Enter any address in Platte County, Wyoming to see its FEMA flood zone
Flash flooding from thunderstorms dominates Platte County's flood events. Between 2000 and 2023, NOAA Storm Events data recorded 25 flash flood events compared to 6 general flood events. Recent examples include localized flash flooding observed on June 21, 2024, along the Platte and Laramie County line, and flash flooding reported on June 22, 2023, across parts of the southeast Wyoming high plains.
While National Flood Insurance Program (NFIP) claims in Platte County are infrequent, one claim in Zone X_Unshaded, an area typically considered to have a moderate flood risk, resulted in an average water depth of 1.0 foot. Homeowners in areas prone to rapid runoff from heavy rainfall, particularly those near drainage paths or in lower-lying terrain, should pay close attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
11 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Platte County, Wyoming has recorded 31 flood-related events since 1996 according to NOAA's Storm Events Database, including 25 flash floods and 6 river or area floods. The county has received 8 federal disaster declarations, 2 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (2000–2024)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Pleasant Valley Fire | Fire | Jul 30, 2024 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms And Flooding | Flood | May 24, 2015 |
| Arapahoe Fire | Fire | Jun 29, 2012 |
| Severe Storms, Flooding, And Landslides | Severe Storm | May 18, 2011 |
| Flooding | Flood | Jun 4, 2010 |
| Severe Winter Storm | Severe Storm | Oct 31, 2000 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jun 2, 2025 | 10.00K |
| Flash Flood | Jun 21, 2024 | 0.00K |
| Flash Flood | Jun 22, 2023 | 0.00K |
| Flash Flood | Jun 21, 2023 | 0.00K |
| Flash Flood | Jul 30, 2021 | 0.00K |
| Flash Flood | May 26, 2019 | 0.00K |
| Flash Flood | Aug 20, 2019 | 0.00K |
| Flash Flood | Aug 7, 2019 | 0.00K |
| Flood | May 28, 2018 | 0.00K |
| Flash Flood | Aug 18, 2016 | 0.00K |
Flash Flood — Jun 2, 2025
A strong cold front pushed across Wyoming and into the high plains the evening of June 2nd. Scattered thunderstorms developed ahead and near the cold front and moved east and southeast into western Nebraska. Large hail and strong damaging winds were reported with these thunderstorms.
Flash Flood — Jun 21, 2024
Scattered to numerous thunderstorms developed along the Laramie Range during the mid afternoon hours on 6/21. A couple of storms became strong to marginally severe, producing quarter sized hail and wind gusts up to 60 MPH to the south of Chugwater along the Platte and Laramie County line. Localized flash flooding was also observed.
Flash Flood — Jun 22, 2023
Severe storms developed across the southeast Wyoming high plains the afternoon of 22 June 2023. Storms produced heavy rain resulting in flash flooding for parts of the plains and a tornado near Chugwater, Wyoming.
Flash Flood — Jun 21, 2023
Showers and thunderstorms initially developed over the higher terrain of the Laramie Range late in the afternoon on 6/21, rapidly increasing in both coverage and intensity as they tracked slowly eastward through the evening. This activity evolved into a large, slow moving cluster of moderate to heavy rain and embedded thunderstorms, with pockets of small to marginally severe (quarter to half do...
Flash Flood — Jul 30, 2021
Strong thunderstorm moved close to the town of Chugwater dropping up to two inches of rainfall contributing to flooding along Iron Mountain Road.
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 Platte 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 Platte 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.