Severe Weather Update #2 - June 17

The weak boundary is responsible for several ongoing tornadic storms over north-central and northeast Iowa as well as southern Minnesota. Currently Chickasaw county has a tornado warned storm that has produced a tornado before within the past hour, and this storm may continue to produce tornadoes as it moves to the southeast. Another, perhaps more dangerous storm, is moving into Mitchell and Howard counties in Iowa. This storm has produced a large and dangerous tornado that is responsible for injuries across Austin, MN and nearby areas. These storms are likely to continue to be tornadic in nature for at least the next hour or two. After which the instability may begin to weaken in those areas and we may see the storms weaken... Persons in those areas should be very aware of the conditions and take shelter if any storms approach.

Additional thunderstorms have fired across northeast Nebraska and into southeast South Dakota. Given environmental conditions ahead of these thunderstorms, they are likely to maintain a severe weather threat into the overnight hours. Areas of west-central and northwest Iowa are likely to see these storms as they have the potential to produce significant severe weather. Additional updates are likely as storms continue to threaten areas of the state.