A strong low pressure trough translated from the southwestern United States into the Southern Plains on November 30th and December 1st. Warm and moist air had spread northward into eastern Oklahoma ahead of this system. Atmospheric instability became moderately strong during the afternoon and evening hours to the east of a cold front that was over western Oklahoma and south of a stationary front that was located across northern Oklahoma into southern Missouri. As the strong storm system moved into the Southern Plains on the 30th, wind fields throughout the atmosphere increased substantially, which resulted in very strong deep-layer and low-level wind shear across eastern Oklahoma during the evening and overnight hours.
Thunderstorms developed during the evening hours of the 30th across central and eastern Oklahoma. Moderately strong atmospheric instability across the area combined with very strong wind shear to produce organized severe thunderstorms, including supercells. Supercell thunderstorms produced several tornadoes and damaging thunderstorm wind gusts across eastern Oklahoma. One of the tornadoes was strong and exceptionally long-tracked, affecting Sequoyah, Cherokee, Adair, and Delaware Counties. A squall line moved rapidly across the area ahead of the surging cold front and produced additional tornadoes and damaging wind gusts.

Tornado in MUSKOGEE, OKLAHOMA
From 30-NOV-18 21:28:00 to 30-NOV-18 21:30:00 (CST-6)
Location: WEBBERS FALLS SHEFFI
Tornado F-scale: EF0
Property damage: 40.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the first segment of a two segment tornado. This tornado developed in the Arkansas River bottoms of far southeastern Muskogee County, where several center pivot irrigation systems were destroyed and barns were damaged. The tornado crossed the Arkansas River into Sequoyah County. Based on this damage, maximum estimated wind in this segment of the tornado was 80 to 85 mph.

Tornado in SEQUOYAH, OKLAHOMA
From 30-NOV-18 21:30:00 to 30-NOV-18 21:37:00 (CST-6)
Location: GORE
Tornado F-scale: EF1
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the second segment of a two segment tornado. The tornado crossed the Arkansas River, moving into Sequoyah County, and uprooted trees as it crossed I-40. It continued to move northeast, crossing Highway 64 to the east of Gore where trees were snapped and a home was damaged. The tornado then dissipated over open country south of the E1000 Road. Based on this damage, maximum estimated wind in this segment of the tornado was 95 to 105 mph.

Tornado in OSAGE, OKLAHOMA
From 30-NOV-18 21:36:00 to 30-NOV-18 21:38:00 (CST-6)
Location: SKIATOOK ARPT
Tornado F-scale: EF0
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado developed south of W 113th Street N where a barn was damaged. The tornado moved northeast damaging trees on N 36th West Ave, and then severely damaging two mobile homes, snapping large tree limbs, and damaging the roof of a home along Park Farm Lane. The tornado dissipated west of the Tulsa County line. Based on this damage, maximum estimated wind in the tornado was 70 to 80 mph.

Thunderstorm Wind in TULSA, OKLAHOMA
From 30-NOV-18 21:36:00 to 30-NOV-18 21:37:00 (CST-6)
Location: SPERRY
Magnitude: 65.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Strong thunderstorm wind damaged the roofs of several homes, damaged the roof of a church, damaged a barn, and snapped large tree limbs.

Thunderstorm Wind in SEQUOYAH, OKLAHOMA
From 30-NOV-18 21:40:00 to 30-NOV-18 21:40:00 (CST-6)
Location: BOX
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Strong thunderstorm wind damaged a barn and snapped large tree limbs.

Tornado in SEQUOYAH, OKLAHOMA
From 30-NOV-18 21:43:00 to 30-NOV-18 21:47:00 (CST-6)
Location: BLACKGUM
Tornado F-scale: EF1
Property damage: 150.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the first segment of a six segment tornado. This long-track tornado developed near Blackgum where homes were damaged, barns and outbuildings were destroyed, and trees were snapped. The tornado moved north-northeast, snapping and uprooting numerous trees as it approached an inlet of Lake Tenkiller, and crossed into Cherokee County. Based on this damage, maximum estimated wind in this segment of the tornado was 100 to 110 mph.

Tornado in ADAIR, OKLAHOMA
From 30-NOV-18 22:13:00 to 30-NOV-18 22:14:00 (CST-6)
Location: TITANIC
Tornado F-scale: EF1
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the third segment of a six segment tornado. The tornado moved into Adair County southwest of Wauhillau and moved north-northeast across Highway 51 and the E768 Road. A couple homes were damaged, outbuildings were damaged, and trees were uprooted. The tornado moved back into Cherokee County northwest of Wauhillau. Based on this damage, maximum estimated wind in this segment of the tornado was 90 to 100 mph.

Tornado in CHEROKEE, OKLAHOMA
From 30-NOV-18 22:14:00 to 30-NOV-18 22:15:00 (CST-6)
Location: ELDON
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the fourth segment of a six segment tornado. In this short segment of the tornado in Cherokee County, the tornado uprooted trees, and then moved back into Adair County south-southwest of Proctor. Based on this damage, maximum estimated wind in this segment of the tornado was 90 to 100 mph.

Thunderstorm Wind in TULSA, OKLAHOMA
From 30-NOV-18 21:26:00 to 30-NOV-18 21:26:00 (CST-6)
Location: SAND SPGS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm wind gusts were estimated to 60 mph.

Tornado in CHEROKEE, OKLAHOMA
From 30-NOV-18 21:47:00 to 30-NOV-18 22:13:00 (CST-6)
Location: COOKSON
Tornado F-scale: EF2
Property damage: 1.50M
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the second segment of a six segment tornado. This long-track tornado moved into Cherokee County near an inlet of Lake Tenkiller, where boat docks, lake homes, boats, and outbuildings were destroyed, and trees and power poles were snapped. The tornado moved north-northeast along the eastern shores of Lake Tenkiller, passing through Cookson and Cherokee Landing State Park. Numerous homes were damaged or destroyed, numerous boat docks were destroyed, many boats were destroyed, outbuildings were destroyed, many trees and power poles were snapped, and hangars at the airport west of Cookson were destroyed. From Lake Tenkiller, the tornado continued to move north-northeast across less populated areas of southeastern Cherokee County where a few homes were damaged, outbuildings were destroyed, and trees were snapped or uprooted. The tornado moved into Adair County to the east-northeast of Welling. Based on this damage, maximum estimated wind in this segment of the tornado was 115 to 125 mph.

Thunderstorm Wind in SEQUOYAH, OKLAHOMA
From 30-NOV-18 21:48:00 to 30-NOV-18 21:48:00 (CST-6)
Location: VIAN
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong thunderstorm wind blew down power lines on Highway 64 west of Vian.

Thunderstorm Wind in PUSHMATAHA, OKLAHOMA
From 30-NOV-18 22:00:00 to 30-NOV-18 22:00:00 (CST-6)
Location: STANLEY
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong thunderstorm wind blew down trees and power lines southwest of Clayton, resulting in a temporary road closure.

Tornado in ADAIR, OKLAHOMA
From 30-NOV-18 22:15:00 to 30-NOV-18 22:39:00 (CST-6)
Location: TITANIC
Tornado F-scale: EF2
Property damage: 250.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the fifth segment of a six segment tornado. This long-track tornado moved back into Adair County south-southwest of Proctor and moved north-northeast snapping and uprooting trees on the 754 Road. The tornado crossed Highway 62 near Proctor where homes were severely damaged, large outbuildings were destroyed, farm equipment was thrown large distances, and many trees were snapped and uprooted. It snapped and uprooted numerous trees and destroyed barns between Highway 62 and Chewey Road. Some of the tree damage in this heavily-wooded, rural area was extensive. The tornado continued to move north-northeast across heavily wooded terrain and then crossed River Road where numerous trees were uprooted, and finally into Delaware County near Dripping Springs. Based on this damage, maximum estimated wind in this segment of the tornado was 110 to 120 mph.

Tornado in DELAWARE, OKLAHOMA
From 30-NOV-18 22:39:00 to 30-NOV-18 22:46:00 (CST-6)
Location: FLINT
Tornado F-scale: EF1
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the final segment of a six segment tornado. This long-track tornado moved into Delaware County southwest of Dripping Springs and Natural Falls State Park, where trees were uprooted. The tornado tracked north-northeast damaging a few homes, destroying a couple outbuildings, and snapping and uprooting trees as it crossed Highway 412. It dissipated southeast of Colcord. Based on this damage, maximum estimated wind in this segment of the tornado was 95 to 105 mph.

Thunderstorm Wind in HASKELL, OKLAHOMA
From 30-NOV-18 22:30:00 to 30-NOV-18 22:30:00 (CST-6)
Location: WHITEFIELD
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet station near Stigler measured 64 mph thunderstorm wind gusts.

Thunderstorm Wind in SEQUOYAH, OKLAHOMA
From 30-NOV-18 22:49:00 to 30-NOV-18 22:49:00 (CST-6)
Location: SALLISAW ARPT
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet station near Sallisaw measured 67 mph thunderstorm wind gusts.

Thunderstorm Wind in LE FLORE, OKLAHOMA
From 30-NOV-18 23:01:00 to 30-NOV-18 23:01:00 (CST-6)
Location: POTEAU
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Strong thunderstorm wind peeled off portions of the roof of a mobile home.

Thunderstorm Wind in DELAWARE, OKLAHOMA
From 30-NOV-18 23:27:00 to 30-NOV-18 23:27:00 (CST-6)
Location: GROVE ARPT
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm wind gusts were measured to 62 mph near the intersection of the 360 Road and the 690 Road.

Thunderstorm Wind in LE FLORE, OKLAHOMA
From 30-NOV-18 23:05:00 to 30-NOV-18 23:05:00 (CST-6)
Location: HEAVENER
Magnitude: 61.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew off portions of the roof of a home, and blew down multiple trees.

Thunderstorm Wind in MUSKOGEE, OKLAHOMA
From 30-NOV-18 22:40:00 to 30-NOV-18 22:40:00 (CST-6)
Location: WEBBERS FALLS SHEFFI
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet station near Webbers Falls measured 65 mph thunderstorm wind gusts.