Flash Flood Warning until 07:00AM 
The National Weather Service in Sioux Falls has issued a
* Flash Flood Warning for... Southwestern Rock County in southwestern Minnesota... Southeastern Minnehaha County in southeastern South Dakota...
* Until 700 AM CDT.
* At 307 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. Additional rainfall amounts of 1 to 3 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include... Sioux Falls, Brandon, Valley Springs, Hills, Beaver Creek, Rowena, Corson and Ellis.
* AFFECTED AREAS: ROCK, MN ... MINNEHAHA, SD
Instructions:
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding.
Address/Location
Rock County Sheriff's Office MN
1000 N Blue Mound Ave
Luverne, MN 56156
Contact
Emergency: 9-1-1
Non-emergencies: 507-283-5000