Alert archive / California / River Flood Watches in 2026

River Flood Watch 1, NWS Eureka, CA

January 4, 2026Mendocino County, California

NWS Eureka, CA issued this river flood watch at Jan 4, 2026, 5:23 PM PST for Mendocino County, California. It took effect at Jan 5, 2026, 2:48 PM PST. It was in force for .

The area

The counties it named.

The facts

Issued: Jan 4, 2026, 5:23 PM PST (01:23 UTC)
In effect from: Jan 5, 2026, 2:48 PM PST
Expired: Jan 5, 2026, 12:25 PM PST
In force
Issued by: NWS Eureka, CA
Area: Storm-based polygon
Flood severity: None

County Mendocino County, CA

The radar

The Eureka (Bunker Hill) radar (KBHX), 139 km from the middle of the area, began a volume at 01:24 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Russian River near Hopland (HOPC1). The gauge peaked at 18.52 ft at Jan 5, 2026, 10:00 PM PST.

Minor stage: 15 ft
Moderate stage: 23 ft
Major stage: 26 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 11462500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Eureka, CA wrote its last area forecast discussion before this river flood watch went out at Jan 4, 4:07 PM PST, 1 hour 16 minutes earlier.

Area forecast discussion, Jan 4, 4:07 PM PST, 1 hour 16 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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In the hours before

Local storm report, Jan 4, 12:37 PM PST, 4 hours 46 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Jan 4, 12:42 PM PST, 4 hours 41 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Jan 4, 12:43 PM PST, 4 hours 40 minutes before

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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Special weather statement, Jan 4, 1:11 PM PST, 4 hours 12 minutes before

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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Local storm report, Jan 4, 1:37 PM PST, 3 hours 46 minutes before

<!doctype html>
<html lang="en">
<head>
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  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
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</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Local storm report, Jan 4, 1:45 PM PST, 3 hours 38 minutes before

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<html lang="en">
<head>
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  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Eureka, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 4, 7:51 PM PST	Special Weather Statement	EKA	Humboldt	24 min
Jan 4, 11:44 PM PST	Special Marine Warning	EKA		31 min
Jan 4, 11:45 PM PST	Special Marine Warning	EKA		30 min
Jan 4, 11:58 PM PST	Special Marine Warning	EKA		32 min
Jan 5, 12:10 AM PST	Special Marine Warning	EKA		35 min
Jan 5, 12:24 AM PST	Special Marine Warning	EKA		36 min
Jan 5, 12:47 AM PST	River Flood Watch	EKA	Mendocino	11 hr
Jan 5, 1:12 AM PST	Special Marine Warning	EKA		33 min
Jan 5, 2:56 AM PST	Small Craft Advisory	EKA		21 hr
Jan 5, 8:18 AM PST	Winter Weather Advisory	EKA	Del Norte, Trinity	5 hr
Jan 5, 11:33 AM PST	Coastal Flood Warning	EKA	Humboldt	2 hr
Jan 5, 12:16 PM PST	River Flood Warning	EKA	Mendocino	14 hr
Jan 5, 12:22 PM PST	River Flood Warning	EKA	Mendocino	23 hr
Jan 5, 2:23 PM PST	Areal Flood Advisory	EKA	Lake	9 hr

Nearby

River Flood Watches in California, 2026 Every river flood watch in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.