A moist and very unstable airmass was in place over the eastern two thirds of Oklahoma, to the east of a dryline. Additionally, strong wind shear was present as a mid-level jet streak carved into the southern Plains. Several supercells developed along the dryline during the mid and late afternoon hours, producing large hail. Two supercells in central Oklahoma also produced tornadoes, including a few significant, damaging tornadoes.

Tornado in LINCOLN, OKLAHOMA
From 19-MAY-13 15:56:00 to 19-MAY-13 16:24:00 (CST-6)
Location: FALLIS
Tornado F-scale: EF3
Reported by: NWS Storm Survey

The large tornado continued to move northeast from Logan County into Lincoln County. The tornado passed just southeast of Fallis and then clipped the southeastern portion of Carney. It produced EF3 damage to a number of homes from just south of Carney into the southeast portion of the town. The tornado finally dissipated about 3 miles southeast of Tryon. Motions observed visually in this tornado suggest that the tornado was likely stronger then EF3 in western Lincoln County, but no damage indicators were available that would have supplied a rating higher than EF3 in this area.

Tornado in CLEVELAND, OKLAHOMA
From 19-MAY-13 17:00:00 to 19-MAY-13 17:20:00 (CST-6)
Location: LAKE THUNDERBIRD DAM
Tornado F-scale: EF3
Reported by: NWS Storm Survey

A long track tornado began in Cleveland County in east Norman to the north of Lake Thunderbird along 96th Avenue to the south of Tecumseh Road. The tornado moved northeast, crossing the eastern arm of Lake Thunderbird. A number of homes were significantly damaged as the tornado moved east-northeast through neighborhoods from near Indian Hills Road and 168th Avenue SE to the Pottawatomie County line. The tornado then moved into Pottawatomie County.

Tornado in POTTAWATOMIE, OKLAHOMA
From 19-MAY-13 17:20:00 to 19-MAY-13 17:50:00 (CST-6)
Location: PINK
Tornado F-scale: EF4
Reported by: NWS Storm Survey

The large tornado moved east-northeast into Pottawatomie County then curving northeast as it approached State Highway 102. The tornado moved through a mobile home park north of Independence Road after crossing State Highway 102. Just northeast of the mobile home park, a permanent home was destroyed with much of the debris blown well to the northeast.  It continued northeast crossing Interstate 40 near the intersection of US-177, then curved north-northeast finally dissipating near Wolverine Road and Coker Road. One fatality occurred in the mobile home park, and another man was killed in his vehicle.

Hail in CLEVELAND, OKLAHOMA
From 19-MAY-13 16:45:00 to 19-MAY-13 16:45:00 (CST-6)
Location: MOORE
Magnitude: 1.00 
Reported by: Public

Hail in CLEVELAND, OKLAHOMA
From 19-MAY-13 16:47:00 to 19-MAY-13 16:47:00 (CST-6)
Location: NORMAN
Magnitude: 2.50 
Reported by: Public

Reported at 36th Ave. Nw and Tecumseh.

Hail in MCCLAIN, OKLAHOMA
From 19-MAY-13 17:00:00 to 19-MAY-13 17:00:00 (CST-6)
Location: NEWCASTLE
Magnitude: 1.39 
Reported by: Emergency Manager

Hail in CLEVELAND, OKLAHOMA
From 19-MAY-13 17:02:00 to 19-MAY-13 17:02:00 (CST-6)
Location: MOORE
Magnitude: 1.00 
Reported by: Public

Hail in CLEVELAND, OKLAHOMA
From 19-MAY-13 17:12:00 to 19-MAY-13 17:12:00 (CST-6)
Location: MOORE
Magnitude: 1.50 
Reported by: Public

Hail in OKLAHOMA, OKLAHOMA
From 19-MAY-13 17:21:00 to 19-MAY-13 17:21:00 (CST-6)
Location: (TIK)TINKER AFB
Magnitude: 1.00 
Reported by: AWOS

Hail in OKLAHOMA, OKLAHOMA
From 19-MAY-13 17:28:00 to 19-MAY-13 17:28:00 (CST-6)
Location: MIDWEST CITY
Magnitude: 1.00 
Reported by: Public

Reported at 29th and Douglas.

Hail in OKLAHOMA, OKLAHOMA
From 19-MAY-13 17:30:00 to 19-MAY-13 17:30:00 (CST-6)
Location: CHOCTAW
Magnitude: 1.25 
Reported by: Storm Chaser

Hail in LINCOLN, OKLAHOMA
From 19-MAY-13 18:24:00 to 19-MAY-13 18:24:00 (CST-6)
Location: PRAGUE
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 19-MAY-13 15:15:00 to 19-MAY-13 15:15:00 (CST-6)
Location: THE VILLAGE
Magnitude: 52.00 EG
Property damage: 10.00K
Reported by: Public

Powerlines down at Penn and Memorial.

Thunderstorm Wind in WOODWARD, OKLAHOMA
From 19-MAY-13 15:15:00 to 19-MAY-13 15:15:00 (CST-6)
Location: MOORELAND ARPT
Magnitude: 53.00 MG
Reported by: Mesonet

Thunderstorm Wind in POTTAWATOMIE, OKLAHOMA
From 19-MAY-13 18:10:00 to 19-MAY-13 18:10:00 (CST-6)
Location: SHAWNEE
Magnitude: 53.00 MG
Reported by: Mesonet

Thunderstorm Wind in KAY, OKLAHOMA
From 19-MAY-13 19:05:00 to 19-MAY-13 19:05:00 (CST-6)
Location: NEWKIRK
Magnitude: 51.00 EG
Reported by: Mesonet

Mesonet station at Newkirk recorded a gust 59 mph.

Tornado in POTTAWATOMIE, OKLAHOMA
From 19-MAY-13 17:59:00 to 19-MAY-13 18:00:00 (CST-6)
Location: JOHNSON
Tornado F-scale: EF0
Reported by: NWS Storm Survey

A tornado began about just south of the Pottawatomie-Lincoln County line damaging some trees before moving into Lincoln County.

Tornado in LINCOLN, OKLAHOMA
From 19-MAY-13 18:00:00 to 19-MAY-13 18:12:00 (CST-6)
Location: PRAGUE
Tornado F-scale: EF2
Reported by: NWS Storm Survey

This tornado moved into Lincoln County from Pottawatomie County and affect areas to the west and north of Prague. Large sctions of roof were removed from two homes northwest of Prague.

Tornado in OKLAHOMA, OKLAHOMA
From 19-MAY-13 15:22:00 to 19-MAY-13 15:30:00 (CST-6)
Location: EDMOND
Tornado F-scale: EF1
Reported by: NWS Storm Survey

A tornado touched down in Edmond just northwest of 33rd Street and Boulevard Street. The tornado moved east just north of 33rd Street causing primarily EF0 damage, primarily to trees. The tornado turned northeast just before crossing Interstate 35 with isolated EF1 damage beginning just west of Interstate 35. One home north of E 15th Street and east of Interstate 35 suffered significant roof damage just before the tornado dissipated north of 15th Street and Air Depot Blvd.

Tornado in OKLAHOMA, OKLAHOMA
From 19-MAY-13 15:33:00 to 19-MAY-13 15:34:00 (CST-6)
Location: ARCADIA LAKE
Tornado F-scale: EF1
Reported by: NWS Storm Survey

A brief tornado was observed just northeast of Lake Arcdia. The tornado damaged a power pole along Post Road just north of State Highway 66, otherwise no known damage occurred.

Tornado in LINCOLN, OKLAHOMA
From 19-MAY-13 18:17:00 to 19-MAY-13 18:20:00 (CST-6)
Location: PRAGUE
Tornado F-scale: EF0
Reported by: NWS Storm Survey

A tornado touched down about 3.5 miles northeast of Prague and caused tree damage before moving into Okfuskee County in the Tulsa County Warning Area (see Storm Data for eastern Oklahoma for information about the continuation of this tornado).

Tornado in OKLAHOMA, OKLAHOMA
From 19-MAY-13 15:41:00 to 19-MAY-13 15:54:00 (CST-6)
Location: LUTHER
Tornado F-scale: EF2
Reported by: NWS Storm Survey

A tornado touched down just south of Triple XXX Road and Coffee Creek Road to the northwest of Luther and began to move east-northeast. The tornado began producing EF2 damage soon after crossing Luther Road where an outbuilding was destroyed. At least two mobile homes were destroyed as the tornado continued to the east-northeast. The tornado crossed Waterloo Road and moved into Logan County.

Hail in ALFALFA, OKLAHOMA
From 19-MAY-13 14:45:00 to 19-MAY-13 14:45:00 (CST-6)
Location: CHEROKEE
Magnitude: 1.00 
Reported by: Law Enforcement

Hail in OKLAHOMA, OKLAHOMA
From 19-MAY-13 14:47:00 to 19-MAY-13 14:47:00 (CST-6)
Location: EDMOND
Magnitude: 1.00 
Reported by: Trained Spotter

Reported at McArthur and Coffee Creek Rd.

Tornado in LOGAN, OKLAHOMA
From 19-MAY-13 15:54:00 to 19-MAY-13 15:56:00 (CST-6)
Location: MERIDIAN
Tornado F-scale: EF2
Reported by: NWS Storm Survey

Tornado continued tracking ENE, producing tree damage as it clipped the extreme southeast corner of Logan County before moving into Lincoln County.

Tornado in POTTAWATOMIE, OKLAHOMA
From 19-MAY-13 17:40:00 to 19-MAY-13 17:43:00 (CST-6)
Location: DALE
Tornado F-scale: EF0
Reported by: NWS Storm Survey

An anticyclonic tornado was observed in RaXPol mobile radar data and an area of tree damage was observed by the storm survey team.

Hail in CLEVELAND, OKLAHOMA
From 19-MAY-13 16:40:00 to 19-MAY-13 16:40:00 (CST-6)
Location: NORMAN
Magnitude: 2.00 
Reported by: NWS Employee

Hail in OKLAHOMA, OKLAHOMA
From 19-MAY-13 15:01:00 to 19-MAY-13 15:01:00 (CST-6)
Location: EDMOND
Magnitude: 1.50 
Reported by: Trained Spotter

Hail in GRANT, OKLAHOMA
From 19-MAY-13 15:05:00 to 19-MAY-13 15:05:00 (CST-6)
Location: WAKITA
Magnitude: 1.75 
Reported by: Law Enforcement

Nescatunga near Highway 11.

Hail in OKLAHOMA, OKLAHOMA
From 19-MAY-13 15:15:00 to 19-MAY-13 15:15:00 (CST-6)
Location: EDMOND
Magnitude: 1.25 
Reported by: Public

Hail in OKLAHOMA, OKLAHOMA
From 19-MAY-13 15:17:00 to 19-MAY-13 15:17:00 (CST-6)
Location: ARCADIA LAKE
Magnitude: 1.00 
Reported by: Emergency Manager

At I-35 and Seward.

Hail in OKLAHOMA, OKLAHOMA
From 19-MAY-13 15:18:00 to 19-MAY-13 15:18:00 (CST-6)
Location: EDMOND
Magnitude: 1.50 
Reported by: Amateur Radio

At 178th and Western.

Hail in OKLAHOMA, OKLAHOMA
From 19-MAY-13 15:37:00 to 19-MAY-13 15:37:00 (CST-6)
Location: ARCADIA LAKE
Magnitude: 2.60 
Reported by: Public

Hail in OKLAHOMA, OKLAHOMA
From 19-MAY-13 15:51:00 to 19-MAY-13 15:51:00 (CST-6)
Location: LUTHER
Magnitude: 2.75 
Reported by: Public

Hail in GRADY, OKLAHOMA
From 19-MAY-13 15:55:00 to 19-MAY-13 15:55:00 (CST-6)
Location: MIDDLEBERG
Magnitude: 2.00 
Reported by: Public

Hail in CLEVELAND, OKLAHOMA
From 19-MAY-13 16:02:00 to 19-MAY-13 16:02:00 (CST-6)
Location: (OUN)NORMAN WESTHEIMER ARPT
Magnitude: 1.25 
Reported by: Public

At 36th Nw and Rock Creek Rd.

Hail in MCCLAIN, OKLAHOMA
From 19-MAY-13 16:05:00 to 19-MAY-13 16:05:00 (CST-6)
Location: NEWCASTLE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in MCCLAIN, OKLAHOMA
From 19-MAY-13 16:10:00 to 19-MAY-13 16:10:00 (CST-6)
Location: BLANCHARD
Magnitude: 1.25 
Reported by: COOP Observer

At County Line Rd. and Highway 62.

Hail in CLEVELAND, OKLAHOMA
From 19-MAY-13 16:25:00 to 19-MAY-13 16:25:00 (CST-6)
Location: MOORE
Magnitude: 1.50 
Reported by: Storm Chaser

Hail in CLEVELAND, OKLAHOMA
From 19-MAY-13 16:30:00 to 19-MAY-13 16:30:00 (CST-6)
Location: NORMAN
Magnitude: 3.00 
Reported by: Public

Tea cup size hail reported at 12th and Tecumseh. Also golfball size reported at 36th and Tecumseh, and 1.5 inch hail reported at Westheimer Airport.

Hail in MCCLAIN, OKLAHOMA
From 19-MAY-13 16:39:00 to 19-MAY-13 16:39:00 (CST-6)
Location: NEWCASTLE
Magnitude: 1.75 
Reported by: NWS Employee