One product issued by NWS for: Rock Valley IA
Hazardous Weather Outlook
Hazardous Weather Outlook National Weather Service Sioux Falls SD 358 AM CDT Sun Jun 16 2024 IAZ001>003-012>014-MNZ071-072-080-081-089-090-097-098-SDZ038>040- 050-052>070-171000- Lyon-Osceola-Dickinson-Sioux-O`Brien-Clay-Lincoln-Murray- Cottonwood-Nobles-Jackson-Pipestone-Rock-Beadle-Kingsbury- Brookings-Gregory-Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora- Davison-Hanson-McCook-Minnehaha-Charles Mix-Douglas-Hutchinson- Turner-Bon Homme-Yankton- 358 AM CDT Sun Jun 16 2024 This Hazardous Weather Outlook is for portions of northwest Iowa, southwest Minnesota, central South Dakota, east central South Dakota, south central South Dakota, and southeast South Dakota. .DAY ONE...Today and Tonight Thunderstorms are expected late Sunday evening into Monday morning. Scattered strong to severe storms are possible, with the greatest risks of large hail up to and greater than 2 inches in diameter and 60 mph winds. Additionally, slow moving storms could produce locally heavy rainfall of 2 to 4 inches which could lead to flooding or brief flash flooding. There remains some uncertainty on where storms may develop. .DAYS TWO THROUGH SEVEN...Monday through Friday. Thunderstorms are expected to continue through at least early Monday afternoon. While some storms could still produce hail up to golf ball size, the greatest risk will come from locally heavy rain and potential flooding. Additional thunderstorms may begin to develop late Monday afternoon and Monday evening, with the greatest focus for storms west of the James River. Golf ball size hail and 60 mph winds may be possible in this activity. A very active weather pattern is likely through the next week, with several chances for thunderstorms capable of marginal severe weather and locally heavy rainfall. One slightly higher risk for severe storms may develop Tuesday afternoon and evening along and east of Interstate 29. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed late Sunday evening through mid- morning Monday. $$