Two disturbances sliding across the Northern Plains resulted in fairly widespread moderate rainfall from October 9-11. 00 inches throughout the basin on saturated soils.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS FSD wrote it up.
Two disturbances sliding across the Northern Plains resulted in fairly widespread moderate rainfall from October 9-11. Another episode of minor to moderate flooding ensued with rain totaling from 1.50 to 2.00 inches throughout the basin on saturated soils.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Sioux Falls, SD wrote its last area forecast discussion before the first event at Oct 9, 5:34 PM CST, 2 hours 26 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service Sioux Falls SD 557 AM CDT Tue Oct 9 2018 IAZ014-021-022-032-101100- Clay IA-Cherokee-Buena Vista-Ida- 557 AM CDT Tue Oct 9 2018 This Hazardous Weather Outlook is for portions of northwest Iowa and west central Iowa. .DAY ONE...Today and Tonight Rainfall is expected to become more widespread today, with potential for a few thunderstorms at times with brief heavier rainfall this afternoon through the evening. Rainfall could begin to cause problems with ponding in urban and poor drainage areas along with rises in small streams. Overall, rainfall amounts have trended downward, with perhaps an inch or little more on average with potential for locally up to two inches. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Rainfall amounts from today and tonight may lead to renewed river and stream flooding in more sensitive river basins. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. IAZ001>003-012-013-020-031-MNZ071-072-080-081-089-090-097-098- NEZ013-014-SDZ040-055-056-060>062-065>071-101100- Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Plymouth-Woodbury- Lincoln MN-Lyon MN-Murray-Cottonwood-Nobles-Jackson-Pipestone- Rock-Dixon-Dakota-Brookings-Lake-Moody-Hanson-McCook-Minnehaha- Hutchinson-Turner-Lincoln SD-Bon Homme-Yankton-Clay SD-Union- 557 AM CDT Tue Oct 9 2018 This Hazardous Weather Outlook is for portions of northwest Iowa, west central Iowa, southwest Minnesota, northeast Nebraska, east central South Dakota, and southeast South Dakota. .DAY ONE...Today and Tonight Rainfall is expected to become more widespread today, with potential for a few thunderstorms and some periods of heavier rainfall this afternoon and evening, mainly east of Interstate 29. However, the potential rainfall amounts have tapered off somewhat toward northwest Iowa and southwest Minnesota, with average amounts expected around an inch. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Temperatures will drop into the upper 20s to around 30 on Wednesday and Thursday nights. These cold conditions will threaten any sensitive vegetation. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. SDZ039-053-054-058-059-063-064-101100- Kingsbury-Sanborn-Miner-Aurora-Davison-Charles Mix-Douglas- 557 AM CDT Tue Oct 9 2018 This Hazardous Weather Outlook is for portions of east central South Dakota, south central South Dakota, and southeast South Dakota. .DAY ONE...Today and Tonight Periods of rainfall are expected to develop by early this afternoon. Rain will mix with and change to snow west of the James River late tonight, with potential accumulating snow before daybreak. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Light snowfall will continue through midday Wednesday, with total accumulations up to and inch or two, greatest west of the James River. Temperatures will drop into the upper 20s to around 30 on Wednesday and Thursday nights. These cold conditions will threaten any sensitive vegetation. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. SDZ038-050-052-057-101100- Beadle-Gregory-Jerauld-Brule- 557 AM CDT Tue Oct 9 2018 This Hazardous Weather Outlook is for portions of central South Dakota, east central South Dakota, and south central South Dakota. .DAY ONE...Today and Tonight Periods of rainfall are expected to develop by this afternoon and continue into tonight. Rain will mix with and change to snow after midnight, with potential for a couple inches accumulation by morning. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Light snowfall will continue through midday Wednesday, with total accumulations up to around three inches, greatest at higher elevation locations of Jerauld, far western Beadle, northwest Brule and Gregory counties. Temperatures will drop into the mid 20s to around 30 on Wednesday and Thursday nights. These cold conditions will threaten any sensitive vegetation. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The national radar mosaic for the moment the first event began.
9 flood. Local standard time, as filed.
Minor flooding of agricultural land occurred as well as inundation of the city park in Sioux Rapids as the Little Sioux River at Linn Grove (gage site LNNI4) crested 1.0 feet above flood stage on October 14.
Minor flooding of agricultural land occurred as well as inundation of the city park in Sioux Rapids as the Little Sioux River at Linn Grove (gage site LNNI4) crested 1.0 feet above flood stage on October 14.
Minor flooding of agricultural land occurred as well as inundation of the city park in Sioux Rapids as the Little Sioux River at Linn Grove (gage site LNNI4) crested 1.0 feet above flood stage on October 14.
Minor flooding of low-lying crop and pasture land occurred at river levels crested at 0.3 feet above flood stage on Waterman Creek near Sutherland (gage site SWCI4) on October 10.
Water reached 190th Avenue near 240th Street, and low-lying agricultural lands were flooded as the Little Sioux River near Milford (gage site MIFI4) crested 1.1 feet above flood stage on October 14.
Water reached 190th Avenue near 240th Street, and low-lying agricultural lands were flooded as the Little Sioux River near Milford (gage site MIFI4) crested 1.1 feet above flood stage on October 14.
Minor flooding of the city park and agricultural land near Spencer occurred as the Little Sioux River at Spencer (gage site SPWI4) crested 1.9 feet above flood stage on October 12.
Minor flooding of agricultural land occurred northwest of Spencer as the Little Sioux River above Spencer (gage site SPII4) crested 0.9 feet above flood stage on October 15.
Low-lying crop and pasture land was flooded between Everly and Spencer as river levels crested at 0.9 feet above flood stage on the Ocheyedan River near Spencer (gage site SPOI4) on October 11.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2018Every state in 2018This day in weather historyWarnings in Iowa, October 2018
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 786717, 786718, 786719, 786710, 786712, 786713, 786716, 786715, 786707.