Enter any address in Mason County, Washington to see its FEMA flood zone
4 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Mason County, Washington has recorded 6 flood-related events since 1996 according to NOAA's Storm Events Database. The county has received 31 federal disaster declarations, 12 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1964–2025)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Severe Storms, Straight-line Winds, Flooding, Landslides, And Mudslides | Flood | Dec 9, 2025 |
| Severe Winter Storms, Straight-line Winds, Flooding, Landslides, And Mudslides | Severe Storm | Jan 5, 2024 |
| Mcewan Fire | Fire | Jul 4, 2023 |
| Severe Winter Storms, Snowstorms, Straight-line Winds, Floodin | Flood | Dec 26, 2021 |
| Severe Winter Storm, Straight-line Winds, Flooding, Landslides, And Mudslides | Severe Storm | Dec 29, 2020 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms, Flooding, Landslides, And Mudslides | Flood | Jan 20, 2020 |
| Severe Winter Storms, Straight-line Winds, Flooding, Landslides, Mudslides, Tornado | Severe Storm | Dec 10, 2018 |
| Severe Winter Storm, Straight-line Winds, Flooding, Landslides, Mudslides, And A T | Flood | Dec 1, 2015 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flood | Jan 13, 2021 | 5.44K |
| Flood | Jan 2, 2021 | 8.16K |
| Coastal Flood | Dec 17, 2012 | 2.00K |
| Flood | Dec 12, 2010 | 700.00K |
| Flood | Jan 7, 2009 | 900.00K |
| Flood | Dec 3, 2007 | 12.00K (1 deaths) |
Flood — Jan 13, 2021
The period from January 10 to 16 continued a pattern of a strong and persistent Aleutian Low pressure system in the eastern Pacific that began December 29, 2020 and which directed the jet stream and primary storm track at Washington State. This resulted in a series of atmospheric rivers and wind storms that battered Washington State. Water vapor transport into Washington State averaged 160-200...
Flood — Jan 2, 2021
From December 29 - January 16, a strong and persistent Aleutian Low pressure system developed in the eastern Pacific which directed the jet stream and primary storm track at Washington State that resulted in a rapid series of atmospheric rivers and wind storms that battered Washington State. Water vapor transport into Washington State averaged 160-200% of normal during the period from December ...
Coastal Flood — Dec 17, 2012
High astronomical tides coincided with low pressure to cause record high tide levels throughout Puget Sound. Many homes and yards along the shoreline were flooded.
Flood — Dec 12, 2010
The Stillaguamish River reached record level. There were several roads washed out in Kitsap county. 2 homes were damaged from mudslides.
Flood — Jan 7, 2009
Rainfall of 8-20 inches in the mountains and 1 to 9 inches in the lowlands occurred from Jan 6th through 8th. Flooding was widespread over much of Western Washington. Record flooding occurred on the Snoqualmie, Tolt, and North Fork Stillaguamish Rivers. Near record flooding occurred on the Snohomish, Newaukum, and Skookumchuck Rivers. Major flooding occurred on 18 rivers and 21 forecast po...
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 Mason County, Washington:
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 Mason County, Washington 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.