Flood Warning Issued for Navarro River in Mendocino County; Highway 128 Closure Expected
This alert is no longer in effect.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).
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The National Weather Service has issued a Flood Warning for the Navarro River in Mendocino County through Wednesday morning, with minor flooding expected to close Highway 128.
Read this weather record in 30 seconds
- Record type
- Flood Warning
- Affected area
- Mendocino, CA
- Issued
- April 6, 2026
- Issuing authority
- NWS Eureka CA
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 Mendocino, CA.
Alert Details
The National Weather Service in Eureka has issued a Flood Warning for the Navarro River at Navarro in Mendocino County. The warning is in effect until 7:00 AM PST Wednesday, February 25.
Affected Areas
The warning specifically affects the Navarro River at Navarro in Mendocino County. Impacted locations include Highway 128, approximately five miles east of Highway 1.
What You Should Do
Motorists are advised to "Turn around, don't drown" when encountering flooded roads, as most flood deaths occur in vehicles. Do not attempt to drive around barricades or through flooded areas. Travelers should use alternate routes as the closure of Highway 128 is certain once the river reaches flood stage. Exercise extreme caution at night when flood hazards are more difficult to identify.
Expected Conditions
Minor flooding is forecast for the region. At 7:15 PM PST Tuesday, the river stage was recorded at 20.5 feet. The river is expected to rise above the flood stage of 23.0 feet late Tuesday evening, reaching a crest of 26.5 feet just after midnight. At the 23.0-foot mark, flooding of Highway 128 is certain, and the road will be closed. This forecast crest of 26.5 feet is comparable to a historical crest of 26.7 feet recorded in March 2011.
Timeline
- Effective Period: Tuesday evening through 7:00 AM PST Wednesday.
- Flood Stage Onset: Late Tuesday evening.
- Peak Crest: Just after midnight tonight.
- Recession: The river is expected to fall below flood stage on Wednesday morning.
Original source: NOAA Official Notice ↗
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