Alert archive / California / River Flood Warnings in 2025

River Flood Warning 2, NWS San Francisco Bay Area, CA

February 4, 2025Napa County, California

NWS San Francisco Bay Area, CA issued this river flood warning at Feb 4, 2025, 6:57 PM PST for Napa County, California. It took effect at Feb 4, 2025, 7:32 PM PST. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Feb 4, 2025, 6:57 PM PST (02:57 UTC)
In effect from: Feb 4, 2025, 7:32 PM PST
Expired: Feb 4, 2025, 11:41 PM PST
In force: 4 hr
Issued by: NWS San Francisco Bay Area, CA
Area: Storm-based polygon
Flood severity: Major

County Napa County, CA

The radar

The Sacramento radar (KDAX), 57 km from the middle of the area, began a volume at 02:58 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 Napa River near Napa (APCC1). The gauge peaked at 24.27 ft at Feb 4, 2025, 10:00 PM PST.

Action stage: 22 ft
Minor stage: 25 ft
Moderate stage: 26 ft
Major stage: 28 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 11458000, 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 warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Francisco Bay Area, CA wrote its last area forecast discussion before this river flood warning went out at Feb 4, 3:54 PM PST, 3 hours 3 minutes earlier.

Area forecast discussion, Feb 4, 3:54 PM PST, 3 hours 3 minutes before

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In the hours before

Local storm report, Feb 4, 6:33 PM PST, 24 minutes before

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<body>
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    <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.
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      <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, Feb 4, 6:45 PM PST, 12 minutes before

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    <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.
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      <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, Feb 4, 6:47 PM PST, 10 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>
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Local storm report, Feb 4, 6:48 PM PST, 9 minutes before

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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>
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Local storm report, Feb 4, 6:51 PM PST, 6 minutes before

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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, Feb 4, 6:52 PM PST, 5 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 San Francisco Bay Area, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 4, 4:13 PM PST	Special Marine Warning	MTR		17 min
Feb 4, 4:24 PM PST	Severe Thunderstorm Warning	MTR	San Mateo, Santa Clara	21 min
Feb 4, 5:33 PM PST	Special Weather Statement	MTR	Santa Cruz	27 min
Feb 4, 6:01 PM PST	Special Weather Statement	MTR	Santa Cruz	44 min
Feb 4, 7:05 PM PST	River Flood Warning	MTR	Napa	5 hr
Feb 4, 8:38 PM PST	Small Craft Advisory	MTR		6 hr
Feb 5, 2:38 AM PST	Small Craft Advisory	MTR		48 hr
Feb 5, 9:57 AM PST	Frost Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, Sonoma	19 hr
Feb 5, 12:36 PM PST	Flood Watch	MTR	Marin, Napa, Sonoma	41 hr
Feb 5, 2:12 PM PST	Gale Warning	MTR		37 hr
Feb 5, 2:12 PM PST	Small Craft Advisory	MTR		19 hr

Nearby

River Flood Warnings in California, 2025 Every river flood warning in 2025

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.