Severe thunderstorm warning for Pipestone, Rock counties

11:30 a.m. Tuesday

SIOUX FALLS, S.D. - The National Weather Service has issued a severe thunderstorm warning for south central Pipestone County and northwest Rock County until noon.

At 11:23 a.m. meteorologists were tracking a severe thunderstorm capable of producing quarter-sized hail. The storm was located six miles southeast of Jasper, or 11 mile northwest of Luverne, and moving north at 15 miles per hour.

The storm will be near Trosky around 11:55 a.m. Ihlen will also be impacted by the severe thunderstorm.

Severe thunderstorms produce damaging wind in excess of 60 miles per hour, destructive hail, deadly lightning and very heavy rain. The NWS advised people to move to an interior room on the lowest floor of a building. Heavy rains flood roads quickly, so do not drive into areas where water covers the road.

9:23 a.m. Tuesday

SIOUX FALLS, S.D. - The National Weather Service has issued a flash flood warning for Rock County and northwest Nobles County, set to expire at 11:30 a.m.

At 9:14 a.m., Doppler radar indicated thunderstorms with very heavy rainfall across the warned area. 1-2 inches of rain have fallen over the warned area in a short period of time, with rainfall rates of up to 2 inches per hour. An additional 1-2 inches of rain is expected to fall over the warned area.

Runoff from this excessive rainfall will cause flash flooding to occur. Some locations that will experience flooding include: Luverne, Beaver Creek, Blue Mounds State Park, Hardwick, Hills and Lismore.

Excessive runoff from heavy rain will cause flooding of small creeks and streams, highways and underpasses. Additionally, country roads and farmland along the banks of creeks, streams and other low-lying areas are subject to flooding.

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