Tornadoes, hail, floods and severe storms recorded here between 1951 and 2025, from NOAA's Storm Events Database. Search an address to see which tornadoes came closest to it.
The part of each tornado’s path NOAA recorded in this county, 29 in all. Zoom in and the paths widen to their surveyed width.
Hover or tap a bar to see that year.
NOAA's storm database records tornadoes back to 1950 and hail and thunderstorm wind back to 1955, but floods only from 1996 on. Older floods are missing here. For those, the U.S. Geological Survey's stream gauge records and flood reports are the place to look.
The strongest tornadoes, deadliest events and biggest damage here, up to 50.
August 15, 2025 · Sioux, Nebraska
Mesonet station in MONTROSE reported 68mph wind gusts between 424 and 524pm. This site only reports every hour.
August 4, 2025 · Sioux, Nebraska
A DOT sensor reported a 62 mph wind gust 18 miles north-northeast of Harrison.
June 28, 2025 · Sioux, Nebraska
Mesonet station northeast of Agate Nebraska.
June 13, 2025 · Sioux, Nebraska
Trained spotter reported quarter sized hail in Sioux County.
August 2, 2024 · Sioux, Nebraska
July 27, 2024 · Sioux, Nebraska
RAWS mesonet station Montrose (MTRN1) measured wind gust.
July 17, 2024 · Sioux, Nebraska
July 12, 2024 · Sioux, Nebraska
Measured wind gust from sensor along Highway 71 near the South Dakota border.
July 3, 2024 · Sioux, Nebraska
June 20, 2024 · Sioux, Nebraska
A trained weather spotter measured a wind gust to 85 MPH 5 miles NE of Morrill.
June 20, 2024 · Sioux, Nebraska
An estimated wind gust to 80 MPH was reported 5 miles NE of Morrill.
June 10, 2024 · Sioux, Nebraska
The Montrose RAWS sensor recorded a wind gust to 75 MPH.
May 17, 2024 · Sioux, Nebraska
RAWS mesonet station Montrose (MTRN1) reported maximum wind gust.
September 22, 2023 · Sioux, Nebraska
The public reported golf ball sized hail in the town of Harrison.
September 22, 2023 · Sioux, Nebraska
The public reported golf ball sized hail 21 miles WNW of Fort Robinson. Received via mPING.
September 22, 2023 · Sioux, Nebraska
Tennis ball sized hail was reported by a Storm Chaser in the town of Harrison.
September 22, 2023 · Sioux, Nebraska
The public reported ping-pong ball sized hail 11 miles WNW of Marsland. Received via mPING.
July 19, 2023 · Sioux, Nebraska
Received photo of ground covered in ping pong to golf ball size hail.
July 19, 2023 · Sioux, Nebraska
July 19, 2023 · Sioux, Nebraska
July 19, 2023 · Sioux, Nebraska
July 19, 2023 · Sioux, Nebraska
Received report via mPING.
July 13, 2023 · Sioux, Nebraska
Report for golf ball sized hail 11 miles north northwest of Fort Robinson.
July 6, 2023 · Sioux, Nebraska
Large tree branch greater than 6 inches broke and fell on house due to thunderstorm wind. Time estimated via radar.
July 6, 2023 · Sioux, Nebraska
July 3, 2023 · Sioux, Nebraska
Trained spotter estimated 60 mph wind gust.
June 28, 2023 · Sioux, Nebraska
June 26, 2023 · Sioux, Nebraska
A trained weather spotter located 22 miles NNE of Harrison reported estimated wind gusts of greater than 60 MPH. A South Dakota State University sensor near Ardmore, SD, just north of the NE/SD state line also recorded a wind gust to 63 MPH.
June 21, 2023 · Sioux, Nebraska
A trained weather spotter reported quarter sized hail at his location approximately 10 miles northwest of Agate Fossil Beds National Monument.
June 20, 2023 · Sioux, Nebraska
Golf ball sized hail was reported by a trained weather spotter located 11 miles SE of Harrison.
July 5, 2022 · Sioux, Nebraska
Very large hail reported approximately 10 miles southwest of Agate. Largest stones measured at 4.3 inches in diameter.
June 20, 2022 · Sioux, Nebraska
Received report on Facebook.
June 20, 2022 · Sioux, Nebraska
June 20, 2022 · Sioux, Nebraska
June 12, 2022 · Sioux, Nebraska
July 17, 2021 · Sioux, Nebraska
Montrose sensor measured the reported wind gust.
July 9, 2021 · Sioux, Nebraska
July 9, 2021 · Sioux, Nebraska
July 9, 2021 · Sioux, Nebraska
July 4, 2021 · Sioux, Nebraska
June 18, 2021 · Sioux, Nebraska
June 18, 2021 · Sioux, Nebraska
June 18, 2021 · Sioux, Nebraska
June 18, 2021 · Sioux, Nebraska
June 18, 2021 · Sioux, Nebraska
Brief gustnado was observed and captured on video. No damage reported and winds are estimated.
June 13, 2021 · Sioux, Nebraska
June 13, 2021 · Sioux, Nebraska
June 13, 2021 · Sioux, Nebraska
Observer estimated reported winds and noted that residence's dog house was blown away. Thunderstorm dropped pea size hail and precipitation accumulation of 0.10 inches.
June 10, 2021 · Sioux, Nebraska
Winds measured by observation station MTRN1 at Montrose.
May 26, 2021 · Sioux, Nebraska