Iona, SD Warnings, Watches and Advisories

Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Iona.

Use the Radar Maps link provided to understand the trajectory of a storm.

Red Flag Warning issued July 13 at 5:29AM MDT until July 14 at 9:00PM MDT by NWS Rapid City SD

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT TUESDAY DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FALL RIVER COUNTY AREA, NORTHERN FOOT HILLS, EASTERN FOOT HILLS, CUSTER COUNTY PLAINS, PINE RIDGE AREA, BUTTE COUNTY AREA, PERKINS COUNTY, WEST CENTRAL PLAINS, ZIEBACH COUNTY, HAAKON COUNTY AREA, AND BADLANDS AREA... ....RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT TUESDAY DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FALL RIVER COUNTY AREA, NORTHERN FOOT HILLS, EASTERN FOOT HILLS, CUSTER COUNTY PLAINS, PINE RIDGE AREA, BUTTE COUNTY AREA, PERKINS COUNTY, WEST CENTRAL PLAINS,ZIEBACH COUNTY, HAAKON COUNTY AREA, AND BADLANDS AREA... * AFFECTED AREA...Fire Weather Zones 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, and 332. * TIMING...Until 9 PM MDT Tuesday. * WINDS...South winds 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...Relative Humidity between 10 to 20 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended.

Heat Advisory issued July 13 at 5:29AM MDT until July 16 at 9:00PM MDT by NWS Rapid City SD

* WHAT...Heat index values between 95 and 105. * WHERE...Portions of northwestern, south central, and southwestern South Dakota and northeast Wyoming. * WHEN...Until 9 PM MDT /10 PM CDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Heat Advisory issued July 13 at 12:17AM CDT until July 16 at 10:00PM CDT by NWS Aberdeen SD

* WHAT...Heat index values up to 100 each afternoon. * WHERE...Portions of west central Minnesota and north central and northeast South Dakota. * WHEN...Until 10 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Extreme Heat Warning issued July 13 at 12:17AM CDT until July 16 at 10:00PM CDT by NWS Aberdeen SD

* WHAT...Prolonged dangerously hot conditions with heat index values up to 105 each afternoon. * WHERE...Campbell, Corson, Dewey, Potter, and Walworth Counties. * WHEN...Until 10 PM CDT /9 PM MDT/ Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Heat Advisory issued July 13 at 12:17AM CDT until July 16 at 10:00PM CDT by NWS Aberdeen SD

* WHAT...Heat index values up to 100 each afternoon. * WHERE...Buffalo, Hand, Hughes, Hyde, Jones, Lyman, Stanley, and Sully Counties. * WHEN...Until 10 PM CDT /9 PM MDT/ Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Red Flag Warning issued July 12 at 10:47PM CDT until July 13 at 9:00PM CDT by NWS Aberdeen SD

...FIRE WEATHER WATCH IS CANCELLED FOR CAMPBELL... ...RED FLAG WARNING IN EFFECT FROM 1 PM TO 8 PM MDT MONDAY DUE TO WIND AND LOW RELATIVE HUMIDITY FOR CORSON AND DEWEY... ... The National Weather Service in Aberdeen SD has issued a Red Flag Warning in effect from 1 PM to 8 PM MDT Monday. * AFFECTED AREA...In South Dakota, Corson and Dewey. * TIMING...From 1 PM to 8 PM MDT Monday. * WINDS...South winds 20 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...Relative Humidity between 18 to 22 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended.