Lead: Heavy, persistent rain in northwest Washington has pushed the Skagit and Nooksack river systems toward major crests, prompting Level 3 evacuation orders for Mount Vernon and upstream communities and evacuation notices for Sumas and Everson on Wednesday, Dec. 10. Officials warned residents to move to high ground immediately as forecasts show the Skagit and Nooksack reaching dangerous levels over the next 24–48 hours. Shelters and emergency resources are being activated while state and tribal leaders declared emergencies and mobilized response teams. The situation remains fluid and officials urged people to follow local evacuation directions and safety guidance.
Key Takeaways
- The Skagit River at Concrete is forecast to crest at 48.0 feet around 4 a.m. on Thursday, Dec. 11, and at Mount Vernon at 42.0 feet around 4 a.m. on Friday, Dec. 12, according to river forecasts.
- The Nooksack River is expected to crest at about 150.0 feet at 10 p.m. on Wednesday, Dec. 10, with the North Cedarville gauge expected to reach 150.08 feet at that time; Ferndale’s gauge is forecast to crest near 22.0 feet around 4 p.m. Thursday.
- South Fork Nooksack at Saxon Bridge was last observed at 6.49 feet and is forecast to peak near 10.81 feet at 10 p.m. Dec. 10 — a level classified as major flooding.
- Level 3 (leave immediately) evacuation orders affect Mount Vernon and upriver communities including Hamilton, Rockport, Marblemount and Concrete; Sumas and Everson officials issued evacuation notices and prepared sirens and shelters.
- Statewide emergency powers were activated by Gov. Bob Ferguson and the National Guard was mobilized; the Army Corps of Engineers assumed operational control of Ross Dam in anticipation of high inflows.
- Local impacts include clinic closures in Mount Vernon, park and pier closures in Whatcom County, nearly 400 Bellingham customers briefly without power, Amtrak suspending Seattle–Vancouver service Dec. 11–12, and community sandbagging operations.
Background
Western Washington is experiencing a prolonged period of heavy rainfall that shifted multiple river basins from action stages into minor, moderate and imminent major flood stages. The Skagit and Nooksack watersheds have complex flood-control systems—dikes, levees and managed reservoirs—designed to reduce risk, but forecasts showing crests several feet above prior records have alarmed local authorities. In 2021 and other prior events, the region saw inundation of towns, agricultural lands and infrastructure; those precedents inform current evacuation planning and dike operations.
Multiple jurisdictions are coordinating: county emergency management, city governments, tribal authorities, the Washington State Governor’s Office, the U.S. Army Corps of Engineers and utilities. The Corps has authority to operate Ross Dam flows when inflow triggers are met; Seattle City Light and the Corps worked this week to manage reservoir levels in anticipation of the inflow forecast. Tribal governments, including the Lummi Nation and Nooksack-affiliated authorities, are independently issuing emergency proclamations and standing up response teams for reservation communities.
Main Event
On Wednesday, Dec. 10, Skagit County officials issued Level 3 evacuation orders for Mount Vernon and several upriver communities—Hamilton, Rockport, Marblemount and Concrete—advising residents in the 100-year floodplain to move to high ground immediately. The city of Mount Vernon posted maps and directed residents to follow instructions from 911, police and fire authorities; the American Red Cross opened a shelter at First United Methodist Church, 1607 E Division St.
Whatcom County and cities along the Nooksack issued similar calls. By mid-afternoon Sumas posted a Go Alert saying flooding was imminent and urged immediate evacuation, warning that escape routes could be cut off once water reaches roadways. Everson staff and volunteers organized large sandbag operations at the city public works shop to distribute free sandbags to residents, with long lines reported.
Local services and facilities were affected as conditions deteriorated: Skagit Regional Health closed Riverbend and Station Square clinics Wednesday evening and will remain closed Thursday, while PeaceHealth hospitals and other providers maintained readiness with incident commands activated. Hovander Homestead Park in Ferndale and Little Squalicum Pier in Bellingham closed due to flooding and trail damage; Amtrak suspended Seattle–Vancouver service for Dec. 11–12 because of expected flooding on the corridor.
Infrastructure and utility impacts were reported throughout the day: nearly 400 Bellingham customers lost power near Northridge Park from an equipment failure, with repairs expected the same evening. County courts in Skagit closed non-essential services to prioritize emergency response, while essential operations—public safety, emergency management and road maintenance—remained active.
Analysis & Implications
The immediate risk is localized inundation of low-lying urban neighborhoods, farmland and critical facilities (hospitals, jails, care homes) as predicted crests approach. Forecast crest heights—48 feet at Concrete and 42 feet at Mount Vernon—would test levees and dikes; water seeping under or overtopping weaker segments is the primary failure mode emergency managers fear. Even where barriers hold, damage to roads, utilities and floodplain businesses is likely, disrupting transport and supply chains in Skagit and Whatcom counties.
Economic effects will be felt in agriculture and food distribution: dairy and crop operations near the Nooksack are vulnerable to inundation and access restrictions, complicating animal care and harvest logistics. Businesses in downtown Mount Vernon and riverfront districts face direct property risk; small enterprises now scrambling with sandbags and temporary closures may face prolonged recovery periods if floodwaters reach commercial floors or utilities fail.
At the state level, the governor’s emergency declaration and the Army Corps’ proactive reservoir management are steps to marshal resources rapidly. Federal approval of an expedited emergency declaration would unlock FEMA support and reimbursements—critical for cleanup and short-term housing. Long term, repeated severe events will increase focus on resilience investments: dike reinforcement, strategic buyouts in recurrently flooded areas, and updated land-use planning for floodplains.
Comparison & Data
| Gauge / Location | Forecast Crest | Expected Time | Most Recent Observation |
|---|---|---|---|
| Skagit River — Concrete | 48.0 ft | ~4 a.m., Thu, Dec. 11 | 29.82 ft at 1:15 p.m. (Dec. 10) |
| Skagit River — Mount Vernon | 42.0 ft | ~4 a.m., Fri, Dec. 12 | 27.14 ft at 12:15 p.m. (Dec. 10) |
| Nooksack — North Cedarville | 150.08 ft | 10 p.m., Wed, Dec. 10 | 146.8 ft at 2:15 p.m. (Dec. 10) |
| Nooksack — Ferndale | ~22.0 ft | ~4 p.m., Thu, Dec. 11 | Below action stage earlier Wed |
| South Fork Nooksack — Saxon Bridge | 10.81 ft (major) | 10 p.m., Wed, Dec. 10 | 6.49 ft last observed |
| Samish River — Burlington (flow) | 11,327.53 cfs | 10 p.m., Wed, Dec. 10 | 2,880 cfs as of midday Wed |
The table above shows forecast crest levels alongside recent gauge readings; several forecasts indicate rapid rises over a short window, which reduces lead time for local responses. Forecasts combine precipitation models, snowpack/inflow estimates and reservoir operations; small changes in rainfall timing or intensity can alter peak height and timing materially.
Reactions & Quotes
Local officials and community members expressed urgency while volunteers mobilized to protect homes and infrastructure.
“I have declared a statewide emergency, and I will be requesting an expedited emergency declaration from the federal government today. This situation is extremely serious. The next few days are critical.”
Gov. Bob Ferguson (official statement)
State leadership framed the event as requiring rapid federal coordination and additional resources; the governor also announced National Guard activation to support response operations.
“If it’s supposed to be 5 feet above that, I mean the water can just slip all the way down… Luckily we are up on the hill, so it’s just gonna smack my front door and then hopefully head on down.”
Gabriel Mercado, District Brewing owner, Mount Vernon (local business)
Business owners on the riverfront emphasized preparatory measures—sandbagging, sealing doors—but also noted the anxiety of potentially unprecedented water levels. Community volunteers and city crews worked side-by-side to fill sandbags and distribute them to vulnerable households.
Unconfirmed
- Whether any specific segment of the Skagit dike system will overtop has not been confirmed; managers are actively monitoring and reinforcing weak points.
- Claims that any particular hospital or correctional facility has been evacuated in full are unconfirmed; officials report facilities are monitoring and preparing but have not universally relocated patients or inmates.
- Forecasts that the Skagit River will definitively exceed the historical record crest remain subject to change as additional rainfall and inflow data are updated.
Bottom Line
The immediate priority is safety: residents in low-lying areas of Mount Vernon, Sumas, Everson and other river-adjacent communities should heed evacuation orders now and move to designated shelters or higher ground. Forecasts show rapid river rises over a short window, and travel routes may be cut off quickly once floodwaters reach roadways.
State and federal resources are being mobilized, but community-level preparedness—sandbagging, shutting off utilities if safe, and keeping a go-bag—remains essential. Over the coming 48 hours, the key indicators to watch are updated river crests from National Weather Service river gauges and official notices from county emergency management; those will determine whether additional areas require evacuation and the scale of recovery assistance needed.
Sources
- Cascadia Daily News — local news report with live updates and community reporting.
- National Weather Service — Advanced Hydrologic Prediction Service (AHPS) — federal river gauge forecasts and observations.
- Office of the Governor of Washington — official emergency declarations and state response (official).
- U.S. Army Corps of Engineers — federal water infrastructure operations (official).
- Puget Sound Energy outage map — utility outage information (utility).
- Lummi Nation — tribal government notices and emergency actions (tribal government).
- Amtrak Service Alerts — passenger rail service advisories (transportation).