Enter any address in Weld County, Colorado to see its FEMA flood zone
Flash flooding from summer thunderstorms is the dominant flood character in Weld County. Between 1993 and 2023, NOAA data recorded 42 flash flood events and 29 flood events, with two fatalities attributed to flooding. Recent events include flash flooding on July 31, 2025, where a dry creek bed filled with water several feet deep, and minor flooding reported in the Greeley area on July 24, 2025, associated with severe thunderstorms.
National Flood Insurance Program (NFIP) claims data from Weld County shows that properties in Zone A have experienced the most claims, with an average payout of $36,657 and an average water depth of 6.9 feet. Properties in Zone X and Zone X_Unshaded also have a history of claims, though with lower average payouts and water depths. Homeowners in Zone A, as well as those in Zone X_Unshaded and Zone X, should pay particular attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
28 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Weld County, Colorado has recorded 71 flood-related events since 1996 according to NOAA's Storm Events Database, including 42 flash floods and 29 river or area floods. The county has received 16 federal disaster declarations, 7 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1965–2020)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms, Flooding, Landslides, And Mudslides | Flood | Sep 11, 2013 |
| Severe Storms And Tornadoes | Severe Storm | May 22, 2008 |
| Hurricane Katrina Evacuation | Coastal Storm | Aug 29, 2005 |
| Snow | Snowstorm | Mar 17, 2003 |
| Wildfires | Fire | Apr 23, 2002 |
| Severe Winter Storms | Severe Storm | Apr 11, 2001 |
| Flooding 4/30/99 | Severe Storm | Apr 29, 1999 |
| Severe Storms, Heavy Rain, Flash Floods, Flooding, Mudslides | Flood | Jul 28, 1997 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jul 31, 2025 | 0.00K |
| Flood | Jul 24, 2025 | 0.00K |
| Flood | Aug 10, 2025 | 0.00K |
| Flood | May 28, 2024 | 0.00K |
| Flood | May 28, 2024 | 3.40M (1 deaths) |
| Flash Flood | Jun 20, 2024 | 0.00K |
| Flood | Aug 12, 2024 | 0.00K |
| Flood | Jun 30, 2023 | 0.00K (1 deaths) |
| Flood | May 11, 2023 | 1.00M |
| Flash Flood | Jun 11, 2023 | 50.00K |
Flash Flood — Jul 31, 2025
Strong to severe thunderstorms slowly moved across Weld County producing heavy rainfall and large hail. A storm chaser shared photos of a dry creek bed full of water running several feet deep across a road.
Flood — Jul 24, 2025
Severe Thunderstorms moved across Weld, Morgan, and Adams County. Most reports were from the Greeley area where hail reached 1.25 inches and minor flooding was reported.
Flood — Aug 10, 2025
Strong to severe thunderstorms develop across northeast Colorado. Large hail was the main impact. A brief tornado form east of Denver over the open plains. No damage was reported with the tornado. Numerous photos and reports were passed along to the National Weather Service.
Flood — May 28, 2024
Strong to severe thunderstorms over the eastern plains during the early to mid evening hours. Storms built northwestward to the Greeley around where it dump hail and heavy rain causing flooding in parts of Greeley. The downtown area and northeast parts of Greeley experience the heaviest rainfall and worst flooding. There was one death that is possibly is storm related. ���It was unknown a...
Flash Flood — Jun 20, 2024
A broken line of strong to severe thunderstorms tracked northeast across Weld County during the afternoon hours. Heavy rain and small hail were common with isolated strong winds and minor flooding reported.
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 Weld County, Colorado:
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 Weld County, Colorado 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.