Discrete thunderstorms and a squall line moved across the Oklahoma Panhandle during the evening and overnight hours of the 7th. These severe storms not only had ample instability to fuel them but also a marginally above average moist atmosphere. The 6 PM CST upper air soundings out of Amarillo, Texas and Dodge City, Kansas showed Precipitable Water values between 1.24 inches and 1.40 inches. This is around the climatologically 75th percentile, which is an indication that thunderstorms forming in this environment will have the potential to produce very heavy to flash flooding rain.  Many locations across the panhandle experienced flash flooding and heavy rain before the squall line moved into western Oklahoma by midnight of the 8th.

Flash Flood in TEXAS, OKLAHOMA
From 07-AUG-13 20:00:00 to 07-AUG-13 21:29:00 (CST-6)
Location: (GUY)GUYMON MUNI ARP
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Heavy rain from a squall line led to flash flooding in the town of Guymon (Texas County). The Guymon Fire Department reported that low lying roads were closed due to flash flooding making them impassable. Once precipitation ended over this portion of the county, the flooding quickly receded. No swift water rescues or stranded motorist were reported in association to this flash flooding.

Flash Flood in TEXAS, OKLAHOMA
From 07-AUG-13 21:00:00 to 08-AUG-13 00:30:00 (CST-6)
Location: HOOKER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Heavy rain from a squall line led to flash flooding across eastern Texas County. The Oklahoma Department of Transportation reported that flash flooding caused the closure of roads across the eastern portion of the county as they had become impassable. Once precipitation ended over this portion of the county, the flooding slowly receded with some roads still flooded after midnight of the 8th. No swift water rescues or stranded motorist were reported in association to this flash flooding.

Flash Flood in BEAVER, OKLAHOMA
From 07-AUG-13 21:58:00 to 07-AUG-13 23:00:00 (CST-6)
Location: BOYD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain from a squall line led to flash flooding over the western portion of Beaver County. The Beaver County Emergency Manager reported that flash flooding was covering U.S. Highway 83 13 miles south of Turpin (Beaver County). Once precipitation ended over this portion of the county, the flooding quickly receded. No swift water rescues or stranded motorist were reported in association to this flash flooding.

Flash Flood in CIMARRON, OKLAHOMA
From 07-AUG-13 18:30:00 to 07-AUG-13 20:30:00 (CST-6)
Location: KEYES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The combination of heavy rain from a discrete thunderstorm and squall line lead to flash flooding north and east of the city of Keyes (Cimarron County). This flash flooding washed out several county roads as reported by the Cimarron County Emergency Manager. Once precipitation ended over this portion of the county, the flooding quickly receded. No swift water rescues or stranded motorist were reported in association to this flash flooding.

Flash Flood in BEAVER, OKLAHOMA
From 07-AUG-13 22:17:00 to 08-AUG-13 01:37:00 (CST-6)
Location: BEAVER
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain from a squall line led to flash flooding in the town of Beaver (Beaver County). The Beaver County Emergency Manager reported that 4 inches of rain fell in Beaver over a short period of time. This led to flash flooding in town and on U.S. Highway 270 5 miles south of Beaver (Beaver County). Some roads in Beaver had 4 to 6 inches of water covering the road, and that flood waters had gotten into homes, businesses, and the courthouse. Once precipitation ended over this portion of the county, the flooding slowly receded. No swift water rescues or stranded motorist were reported in association to this flash flooding.