Severe Weather History


North Dakota Flash Flood History: 557 Recorded Events

557

Recorded events

50

Counties affected

5

Direct deaths

$164.2M

Property damage

North Dakota flash flood history: 557 recorded events across 50 counties between 1996 and 2025.

Decade by decade

North Dakota flash flood history by decade

North Dakota flash flood history: recorded events per decade
North Dakota flash flood history: recorded events per decade

The 2000s are the busiest decade on record with 316 reported flash flood events across North Dakota. Earlier decades are thinner because systematic reporting for this hazard expanded over time, not because the weather was calmer.

County ranking

Counties with the most flash flood events in North Dakota

RankCountyEventsDeathsDamageSpan
#1Grand Forks County542$18.1M1996–2025
#2Cass County500$106.4M1996–2025
#3Richland County440$278K1996–2016
#4Burleigh County220$10.5M1998–2025
#5Sargent County220$35K2000–2013
#6Benson County210$253K1997–2019
#7Stutsman County180$1.7M2004–2024
#8Ransom County181$26K2000–2022
#9Walsh County170$151K1996–2020
#10Ramsey County170$301K1997–2025
#11Barnes County170$485K1997–2025
#12Eddy County160$202K2000–2022
#13Nelson County150$2.3M2000–2019
#14Ward County150$6.5M2005–2012
#15Traill County140$311K2000–2022
#16Pembina County130$791K2001–2023
#17Steele County120$310K1996–2019
#18Wells County110$1.0M2006–2022
#19Rolette County90$213K1999–2009
#20Morton County90$2.1M1998–2025
#21LaMoure County80$1.2M1998–2021
#22Sioux County82$1.1M1998–2019
#23Towner County80$20K2000–2016
#24Dickey County80$1.4M2000–2018
#25Griggs County70$35K2000–2011
Source: NOAA/NCEI Storm Events · ranked by recorded event count

Significant events

Deadliest flash flood events in North Dakota

DateCountyScaleDeathsInjuries
Jun 13, 2000Grand Forks County—20
Jul 9, 2019Sioux County—22
Jun 20, 2013Ransom County—10
Source: NOAA/NCEI Storm Events · dates UTC

All hazards in North Dakota · Flash Flood across the U.S.