Alert archive / South Carolina / River Flood Advisories in 2020

River Flood Advisory 23, NWS Columbia, SC

May 21, 2020Lexington County, Richland County, South Carolina

NWS Columbia, SC issued this river flood advisory at May 21, 2020, 11:48 AM EDT for Lexington County, Richland County, South Carolina. It took effect at May 22, 2020, 11:49 AM EDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: May 21, 2020, 11:48 AM EDT (15:48 UTC)
In effect from: May 22, 2020, 11:49 AM EDT
Expired: May 22, 2020, 9:00 PM EDT
In force: 9 hr
Issued by: NWS Columbia, SC
Area: Storm-based polygon

Counties Lexington County, SC, Richland County, SC

The radar

The Columbia radar (KCAE), 3 km from the middle of the area, began a volume at 15:50 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 Congaree River at Columbia (COLS1). The gauge peaked at 19.96 ft at May 23, 2020, 6:00 AM EDT.

Action stage: 10 ft
Minor stage: 19 ft
Moderate stage: 24 ft
Major stage: 30 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 02169500, 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 advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Columbia, SC wrote its last area forecast discussion before this river flood advisory went out at May 21, 10:03 AM EDT, 1 hour 45 minutes earlier.

Area forecast discussion, May 21, 10:03 AM EDT, 1 hour 45 minutes before

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Hazardous weather outlook, May 21, 8:03 AM EDT, 3 hours 45 minutes before

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<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.
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The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 21, 4:38 AM EDT	Areal Flood Advisory	CAE	Chesterfield	3 hr
May 21, 12:55 PM EDT	Special Weather Statement	CAE	Chesterfield, Clarendon, Lee	65 min
May 21, 1:11 PM EDT	Areal Flood Advisory	CAE	Chesterfield	2 hr
May 21, 3:32 PM EDT	Areal Flood Advisory	CAE	Chesterfield, Lancaster	118 min

Nearby

River Flood Advisories in South Carolina, 2020 Every river flood advisory in 2020

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.