Alert archive / California / River Flood Warnings in 2018

River Flood Warning 1, NWS Sacramento, CA

March 21, 2018Amador County, El Dorado County, Sacramento County, California

NWS Sacramento, CA issued this river flood warning at Mar 21, 2018, 9:37 PM PDT for Amador County, El Dorado County, Sacramento County, California. It took effect at Mar 22, 2018, 3:34 PM PDT. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued: Mar 21, 2018, 9:37 PM PDT (04:37 UTC)
In effect from: Mar 22, 2018, 3:34 PM PDT
Expired: Mar 23, 2018, 8:00 AM PDT
In force: 16 hr
Issued by: NWS Sacramento, CA
Area: Storm-based polygon
Flood severity: Minor

Counties Amador County, CA, El Dorado County, CA, Sacramento County, CA

The radar

The Sacramento radar (KDAX), 73 km from the middle of the area, began a volume at 04:40 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 Cosumnes River at Michigan Bar (MHBC1). The gauge peaked at 11.87 ft at Mar 22, 2018, 4:00 PM PDT.

Action stage: 7 ft
Minor stage: 12 ft
Moderate stage: 16 ft
Major stage: 18 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 11335000, 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 Sacramento, CA wrote its last area forecast discussion before this river flood warning went out at Mar 21, 3:48 PM PDT, 5 hours 49 minutes earlier.

Area forecast discussion, Mar 21, 3:48 PM PDT, 5 hours 49 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">
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        Please try again in a few minutes.
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In the hours before

Local storm report, Mar 21, 5:44 PM PDT, 3 hours 53 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.
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Special weather statement, Mar 21, 5:44 PM PDT, 3 hours 53 minutes before

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  <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, Mar 21, 6:29 PM PDT, 3 hours 8 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>
  <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 21, 6:41 PM PDT, 2 hours 56 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 21, 7:42 PM PDT, 1 hour 55 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 Sacramento, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 21, 5:44 PM PDT	Special Weather Statement	STO	Yuba	46 min
Mar 21, 6:31 PM PDT	Tornado Warning	STO	Yuba	29 min
Mar 21, 9:44 PM PDT	Special Weather Statement	STO	Shasta	46 min
Mar 22, 7:28 AM PDT	Special Weather Statement	STO	Placer	62 min
Mar 22, 8:02 AM PDT	Areal Flood Advisory	STO	Amador, El Dorado, Nevada, Placer, Sacramento, San Joaquin	3 hr
Mar 22, 8:47 AM PDT	Flash Flood Watch	STO		14 hr
Mar 22, 10:18 AM PDT	Areal Flood Advisory	STO	Amador, Calaveras, El Dorado, Sacramento, San Joaquin	3 hr
Mar 22, 10:59 AM PDT	Areal Flood Advisory	STO	Stanislaus, Tuolumne	3 hr
Mar 22, 11:15 AM PDT	Areal Flood Advisory	STO	Amador, Butte, Calaveras, El Dorado, Nevada, Placer and 5 more	6 hr
Mar 22, 1:13 PM PDT	Special Weather Statement	STO	San Joaquin	32 min
Mar 22, 2:05 PM PDT	Special Weather Statement	STO	Amador	25 min
Mar 22, 2:22 PM PDT	Special Weather Statement	STO	Amador, Calaveras, El Dorado	38 min
Mar 22, 2:24 PM PDT	Flash Flood Warning	STO	Tuolumne	24 hr
Mar 22, 2:55 PM PDT	Special Weather Statement	STO	Calaveras	35 min
Mar 22, 3:47 PM PDT	Special Weather Statement	STO	Nevada	43 min
Mar 22, 4:59 PM PDT	Areal Flood Warning	STO	Tuolumne	6 hr

Nearby

River Flood Warnings in California, 2018 Every river flood warning in 2018

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.