Enter any address in Crook County, Wyoming to see its FEMA flood zone
Flash flooding from summer thunderstorms is the dominant flood character in Crook County, Wyoming. Between 1993 and 2023, NOAA data recorded 8 flash flood events and 13 flood events. For example, on June 30, 2019, thunderstorms produced two to four inches of rain across parts of Crook County, leading to flash flooding. Minor flooding also occurred along the Belle Fourche River due to ice jams and snowmelt in March and April 2019.
Residents with properties located in flood zones, particularly those near rivers or in areas prone to flash flooding from heavy rainfall, should pay the most attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
2 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Crook County, Wyoming has recorded 21 flood-related events since 1996 according to NOAA's Storm Events Database, including 8 flash floods and 13 river or area floods. The county has received 7 federal disaster declarations, 1 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1978–2020)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms, Flooding, And Landslides | Severe Storm | May 18, 2011 |
| Thorn Divide Fire Complex | Fire | Jul 13, 2006 |
| Wy - Mcfarland Divide Fire - 09/06/01 | Fire | Sep 5, 2001 |
| Severe Winter Storm | Severe Storm | Oct 31, 2000 |
| Severe Storms, Flooding & Mudslides | Flood | May 29, 1978 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jun 30, 2019 | 0.00K |
| Flood | Mar 28, 2019 | 0.00K |
| Flood | Apr 1, 2019 | 0.00K |
| Flood | May 29, 2018 | 0.00K |
| Flood | Jul 17, 2018 | 0.00K |
| Flash Flood | Jul 17, 2018 | 0.00K |
| Flood | Jul 27, 2017 | 1.00K |
| Flash Flood | Jun 17, 2015 | 5.00K |
| Flash Flood | Jul 22, 2014 | 0.00K |
| Flood | May 31, 2013 | 60.00K |
Flash Flood — Jun 30, 2019
On the afternoon of June 30, thunderstorms with heavy rain moved through parts of northeastern Wyoming. Two to four inches of rain fell across southeast Crook and eastern Weston Counties. Runoff from the heavy rain caused flash flooding.
Flood — Mar 28, 2019
Minor flooding occurred along the Belle Fourche River in parts of Crook County due to ice jams and snowmelt.
Flood — Apr 1, 2019
Minor flooding occurred along the Belle Fourche River in parts of Crook County due to ice jams and snowmelt.
Flood — May 29, 2018
Several days of thunderstorms that produced heavy rainfall saturated the soils across portions of Crook and Weston Counties. Runoff eventually caused minor flooding in some areas.
Flood — Jul 17, 2018
Slow moving severe thunderstorms moved southeast from Montana across northern Crook County. The storms produced strong wind gusts and heavy rain, which caused flooding.
Source: NOAA National Weather Service Storm Events Database.
FEMA assigns flood zone designations to areas in Crook County, Wyoming:
AE High Risk — 1% annual chance of flooding. Insurance required.
VE Very High Risk — Coastal flooding with wave action.
X (Shaded) Moderate Risk — 500-year floodplain.
X Low Risk — Outside major floodplains.
Properties in Crook County, Wyoming that are in FEMA-designated Special Flood Hazard Areas (zones A and V) with federally backed mortgages are required to carry flood insurance.
Even outside high-risk zones, flood insurance is recommended. From 2014 to 2024, nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area.
Visit FloodSmart.gov to find an agent and get a quote.