Severe thunderstorms developed over central Oklahoma and southern Kansas along a slow-moving cold front during the afternoon hours of the 31st. Very unstable air ahead of the cold front, combined with strong wind shear, resulted in storms quickly evolving into supercells. These storms produced several tornadoes, large hail to golfball size, and damaging wind across eastern Oklahoma during the evening hours of the 31st into the overnight hours of June 1st.

Tornado in ROGERS, OKLAHOMA
From 31-MAY-13 19:21:00 to 31-MAY-13 19:25:00 (CST-6)
Location: TALALA
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the first of two segments of this tornado. The tornado snapped a number of trees and uprooted many others in Rogers County. Based on this tree damage, maximum estimated wind in the tornado was 100 to 110 mph. The tornado was photographed by several storm chasers. It continued into Nowata County, Oklahoma.

Tornado in NOWATA, OKLAHOMA
From 31-MAY-13 19:25:00 to 31-MAY-13 19:26:00 (CST-6)
Location: WATOVA
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the final segment of a two segment tornado. In Nowata County, this tornado snapped or uprooted numerous trees. Based on this damage, maximum estimated wind in this segment was 100 to 110 mph. Several storm chasers photographed this tornado. The tornado moved east-northeast, turning more northeasterly as it crossed the N 4110 Road.

Tornado in ROGERS, OKLAHOMA
From 31-MAY-13 19:27:00 to 31-MAY-13 19:28:00 (CST-6)
Location: TALALA
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the first of two segements of this tornado. In Rogers County, this tornado snapped or uprooted trees. Maximum estimated wind in the tornado based on this damage was 100 to 110 mph. Several storm chasers photographed this tornado. It continued into Nowata County, Oklahoma.

Tornado in DELAWARE, OKLAHOMA
From 31-MAY-13 22:23:00 to 31-MAY-13 22:27:00 (CST-6)
Location: ZENA
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado developed near the shore of Grand Lake and traveled east-northeast, snapping large tree limbs and uprooting many trees in its path. No significant damage was noted to the homes in the path near the lake shore. Based on this damage, maximum estimated wind in the tornado was 90 to 100 mph.

Tornado in NOWATA, OKLAHOMA
From 31-MAY-13 19:28:00 to 31-MAY-13 19:35:00 (CST-6)
Location: WATOVA
Tornado F-scale: EF1
Property damage: 75.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the final segment of this two segment tornado. In Nowata County, this tornado destroyed a mobile home, injuring two occupants. It also damaged other permanent homes, destroyed a barn, and snapped or uprooted numerous trees. Based on this damage, maximum estimated wind in this segment of the tornado was 100 to 110 mph. Several storm chasers photographed this tornado. This tornado moved east-northeast until it crossed E 28 Road then turned sharply to the north, paralleling the N 4150 Road until it dissipated.

Thunderstorm Wind in CRAIG, OKLAHOMA
From 31-MAY-13 23:06:00 to 31-MAY-13 23:06:00 (CST-6)
Location: WELCH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind blew down several large tree limbs.

Hail in MUSKOGEE, OKLAHOMA
From 31-MAY-13 23:08:00 to 31-MAY-13 23:08:00 (CST-6)
Location: PORUM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in MUSKOGEE, OKLAHOMA
From 31-MAY-13 23:15:00 to 31-MAY-13 23:15:00 (CST-6)
Location: WEBBERS FALLS
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong thunderstorm wind blew down several large trees.

Hail in OKFUSKEE, OKLAHOMA
From 31-MAY-13 23:22:00 to 31-MAY-13 23:22:00 (CST-6)
Location: PADEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Post Office

Thunderstorm Wind in SEQUOYAH, OKLAHOMA
From 31-MAY-13 23:25:00 to 31-MAY-13 23:25:00 (CST-6)
Location: BOX
Magnitude: 70.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Strong thunderstorm wind snapped eight power poles near the Black Gum Fire Department.

Thunderstorm Wind in SEQUOYAH, OKLAHOMA
From 31-MAY-13 23:25:00 to 31-MAY-13 23:25:00 (CST-6)
Location: GORE
Magnitude: 75.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind snapped or uprooted large trees at Snake Creek Park at Lake Tenkiller.

Thunderstorm Wind in SEQUOYAH, OKLAHOMA
From 31-MAY-13 23:25:00 to 31-MAY-13 23:25:00 (CST-6)
Location: VIAN
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind blew down several large trees.

Thunderstorm Wind in CHEROKEE, OKLAHOMA
From 31-MAY-13 23:35:00 to 31-MAY-13 23:35:00 (CST-6)
Location: COOKSON
Magnitude: 70.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Strong thunderstorm wind blew down large trees and damaged the awning of a store.

Thunderstorm Wind in SEQUOYAH, OKLAHOMA
From 31-MAY-13 23:37:00 to 31-MAY-13 23:37:00 (CST-6)
Location: SALLISAW
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind blew down several large trees.

Thunderstorm Wind in OSAGE, OKLAHOMA
From 31-MAY-13 16:10:00 to 31-MAY-13 16:10:00 (CST-6)
Location: GRAINOLA
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind blew down trees.

Thunderstorm Wind in OSAGE, OKLAHOMA
From 31-MAY-13 16:59:00 to 31-MAY-13 16:59:00 (CST-6)
Location: BOULANGERVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A small tree was snapped and large branches were blown down by strong thunderstorm wind.

Thunderstorm Wind in NOWATA, OKLAHOMA
From 31-MAY-13 17:55:00 to 31-MAY-13 17:55:00 (CST-6)
Location: SOUTH COFFEEVILLE AR
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Numerous trees were damaged by strong thunderstorm wind.

Thunderstorm Wind in OSAGE, OKLAHOMA
From 31-MAY-13 17:59:00 to 31-MAY-13 17:59:00 (CST-6)
Location: PAWHUSKA
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tree was uprooted by strong thunderstorm wind.

Thunderstorm Wind in NOWATA, OKLAHOMA
From 31-MAY-13 18:18:00 to 31-MAY-13 18:18:00 (CST-6)
Location: LENAPAH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Large tree limbs were snapped by strong thunderstorm wind.

Thunderstorm Wind in HASKELL, OKLAHOMA
From 31-MAY-13 22:50:00 to 31-MAY-13 22:50:00 (CST-6)
Location: ENTERPRISE
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind blew down a few large trees.

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

A tree was uprooted by strong thunderstorm wind.

Thunderstorm Wind in NOWATA, OKLAHOMA
From 31-MAY-13 18:22:00 to 31-MAY-13 18:22:00 (CST-6)
Location: LENAPAH
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Trees were split and large branches were snapped by strong thunderstorm wind.

Thunderstorm Wind in CRAIG, OKLAHOMA
From 31-MAY-13 18:23:00 to 31-MAY-13 18:23:00 (CST-6)
Location: WELCH
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tree was uprooted and large branches were snapped by strong thunderstorm wind.

Hail in CREEK, OKLAHOMA
From 31-MAY-13 18:45:00 to 31-MAY-13 18:45:00 (CST-6)
Location: DRUMRIGHT
Magnitude: 1.75 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in DELAWARE, OKLAHOMA
From 31-MAY-13 22:30:00 to 31-MAY-13 22:30:00 (CST-6)
Location: GROVE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Trees were damaged by strong thunderstorm wind.

Tornado in OSAGE, OKLAHOMA
From 31-MAY-13 17:18:00 to 31-MAY-13 17:18:00 (CST-6)
Location: HULAH
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

This brief tornado was reported by a storm chaser. The NWS survey team could find no damage as a result of this tornado as it occurred over open country.

Thunderstorm Wind in MCINTOSH, OKLAHOMA
From 31-MAY-13 22:40:00 to 31-MAY-13 22:40:00 (CST-6)
Location: EUFAULA MUNI ARPT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet station near Eufaula measured 58 mph thunderstorm wind gusts.

Thunderstorm Wind in MCINTOSH, OKLAHOMA
From 31-MAY-13 22:42:00 to 31-MAY-13 22:42:00 (CST-6)
Location: WELLS
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A storm spotter estimated thunderstorm wind gusts to 70 mph.

Thunderstorm Wind in PITTSBURG, OKLAHOMA
From 31-MAY-13 22:45:00 to 31-MAY-13 22:45:00 (CST-6)
Location: BOWLER
Magnitude: 70.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Public

Numerous large trees were blown down by strong thunderstorm wind, a few of which fell onto homes.

Thunderstorm Wind in PITTSBURG, OKLAHOMA
From 31-MAY-13 22:48:00 to 31-MAY-13 22:48:00 (CST-6)
Location: QUINTON ARPT
Magnitude: 56.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind damaged a marina dock in far northeast Pittsburg County.

Tornado in WASHINGTON, OKLAHOMA
From 31-MAY-13 17:38:00 to 31-MAY-13 17:40:00 (CST-6)
Location: OWEN
Tornado F-scale: EF1
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado occurred mostly over open country but did damage the roof of a home and uproot several trees. Based on this damage, maximum estimated wind in the tornado was 85 to 95 mph.

Thunderstorm Wind in WASHINGTON, OKLAHOMA
From 31-MAY-13 17:39:00 to 31-MAY-13 17:39:00 (CST-6)
Location: OWEN
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Strong thunderstorm wind, likely associated with the tornadic storm's rear flank downdraft, snapped large tree limbs.

Tornado in NOWATA, OKLAHOMA
From 31-MAY-13 18:21:00 to 31-MAY-13 18:22:00 (CST-6)
Location: SOUTH COFFEYVILLE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado damaged a number of trees. Based on this damage, maximum estimated wind in the tornado was 80 to 85 mph.

Thunderstorm Wind in ADAIR, OKLAHOMA
From 31-MAY-13 23:42:00 to 31-MAY-13 23:42:00 (CST-6)
Location: BUNCH
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind blew down several large trees.

Thunderstorm Wind in ADAIR, OKLAHOMA
From 31-MAY-13 23:45:00 to 31-MAY-13 23:45:00 (CST-6)
Location: BUNCH
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind blew down large tree limbs.

Tornado in OSAGE, OKLAHOMA
From 31-MAY-13 17:30:00 to 31-MAY-13 17:37:00 (CST-6)
Location: LITTLE CHIEF
Tornado F-scale: EF1
Property damage: 2.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado remained over open country much of its life cycle but did snap two power poles. Maximum estimated wind in the tornado based on this limited amount of damage, from which to make the assessment, was 85 to 95 mph.