THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 421 TO INCLUDE THE FOLLOWING AREAS UNTIL 2 AM CDT SUNDAY IN IOWA THIS WATCH INCLUDES 2 COUNTIES IN NORTHWEST IOWA CLAY DICKINSON THIS INCLUDES THE CITIES OF ARNOLDS PARK, MILFORD, SPENCER, AND SPIRIT LAKE.

SEVERE THUNDERSTORM WATCH 421 REMAINS VALID UNTIL 2 AM CDT SUNDAY FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 3 COUNTIES IN NORTHWEST IOWA BUENA VISTA CLAY DICKINSON THIS INCLUDES THE CITIES OF ARNOLDS PARK, MILFORD, SPENCER, SPIRIT LAKE, AND STORM LAKE.

SEVERE THUNDERSTORM WATCH 421 REMAINS VALID UNTIL 2 AM CDT SUNDAY FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 3 COUNTIES IN NORTHWEST IOWA BUENA VISTA CLAY DICKINSON THIS INCLUDES THE CITIES OF ARNOLDS PARK, MILFORD, SPENCER, SPIRIT LAKE, AND STORM LAKE.

FFWFSD The National Weather Service in Sioux Falls has issued a * Flash Flood Warning for. Central Dickinson County in northwestern Iowa. * Until midnight CDT tonight. * At 933 PM CDT, Emergency management reported thunderstorms producing heavy rain and street flooding in Spirit Lake. Between 2 and 3 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is already occurring. HAZARD. Flash flooding caused by thunderstorms. SOURCE. Emergency management reported. 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. Spirit Lake, Milford, Arnolds Park, Okoboji, Orleans, Wahpeton and West Okoboji.