An outflow boundary generated by thunderstorms earlier in the day, moved slowly north through central into northern Oklahoma. At the same time, a strong cold front moved south through Kansas, eventually moving into Oklahoma during the late evening hours. A strong cap was in place through much of the afternoon, but thunderstorms were eventually able to develop over northwest Oklahoma by early evening. Additional thunderstorms developed near this area and moved east through northern central Oklahoma. With the help of a strengthening low-level jet, even more thunderstorms developed into central Oklahoma by late evening into the early morning hours. Most of the activity moved into eastern Oklahoma, but redevelopment further west continued until close to sunrise as the front moved southeast into a very unstable airmass. Most of the thunderstorms produced large hail, with sporadic areas of strong winds. Minor damage was reported with the large hail and winds.

Hail in WOODWARD, OKLAHOMA
From 19-AUG-09 20:43:00 to 19-AUG-09 20:43:00 (CST-6)
Location: WOODWARD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The hail was reported one mile south of the Highway 412/270 interchange.

Hail in WOODWARD, OKLAHOMA
From 20-AUG-09 03:15:00 to 20-AUG-09 03:15:00 (CST-6)
Location: MOORELAND
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in DEWEY, OKLAHOMA
From 20-AUG-09 04:10:00 to 20-AUG-09 04:10:00 (CST-6)
Location: HUCMAC
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

No damage was reported with the wind gust.

Hail in BLAINE, OKLAHOMA
From 20-AUG-09 04:30:00 to 20-AUG-09 04:30:00 (CST-6)
Location: OKEENE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in HARPER, OKLAHOMA
From 19-AUG-09 19:40:00 to 19-AUG-09 19:50:00 (CST-6)
Location: SELMAN
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A car windshield was busted out by the hail. The hail, up to baseball size, lasted for several minutes. Monetary damages were estimated.

Hail in WOODWARD, OKLAHOMA
From 19-AUG-09 20:55:00 to 19-AUG-09 20:55:00 (CST-6)
Location: WOODWARD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The hail was reported near the junction of Highways 270 and 34.

Hail in KINGFISHER, OKLAHOMA
From 20-AUG-09 05:05:00 to 20-AUG-09 05:05:00 (CST-6)
Location: LOYAL
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WOODWARD, OKLAHOMA
From 19-AUG-09 20:34:00 to 19-AUG-09 20:34:00 (CST-6)
Location: WOODWARD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The hail was reported near 38th Street and Oklahoma Avenue.

Hail in WOODWARD, OKLAHOMA
From 19-AUG-09 20:43:00 to 19-AUG-09 20:43:00 (CST-6)
Location: WOODWARD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The hail was reported on 15th Street, a quarter of a mile south of Oklahoma Avenue.

Hail in MAJOR, OKLAHOMA
From 20-AUG-09 04:10:00 to 20-AUG-09 04:10:00 (CST-6)
Location: FAIRVIEW
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in LINCOLN, OKLAHOMA
From 19-AUG-09 23:03:00 to 19-AUG-09 23:06:00 (CST-6)
Location: CARNEY
Magnitude: 61.00 EG
Property damage: 70.00K
Crop damage: 0.00K
Reported by: County Official

Significant damage was reported to two mobile homes, approximately four miles west and one mile north of the Highway 177 and 105 interchange. Monetary damages were estimated.