A cold front moved into the northwest third of Oklahoma during the afternoon of the 19th before stalling during the early evening hours. As an upper level storm system approached the southern plains, moist air from the Gulf of Mexico began spreading north into Oklahoma. Scattered showers and thunderstorms formed over north central Oklahoma late on the 19th. Several of these thunderstorms became severe, producing large hail and flooding rainfall. After midnight, the stationary front became a warm front and lifted to the north. Additional thunderstorms developed in western and northwest Oklahoma. Several of these thunderstorms also became severe with large hail and very heavy rainfall. Flooding was reported in several areas of northern Oklahoma.

Flash Flood in KAY, OKLAHOMA
From 20-MAR-07 11:35:00 to 20-MAR-07 11:45:00 (CST-6)
Location: KILDARE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rainfall totals of 3 to 7 inches over northern Kay County during the morning hours of March 20 produced flash flooding in the area. At 1135 CST, the Kay County sheriff's office reported flash flooding from the Bois d'Arc Creek over Oklahoma State Highway 11 three miles west of Kildare.

Flash Flood in KAY, OKLAHOMA
From 20-MAR-07 12:00:00 to 20-MAR-07 13:45:00 (CST-6)
Location: BLACKWELL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall totals of 3 to 7 inches over northern Kay County during the morning hours of March 20 produced flash flooding in the area. At 1200 CST, the Kay County emergency manager reported that flash flooding had inundated and closed 13th Street on the south side of the Blackwell.

Hail in KAY, OKLAHOMA
From 19-MAR-07 22:07:00 to 19-MAR-07 22:07:00 (CST-6)
Location: PONCA CITY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in KAY, OKLAHOMA
From 20-MAR-07 12:00:00 to 20-MAR-07 13:45:00 (CST-6)
Location: PONCA CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall totals of 3 to 7 inches over northern Kay County during the morning hours of March 20 produced flash flooding in the area. At 1200 CST, the Kay County emergency manager reported that flash flooding along a small creek had overtopped and closed Waverly Road about 2 miles north of the Ponca City Airport.

Hail in KAY, OKLAHOMA
From 19-MAR-07 22:12:00 to 19-MAR-07 22:12:00 (CST-6)
Location: PONCA CITY
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in NOBLE, OKLAHOMA
From 19-MAR-07 21:27:00 to 19-MAR-07 21:27:00 (CST-6)
Location: RED ROCK
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in NOBLE, OKLAHOMA
From 20-MAR-07 01:00:00 to 20-MAR-07 01:00:00 (CST-6)
Location: MARLAND
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WOODWARD, OKLAHOMA
From 20-MAR-07 06:37:00 to 20-MAR-07 06:37:00 (CST-6)
Location: WOODWARD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flash Flood in KAY, OKLAHOMA
From 20-MAR-07 09:30:00 to 20-MAR-07 09:45:00 (CST-6)
Location: CHILOCCO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall totals of 3 to 7 inches over northern Kay County produced flash flooding in the area. At 0930 CST, the Kay County emergency manager reported flooding of low lying secondary roads in Chilocco along Chilocco Creek.

Flash Flood in KAY, OKLAHOMA
From 20-MAR-07 11:47:00 to 20-MAR-07 13:45:00 (CST-6)
Location: NEWKIRK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rainfall totals of 3 to 7 inches over northern Kay County during the morning hours of March 20 produced flash flooding in the area. At 1147 CST, the Kay County sheriff's office reported flash flooding along rural roads over Wolf Creek one mile east of Newkirk.

Flash Flood in NOBLE, OKLAHOMA
From 20-MAR-07 01:20:00 to 20-MAR-07 02:45:00 (CST-6)
Location: RED ROCK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Rainfall totals of 2 to 4 inches over central Noble County generated flash flooding in the area. At 0120 CST, a law enforcement official reported that flash flooding had covered and closed Oklahoma State Highway 15 one mile west of Red Rock. The floodwaters reached were 2 to 3 feet deep over the highway.

Flash Flood in KAY, OKLAHOMA
From 20-MAR-07 12:00:00 to 20-MAR-07 13:45:00 (CST-6)
Location: PONCA CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall totals of 3 to 7 inches over northern Kay County during the morning hours of March 20 produced flash flooding in the area. At 1200 CST, the Kay County emergency manager reported that flash flooding from along Turkey Creek had covered and closed Oklahoma State Highway 11 four miles northeast of Ponca City and one miles east of the intersection with U.S. Highway 77. The powerful forces of the floodwaters damaged a temporary low water crossing on OK State Highway 11, tearing a 10-foot-wide section from the highway and damaging culverts under the highway.