A dry line set up over the eastern panhandles during the afternoon, with dew point temperatures in the middle to upper 60s east of the boundary. Afternoon heating and lift from an upper level disturbance allowed for thunderstorms to develop east of the dry line. The thunderstorms moved into western and northwestern Oklahoma by the afternoon, mainly north of Interstate 40. Supercell thunderstorms dropped very large hail as they moved northeast toward the Kansas border. Another cluster of thunderstorms moved northeast toward parts of central and northern Oklahoma. Large hail up to golf ball size, damaging winds near 70 mph, and very heavy rainfall were reported with the complex. Damage to trees and power lines was reported as the thunderstorms passed. The thunderstorms finally moved into Kansas during the late night hours. Monetary damages were estimated.

Hail in LINCOLN, OKLAHOMA
From 23-MAY-08 00:57:00 to 23-MAY-08 00:57:00 (CST-6)
Location: AGRA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Large quantities of golf ball size hail covered the ground.

High Wind in WOODS, OKLAHOMA
From 22-MAY-08 19:30:00 to 22-MAY-08 19:30:00 (CST-6)
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A measured, heat-burst wind gust was reported seven miles south-southwest of Alva.

High Wind in WOODS, OKLAHOMA
From 22-MAY-08 20:14:00 to 22-MAY-08 20:14:00 (CST-6)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A continued heat-burst wind gust was measured in Alva.

Hail in ROGER MILLS, OKLAHOMA
From 22-MAY-08 16:50:00 to 22-MAY-08 16:50:00 (CST-6)
Location: SWEETWATER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported that the hail covered the ground.

Hail in ELLIS, OKLAHOMA
From 22-MAY-08 17:15:00 to 22-MAY-08 17:15:00 (CST-6)
Location: CATESBY
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in ELLIS, OKLAHOMA
From 22-MAY-08 17:20:00 to 22-MAY-08 17:20:00 (CST-6)
Location: CATESBY
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported that the hail covered the ground.

Hail in ROGER MILLS, OKLAHOMA
From 22-MAY-08 17:30:00 to 22-MAY-08 17:30:00 (CST-6)
Location: STRONG CITY
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in DEWEY, OKLAHOMA
From 22-MAY-08 18:30:00 to 22-MAY-08 18:30:00 (CST-6)
Location: LEEDEY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

The report was relayed by the National Severe Storms Laboratory SHAVE verification project.

High Wind in WOODS, OKLAHOMA
From 22-MAY-08 20:34:00 to 22-MAY-08 20:34:00 (CST-6)
Magnitude: 61.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Mesonet

Trees were reportedly blown down by a continuous heat-burst event. The damage was reported one mile southeast of Alva. Monetary damages were estimated.

Hail in HARPER, OKLAHOMA
From 22-MAY-08 17:42:00 to 22-MAY-08 17:42:00 (CST-6)
Location: LAVERNE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The report was relayed by an Oklahoma City television station Storm Tracker.

Thunderstorm Wind in WOODS, OKLAHOMA
From 22-MAY-08 22:38:00 to 22-MAY-08 22:38:00 (CST-6)
Location: ALVA
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in LOGAN, OKLAHOMA
From 22-MAY-08 22:54:00 to 22-MAY-08 22:54:00 (CST-6)
Location: GUTHRIE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in ALFALFA, OKLAHOMA
From 22-MAY-08 23:15:00 to 22-MAY-08 23:15:00 (CST-6)
Location: GREAT SALT PLAINS LAKE DAM
Magnitude: 61.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous trees were downed three miles south of the intersections of Highways 11 and 38. Monetary damages were estimated.

High Wind in WOODS, OKLAHOMA
From 22-MAY-08 19:45:00 to 22-MAY-08 19:45:00 (CST-6)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A continued heat-burst wind gust was reported seven miles south-southwest of Alva.

High Wind in WOODS, OKLAHOMA
From 22-MAY-08 19:54:00 to 22-MAY-08 19:54:00 (CST-6)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

A continued heat-burst wind gust was measured in Alva.

High Wind in WOODS, OKLAHOMA
From 22-MAY-08 20:00:00 to 22-MAY-08 20:00:00 (CST-6)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A continued heat-burst wind gust was measured seven miles south-southwest of Alva.

Hail in KINGFISHER, OKLAHOMA
From 22-MAY-08 22:04:00 to 22-MAY-08 22:04:00 (CST-6)
Location: KINGFISHER
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The hail report was relayed by an Oklahoma City television station.

Hail in ROGER MILLS, OKLAHOMA
From 22-MAY-08 18:00:00 to 22-MAY-08 18:00:00 (CST-6)
Location: HAMMON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

The report was relayed by the National Severe Storms Laboratory SHAVE verification project.

Hail in LOGAN, OKLAHOMA
From 22-MAY-08 23:36:00 to 22-MAY-08 23:36:00 (CST-6)
Location: GUTHRIE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WOODWARD, OKLAHOMA
From 22-MAY-08 20:20:00 to 22-MAY-08 20:20:00 (CST-6)
Location: FORT SUPPLY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in CUSTER, OKLAHOMA
From 22-MAY-08 20:23:00 to 22-MAY-08 20:23:00 (CST-6)
Location: THOMAS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BLAINE, OKLAHOMA
From 22-MAY-08 20:27:00 to 22-MAY-08 20:27:00 (CST-6)
Location: WATONGA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The hail was reported near Highway 8.

Hail in BLAINE, OKLAHOMA
From 22-MAY-08 19:45:00 to 22-MAY-08 19:45:00 (CST-6)
Location: CANTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in WOODWARD, OKLAHOMA
From 22-MAY-08 19:46:00 to 22-MAY-08 19:46:00 (CST-6)
Location: FORT SUPPLY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in WOODWARD, OKLAHOMA
From 22-MAY-08 19:48:00 to 22-MAY-08 19:48:00 (CST-6)
Location: FORT SUPPLY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

The hail was reported near Fort Supply Lake.

Hail in ROGER MILLS, OKLAHOMA
From 22-MAY-08 18:15:00 to 22-MAY-08 18:15:00 (CST-6)
Location: HAMMON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in ELLIS, OKLAHOMA
From 22-MAY-08 19:15:00 to 22-MAY-08 19:15:00 (CST-6)
Location: GAGE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KINGFISHER, OKLAHOMA
From 22-MAY-08 22:00:00 to 22-MAY-08 22:00:00 (CST-6)
Location: KINGFISHER
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in KINGFISHER, OKLAHOMA
From 22-MAY-08 22:02:00 to 22-MAY-08 22:02:00 (CST-6)
Location: KINGFISHER
Magnitude: 61.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Winds estimated at 65 to 70 mph blew through and around the Kingfisher area. Numerous tree limbs and power lines were blown down. The electricity in the town of Kingfisher was knocked out. Roof damage was also reported five miles northwest of Kingfisher. Monetary damages were estimated.

Thunderstorm Wind in KINGFISHER, OKLAHOMA
From 22-MAY-08 22:38:00 to 22-MAY-08 22:38:00 (CST-6)
Location: CASHION
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in ROGER MILLS, OKLAHOMA
From 22-MAY-08 17:33:00 to 22-MAY-08 17:33:00 (CST-6)
Location: CHEYENNE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in ROGER MILLS, OKLAHOMA
From 22-MAY-08 17:37:00 to 22-MAY-08 17:37:00 (CST-6)
Location: CHEYENNE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in HARPER, OKLAHOMA
From 22-MAY-08 18:00:00 to 22-MAY-08 18:00:00 (CST-6)
Location: BUFFALO
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HARPER, OKLAHOMA
From 22-MAY-08 18:00:00 to 22-MAY-08 18:00:00 (CST-6)
Location: BUFFALO
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in DEWEY, OKLAHOMA
From 22-MAY-08 19:32:00 to 22-MAY-08 19:32:00 (CST-6)
Location: OAKWOOD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in ROGER MILLS, OKLAHOMA
From 22-MAY-08 17:39:00 to 22-MAY-08 17:39:00 (CST-6)
Location: CHEYENNE
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in ROGER MILLS, OKLAHOMA
From 22-MAY-08 18:15:00 to 22-MAY-08 18:15:00 (CST-6)
Location: HAMMON
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Several tree limbs were downed by high winds. Nickel size hail was also reported. Monetary damages were estimated.

Hail in HARPER, OKLAHOMA
From 22-MAY-08 20:36:00 to 22-MAY-08 20:36:00 (CST-6)
Location: MAY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in BLAINE, OKLAHOMA
From 22-MAY-08 21:13:00 to 22-MAY-08 21:13:00 (CST-6)
Location: WATONGA
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in KINGFISHER, OKLAHOMA
From 22-MAY-08 22:00:00 to 22-MAY-08 22:00:00 (CST-6)
Location: KINGFISHER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in WOODWARD, OKLAHOMA
From 22-MAY-08 20:30:00 to 22-MAY-08 20:30:00 (CST-6)
Location: FORT SUPPLY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in WOODWARD, OKLAHOMA
From 22-MAY-08 20:33:00 to 22-MAY-08 20:33:00 (CST-6)
Location: FORT SUPPLY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The hail was reported near Fort Supply Lake.

Hail in WOODWARD, OKLAHOMA
From 22-MAY-08 20:36:00 to 22-MAY-08 20:36:00 (CST-6)
Location: FORT SUPPLY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager