Alert archive / Georgia / Areal Flood Advisories in 2021

Areal Flood Advisory 44, NWS Columbia, SC

July 26, 2021Columbia County, Richmond County, Georgia

NWS Columbia, SC issued this areal flood advisory at Jul 26, 2021, 10:00 PM EDT for Columbia County, Richmond County, Georgia. It was in force for 60 min.

The area

The counties it named.

The facts

Issued: Jul 26, 2021, 10:00 PM EDT (02:00 UTC)
Expired: Jul 26, 2021, 11:00 PM EDT
In force: 60 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

Counties Columbia County, GA, Richmond County, GA

The radar

The Columbia radar (KCAE), 112 km from the middle of the area, began a volume at 02:04 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 nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 2.0 hours before the alert went out and 211 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1621 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 892 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal 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 areal flood advisory went out at Jul 26, 9:31 PM EDT, 29 minutes earlier.

Area forecast discussion, Jul 26, 9:31 PM EDT, 29 minutes before

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Hazardous weather outlook, Jul 26, 4:47 AM EDT, 17 hours 13 minutes before

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In the hours before

Special weather statement, Jul 26, 5:49 PM EDT, 4 hours 11 minutes before

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  <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
Jul 27, 3:26 PM EDT	Areal Flood Advisory	CAE	Lexington, Richland	64 min
Jul 27, 4:25 PM EDT	Special Weather Statement	CAE	Fairfield	50 min
Jul 27, 4:34 PM EDT	Special Weather Statement	CAE	Lexington	41 min
Jul 27, 5:03 PM EDT	Special Weather Statement	CAE	Sumter	27 min
Jul 27, 5:28 PM EDT	Special Weather Statement	CAE	Richland	32 min
Jul 27, 6:41 PM EDT	Special Weather Statement	CAE	Newberry	49 min
Jul 27, 3:18 PM EDT	Special Weather Statement	CAE	Columbia, McDuffie, Richmond	57 min

Nearby

Areal Flood Advisories in Georgia, 2021 Every areal flood advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.