A tornado outbreak occurred over parts of northern and central Oklahoma during the day on the 24th, with violent tornadoes devastating several communities. By the end of the day, one EF-5, two EF-4, and two EF-3 tornadoes destroyed buildings, ripped up trees and power poles, and unfortunately, resulted in 11 deaths. The day began with a strong upper level trough ejecting out of the southwest United States. The trough took on a negative tilt as it approached the southern Plains. A strong jet stream was located at both the middle and upper levels rotating around the upper trough. At the surface, a low pressure strengthened rapidly over northwest Oklahoma, keeping the low-level flow of warm, moist air to flow east of a dry line that had moved into western Oklahoma. Thunderstorms developed by early afternoon over western Oklahoma, and quickly became supercellular as they moved northeast. Strong low-level rotation developed early, with the first tornado occurring over Blaine county, and moved northeast into Major county. Another supercell rapidly gained low-level rotation as it moved from Caddo into Canadian County. This tornado became the strongest of them all as it moved north of El Reno, west of Piedmont, and to south of Guthrie in Logan county. Nine people died as a result of this tornado. Two more powerful supercells developed over Grady county, and they moved northeast into McClain and Cleveland counties. Finally, the final tornado occurred east of Norman into Pottawatomie county. The timing of this outbreak could not have come at a worse time, as rush hour was just unfolding as the tornadoes neared the Oklahoma City metro area.

Tornado in BLAINE, OKLAHOMA
From 24-MAY-11 14:21:00 to 24-MAY-11 14:34:00 (CST-6)
Location: CANTON LAKE DAM
Tornado F-scale: EF3
Reported by: NWS Storm Survey

This tornado is labeled A1 (Segment #2 of the Canton Lake tornado). The tornado moved northeast toward Canton Lake, which is where more significant damage occurred. Near the lake, on both sides where the tornado crossed, significant tree damage occurred. Numerous trailer homes were knocked over or destroyed. On the south side of the lake, two injuries occurred at the Canadian Campground. Several other campers took shelter in a concrete bathhouse. Although the bathhouse sustained damage, no injuries were reported. Other concrete structures (benches, pick-nick tables, etc.) were knocked over or shattered. On the other side of the  lake, southwest of Longdale, significant damage continued to more structures and trees. The tornado continued to move almost due north into Major County. Monetary damage estimates were not available.

Thunderstorm Wind in JEFFERSON, OKLAHOMA
From 24-MAY-11 17:20:00 to 24-MAY-11 17:20:00 (CST-6)
Location: RINGLING
Magnitude: 68.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in KIOWA, OKLAHOMA
From 24-MAY-11 14:15:00 to 24-MAY-11 14:15:00 (CST-6)
Location: MOUNTAIN VIEW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tornado in MCCLAIN, OKLAHOMA
From 24-MAY-11 16:45:00 to 24-MAY-11 16:46:00 (CST-6)
Location: NEWCASTLE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Tornado C2 (Newcastle tornado.) An NWS employee observed this tornado in the southwestern portion of Newcastle while the primary Chickasha-Blanchard-Newcastle tornado was located to the south or southwest. This tornado only produced light damage.

Thunderstorm Wind in KAY, OKLAHOMA
From 24-MAY-11 16:30:00 to 24-MAY-11 16:30:00 (CST-6)
Location: NEWKIRK
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in OKLAHOMA, OKLAHOMA
From 24-MAY-11 17:23:00 to 24-MAY-11 17:23:00 (CST-6)
Location: (TIK)TINKER AFB
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Thunderstorm Wind in LOVE, OKLAHOMA
From 24-MAY-11 17:15:00 to 24-MAY-11 17:15:00 (CST-6)
Location: MARIETTA
Magnitude: 56.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Emergency Manager

A large tree was uprooted. Monetary damages were estimated.

Hail in OKLAHOMA, OKLAHOMA
From 24-MAY-11 17:05:00 to 24-MAY-11 17:05:00 (CST-6)
Location: DEL CITY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in LOGAN, OKLAHOMA
From 24-MAY-11 16:30:00 to 24-MAY-11 16:30:00 (CST-6)
Location: LANGSTON
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 24-MAY-11 17:31:00 to 24-MAY-11 17:31:00 (CST-6)
Location: (TIK)TINKER AFB
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Hail in CLEVELAND, OKLAHOMA
From 24-MAY-11 17:00:00 to 24-MAY-11 17:00:00 (CST-6)
Location: NORMAN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tornado in MCCLAIN, OKLAHOMA
From 24-MAY-11 17:02:00 to 24-MAY-11 17:03:00 (CST-6)
Location: GOLDSBY
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Tornado D2 (Goldsby tornado.)
Storm chasers observed a tornado southeast of Goldsby in a parallel track to the east-southeast of the primary Washington-Goldsby tornado.  An NWS storm survey team observed barn damage associated with this tornado.

Hail in GARVIN, OKLAHOMA
From 24-MAY-11 17:05:00 to 24-MAY-11 17:05:00 (CST-6)
Location: ELMORE CITY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MCCLAIN, OKLAHOMA
From 24-MAY-11 16:37:00 to 24-MAY-11 16:37:00 (CST-6)
Location: NEWCASTLE
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in CARTER, OKLAHOMA
From 24-MAY-11 17:35:00 to 24-MAY-11 17:35:00 (CST-6)
Location: HEALDTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in CLEVELAND, OKLAHOMA
From 24-MAY-11 17:00:00 to 24-MAY-11 17:00:00 (CST-6)
Location: NORMAN
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CLEVELAND, OKLAHOMA
From 24-MAY-11 16:50:00 to 24-MAY-11 16:50:00 (CST-6)
Location: NORMAN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in CLEVELAND, OKLAHOMA
From 24-MAY-11 17:51:00 to 24-MAY-11 17:51:00 (CST-6)
Location: MOORE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

The hail fell at the intersection of Main Street and Wyndemere Lakes Drive.

Hail in KIOWA, OKLAHOMA
From 24-MAY-11 13:29:00 to 24-MAY-11 13:30:00 (CST-6)
Location: HOBART
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Tornado in CANADIAN, OKLAHOMA
From 24-MAY-11 14:50:00 to 24-MAY-11 15:55:00 (CST-6)
Location: CALUMET
Tornado F-scale: EF5
Reported by: NWS Storm Survey

This tornado is labeled Tornado B2 (Segment #1 of the Calumet-El Reno-Piedmont-Guthrie tornado). This tornado began very close to the Caddo/Canadian county border and quickly became a strong/violent tornado. The tornado destroyed numerous trees, many of them were debarked, before crossing Interstate 40. Three people died in vehicles near the I-40 Calumet exit, and two other fatalities occurred just northeast of that location. Cars were thrown thousands of feet off the roadways. It is believed that the tornado reached its maximum intensity just after crossing I-40, and it was here that a mobile radar measured winds of greater than 210 mph just off the surface. The El Reno Oklahoma Mesonet station (5 miles west) measured wind gusts of 131 and 151 mph. From this location, the tornado continued northeast, narrowly missing the town of Piedmont. Widespread EF-3, occasional EF-4 damage occurred between El Reno and Piedmont. More widespread EF-4 damage was seen west and north of Piedmont. Especially hard hit was the Falcon Lake neighborhood, near the Kingfisher county border. Two children were killed at this location. The tornado continued into southeastern Kingfisher County. Monetary damage estimates were not available at this time, but were probably going to be well in the tens of millions.

Hail in DEWEY, OKLAHOMA
From 24-MAY-11 14:33:00 to 24-MAY-11 14:33:00 (CST-6)
Location: FAY
Magnitude: 3.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MCCLAIN, OKLAHOMA
From 24-MAY-11 16:50:00 to 24-MAY-11 16:50:00 (CST-6)
Location: WASHINGTON
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Thunderstorm Wind in STEPHENS, OKLAHOMA
From 24-MAY-11 16:00:00 to 24-MAY-11 16:00:00 (CST-6)
Location: MARLOW
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in CLEVELAND, OKLAHOMA
From 24-MAY-11 17:00:00 to 24-MAY-11 17:00:00 (CST-6)
Location: (OUN)NORMAN WESTHEIMER ARPT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in CLEVELAND, OKLAHOMA
From 24-MAY-11 16:50:00 to 24-MAY-11 16:50:00 (CST-6)
Location: NOBLE
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in CARTER, OKLAHOMA
From 24-MAY-11 18:01:00 to 24-MAY-11 18:01:00 (CST-6)
Location: HEALDTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 24-MAY-11 17:00:00 to 24-MAY-11 17:00:00 (CST-6)
Location: LUTHER
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

A large tree and metal awning were blown down. Monetary damages were estimated.

Hail in COMANCHE, OKLAHOMA
From 24-MAY-11 15:16:00 to 24-MAY-11 15:16:00 (CST-6)
Location: LAWTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

KWSO-TV reported golf-ball size hail falling on the west side of Lawton.

Hail in COMANCHE, OKLAHOMA
From 24-MAY-11 15:31:00 to 24-MAY-11 15:31:00 (CST-6)
Location: LAKE ELLSWORTH DAM
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in CLEVELAND, OKLAHOMA
From 24-MAY-11 17:00:00 to 24-MAY-11 17:00:00 (CST-6)
Location: NOBLE
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in LOVE, OKLAHOMA
From 24-MAY-11 17:25:00 to 24-MAY-11 17:25:00 (CST-6)
Location: MARIETTA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in CLEVELAND, OKLAHOMA
From 24-MAY-11 17:05:00 to 24-MAY-11 17:15:00 (CST-6)
Location: NORMAN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

The hail was reported near Highway 9 and 60th Streets. Golf-ball size was also reported near Rock Creek Road and 60th Street.

Thunderstorm Wind in LOVE, OKLAHOMA
From 24-MAY-11 18:08:00 to 24-MAY-11 18:08:00 (CST-6)
Location: RUBOTTOM
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

No damage occurred with the wind gust.

Thunderstorm Wind in LOGAN, OKLAHOMA
From 24-MAY-11 16:55:00 to 24-MAY-11 16:55:00 (CST-6)
Location: COYLE
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in OKLAHOMA, OKLAHOMA
From 24-MAY-11 15:43:00 to 24-MAY-11 15:43:00 (CST-6)
Location: MIDWEST CITY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in MARSHALL, OKLAHOMA
From 24-MAY-11 19:02:00 to 24-MAY-11 19:02:00 (CST-6)
Location: MADILL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

No damage occurred with the wind gust.

Thunderstorm Wind in KAY, OKLAHOMA
From 24-MAY-11 16:02:00 to 24-MAY-11 16:02:00 (CST-6)
Location: (PNC)PONCA CITY ARPT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Hail in CLEVELAND, OKLAHOMA
From 24-MAY-11 17:07:00 to 24-MAY-11 17:07:00 (CST-6)
Location: NORMAN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

The hail fell at the National Weather Center.

Hail in LOVE, OKLAHOMA
From 24-MAY-11 17:25:00 to 24-MAY-11 17:25:00 (CST-6)
Location: MARIETTA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OKLAHOMA, OKLAHOMA
From 24-MAY-11 17:14:00 to 24-MAY-11 17:14:00 (CST-6)
Location: DEL CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in PONTOTOC, OKLAHOMA
From 24-MAY-11 19:50:00 to 24-MAY-11 19:50:00 (CST-6)
Location: ADA
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in JEFFERSON, OKLAHOMA
From 24-MAY-11 17:20:00 to 24-MAY-11 17:20:00 (CST-6)
Location: RINGLING
Magnitude: 80.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A number of homes in Ringling suffered roof damage, and widespread tree and outbuilding damage occurred.

Hail in PONTOTOC, OKLAHOMA
From 24-MAY-11 20:01:00 to 24-MAY-11 20:01:00 (CST-6)
Location: ADA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CADDO, OKLAHOMA
From 24-MAY-11 14:29:00 to 24-MAY-11 14:29:00 (CST-6)
Location: EAKLY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in GRADY, OKLAHOMA
From 24-MAY-11 16:26:00 to 24-MAY-11 16:35:00 (CST-6)
Location: BRADLEY
Tornado F-scale: EF3
Reported by: NWS Storm Survey

This tornado is labeled D1 (Segment #1 of the Washington-Goldsby tornado). This tornado developed west of Bradley, downing tree limbs as it moved northeast. The tornado began to increase in intensity, producing EF-3 damage, as it approached McClain county. Although the damage was confined to trees, the severity of the damage became more intense. Trees were snapped at the bases, or debarked altogether. The tornado was several hundred yards wide as it neared the county line. Luckily, very few structures were in the path. This tornado continued into McClain County. Monetary damage estimates were not available.

Tornado in MCCLAIN, OKLAHOMA
From 24-MAY-11 16:38:00 to 24-MAY-11 16:53:00 (CST-6)
Location: BLANCHARD
Tornado F-scale: EF4
Reported by: NWS Storm Survey

This tornado is labeled C1 (Segment #2 of the Chickasha-Blanchard-Newcastle tornado). Significant damage continued as the violent tornado moved over the McClain county border. This may have been the strongest portion of this tornado, with wind speeds near 200 mph. Well-built homes were destroyed, with some cleaned off of their foundation. A concrete dome home was severely damage, mainly by the flying debris. Trees were debarked or destroyed. Very little was left standing for the first few miles into McClain county. Fairly consistent EF-3, with brief periods of EF-4 damage occurred as the tornado neared/crossed Highway 9, near the Highway 76 junction. The tornado began to weaken as it moved toward the Cleveland county border, with mainly trees and power poles/lines snapped. The tornado continued into Cleveland County. Monetary damage estimates were not available.

Tornado in PAYNE, OKLAHOMA
From 24-MAY-11 16:50:00 to 24-MAY-11 17:05:00 (CST-6)
Location: LAKE CARL BLACKWELL DAM
Tornado F-scale: EF2
Reported by: NWS Storm Survey

This tornado was labeled B4 (Stillwater tornado). This tornado developed with mainly tree and power pole/line damage. The tree damage was significant, with several homes impacted as the tornado traveled northeast. Significant roof and siding damage occurred to the homes, with several barns and outbuildings sustaining significant damage or were destroyed altogether. EF-2 damage continued as the tornado moved south of Stillwater, with additional structures sustaining roof damage. A couple of the homes also had collapsed chimneys. The damage lessened in severity over the latter half of the tornado path, with mostly tree damage and minor structural damage. Monetary damage estimates were not available.

Tornado in CADDO, OKLAHOMA
From 24-MAY-11 14:31:00 to 24-MAY-11 14:46:00 (CST-6)
Location: LOOKEBA
Tornado F-scale: EF3
Reported by: NWS Storm Survey

This tornado is labeled Tornado B1 (Lookeba Tornado). This tornado damaged/destroyed several structures and mangled numerous many trees and power poles.  The tornado dissipated near the Canadian County line, minutes before the storm produced another tornado in Canadian County that became the EF5 Calumet-El Reno-Piedmont-Guthrie tornado. Monetary damage estimates were not available.

Tornado in MCCLAIN, OKLAHOMA
From 24-MAY-11 16:35:00 to 24-MAY-11 17:05:00 (CST-6)
Location: CRINER
Tornado F-scale: EF4
Reported by: NWS Storm Survey

This tornado is labeled D1 (Segment #2 of the Washington-Goldsby tornado). Widespread tree damage and ground scouring was ongoing as the tornado crossed into McClain county. As the tornado crossed Highway 76, even more intense damage occurred. EF-4 damage was surveyed at several locations. Several homes were reduced to a pile of rubble, or were wiped clean off of their foundations. Automobiles were mangled and almost unrecognizable. The tornado weakened and narrowed as it crossed CR 410. Even though the tornado had weakened, EF-2 to EF-3 damage was still occurring as it approached Highway 39. The tornado increased in intensity once again near the Highway, with EF-4 damage surveyed for the 2nd time. Well constructed homes were destroyed, with several wiped clean off of their foundations. This also began a longer streak of higher end damage, with EF-3 to EF-4 damage occurring until it crossed Highway 74B, west of High Avenue. Equally devastating destruction occurred over the areas of EF-4 damage. The tornado lifted west of Goldsby with still EF-3 damage occurring prior to lifting. It should be noted that this tornado had estimated winds up to 200 mph at times, falling just short of the damage indicator for an EF-5 tornado. Monetary damage estimates were not available.

Thunderstorm Wind in CANADIAN, OKLAHOMA
From 24-MAY-11 15:18:00 to 24-MAY-11 15:22:00 (CST-6)
Location: EL RENO
Magnitude: 131.00 MG
Reported by: Mesonet

The highest wind gust ever recorded at an Oklahoma Mesonet site was measured near El Reno, as an EF-5 tornado tore a path through Canadian county. The wind speed increased from 61 mph at 1618 CDT, to 66 mph at 1619 CDT, to 131 mph at 1620 CDT, to 151 at 1621 CDT, and then to 91 mph at 1622 CDT. The tornado caused considerable damage to the area surrounding the Mesonet as it moved northeast.

Tornado in JOHNSTON, OKLAHOMA
From 24-MAY-11 18:30:00 to 24-MAY-11 18:45:00 (CST-6)
Location: RAVIA
Tornado F-scale: EF1
Reported by: Emergency Manager

This tornado is labeled E1 (the Ravia-Tishomingo tornado). This tornado began just north of Ravia and traveled east-northeast toward Tishomingo. Widespread tree damage occurred as, luckily, few structures were in the path. Four homes sustained minor roof damage, with another two homes damage by the falling trees. A 50-foot grain silo also lost its roof. The tornado lifted a couple of miles north of Tishomingo. No injuries were reported as a result of the tornado. Monetary damage estimates were not available.
.

Tornado in DEWEY, OKLAHOMA
From 24-MAY-11 14:20:00 to 24-MAY-11 14:21:00 (CST-6)
Location: HUCMAC
Tornado F-scale: EF1
Reported by: NWS Storm Survey

This tornado is labeled A1 (Segment #1 of the Canton Lake tornado). This large tornado began west of Canton and moved north-northeast toward (and eventually over) Canton Lake. The damage was confined to trees and power poles/lines during the early stages of the tornado. However, more significant damage occurred as the tornado moved into Blaine County. Monetary damage estimates were not available.

Tornado in MAJOR, OKLAHOMA
From 24-MAY-11 14:47:00 to 24-MAY-11 14:51:00 (CST-6)
Location: FAIRVIEW
Tornado F-scale: EF0
Reported by: Storm Chaser

This tornado is labeled A2 (SW of Fairview brief tornado). A number of storm chasers observed this tornado to the southwest of Fairview. No known damage occurred.

Tornado in MAJOR, OKLAHOMA
From 24-MAY-11 14:34:00 to 24-MAY-11 14:44:00 (CST-6)
Location: DANE
Tornado F-scale: EF3
Reported by: NWS Storm Survey

This tornado is labeled A1 (Segment #3 of the Canton Lake tornado). The large, violent tornado continued north into Major county. The tornado hit homesteads and barns, severely damaging most structures, and splintering trees and power poles. One of the farmsteads received on the upper end of EF-3 damage, with the house completely collapsing and the trees on the property debarked and snapped. The tornado continued near Cedar Springs, damaging the church roof, and severely damaging a mobile home and several buildings at a farmstead. The tornado finally lifted southwest of Fairview. Monetary damage estimates were not available.

Tornado in CANADIAN, OKLAHOMA
From 24-MAY-11 15:37:00 to 24-MAY-11 15:39:00 (CST-6)
Location: RICHLAND
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Tornado B3 (Richland tornado.)  A Storm Prediction Center employee observed a satellite tornado rotating around the primary Calumet-El Reno-Piedmont-Guthrie tornado for a couple of minutes to the northwest of Richland.  This tornado produced no known damage that was distinguished from the primary tornado.

Thunderstorm Wind in CARTER, OKLAHOMA
From 24-MAY-11 17:40:00 to 24-MAY-11 17:40:00 (CST-6)
Location: LONE GROVE
Magnitude: 61.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The roof was blown off of a trailer home. Monetary damages were estimated.

Tornado in POTTAWATOMIE, OKLAHOMA
From 24-MAY-11 17:36:00 to 24-MAY-11 17:39:00 (CST-6)
Location: DALE
Tornado F-scale: EF2
Reported by: NWS Storm Survey

Tornado D3 (McLoud tornado.)  A tornado developed west-southwest of the intersection of Fishmarket Road and Memorial Road to the south-southwest of McLoud.  The tornado moved east-northeast where a telephone company building lost it's roof, and a number of sheds were damaged and causing tree damage as it crossed the intersection and Fishmarket and Memorial roads.  Extensive tree damage continued northeast of this intersection, at least one home suffered the destruction of an attached garage and a few homes suffered roof and window damage.  The tornado turned north-northeast crossing Interstate 40 near the Walker Road bridge where it struck and semi truck, lifting and destroying the trailer, lofting the pieces to the north.  The tornado dissipated soon after crossing Interstate 40.  Although the tornado was very narrow, the rotational velocity of the tornado was observed to be very strong.  Monetary damage estimates were not available.

Tornado in LOGAN, OKLAHOMA
From 24-MAY-11 15:59:00 to 24-MAY-11 16:35:00 (CST-6)
Location: NAVINA
Tornado F-scale: EF3
Reported by: NWS Storm Survey

This tornado is labeled B2 (Segment #3 of the Calumet-El Reno-Piedmont-Guthrie tornado). The tornado moved into Logan County and resulted in two additional fatalities (both of whom were outside when the tornado struck) near Cashion. The tornado destroyed several manufactured homes (both double- and single-wide) after entering Logan county. Large high-transmission line tresses collapsed. Trees were debarked with only stumps remaining. Several buildings had most of their exterior walls collapse, with only the inner walls remaining. EF-2 to occasionally EF-3 damage occurred as the tornado neared Guthrie. Luckily, most of the town of Guthrie was spared to the tornado as it moved west and then north of the center of the city. Finally, the tornado dissipated northeast of Guthrie with some minor tree damage. After it was all said and done, the tornado continued for 63 miles, and lasted around an hour and 45 minutes. Monetary damage estimates were not available.

Tornado in GRADY, OKLAHOMA
From 24-MAY-11 16:06:00 to 24-MAY-11 16:38:00 (CST-6)
Location: NORGE
Tornado F-scale: EF4
Reported by: NWS Storm Survey

This tornado is labeled C1 (Segment #1 of the Chickasha-Blanchard-Newcastle tornado). The tornado formed on the south side of Chickasha, quickly doing EF-2 damage. Mobile homes were damaged and destroyed, trees were uprooted/destroyed, outbuildings were destroyed, and many buildings lost significant portions of their roofs. One fatality occurred as a mobile home was destroyed in the south portion of Chickasha. As the tornado moved northeast of Chickasha, it gained significant strength, with several areas receiving EF-4 damage. Well-built homes were destroyed. Trees were debarked with only stumps remaining. Cars were thrown hundreds of feet. Almost continuous EF-3/occasional EF-4 damage occurred northeast until it crossed into McClain county 1.5 miles south of Highway 9. The tornado was probably at its strongest as it neared/crossed the McClain county line. Wind speeds there were estimated near 200 mph. Monetary damage estimates were not available.

Tornado in CLEVELAND, OKLAHOMA
From 24-MAY-11 16:53:00 to 24-MAY-11 17:02:00 (CST-6)
Location: MOORE
Tornado F-scale: EF0
Reported by: NWS Storm Survey

This tornado is labeled C1 (Segment #3 of the Chickasha-Blanchard-Newcastle tornado). Only minor tree/power pole/power line damage occurred inside the Cleveland county line. A few barns and outbuilding also sustained minor damage east of I-44. The tornado dissipated just north of the South Canadian River. After it was finally over, the tornado continued for just under an hour, with a length of around 32 miles. Peak wind speeds were estimated just under 200 mph. Monetary damage estimates were not available.
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Tornado in KINGFISHER, OKLAHOMA
From 24-MAY-11 15:55:00 to 24-MAY-11 15:59:00 (CST-6)
Location: CASHION
Tornado F-scale: EF3
Reported by: NWS Storm Survey

This tornado is labeled B2 (Segment #2 of Calumet-El Reno-Piedmont-Guthrie tornado). The tornado entered far southeast Kingfisher county before moving into Logan county. However, EF-3 damage occurred just over the Kingfisher county border, debarking trees and significantly damaging buildings. As the tornado continued northeast, the damage was mainly considered EF-2, with damage to mostly outbuildings and trees. The tornado continued into Logan County. Monetary damage estimates were not available.