A tornado outbreak occurred during the late afternoon and early evening hours of the 31st. A stalled front and deeply mixed dryline served as a focus for thunderstorm development. The front/dryline triple point was where the most intense supercells initiated. These storms traveled eastward, eventually impacting the Oklahoma City metropolitan area. Several tornadoes occurred, including the El Reno tornado, which unfortunately claimed several lives. In addition to the tornado, very large hail and heavy rains led to flash flooding in Oklahoma City. This flash flood event ranked as one of the worst in Oklahoma City history in terms of fatalities and damages to property. The event lasted well into the overnight hours.

Tornado in CANADIAN, OKLAHOMA
From 31-MAY-13 17:03:00 to 31-MAY-13 17:44:00 (CST-6)
Location: CALUMET
Tornado F-scale: EF3
Property damage: 300.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

On 31 May, an intense, long-track tornado formed southwest of El Reno. This exceptionally wide tornado took a complex path, rapidly changing in both speed and direction. The tornado spared El Reno and its airport from a direct hit, tracking just south of those locations. The tornado damaged numerous homes along with a few businesses near El Reno.  Additionally, intense sub-vortices destroyed crops in numerous fields in the area.
The tornado developed at 6:03 p.m. just northeast of the intersection of Heaston and Reuter roads.  Initially, the tornado moved to the southeast at 20 to 25 mph.  At 6:09 p.m., the tornado turned to the east, just south of Reno Road between Heaston and Brandley roads.  The tornado continued to expand in size just southwest of the El Reno Municipal Air Park, where its speed increased to 30 to 40 mph.  As the tornado passed just south of the airport, two satellite tornadoes formed briefly on the west side of the tornado.
At 6:19 p.m. the tornado crossed Highway 81 near Reno Road as it continued to expand in size.  There, the tornado abruptly turned to the north, while also accelerating to greater than 50 mph.   From 6:24 to 6:26 p.m., the tornado reached its maximum in size and intensity near the intersection of Radio and Reuter roads.  The tornado, still very large, slowed down as it approached I-40.  From 6:27 to 6:35 the tornado made a loop just north of the interstate while decelerating to less than 10 mph.  After 6:35, the tornado moved east once again, and dissipated at 6:42 p.m. near the intersection of I-40 and Banner Road.

Eight people were killed in the tornado, all in vehicles. This included three severe storm researchers who were killed east of US-81 as the tornado overtook their position. Additionally, several other people were killed while attempting to escape the tornado near Highway 81.  Finally, two people were killed along I-40 while waiting for the storm to pass.
The monetary damages were estimated.  This tornado was well sampled by two separate mobile research radar teams ��� the University of Oklahoma RaXPol radar, and the Center for Severe Weather Research���s Doppler on Wheels. Both radars captured high temporal and spatial resolution data relatively close to the large tornado. Both radars measured winds in the tornado of more than 200 mph. The RaXPol radar data shows winds of at least 295 mph very close to the surface. These intense winds were present in very small sub-vortices within the larger tornado circulation. An analysis of the high resolution radar data combined with the results of the ground damage survey indicates that none of these intense sub-vortices impacted any structures in rural Canadian County. So despite the measured wind speeds, surveyors could not find any damage that would support a rating higher than EF3 based solely on the damage indicators used with the EF scale.
The maximum tornado width was 2.6 miles.  However, the damaging wind swath was much larger, as non-tornadic downdraft winds extended for at least a mile south of the tornado.  Given the difficulty of separating this damage from tornadic damage, the OU RaXPol radar was used to help determine the width.

Tornado in OKLAHOMA, OKLAHOMA
From 31-MAY-13 18:53:00 to 31-MAY-13 18:55:00 (CST-6)
Location: (OKC)WILL ROGERS APT
Tornado F-scale: EF1
Property damage: 80.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado touched down just west of SW 59th Street and Pennsylvania Avenue in southwest Oklahoma City, and moved east to just southwest of SW 59th Street and Western Avenue. Roof and tree damage occurred with this tornado. Damage amounts are estimated.

Tornado in CANADIAN, OKLAHOMA
From 31-MAY-13 17:29:00 to 31-MAY-13 17:41:00 (CST-6)
Location: YUKON
Tornado F-scale: EF2
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The storm damage survey and Doppler on Wheels mobile radar detected a long-lived anticyclonic tornado southwest of Yukon. Some structural damage was noted along with damage to trees. Damages estimated.

Hail in CANADIAN, OKLAHOMA
From 31-MAY-13 17:55:00 to 31-MAY-13 17:55:00 (CST-6)
Location: YUKON
Magnitude: 1.75 
Reported by: Public

No damage was reported.

Hail in CANADIAN, OKLAHOMA
From 31-MAY-13 21:45:00 to 31-MAY-13 21:45:00 (CST-6)
Location: RICHLAND
Magnitude: 1.25 
Reported by: Public

No damage was reported.

Hail in OKLAHOMA, OKLAHOMA
From 31-MAY-13 21:55:00 to 31-MAY-13 21:55:00 (CST-6)
Location: CHOCTAW
Magnitude: 1.25 
Reported by: Trained Spotter

The hail was reported at East Reno and South Henney roads. No damage was reported.

Flash Flood in OKLAHOMA, OKLAHOMA
From 31-MAY-13 20:53:00 to 31-MAY-13 23:59:00 (CST-6)
Location: (PWA)WILEY POST APT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flooding reported along 7300 block of Shoreline Dr. No damage was reported.

Flash Flood in OKLAHOMA, OKLAHOMA
From 31-MAY-13 21:34:00 to 31-MAY-13 22:34:00 (CST-6)
Location: VALLEY BROOK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Media reports of high water rescue at southwest 86th and Western. No damage or injuries reported.

Hail in COMANCHE, OKLAHOMA
From 31-MAY-13 17:10:00 to 31-MAY-13 17:10:00 (CST-6)
Location: GERONIMO
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

The hail was reported via the NSSL shave project.

Hail in COMANCHE, OKLAHOMA
From 31-MAY-13 17:20:00 to 31-MAY-13 17:20:00 (CST-6)
Location: PUMPKIN CENTER
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

The hail was reported via the NSSL shave project. No damage was reported.

Hail in COMANCHE, OKLAHOMA
From 31-MAY-13 17:30:00 to 31-MAY-13 17:30:00 (CST-6)
Location: GERONIMO
Magnitude: 2.25 
Reported by: Other Federal Agency

The hail was reported via the NSSL SHAVE project. No damage was reported.

Hail in COMANCHE, OKLAHOMA
From 31-MAY-13 17:30:00 to 31-MAY-13 17:30:00 (CST-6)
Location: LAWTON
Magnitude: 2.50 
Reported by: Other Federal Agency

The hail was reported via the NSSL SHAVE project. No damage was reported.

Flash Flood in OKLAHOMA, OKLAHOMA
From 31-MAY-13 20:00:00 to 31-MAY-13 22:00:00 (CST-6)
Location: WARR ACRES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several individuals were swept under a roadway and killed while seeking shelter in a storm drain. No damage was reported.

Hail in OKLAHOMA, OKLAHOMA
From 31-MAY-13 22:27:00 to 31-MAY-13 22:27:00 (CST-6)
Location: CHOCTAW
Magnitude: 1.25 
Reported by: Trained Spotter

At Ne 10th and N Henney Rd.

Flash Flood in OKLAHOMA, OKLAHOMA
From 31-MAY-13 23:00:00 to 31-MAY-13 23:59:00 (CST-6)
Location: HARRAH
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Water over a bridge on Dobbs Rd. north of NE 93rd St. One fatality occurred when a car was swept off the road in the floodwaters. No other injuries were reported. Damage estimated.

Hail in COMANCHE, OKLAHOMA
From 31-MAY-13 17:30:00 to 31-MAY-13 17:30:00 (CST-6)
Location: LAWTON
Magnitude: 2.50 
Reported by: Public

No damage was reported.

Thunderstorm Wind in KAY, OKLAHOMA
From 31-MAY-13 16:00:00 to 31-MAY-13 16:00:00 (CST-6)
Location: PONCA CITY
Magnitude: 56.00 EG
Reported by: Public

No damage was reported.

Hail in POTTAWATOMIE, OKLAHOMA
From 31-MAY-13 21:05:00 to 31-MAY-13 21:05:00 (CST-6)
Location: ST LOUIS
Magnitude: 1.75 
Reported by: Public

No damage was reported.

Hail in CLEVELAND, OKLAHOMA
From 31-MAY-13 20:23:00 to 31-MAY-13 20:23:00 (CST-6)
Location: SLAUGHTERVILLE
Magnitude: 1.75 
Reported by: NWS Employee

The hail fell a half mile north and west of the intersection of southeast 108th St. and Maguire road. No damage was reported.

Hail in COMANCHE, OKLAHOMA
From 31-MAY-13 17:30:00 to 31-MAY-13 17:30:00 (CST-6)
Location: LAWTON
Magnitude: 2.50 
Reported by: Trained Spotter

No damage was reported.

Thunderstorm Wind in PAYNE, OKLAHOMA
From 31-MAY-13 16:49:00 to 31-MAY-13 16:49:00 (CST-6)
Location: LAKE CARL BLACKWELL DAM
Magnitude: 61.00 EG
Reported by: Trained Spotter

No damage was reported.

Hail in OKLAHOMA, OKLAHOMA
From 31-MAY-13 17:45:00 to 31-MAY-13 17:45:00 (CST-6)
Location: WARR ACRES
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The hail was reported at Hefner and Council roads.

Hail in CLEVELAND, OKLAHOMA
From 31-MAY-13 20:20:00 to 31-MAY-13 20:20:00 (CST-6)
Location: SLAUGHTERVILLE
Magnitude: 1.75 
Reported by: Public

No damage was reported.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 31-MAY-13 18:21:00 to 31-MAY-13 18:21:00 (CST-6)
Location: (OKC)WILL ROGERS APT
Magnitude: 62.00 MG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: ASOS

The wind gusts were caused by rear flank downdraft winds near an associated tornadic circulations. Considerable damage occurred to the ASOS, including full removal from static platform. Widespread damage to trees and a few buildings on the Will Rogers World Airport grounds. Damages estimated.

Tornado in OKLAHOMA, OKLAHOMA
From 31-MAY-13 17:54:00 to 31-MAY-13 18:09:00 (CST-6)
Location: WHEATLAND
Tornado F-scale: EF1
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado moved into Oklahoma County from Canadian County in western Oklahoma City and moved generally east along and near SW 15th Street before dissipating near SW 15th and Meridian Avenue. Buildings, power lines and trees were damaged, including broken windows at a couple of motels along Meridian Avenue. Damage amounts were estimated.

Tornado in GRADY, OKLAHOMA
From 31-MAY-13 18:45:00 to 31-MAY-13 18:45:00 (CST-6)
Location: TUTTLE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Two storm chasers filmed a tornado to the northeast of Tuttle near the Canadian River. The tornado produced no known damage.

Thunderstorm Wind in GRADY, OKLAHOMA
From 31-MAY-13 18:50:00 to 31-MAY-13 18:50:00 (CST-6)
Location: TUTTLE
Magnitude: 65.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind damage occurred in and near Tuttle. Damage was reported to barns, trees, and at least one home suffered roof damage.

Hail in CANADIAN, OKLAHOMA
From 31-MAY-13 21:42:00 to 31-MAY-13 21:42:00 (CST-6)
Location: PIEDMONT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in COMANCHE, OKLAHOMA
From 31-MAY-13 17:35:00 to 31-MAY-13 17:35:00 (CST-6)
Location: PUMPKIN CENTER
Magnitude: 2.50 
Reported by: Other Federal Agency

The hail was reported via the NSSL SHAVE project. No damage was reported.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 31-MAY-13 18:10:00 to 31-MAY-13 18:10:00 (CST-6)
Location: OKLAHOMA CITY
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

No damage was reported.

Thunderstorm Wind in PAYNE, OKLAHOMA
From 31-MAY-13 18:08:00 to 31-MAY-13 18:08:00 (CST-6)
Location: (SWO)STILLWATER AIRPORT
Magnitude: 50.00 MG
Reported by: ASOS

No damage was reported.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 31-MAY-13 18:20:00 to 31-MAY-13 18:20:00 (CST-6)
Location: OKLAHOMA CITY
Magnitude: 63.00 MG
Reported by: Mesonet

Hail in COMANCHE, OKLAHOMA
From 31-MAY-13 17:35:00 to 31-MAY-13 17:35:00 (CST-6)
Location: LAWTON
Magnitude: 2.75 
Reported by: Other Federal Agency

The hail was reported via the NSSL SHAVE project. No damage was reported.

Hail in CLEVELAND, OKLAHOMA
From 31-MAY-13 19:00:00 to 31-MAY-13 19:00:00 (CST-6)
Location: MOORE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in CLEVELAND, OKLAHOMA
From 31-MAY-13 19:00:00 to 31-MAY-13 19:00:00 (CST-6)
Location: MOORE
Magnitude: 61.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Extensive tree damage occurred with several trees snapped. One large tree was also snapped at the base. Damages estimated.

Hail in OKLAHOMA, OKLAHOMA
From 31-MAY-13 18:36:00 to 31-MAY-13 18:36:00 (CST-6)
Location: BETHANY
Magnitude: 1.25 
Reported by: Trained Spotter

The hail was reported at interstate 40 and Meridian. No damage was reported.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 31-MAY-13 18:00:00 to 31-MAY-13 18:30:00 (CST-6)
Location: WHEATLAND
Magnitude: 83.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Wind damage was widespread across southwest Oklahoma City as the tornadic storm produced several surges of intense winds as it moved across the area. The damage was widespread from County Line Road from SW 29th and SW 44th Streets, southeastward across Will Rogers World Airport to along SW 89th Steet between Portland Avenue and Pennsylvanie Avenue. An outbuilding was destroyed at Western Heights High School near SW 44th Street and Council Road with winds estimated at 95 mph. Winds gusts of 61 knots (70 mph) were measured at 7:05 pm CDT at the Will Rogers Airport (OKC) ASOS with one of these surges, followed by another gust of 62 knots (71 mph) with a second surge at 7:21 pm CDT.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 31-MAY-13 18:05:00 to 31-MAY-13 18:05:00 (CST-6)
Location: (OKC)WILL ROGERS APT
Magnitude: 61.00 MG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: ASOS

The wind gusts were caused by rear flank downdraft winds near an associated tornadic circulations. Considerable damage occurred to the ASOS, including full removal from static platform. Widespread damage to trees and a few buildings on the Will Rogers World Airport grounds. Damages estimated.

Thunderstorm Wind in POTTAWATOMIE, OKLAHOMA
From 31-MAY-13 20:10:00 to 31-MAY-13 20:10:00 (CST-6)
Location: SHAWNEE
Magnitude: 54.00 MG
Reported by: Mesonet

No damage was reported.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 31-MAY-13 22:30:00 to 31-MAY-13 22:30:00 (CST-6)
Location: CHOCTAW
Magnitude: 52.00 EG
Reported by: Public

No damage was reported.

Tornado in CANADIAN, OKLAHOMA
From 31-MAY-13 16:55:00 to 31-MAY-13 16:56:00 (CST-6)
Location: CALUMET
Tornado F-scale: EF0
Property damage: 1.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Storm damage survey and Spotter Network reports confirmed a brief tornado in rural areas south of Calumet. Convergent wheat pattern and minor tree damage were noted.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 31-MAY-13 19:01:00 to 31-MAY-13 19:01:00 (CST-6)
Location: (TIK)TINKER AFB
Magnitude: 54.00 MG
Reported by: ASOS

No damage was reported.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 31-MAY-13 19:14:00 to 31-MAY-13 19:14:00 (CST-6)
Location: (TIK)TINKER AFB
Magnitude: 76.00 MG
Reported by: ASOS

No damage was reported.

Tornado in KINGFISHER, OKLAHOMA
From 31-MAY-13 16:35:00 to 31-MAY-13 16:37:00 (CST-6)
Location: OMEGA
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast media and Spotter Network reports of brief tornado northeast of Omega. No damage was reported.

Tornado in CANADIAN, OKLAHOMA
From 31-MAY-13 17:55:00 to 31-MAY-13 17:57:00 (CST-6)
Location: EL RENO
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tornado was reported from Spotter Network where a strong radar signal from terminal doppler TOKC was also located. And damage from this tornado would have been indiscernible as this tornado occurred within the damage path of the earlier El Reno EF5 tornado.

Tornado in OKLAHOMA, OKLAHOMA
From 31-MAY-13 18:35:00 to 31-MAY-13 18:37:00 (CST-6)
Location: VALLEY BROOK
Tornado F-scale: EF0
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

An EF-0 tornado traveled from Creekwood Terrace southeast to Keith Drive near SE 54th Street. Minor damage to trees and power lines was noted. Damages estimated.

Thunderstorm Wind in CLEVELAND, OKLAHOMA
From 31-MAY-13 19:24:00 to 31-MAY-13 19:24:00 (CST-6)
Location: NORMAN
Magnitude: 57.00 MG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The wind gust was measured at the NWS forecat office in Norman. Light tree damage was noted. But no significant damage occurred.

Hail in GRADY, OKLAHOMA
From 31-MAY-13 19:36:00 to 31-MAY-13 19:36:00 (CST-6)
Location: BRIDGE CREEK
Magnitude: 1.75 
Reported by: Amateur Radio

The hail was reported at mile marker 102 along the H.E. Bailey Turnpike. No damage was reported.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 31-MAY-13 18:15:00 to 31-MAY-13 18:30:00 (CST-6)
Location: WARR ACRES
Magnitude: 83.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Another area of widespread wind damage occurred with a surge of wind from the tornadic storm across southwest Oklahoma City, from roughly Portland Avenue and Reno Avenue southeast to near SW 83rd Street and Walker Avenue. The most significant damage occurred near SW 79th Street and Western Avenue where winds estimated at 95 mph uprooted large trees and damaged a service station canopy.

Tornado in CLEVELAND, OKLAHOMA
From 31-MAY-13 18:42:00 to 31-MAY-13 18:43:00 (CST-6)
Location: MOORE
Tornado F-scale: EF1
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Storm damage survey indicated a brief EF-1 tornado developed near in the South Lakes Park area near SW 119th Street and Meridian Avenue. Damage to several homes, trees, and power lines and poles occurred. Damages estimated.

Thunderstorm Wind in CLEVELAND, OKLAHOMA
From 31-MAY-13 18:50:00 to 31-MAY-13 19:00:00 (CST-6)
Location: MOORE
Magnitude: 70.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

An area of wind damage occurred through Moore. The most significant damage was roughly from an area near NW 5th Street and Dillon Street to east of Main Street and Eastern Avenue. Roof damage occurred to many homes and two strip malls. Damage occurred also to many trees, a few light stands, and a scoreboard at a junior high school football field. Damage amounts are estimated.

Thunderstorm Wind in CLEVELAND, OKLAHOMA
From 31-MAY-13 18:30:00 to 31-MAY-13 18:30:00 (CST-6)
Location: MOORE
Magnitude: 65.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Roof damage was noted to houses along May Avenue from SW 89th Street south to at least SW 96th Street.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 31-MAY-13 19:31:00 to 31-MAY-13 19:31:00 (CST-6)
Location: (PWA)WILEY POST APT
Magnitude: 50.00 MG
Reported by: ASOS

No damage was reported.

Hail in GRADY, OKLAHOMA
From 31-MAY-13 19:45:00 to 31-MAY-13 19:45:00 (CST-6)
Location: BRIDGE CREEK
Magnitude: 1.75 
Reported by: Amateur Radio

No damage was reported.

Hail in MCCLAIN, OKLAHOMA
From 31-MAY-13 19:55:00 to 31-MAY-13 19:55:00 (CST-6)
Location: NEWCASTLE
Magnitude: 1.25 
Reported by: NWS Employee

Nickel to half dollar size hail was reported. No damage was reported.

Tornado in CANADIAN, OKLAHOMA
From 31-MAY-13 17:51:00 to 31-MAY-13 17:54:00 (CST-6)
Location: YUKON
Tornado F-scale: EF0
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

An relatively long-lived weak tornado began northwest of SW 15th Street and Morgan Road in western Oklahoma City to the southeast of Yukon. The tornado moved just south of east for a little over 1.5 miles and into Oklahoma County. Damage to trees and power lines was noted, as well as very minor structural damage to some homes. Damages estimated.

Flash Flood in OKLAHOMA, OKLAHOMA
From 31-MAY-13 19:00:00 to 31-MAY-13 22:00:00 (CST-6)
Location: OKLAHOMA CITY
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Reports of tunnels flooding in downtown Oklahoma City. Minor damage was reported with no injuries. Damages estimated.

Hail in POTTAWATOMIE, OKLAHOMA
From 31-MAY-13 20:03:00 to 31-MAY-13 20:03:00 (CST-6)
Location: SHAWNEE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MCCLAIN, OKLAHOMA
From 31-MAY-13 19:55:00 to 31-MAY-13 19:55:00 (CST-6)
Location: NEWCASTLE
Magnitude: 52.00 EG
Reported by: NWS Employee

No damage was reported.

Tornado in CANADIAN, OKLAHOMA
From 31-MAY-13 17:12:00 to 31-MAY-13 17:13:00 (CST-6)
Location: UNION CITY
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

One of two satellite tornadoes was observed rotating around the primary El Reno tornado by storm chasers and the RaXPol mobile research radar.

Hail in CLEVELAND, OKLAHOMA
From 31-MAY-13 20:17:00 to 31-MAY-13 20:17:00 (CST-6)
Location: NOBLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GRADY, OKLAHOMA
From 31-MAY-13 20:32:00 to 31-MAY-13 20:32:00 (CST-6)
Location: TUTTLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in POTTAWATOMIE, OKLAHOMA
From 31-MAY-13 20:55:00 to 31-MAY-13 20:55:00 (CST-6)
Location: ASHER
Magnitude: 2.50 
Reported by: Emergency Manager

The hail was reported along highway 39. No damage was reported.

Hail in BLAINE, OKLAHOMA
From 31-MAY-13 15:59:00 to 31-MAY-13 15:59:00 (CST-6)
Location: GREENFIELD
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail ranged in size from quarter to half dollar size. No damage was reported.

Hail in KAY, OKLAHOMA
From 31-MAY-13 16:00:00 to 31-MAY-13 16:00:00 (CST-6)
Location: PONCA CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tornado in CANADIAN, OKLAHOMA
From 31-MAY-13 17:13:00 to 31-MAY-13 17:14:00 (CST-6)
Location: EL RENO
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

The second of two satellite tornadoes that was observed rotating around the primary El Reno tornado by storm chasers and the RaXPol mobile research radar.

Flash Flood in OKLAHOMA, OKLAHOMA
From 31-MAY-13 19:06:00 to 31-MAY-13 22:06:00 (CST-6)
Location: (OKC)WILL ROGERS APT
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Several vehicles were partially submerged in floodwaters. Five individuals seeking shelter in a drainage ditch were swept away and killed. Damage estimated.

Flash Flood in CLEVELAND, OKLAHOMA
From 31-MAY-13 19:55:00 to 31-MAY-13 23:55:00 (CST-6)
Location: MOORE
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous vehicles submerged in water along Reno Ave. Damage estimated.

Flash Flood in MCCLAIN, OKLAHOMA
From 31-MAY-13 20:35:00 to 31-MAY-13 23:59:00 (CST-6)
Location: NEWCASTLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous roads closed in and around Newcastle. No damage was reported.

Hail in BLAINE, OKLAHOMA
From 31-MAY-13 16:20:00 to 31-MAY-13 16:20:00 (CST-6)
Location: GEARY
Magnitude: 1.75 
Reported by: Other Federal Agency

Hail reported from NSSL SHAVE project. No damages reported.

Hail in CADDO, OKLAHOMA
From 31-MAY-13 16:20:00 to 31-MAY-13 16:20:00 (CST-6)
Location: HINTON
Magnitude: 1.25 
Reported by: Other Federal Agency

Hail was reported via NSSL SHAVE project. No damage was reported.

Hail in CLEVELAND, OKLAHOMA
From 31-MAY-13 20:15:00 to 31-MAY-13 20:15:00 (CST-6)
Location: NOBLE
Magnitude: 1.75 
Reported by: NWS Employee

No damage was reported.

Hail in COMANCHE, OKLAHOMA
From 31-MAY-13 16:50:00 to 31-MAY-13 16:50:00 (CST-6)
Location: FAXON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

The hail was reported via the SHAVE project.

Hail in COMANCHE, OKLAHOMA
From 31-MAY-13 17:00:00 to 31-MAY-13 17:00:00 (CST-6)
Location: LAWTON
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

The hail was reported via the NSSL shave project.

Flash Flood in OKLAHOMA, OKLAHOMA
From 31-MAY-13 20:50:00 to 31-MAY-13 23:59:00 (CST-6)
Location: DEL CITY
Flood cause: Heavy Rain
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Street flooding and vehicles stranded at southeast 29th St. and Sunnylane Rd. Damage estimated.

Hail in CANADIAN, OKLAHOMA
From 31-MAY-13 17:05:00 to 31-MAY-13 17:05:00 (CST-6)
Location: EL RENO
Magnitude: 5.90 
Reported by: Public

Very large hail fell in El Reno as the large tornado developed to the south. Photos submitted to a local television station showed hail may have measured as large as 6.3 in diameter. Unfortunately, no official measurements were taken, so the 6 diameter hail near Gotebo, OK on May 23, 2011 remains the record largest hailstone officially documented in Oklahoma.