Flood Warning Issued for Nehalem River in Tillamook and Clatsop Counties

Source: NOAA · Northwest Oregon

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NWS Portland has issued a flood warning for the Nehalem River near Foss, forecasting minor flooding of low-lying farmland and structures through Saturday morning.

What this NWS weather alert tells you, and what most readers miss

This notice was issued by NOAA on March 28, 2026 and geographically references Northwest Oregon. Its severity classification of "high" signals how the issuing agency weighs the risk of harm if no action is taken — "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to — Weather Alerts — determines the regulatory framework behind it, which shapes what remedies (refunds, replacements, recalls, evacuations) are available to affected individuals and who holds statutory responsibility for enforcement.

Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to read it as a data point about the issuing system: how quickly NOAA detected the hazard, how precise the geographic or product-identifier scope is, and whether similar notices have clustered in the same category or region in the last 90 days. Cluster patterns frequently precede a broader regulatory action — a single localized NWS weather alert is isolated; three of them within a quarter often indicate a supply-chain, infrastructure, or seasonal driver that will keep producing notices until something structural changes.

For decision-making, Areazine pairs each alert with the original agency URL, the full agency name, and a timestamp so you can verify the notice against the primary source before acting on it. Tags on this item (weather, alert, FloodWarning, Oregon) map to related alerts in the same area of risk — browsing them together gives a clearer picture than any single notice alone, because the shape of an ongoing issue only becomes visible across multiple sequential alerts.

Alert Details

The National Weather Service in Portland, OR, has issued a Flood Warning for the Nehalem River near Foss. The warning was issued at 9:37 PM PDT on Friday, March 13, 2026, and remains in effect until further notice.

Affected Areas

The warning specifically impacts the following geographic regions in Oregon:

  • Tillamook County
  • Clatsop County

Expected Conditions

Minor flooding is forecast for the Nehalem River near Foss. As of 9:15 PM PDT Friday, the river stage was recorded at 14.6 feet. The official flood stage is 15.0 feet, while the bankfull stage is 13.0 feet.

The river is expected to rise above flood stage around midnight tonight, reaching a predicted crest of 15.2 feet late tonight. At levels above 15.0 feet, minor flooding of low-lying farmland and structures is expected. The river is projected to fall below flood stage on Saturday morning.

Timeline

  • Alert Effective: March 13, 2026, at 9:37 PM PDT
  • Flood Onset: Approximately midnight tonight
  • Expected Crest: Late tonight (15.2 feet)
  • Duration: The river is expected to recede below flood stage Saturday morning.
  • Next Statement: Scheduled for issuance by 5:00 AM PDT.

What You Should Do

Residents and motorists in the affected area should adhere to the following safety guidelines:

  • Turn around, don't drown: Never encounter flooded roads in a vehicle. Most flood-related deaths occur in vehicles.
  • Avoid Barricades: Motorists should not attempt to drive around barricades or through flooded areas.
  • Nighttime Safety: Be especially cautious at night when it is significantly harder to recognize the dangers of flooding.

Original source: NOAA Official Notice ↗

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Frequently Asked Questions

Common questions about this NWS weather alert.

What is this NWS weather alert about?
NWS Portland has issued a flood warning for the Nehalem River near Foss, forecasting minor flooding of low-lying farmland and structures through Saturday morning.
Which agency issued this alert?
This alert was issued by NOAA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects Northwest Oregon. Check with NOAA for the most current geographic scope.
Where can I find more Weather Alerts updates?
Browse the full Weather Alerts feed on Areazine at areazine.com/weather/ for the latest updates from NOAA and other agencies.