Enter any address in Weston County, Wyoming to see its FEMA flood zone
Flash flooding from summer thunderstorms dominates Weston County's flood character. Between 1993 and 2023, the NOAA Storm Events Database recorded 14 flash flood events and 6 general flood events. For example, on June 30, 2019, thunderstorms produced two to four inches of rain across eastern Weston County, leading to flash flooding from heavy runoff. Earlier, on June 25, 2015, one to three inches of rain caused flooding that washed out roads in southern Weston County.
While flood insurance claims are infrequent, one National Flood Insurance Program claim in Zone A, the most common high-risk flood zone, averaged a payout of $1,174 with an average water depth of 0.0 feet. Residents in areas prone to flash flooding, particularly those near drainage paths or in low-lying areas, should pay close attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
1 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Weston County, Wyoming has recorded 20 flood-related events since 1996 according to NOAA's Storm Events Database, including 14 flash floods and 6 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 |
| Oil Creek Fire | Fire | Jul 1, 2012 |
| Severe Storms, Flooding, And Landslides | Severe Storm | May 18, 2011 |
| Elk Mountain Fire Complex - 08/01/01 | Fire | Jul 31, 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 | Aug 10, 2019 | 0.00K |
| Flash Flood | Aug 10, 2019 | 25.00K |
| Flood | Jul 3, 2019 | 10.00K |
| Flood | May 29, 2018 | 0.00K |
| Flood | Jun 25, 2015 | 0.00K |
| Flash Flood | Jun 25, 2015 | 30.00K |
| Flash Flood | Jun 17, 2015 | 0.00K |
| Flash Flood | Jun 10, 2015 | 0.00K |
| Flash Flood | Jul 28, 2013 | 100.00K |
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 — Aug 10, 2019
A slow moving severe thunderstorm produced large hail and heavy rain in the Newcastle area.
Flash Flood — Aug 10, 2019
A slow moving severe thunderstorm produced large hail and heavy rain in the Newcastle area.
Flood — Jul 3, 2019
Thunderstorms with heavy rain produced flooding over portions of southeastern Weston County.
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.
Source: NOAA National Weather Service Storm Events Database.
Source: OpenFEMA NFIP Individual Claims (2.25M records analyzed).
FEMA assigns flood zone designations to areas in Weston 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 Weston 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.