Flood Warning Issued for Portions of Idaho and Southeast Washington Through Saturday Afternoon

Source: NOAA · Idaho and Southeast Washington

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The National Weather Service has issued a Flood Warning for Latah, Lewis, Nez Perce, Asotin, Garfield, and Whitman counties due to heavy rain and snowmelt.

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 Idaho and Southeast Washington. 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, Flood Warning, Idaho) 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 Spokane, WA, has issued a Flood Warning for portions of Idaho and Southeast Washington. This alert, which replaces a previous flood advisory, indicates that flooding caused by rain and snowmelt is imminent or occurring.

Affected Areas

The warning covers the following geographic regions:

  • Idaho Counties: Latah, Lewis, and Nez Perce
  • Washington Counties: Asotin, Garfield, and Whitman

Specific locations that will experience flooding include Lewiston, Pullman, Moscow, Clarkston, Lapwai, Colfax, Pomeroy, Genesee, Troy, Potlatch, Juliaetta, Deary, Craigmont, Nezperce, Culdesac, Winchester, Kendrick, Bovill, West Clarkston-Highland, and Clarkston Heights-Vineland.

What You Should Do

Residents in the affected areas should take immediate action to ensure their safety:

  • Turn around, don't drown: Do not attempt to drive through flooded roads. Most flood deaths occur in vehicles.
  • Move to higher ground: Act quickly to protect your life if you are in a flood-prone area.
  • Exercise caution at night: It is significantly harder to recognize the dangers of flooding after dark.
  • Report flooding: Please report observed flooding to local emergency services or law enforcement and request they pass the information to the National Weather Service when it is safe to do so.

Expected Conditions

Flooding is being driven by a combination of rain and snowmelt. As of 12:15 AM PDT, between 0.5 and 0.75 inches of rain have already fallen. Forecasters expect additional rainfall amounts of 0.25 to 0.75 inches through this afternoon. Impacts include the flooding of rivers, creeks, streams, and other low-lying locations, with many areas of slow-moving or standing water expected.

Timeline

The Flood Warning is effective immediately and will remain in place until 1:45 PM PDT on Saturday, March 14, 2026.

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?
The National Weather Service has issued a Flood Warning for Latah, Lewis, Nez Perce, Asotin, Garfield, and Whitman counties due to heavy rain and snowmelt.
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 Idaho and Southeast Washington. 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.