Alert archive / California / River Flood Warnings in 2023

River Flood Warning 12, NWS San Francisco Bay Area, CA

March 10, 2023Monterey County, California

NWS San Francisco Bay Area, CA issued this river flood warning at Mar 10, 2023, 5:16 AM PST for Monterey County, California. It took effect at Mar 11, 2023, 12:00 AM PST. It was in force for 6 days.

The area

The counties it named.

The facts

Issued: Mar 10, 2023, 5:16 AM PST (13:16 UTC)
In effect from: Mar 11, 2023, 12:00 AM PST
Expired: Mar 16, 2023, 3:05 PM PDT
In force: 6 days
Issued by: NWS San Francisco Bay Area, CA
Area: Storm-based polygon
Flood severity: Minor

County Monterey County, CA

The radar

The San Francisco radar (KMUX), 115 km from the middle of the area, began a volume at 13:17 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 Salinas River near Bradley (BRDC1). The gauge peaked at 19.60 ft at Mar 11, 2023, 12:00 AM PST.

Action stage: 12 ft
Minor stage: 14 ft
Moderate stage: 20 ft
Major stage: 22 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 11150500, 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 Mar 10, 4:08 AM PST, 1 hour 8 minutes earlier.

Area forecast discussion, Mar 10, 4:08 AM PST, 1 hour 8 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <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>

In the hours before

Local storm report, Mar 10, 12:36 AM PST, 4 hours 40 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <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>

Local storm report, Mar 10, 1:23 AM PST, 3 hours 53 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <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>

Local storm report, Mar 10, 2:32 AM PST, 2 hours 44 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <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>

Local storm report, Mar 10, 2:53 AM PST, 2 hours 23 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <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>

Local storm report, Mar 10, 3:05 AM PST, 2 hours 11 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <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>

Local storm report, Mar 10, 3:07 AM PST, 2 hours 9 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <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
Mar 9, 6:17 PM PST	Areal Flood Advisory	MTR	Sonoma	25 hr
Mar 9, 11:51 PM PST	Flash Flood Warning Considerable damage threat	MTR	Santa Cruz	13 hr
Mar 10, 12:17 AM PST	Areal Flood Advisory	MTR	Alameda	21 hr
Mar 10, 12:57 AM PST	Areal Flood Advisory	MTR	Marin, Sonoma	18 hr
Mar 10, 1:10 AM PST	River Flood Warning	MTR	Napa	8 hr
Mar 10, 1:45 AM PST	Areal Flood Advisory	MTR	Monterey, Santa Clara, Santa Cruz	17 hr
Mar 10, 3:46 AM PST	Areal Flood Advisory	MTR	Monterey, San Benito, Santa Cruz	15 hr
Mar 10, 4:40 AM PST	Areal Flood Advisory	MTR	San Benito, Santa Clara, Santa Cruz	11 hr
Mar 10, 6:35 AM PST	Areal Flood Advisory	MTR	San Mateo, Santa Clara, Santa Cruz	9 hr
Mar 10, 6:45 AM PST	Areal Flood Warning	MTR	San Mateo, Santa Cruz	6 hr
Mar 10, 6:56 AM PST	Areal Flood Warning	MTR	Sonoma	35 hr
Mar 10, 7:18 AM PST	Areal Flood Warning	MTR	San Benito, Santa Clara	16 hr
Mar 10, 7:29 AM PST	Areal Flood Warning	MTR	Santa Cruz	6 hr
Mar 10, 7:43 AM PST	Areal Flood Warning	MTR	Marin, Sonoma	14 hr
Mar 10, 8:03 AM PST	Areal Flood Warning	MTR	San Benito, Santa Clara	16 hr
Mar 10, 8:46 AM PST	Small Craft Advisory	MTR		6 hr
Mar 10, 9:00 AM PST	Areal Flood Warning	MTR	Monterey	9 hr
Mar 10, 9:43 AM PST	River Flood Warning	MTR	Monterey, San Benito, Santa Clara, Santa Cruz	6 days
Mar 10, 11:00 AM PST	Areal Flood Advisory	MTR	Monterey, San Benito, Santa Clara, Santa Cruz	6 hr
Mar 10, 11:44 AM PST	Areal Flood Advisory	MTR	Monterey, San Benito	5 hr
Mar 10, 2:33 PM PST	Small Craft Advisory	MTR		13 hr
Mar 10, 3:56 PM PST	Areal Flood Warning	MTR	Monterey	3 hr

Nearby

River Flood Warnings in California, 2023 Every river flood warning in 2023

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.