Severe Thunderstorm Warning until 12:30AM Tuesday 
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for... Southwestern Rock County in southwestern Minnesota... East central Minnehaha County in southeastern South Dakota...
* Until 1230 AM CDT.
* At 1143 PM CDT, a severe thunderstorm was located over Garretson, or 15 miles northeast of Sioux Falls, moving southeast at 20 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected.
* This severe thunderstorm will be near... Palisades State Park around 1150 PM CDT. Valley Springs around 1210 AM CDT. Beaver Creek around 1220 AM CDT.
* AFFECTED AREAS: ROCK, MN ... MINNEHAHA, SD
Instructions:
For your protection move to an interior room on the lowest floor of a building.
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