Thunderstorms developed across portions of central and northern Kansas during the late afternoon hours of August 21st. Upon reaching the Interstate 70 corridor, the thunderstorm complex greatly slowed its southern progression, causing several hours of heavy rainfall. Some areas in southern Douglas and northern Franklin received as much as 9 inches of rainfall.

Flash Flood in SHAWNEE, KANSAS
From 21-AUG-17 21:03:00 to 21-AUG-17 22:30:00 (CST-6)
Location: TOPEKA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Report of 10 inches of standing water at 10th and Topeka due to flash flooding.

Thunderstorm Wind in JACKSON, KANSAS
From 21-AUG-17 19:17:00 to 21-AUG-17 19:18:00 (CST-6)
Location: HOYT
Magnitude: 61.00 EG
Reported by: Public

Delayed report of an ornamental tree, 10 inches in diameter was down on a neighbors house. Several 2-2.5 inch diameter limbs were down as well. Time was estimated from radar.

Thunderstorm Wind in JEFFERSON, KANSAS
From 21-AUG-17 19:40:00 to 21-AUG-17 19:41:00 (CST-6)
Location: ROCK CREEK
Magnitude: 52.00 EG
Reported by: Trained Spotter

Two inch diameter tree limb was down.

Thunderstorm Wind in JEFFERSON, KANSAS
From 21-AUG-17 19:42:00 to 21-AUG-17 19:43:00 (CST-6)
Location: OZAWKIE
Magnitude: 61.00 EG
Reported by: Trained Spotter

Estimated wind gust report.

Flash Flood in JEFFERSON, KANSAS
From 21-AUG-17 19:51:00 to 21-AUG-17 21:30:00 (CST-6)
Location: NORTONVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ditches are overflowing, water over roadways 2 miles east of Nortonville and in fields near house. Estimated rainfall of 4.82 inches.

Thunderstorm Wind in LYON, KANSAS
From 21-AUG-17 20:21:00 to 21-AUG-17 20:22:00 (CST-6)
Location: EMPORIA
Magnitude: 50.00 EG
Reported by: Trained Spotter

Reports of several 2 inch diameter limbs down.

Thunderstorm Wind in LYON, KANSAS
From 21-AUG-17 20:21:00 to 21-AUG-17 20:22:00 (CST-6)
Location: EMPORIA
Magnitude: 70.00 EG
Reported by: Public

Report via social media picture. 10 inch diameter tree branch split from the main trunk. Radar estimated time.

Thunderstorm Wind in LYON, KANSAS
From 21-AUG-17 20:21:00 to 21-AUG-17 20:22:00 (CST-6)
Location: EMPORIA
Magnitude: 70.00 EG
Reported by: Trained Spotter

Six inch diameter tree limb down.

Thunderstorm Wind in DOUGLAS, KANSAS
From 21-AUG-17 20:23:00 to 21-AUG-17 20:24:00 (CST-6)
Location: LAKE VIEW
Magnitude: 61.00 EG
Reported by: NWS Employee

Delayed report of tree split in half. Time was estimated via social media.

Thunderstorm Wind in DOUGLAS, KANSAS
From 21-AUG-17 20:39:00 to 21-AUG-17 20:40:00 (CST-6)
Location: LAWRENCE
Magnitude: 52.00 EG
Reported by: Emergency Manager

Emergency manager relayed reports strong winds of 60 mph at Peterson and Kasold Ave.

Thunderstorm Wind in COFFEY, KANSAS
From 21-AUG-17 22:17:00 to 21-AUG-17 22:18:00 (CST-6)
Location: LE ROY
Magnitude: 70.00 EG
Reported by: COOP Observer

Numerous trees were reported to be split along with several tree branches snapped. The sizes were unknown. Delayed report. Time was based on radar.

Flash Flood in FRANKLIN, KANSAS
From 22-AUG-17 02:24:00 to 22-AUG-17 04:00:00 (CST-6)
Location: WELLSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flash flooding of several streets in Wellsville.

Flash Flood in DOUGLAS, KANSAS
From 22-AUG-17 02:49:00 to 22-AUG-17 04:30:00 (CST-6)
Location: BALDWIN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Delayed report of a water rescue.

Flash Flood in DOUGLAS, KANSAS
From 22-AUG-17 03:36:00 to 22-AUG-17 05:15:00 (CST-6)
Location: VINLAND
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Delayed report of a water rescue.

Flash Flood in JEFFERSON, KANSAS
From 22-AUG-17 04:11:00 to 22-AUG-17 05:45:00 (CST-6)
Location: MC LOUTH ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous low water crossings were under water.

Flash Flood in SHAWNEE, KANSAS
From 22-AUG-17 06:37:00 to 22-AUG-17 08:15:00 (CST-6)
Location: SILVER LAKE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Northwest Hodges Road from 35th Street to Highway 24 is approximately 2 feet under water.

Flash Flood in FRANKLIN, KANSAS
From 22-AUG-17 06:55:00 to 22-AUG-17 08:30:00 (CST-6)
Location: NORWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several rural roads are under water in the northeast portion of Franklin County. 2 water rescues from vehicles and 1 from a home.

Flash Flood in DOUGLAS, KANSAS
From 22-AUG-17 07:00:00 to 22-AUG-17 08:30:00 (CST-6)
Location: WORDEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

N400 road was washed out due to flash flooding. The town of Lone Star was reported flooded. Many county roads flooded in low lying areas.

Flash Flood in JEFFERSON, KANSAS
From 22-AUG-17 01:36:00 to 22-AUG-17 03:15:00 (CST-6)
Location: MC LOUTH ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Swift water rescue was ongoing due to flash flooding.

Flash Flood in FRANKLIN, KANSAS
From 22-AUG-17 08:06:00 to 22-AUG-17 09:30:00 (CST-6)
Location: NORWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Water rescue reported in the 3800 block of Nebraska Drive in Ottawa.