A large line of strong to severe thunderstorms developed over western Oklahoma during the late afternoon of the 18th and moved eastward as the evening progressed. Mangum, in Greer County, sustained structural damage inside the city limits, and there were two, brief, weak tornadoes verified over northern Oklahoma. One tornado formed near Nash in Grant County, while the other formed near Braman in Kay County. Both tornadoes were rated F0.

Hail in KIOWA, OKLAHOMA
From 18-SEP-02 16:30:00 to 18-SEP-02 16:30:00 (CST)
Location: COOPERTON
Magnitude: 0.75 
Reported by: STORM CHASER

Hail in CADDO, OKLAHOMA
From 18-SEP-02 17:20:00 to 18-SEP-02 17:20:00 (CST)
Location: BOONE
Magnitude: 4.50 
Reported by: STORM CHASER

Thunderstorm Wind in JACKSON, OKLAHOMA
From 18-SEP-02 15:24:00 to 18-SEP-02 15:24:00 (CST)
Location: ALTUS AFB
Magnitude: 57 M
Reported by: EMERGENCY MANAGER

Thunderstorm Wind in KIOWA, OKLAHOMA
From 18-SEP-02 15:46:00 to 18-SEP-02 15:46:00 (CST)
Location: HOBART
Magnitude: 64 M
Reported by: AWOS,ASOS,MESONET,ETC

Hail in CANADIAN, OKLAHOMA
From 18-SEP-02 19:50:00 to 18-SEP-02 19:50:00 (CST)
Location: KARNES STATION
Magnitude: 2.75 
Reported by: STORM CHASER

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 18-SEP-02 21:20:00 to 18-SEP-02 21:20:00 (CST)
Location: EDMOND
Magnitude: 52 E
Reported by: AMATEUR RADIO

Hail in PAYNE, OKLAHOMA
From 18-SEP-02 22:05:00 to 18-SEP-02 22:05:00 (CST)
Location: STILLWATER
Magnitude: 0.88 
Reported by: STORM CHASER

Thunderstorm Wind in KINGFISHER, OKLAHOMA
From 18-SEP-02 20:40:00 to 18-SEP-02 20:40:00 (CST)
Location: OKARCHE
Magnitude: 52 E
Reported by: STORM CHASER

Thunderstorm Wind in MAJOR, OKLAHOMA
From 18-SEP-02 18:45:00 to 18-SEP-02 18:45:00 (CST)
Location: ISABELLA
Property damage: .5K
Reported by: EMERGENCY MANAGER

A one foot diameter tree was blown over.

Hail in GRANT, OKLAHOMA
From 18-SEP-02 17:35:00 to 18-SEP-02 17:35:00 (CST)
Location: MEDFORD
Magnitude: 0.88 
Reported by: GENERAL PUBLIC

Hail in LOGAN, OKLAHOMA
From 18-SEP-02 21:05:00 to 18-SEP-02 21:05:00 (CST)
Location: NAVINA
Magnitude: 0.88 
Reported by: AMATEUR RADIO

Hail in CANADIAN, OKLAHOMA
From 18-SEP-02 20:20:00 to 18-SEP-02 20:20:00 (CST)
Location: KARNES STATION
Magnitude: 1.00 
Reported by: AMATEUR RADIO

Flash Flood in KAY, OKLAHOMA
From 18-SEP-02 20:43:00 to 18-SEP-02 20:43:00 (CST)
Location: PONCA CITY
Property damage: 0K
Reported by: EMERGENCY MANAGER

Numerous streets were covered with water.

Hail in CANADIAN, OKLAHOMA
From 18-SEP-02 20:45:00 to 18-SEP-02 20:45:00 (CST)
Location: OKARCHE
Magnitude: 0.75 
Reported by: GENERAL PUBLIC

Thunderstorm Wind in JACKSON, OKLAHOMA
From 18-SEP-02 15:30:00 to 18-SEP-02 15:30:00 (CST)
Location: ALTUS AFB
Magnitude: 59 M
Reported by: AWOS,ASOS,MESONET,ETC

Thunderstorm Wind in KIOWA, OKLAHOMA
From 18-SEP-02 15:50:00 to 18-SEP-02 15:50:00 (CST)
Location: HOBART
Magnitude: 74 M
Reported by: AWOS,ASOS,MESONET,ETC

Hail in WASHITA, OKLAHOMA
From 18-SEP-02 16:15:00 to 18-SEP-02 16:15:00 (CST)
Location: LAKE VLY
Magnitude: 0.75 
Reported by: STORM CHASER

Thunderstorm Wind in BLAINE, OKLAHOMA
From 18-SEP-02 19:40:00 to 18-SEP-02 19:40:00 (CST)
Location: HOMESTEAD
Property damage: .5K
Reported by: GENERAL PUBLIC

Power lines were downed.

Thunderstorm Wind in GARFIELD, OKLAHOMA
From 18-SEP-02 20:00:00 to 18-SEP-02 20:00:00 (CST)
Location: GARBER
Property damage: 2K
Reported by: GENERAL PUBLIC

Trees were downed.

Thunderstorm Wind in JACKSON, OKLAHOMA
From 18-SEP-02 20:35:00 to 18-SEP-02 20:35:00 (CST)
Location: DUKE
Magnitude: 69 E
Reported by: GENERAL PUBLIC

Hail in CUSTER, OKLAHOMA
From 18-SEP-02 18:15:00 to 18-SEP-02 18:15:00 (CST)
Location: ARAPAHO
Magnitude: 1.25 
Reported by: STORM CHASER

Thunderstorm Wind in CUSTER, OKLAHOMA
From 18-SEP-02 17:50:00 to 18-SEP-02 17:50:00 (CST)
Location: BUTLER
Magnitude: 69 M
Reported by: AWOS,ASOS,MESONET,ETC

Wind was measured by the Oklahoma mesonet.

Thunderstorm Wind in GREER, OKLAHOMA
From 18-SEP-02 17:05:00 to 18-SEP-02 17:05:00 (CST)
Location: MANGUM
Property damage: 30K
Reported by: EMERGENCY MANAGER

A roof of a restaurant was damaged. Trees were downed. Windows were broken, and carports were blown off of two homes.

Thunderstorm Wind in GRANT, OKLAHOMA
From 18-SEP-02 18:30:00 to 18-SEP-02 18:30:00 (CST)
Location: JEFFERSON
Magnitude: 52 E
Reported by: STORM CHASER

Thunderstorm Wind in KAY, OKLAHOMA
From 18-SEP-02 18:50:00 to 18-SEP-02 18:50:00 (CST)
Location: NARDIN
Magnitude: 61 E
Reported by: STORM CHASER

Hail in KINGFISHER, OKLAHOMA
From 18-SEP-02 21:27:00 to 18-SEP-02 21:27:00 (CST)
Location: CASHION
Magnitude: 0.75 
Reported by: GENERAL PUBLIC

Thunderstorm Wind in KINGFISHER, OKLAHOMA
From 18-SEP-02 21:27:00 to 18-SEP-02 21:27:00 (CST)
Location: CASHION
Magnitude: 52 E
Reported by: GENERAL PUBLIC

Thunderstorm Wind in DEWEY, OKLAHOMA
From 18-SEP-02 18:15:00 to 18-SEP-02 18:15:00 (CST)
Location: PUTNAM
Magnitude: 69 E
Property damage: .5K
Reported by: GENERAL PUBLIC

Power lines were downed.

Hail in DEWEY, OKLAHOMA
From 18-SEP-02 18:15:00 to 18-SEP-02 18:15:00 (CST)
Location: PUTNAM
Magnitude: 0.75 
Reported by: GENERAL PUBLIC

Thunderstorm Wind in BLAINE, OKLAHOMA
From 18-SEP-02 19:30:00 to 18-SEP-02 19:30:00 (CST)
Location: LONGDALE
Property damage: .5K
Reported by: GENERAL PUBLIC

A ten inch diameter tree was downed.

Thunderstorm Wind in GARFIELD, OKLAHOMA
From 18-SEP-02 18:15:00 to 18-SEP-02 18:15:00 (CST)
Location: LAHOMA
Property damage: .01K
Reported by: GENERAL PUBLIC

Large tree limbs were downed.

Tornado in KAY, OKLAHOMA
From 18-SEP-02 18:29:00 to 18-SEP-02 18:30:00 (CST)
Location: BLACKWELL
Tornado F-scale: F0
Property damage: 0K
Reported by: STORM CHASER

This brief, non-mesocyclonic tornado was captured on video by storm chasers. No damage was observed or reported.

Tornado in GRANT, OKLAHOMA
From 18-SEP-02 17:16:00 to 18-SEP-02 17:19:00 (CST)
Location: NASH
Tornado F-scale: F0
Property damage: 0K
Reported by: STORM CHASER

This brief tornado was captured on video and resulted in no damage.

Thunderstorm Wind in KAY, OKLAHOMA
From 18-SEP-02 19:00:00 to 18-SEP-02 19:00:00 (CST)
Location: TONKAWA
Property damage: 1K
Reported by: EMERGENCY MANAGER

A shed was blown over.

Thunderstorm Wind in KAY, OKLAHOMA
From 18-SEP-02 19:10:00 to 18-SEP-02 19:10:00 (CST)
Location: BLACKWELL
Property damage: 2K
Reported by: EMERGENCY MANAGER

The roof of a barn was blown off.

Thunderstorm Wind in GRANT, OKLAHOMA
From 18-SEP-02 18:30:00 to 18-SEP-02 18:30:00 (CST)
Location: NASH
Property damage: 25K
Reported by: NEWSPAPER

Five power poles were downed on US 64, one landing on a vehicle.

Thunderstorm Wind in KINGFISHER, OKLAHOMA
From 18-SEP-02 19:40:00 to 18-SEP-02 19:40:00 (CST)
Location: HENNESSEY
Magnitude: 52 E
Reported by: STORM CHASER

Hail in CADDO, OKLAHOMA
From 18-SEP-02 18:20:00 to 18-SEP-02 18:20:00 (CST)
Location: ANADARKO
Magnitude: 0.88 
Reported by: GENERAL PUBLIC

Hail in GARFIELD, OKLAHOMA
From 18-SEP-02 19:15:00 to 18-SEP-02 19:15:00 (CST)
Location: ENID
Magnitude: 0.75 
Reported by: STORM CHASER

Hail in KAY, OKLAHOMA
From 18-SEP-02 19:16:00 to 18-SEP-02 19:16:00 (CST)
Location: BRAMAN
Magnitude: 0.75 
Reported by: STORM CHASER

Hail in KAY, OKLAHOMA
From 18-SEP-02 18:57:00 to 18-SEP-02 18:57:00 (CST)
Location: BLACKWELL
Magnitude: 0.75 
Reported by: EMERGENCY MANAGER

Thunderstorm Wind in DEWEY, OKLAHOMA
From 18-SEP-02 18:25:00 to 18-SEP-02 18:25:00 (CST)
Location: PUTNAM
Magnitude: 64 M
Reported by: AWOS,ASOS,MESONET,ETC

Wind was measured by the Oklahoma mesonet.

Hail in GARFIELD, OKLAHOMA
From 18-SEP-02 19:20:00 to 18-SEP-02 19:20:00 (CST)
Location: ENID
Magnitude: 0.88 
Reported by: GENERAL PUBLIC

Hail in KAY, OKLAHOMA
From 18-SEP-02 19:16:00 to 18-SEP-02 19:16:00 (CST)
Location: BRAMAN
Magnitude: 0.75 
Reported by: EMERGENCY MANAGER

Thunderstorm Wind in ALFALFA, OKLAHOMA
From 18-SEP-02 17:27:00 to 18-SEP-02 17:27:00 (CST)
Location: GOLTRY
Property damage: .5K
Reported by: DEPT OF HIGHWAYS

Power lines were downed.

Hail in WASHITA, OKLAHOMA
From 18-SEP-02 17:45:00 to 18-SEP-02 17:45:00 (CST)
Location: SENTINEL
Magnitude: 1.00 
Reported by: GENERAL PUBLIC

Hail in KAY, OKLAHOMA
From 18-SEP-02 19:07:00 to 18-SEP-02 19:07:00 (CST)
Location: BRAMAN
Magnitude: 1.75 
Reported by: EMERGENCY MANAGER

Hail in GARFIELD, OKLAHOMA
From 18-SEP-02 19:20:00 to 18-SEP-02 19:20:00 (CST)
Location: ENID
Magnitude: 0.88 
Reported by: GENERAL PUBLIC

Thunderstorm Wind in KAY, OKLAHOMA
From 18-SEP-02 19:17:00 to 18-SEP-02 19:17:00 (CST)
Location: PONCA CITY
Magnitude: 55 M
Reported by: AWOS,ASOS,MESONET,ETC

Hail in CADDO, OKLAHOMA
From 18-SEP-02 19:30:00 to 18-SEP-02 19:30:00 (CST)
Location: HINTON
Magnitude: 0.75 
Reported by: STORM CHASER

Thunderstorm Wind in CANADIAN, OKLAHOMA
From 18-SEP-02 19:40:00 to 18-SEP-02 19:40:00 (CST)
Location: KARNES STATION
Magnitude: 61 E
Reported by: STORM CHASER

Thunderstorm Wind in WASHITA, OKLAHOMA
From 18-SEP-02 17:45:00 to 18-SEP-02 17:45:00 (CST)
Location: SENTINEL
Magnitude: 61 E
Reported by: GENERAL PUBLIC

Thunderstorm Wind in BLAINE, OKLAHOMA
From 18-SEP-02 18:00:00 to 18-SEP-02 18:00:00 (CST)
Location: HOMESTEAD
Magnitude: 52 E
Reported by: GENERAL PUBLIC

Thunderstorm Wind in MAJOR, OKLAHOMA
From 18-SEP-02 18:00:00 to 18-SEP-02 18:00:00 (CST)
Location: FAIRVIEW
Magnitude: 52 E
Reported by: GENERAL PUBLIC