Alert archive / South Carolina / River Flood Warnings in 2020

River Flood Warning 63, NWS Wilmington, NC

September 18, 2020Horry County, South Carolina

NWS Wilmington, NC issued this river flood warning at Sep 18, 2020, 11:39 AM EDT for Horry County, South Carolina. It took effect at Sep 18, 2020, 2:00 PM EDT. It was in force for 4 days.

The area

The counties it named.

The facts

Issued: Sep 18, 2020, 11:39 AM EDT (15:39 UTC)
In effect from: Sep 18, 2020, 2:00 PM EDT
Expired: Sep 22, 2020, 8:59 PM EDT
In force: 4 days
Issued by: NWS Wilmington, NC
Area: Storm-based polygon
Flood severity: Minor

County Horry County, SC

The radar

The Wilmington radar (KLTX), 51 km from the middle of the area, began a volume at 15:41 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 Waccamaw River near Conway (CNWS1). The gauge peaked at 11.25 ft at Sep 19, 2020, 5:00 PM EDT.

Action stage: 10 ft
Minor stage: 11 ft
Moderate stage: 12 ft
Major stage: 14 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 02110704, 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 Wilmington, NC wrote its last area forecast discussion before this river flood warning went out at Sep 18, 10:32 AM EDT, 1 hour 7 minutes earlier.

Area forecast discussion, Sep 18, 10:32 AM EDT, 1 hour 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>

Hazardous weather outlook, Sep 18, 3:38 AM EDT, 8 hours 1 minute 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 Wilmington, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 17, 8:52 PM EDT	Special Weather Statement	ILM	Brunswick, New Hanover	38 min
Sep 17, 9:04 PM EDT	Areal Flood Advisory	ILM	Brunswick, New Hanover	116 min
Sep 17, 9:27 PM EDT	Special Marine Warning	ILM		48 min
Sep 17, 9:39 PM EDT	Areal Flood Advisory	ILM	Brunswick, Columbus	111 min
Sep 18, 10:20 AM EDT	Small Craft Advisory	ILM		41 hr
Sep 18, 11:38 AM EDT	River Flood Warning	ILM	Florence, Marion	4 hr

Nearby

River Flood Warnings in South Carolina, 2020 Every river flood warning 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.