi NNE of Oglesby to 5.03 mi NNE of Oglesby
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 36.700, -95.847

W 2200 Road was flooded at Hogshooter Creek, where a swift water rescue was conducted.

Thunderstorm Wind, Delaware

When: May 20, 9:52 PM CST
Where: Delaware County, 1.68 mi S of Leach
Measured: 70 kt (81 mph) estimated gust
Reported by: NWS Storm Survey
Coordinates: 36.176, -94.922

Strong thunderstorm wind, likely associated with the rear flank downdraft of the tornadic Peggs/Leach supercell, uprooted trees toward an easterly direction south of the tornado.

Tornado, Delaware

When: May 20, 9:54 PM CST to 10:04 PM CST
Where: Delaware County, 1.87 mi W of Leach to 1.77 mi NNE of Twin Oaks
Rating: EF1
Path length: 6.9 mi
Path width: 600 yd
Property damage: $50,000
Reported by: NWS Storm Survey
Coordinates: 36.204, -94.953

This tornado damaged homes, destroyed outbuildings, and uprooted trees. It developed as the Peggs/Leach tornado was dissipating, and moved east-northeast across the end of the earlier tornado's path. Based on this damage, maximum estimated wind in the tornado was 85 to 95 mph.

Thunderstorm Wind, Delaware

When: May 20, 9:55 PM CST
Where: Delaware County, 0.57 mi NW of Twin Oaks
Measured: 61 kt (70 mph) estimated gust
Reported by: NWS Storm Survey
Coordinates: 36.205, -94.858

Strong thunderstorm wind snapped large tree limbs.

Flash Flood, Okmulgee

When: May 20, 10:05 PM CST to May 21, 1:45 AM CST
Where: Okmulgee County, Beggs to 1.63 mi ENE of Beggs
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 35.730, -96.070

Portions of Highways 16 and Alt Highway 75 were flooded and impassable.

Flash Flood, Washington

When: May 20, 10:07 PM CST to May 21, 1:45 AM CST
Where: Washington County, 1.31 mi SSW of Dewey to 1.33 mi SSW of Dewey
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 36.782, -95.936

Lakeshore Mobile Home park was evacuated due to flooding of Coon Creek.

Flash Flood, Tulsa

When: May 20, 10:07 PM CST to May 21, 1:45 AM CST
Where: Tulsa County, 3 mi NNW of Broken Arrow to 2.51 mi SW of Broken Arrow Cotton
Cause: Heavy Rain
Reported by: Public
Coordinates: 36.090, -95.801

Portions of E 51st Street S were flooded.

Flash Flood, Tulsa

When: May 20, 10:10 PM CST to May 21, 1:45 AM CST
Where: Tulsa County, 0.43 mi NW of Owasso to 0.99 mi SSW of Owasso
Cause: Heavy Rain
Reported by: Broadcast Media
Coordinates: 36.273, -95.856

Numerous streets were flooded and closed across the City of Owasso.

Flash Flood, Tulsa

When: May 20, 10:10 PM CST to May 21, 1:45 AM CST
Where: Tulsa County, Collinsville to 0.93 mi S of Collinsville
Cause: Heavy Rain
Reported by: Broadcast Media
Coordinates: 36.370, -95.830

Numerous streets were flooded and closed across Collinsville.

Flash Flood, Tulsa

When: May 20, 10:25 PM CST to May 21, 1:45 AM CST
Where: Tulsa County, 2.69 mi SSE of Turley to 2.41 mi SSE of Turley
Cause: Heavy Rain
Reported by: Amateur Radio
Coordinates: 36.212, -95.957

N Lewis Avenue was flooded near E 41st Street N.

Flash Flood, Rogers

When: May 20, 10:25 PM CST to May 21, 1:45 AM CST
Where: Rogers County, Claremore to 2.65 mi S of Claremore
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 36.320, -95.600

Numerous roads were flooded and closed in and around Claremore.

Flash Flood, Wagoner

When: May 20, 10:28 PM CST to May 21, 1:45 AM CST
Where: Wagoner County, 2.96 mi NNE of Oneta to 3.27 mi NNE of Oneta
Cause: Heavy Rain
Reported by: Public
Coordinates: 36.062, -95.707

Portions of E Kenosha Street were flooded east of Evans Road.

Flash Flood, Tulsa

When: May 20, 10:31 PM CST to May 21, 1:45 AM CST
Where: Tulsa County, 0.66 mi ESE of Turley to 0.68 mi ESE of Turley
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 36.246, -95.959

N Lewis Avenue was flooded near E 66th Street N where water rescues were conducted. Multiple other roads in and around Turley were flooded and closed.

Flash Flood, Mayes

When: May 20, 10:51 PM CST to May 21, 1:45 AM CST
Where: Mayes County, 0.11 mi W of Pryor to 0.1 mi WSW of Pryor
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 36.300, -95.322

Highway 69 was flooded and closed near Park Street in Pryor.

Flash Flood, Creek

When: May 20, 11:19 PM CST to May 21, 1:45 AM CST
Where: Creek County, 2.11 mi SW of Mounds Arpt to 1.89 mi SW of Mounds Arpt
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 35.901, -96.060

Portions of W 181st Street S, east of Alt Highway 75, were flooded and closed.

Flash Flood, Okmulgee

When: May 20, 11:52 PM CST to May 21, 1:45 AM CST
Where: Okmulgee County, 1.82 mi WNW of Hector to 2.74 mi NW of Hector
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 35.840, -95.950

Portions of Hectorville Road and N 230 Road were flooded and closed.

Flash Flood, Okmulgee

When: May 21, 12:14 AM CST to 1:45 AM CST
Where: Okmulgee County, 3.92 mi W of Hector to 1.82 mi WSW of Hector
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 35.830, -95.990

Portions of Creager Road between the N 210 Road and the N 250 Road were flooded and closed.

Flash Flood, Rogers

When: May 21, 12:38 AM CST to 4:45 AM CST
Where: Rogers County, 4.36 mi SSE of Collinsville to 4.38 mi SSE of Collinsville
Cause: Heavy Rain
Reported by: NWS Employee
Coordinates: 36.308, -95.814

Portions of E 106th Street N were flooded and closed east of Highway 169.

Flash Flood, Washington

When: May 21, 1:03 AM CST to 4:15 AM CST
Where: Washington County, 0.65 mi SSE of Hi Way Arpt to 1.23 mi S of Hi Way Arpt
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 36.772, -95.964

Portions of Highway 123 were flooded and closed between Bartlesville and Dewey.

Flash Flood, Osage

When: May 21, 1:03 AM CST to 4:15 AM CST
Where: Osage County, 1.08 mi N of Fairfax to 1.06 mi NNW of Fairfax
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 36.586, -96.703

Portions of Highway 18 and Lake Road were flooded and closed north of Fairfax.

Flash Flood, Craig

When: May 21, 1:10 AM CST to 6:00 AM CST
Where: Craig County, 1 mi ENE of White Oak to 0.44 mi NE of White Oak
Cause: Heavy Rain
Property damage: $50,000
Reported by: Trained Spotter
Coordinates: 36.626, -95.253

Homes and businesses were flooded.

Flash Flood, Ottawa

When: May 21, 1:11 AM CST to 1:45 AM CST
Where: Ottawa County, Afton to 1.55 mi WSW of Afton
Cause: Heavy Rain
Property damage: $50,000
Reported by: Public
Coordinates: 36.700, -94.970

Roads in and around Afton were flooded, and high water flooded buildings.

Flash Flood, Pawnee

When: May 21, 1:49 AM CST to 4:15 AM CST
Where: Pawnee County, 4.18 mi NNW of Hallett to 3.86 mi NNW of Hallett
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 36.288, -96.591

Portions of Highway 64 between Pawnee and Cleveland were flooded and closed.

Flash Flood, Tulsa

When: May 21, 3:00 AM CST to 4:45 AM CST
Where: Tulsa County, 1.22 mi NNE of West Tulsa to 0.36 mi ESE of Bozarth
Cause: Heavy Rain
Reported by: County Official
Coordinates: 36.166, -96.010

A number of streets were flooded and closed across the City of Tulsa.

Flash Flood, Wagoner

When: May 21, 3:32 AM CST to 4:45 AM CST
Where: Wagoner County, 5.77 mi NNE of Broken Arrow to 5.86 mi NNE of Broken Arrow
Cause: Heavy Rain
Reported by: Public
Coordinates: 36.125, -95.735

A portion of the Creek Turnpike near E 31st Street S was flooded and closed.

Tornado, Creek

When: May 21, 5:08 AM CST to 5:11 AM CST
Where: Creek County, 3.99 mi WNW of Sapulpa to 4.46 mi NW of Sapulpa
Rating: EF1
Path length: 1.6 mi
Path width: 75 yd
Reported by: NWS Storm Survey
Coordinates: 36.023, -96.165

This tornado developed south of Sahoma Lake and moved north across the lake, then to the northeast, dissipating before reaching W 81st St S. The path is primarily based on radar data, which detected a strong gate-to-gate circulation and debris signature. A storm survey team from NWS Tulsa investigated the area for damage but couldn't access by road the area where the tornado occurred. The area is heavily wooded, which is most likely the origin of the radar detected tornadic debris signature. This tornado was observed by several people.

Thunderstorm Wind, Tulsa

When: May 21, 5:27 AM CST
Where: Tulsa County, 0.59 mi E of Tulsa
Measured: 61 kt (70 mph) estimated gust
Property damage: $5,000
Reported by: Broadcast Media
Coordinates: 36.151, -95.939

Strong thunderstorm wind damaged a home near the University of Tulsa, and snapped large tree limbs.

Tornado, Tulsa

When: May 21, 5:29 AM CST to 5:30 AM CST
Where: Tulsa County, 1.96 mi NW of Tulsa to 2.29 mi NW of Tulsa
Rating: EF0
Path length: 0.4 mi
Path width: 75 yd
Reported by: NWS Storm Survey
Coordinates: 36.171, -95.974

This tornado moved north across a mainly industrial area east of N Peoria Avenue and south of Highway 75. Radar detected a tornadic debris signature in this area, and a survey team from NWS Tulsa investigated the area. No damage was found in the industrial area, as access to the area where the tornado occurred was limited. This tornado dissipated just before a stronger tornado developed near this location.

Tornado, Tulsa

When: May 21, 5:31 AM CST to 5:35 AM CST
Where: Tulsa County, 2.09 mi NW of Tulsa to 1.89 mi WNW of Dawson
Rating: EF1
Path length: 2.3 mi
Path width: 550 yd
Injuries: 1 direct, 0 indirect
Property damage: $125,000
Reported by: NWS Storm Survey
Coordinates: 36.174, -95.972

This tornado developed just south of E Pine Street at N Rockford Avenue and moved east. The tornado damaged a number of homes and structures, blew down trees, and snapped two power poles. A man was injured when a large tree fell onto his house. The tornado dissipated just north of E Pine Street near N Oswego Avenue. Based on this damage, maximum estimated wind in the tornado was 90 to 100 mph.

Tornado, Tulsa

When: May 21, 5:37 AM CST to 5:39 AM CST
Where: Tulsa County, 3.03 mi NW of (Tul)tulsa Intl Arpt to 2.8 mi NNW of (Tul)tulsa Intl Arpt
Rating: EF1
Path length: 0.7 mi
Path width: 75 yd
Reported by: NWS Storm Survey
Coordinates: 36.233, -95.915

This tornado damaged trees, and resulted in a radar detected tornadic debris signature. It was observed by several people.

Thunderstorm Wind, Tulsa

When: May 21, 5:39 AM CST
Where: Tulsa County, 3.25 mi N of Bixby
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 35.997, -95.886

Thunderstorm wind gusts were estimated to 60 mph.

Tornado, Tulsa

When: May 21, 5:48 AM CST to 5:49 AM CST
Where: Tulsa County, 3.49 mi NNE of Owasso to 3.47 mi SSE of Collinsville
Rating: EF0
Path length: 0.6 mi
Path width: 100 yd
Reported by: Law Enforcement
Coordinates: 36.316, -95.823

This tornado snapped large tree limbs north of the TTC Owasso Campus. Based on this damage, maximum estimated wind in the tornado was 65 to 70 mph.

Hail, Rogers

When: May 21, 5:57 AM CST
Where: Rogers County, 1 mi NNW of Claremore
Measured: 0.88 in hail
Reported by: Trained Spotter
Coordinates: 36.333, -95.607

Hail, Rogers

When: May 21, 6:00 AM CST
Where: Rogers County, 2.81 mi NNE of Sageeyah
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 36.408, -95.633

Hail, Rogers

When: May 21, 6:10 AM CST
Where: Rogers County, 2 mi WSW of Foyil
Measured: 1 in hail
Reported by: Public
Coordinates: 36.419, -95.553

Flash Flood, Washington

When: May 21, 6:23 AM CST to 10:00 AM CST
Where: Washington County, 1.49 mi ENE of Bartlesville to 1.27 mi E of Bartlesville
Cause: Heavy Rain
Reported by: Public
Coordinates: 36.757, -95.975

Johnstone Park in Bartlesville was flooded. Portions of Highway 123 were flooded and closed.

Flash Flood, Craig

When: May 21, 6:43 AM CST to 7:45 AM CST
Where: Craig County, 1 mi W of Vinita to 2.86 mi WSW of Vinita Arpt
Cause: Heavy Rain
Reported by: Trained Spotter
Coordinates: 36.650, -95.168

Portions of Highways 69 and 60 were flooded and closed.

Flash Flood, Tulsa

When: May 21, 6:50 AM CST to 10:30 AM CST
Where: Tulsa County, 1.51 mi WNW of Owasso Arpt to 1.32 mi WNW of Owasso Arpt
Cause: Heavy Rain
Reported by: Social Media
Coordinates: 36.279, -95.805

A portion of E 86th Street N near Centennial Park was flooded and closed.

Flash Flood, Craig

When: May 21, 7:08 AM CST to 9:45 AM CST
Where: Craig County, 0.79 mi SE of Vinita to 2.35 mi N of Vinita Arpt
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 36.643, -95.139

Portions of Highway 60 east of Vinita were flooded and closed.

Flash Flood, Nowata

When: May 21, 7:45 AM CST to 9:45 AM CST
Where: Nowata County, 3 mi E of Lenapah to 4.78 mi ENE of Lenapah
Cause: Heavy Rain
Reported by: Fire Department/Rescue
Coordinates: 36.850, -95.576

Portions of Highway 10 east of Lenapah were flooded and closed.

Flash Flood, Rogers

When: May 21, 7:55 AM CST to 10:30 AM CST
Where: Rogers County, Claremore to 1.72 mi S of Claremore
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 36.320, -95.600

Numerous roads in and around the City of Claremore were flooded and closed.

Flood, Creek

When: May 21, 8:05 AM CST to May 22, 7:30 AM CST
Where: Creek County, 1.45 mi SW of Sapulpa to 1.38 mi SW of Sapulpa
Cause: Heavy Rain
Reported by: Public
Coordinates: 35.986, -96.120

A portion of S Hickory Street was flooded and closed near Rock Creek.

Flash Flood, Osage

When: May 21, 9:30 AM CST to 10:00 AM CST
Where: Osage County, Skiatook to 0.34 mi E of Skiatook
Cause: Heavy Rain
Property damage: $100,000
Reported by: Department of Highways
Coordinates: 36.370, -96.000

A number of roads were flooded and closed on the east side of Skiatook. Residents of five homes were trapped by flood waters and had to be rescued by boat.

Flood, Rogers

When: May 21, 12:14 PM CST to May 22, 10:15 AM CST
Where: Rogers County, 1.91 mi ENE of Collinsville to 2.39 mi ENE of Collinsville
Cause: Heavy Rain
Reported by: Trained Spotter
Coordinates: 36.383, -95.800

About eight feet of water covered portions of the 4050 Road south of Highway 169.

Flood, Osage

When: May 21, 1:02 PM CST to May 22, 9:45 PM CST
Where: Osage County, 3.34 mi NNW of Skiatook to 3.49 mi NNW of Skiatook
Cause: Heavy Rain
Property damage: $150,000
Reported by: Trained Spotter
Coordinates: 36.416, -96.018

A few houses were flooded with two to three feet of water.

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Flash Flood: Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
Tornado: A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
Flood: Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Oklahoma in 2019 Every state in 2019 This day in weather history The tornado archive for Oklahoma, 2019 Warnings in Oklahoma, May 2019

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 823817, 823818, 823819, 823821, 823822, 823823, 823824, 824348, 823826, 823827, 824349, 824350, 824351, 824352, 824354, 823781, 824356, 824360, 824415, 824428, 823782, 823783, 824432, 823828, 824434, 823784, 823787, 823789, 823790, 824437, 823791, 823785, 823792, 824446, 824452, 823793, 823788, 823795, 824456, 824460, and more.