Alert archive / Nevada / River Flood Warnings in 2023

River Flood Warning 7, NWS Reno, NV

May 20, 2023Douglas County, Nevada; Alpine County, California

NWS Reno, NV issued this river flood warning at May 20, 2023, 9:04 AM PDT for Douglas County, Nevada; Alpine County, California. It took effect at May 21, 2023, 3:00 AM PDT. It was in force for 29 hr.

The area

The counties it named.

The facts

Issued: May 20, 2023, 9:04 AM PDT (16:04 UTC)
In effect from: May 21, 2023, 3:00 AM PDT
Expired: May 22, 2023, 7:36 AM PDT
In force: 29 hr
Issued by: NWS Reno, NV
Area: Storm-based polygon
Flood severity: Minor

Counties Alpine County, CA, Douglas County, NV

The radar

The Reno radar (KRGX), 113 km from the middle of the area, began a volume at 16:05 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 East Fork Carson River near Gardnerville (GRDN2). The gauge peaked at 14.04 ft at May 23, 2023, 2:00 AM PDT.

Action stage: 13 ft
Minor stage: 14 ft
Moderate stage: 15.5 ft
Major stage: 16.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 10309000, 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 Reno, NV wrote its last area forecast discussion before this river flood warning went out at May 20, 2:57 AM PDT, 6 hours 7 minutes earlier.

Area forecast discussion, May 20, 2:57 AM PDT, 6 hours 7 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

Special weather statement, May 20, 3:39 AM PDT, 5 hours 25 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>

Special weather statement, May 20, 4:15 AM PDT, 4 hours 49 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 Reno, NV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 20, 3:03 PM PDT	Flash Flood Warning	REV	Douglas	57 min
May 20, 3:27 PM PDT	Special Weather Statement	REV	Storey	18 min
May 20, 3:46 PM PDT	Special Weather Statement	REV	Storey	14 min
May 20, 2:22 PM PDT	Flash Flood Warning	REV	Alpine	69 min
May 20, 3:47 PM PDT	Special Weather Statement	REV	Plumas	28 min

Nearby

River Flood Warnings in Nevada, 2023 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.