Flood Warning Issued for Cowlitz River at Castle Rock in Cowlitz County
This alert is no longer in effect.
NOAA issued it on April 6, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
The National Weather Service has issued a Flood Warning for the Cowlitz River at Castle Rock, with minor flooding expected to impact roads and agricultural lands through Saturday afternoon.
Read this weather record in 30 seconds
- Record type
- Flood Warning
- Affected area
- Cowlitz County, Washington
- Issued
- April 6, 2026
- Issuing authority
- NWS Portland OR
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Cowlitz County, Washington.
Alert Details
The National Weather Service in Portland, OR, has issued a Flood Warning for the Cowlitz River at Castle Rock. The alert was issued following observations that the river is approaching minor flood stage levels.
Affected Areas
This warning specifically affects Cowlitz County, Washington, with the primary impact zone located along the Cowlitz River at Castle Rock.
What You Should Do
Residents and motorists in the affected area should adhere to the following safety guidelines:
- Motorists should not attempt to drive around barricades or drive through flooded areas.
- Exercise extreme caution at night when it is significantly harder to recognize the dangers of flooding.
- Remember the phrase: "Turn around, don't drown." Most flood-related deaths occur in vehicles.
Expected Conditions
Minor flooding is forecast for the region. At 1:30 AM PDT Saturday, the river stage was recorded at 47.7 feet, which is above the bankfull stage of 46.0 feet. The river is forecast to rise above the 48.0-foot flood stage to a peak of 48.6 feet early this morning. At these levels, flooding is expected to impact several roads and low-lying agricultural lands in areas not protected by levees.
Timeline
The Flood Warning is effective as of early Saturday morning, March 14, and remains in effect until further notice. Current forecasts indicate the river will rise above flood stage early this morning and fall back below flood stage by early Saturday afternoon.
Original source: NOAA Official Notice ↗
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