Alert archive / South Carolina / Areal Flood Warnings in 2016

Areal Flood Warning 3, NWS Columbia, SC

October 8, 201614 counties in South Carolina

NWS Columbia, SC issued this areal flood warning at Oct 8, 2016, 8:10 AM EDT for 14 counties in South Carolina. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 8, 2016, 8:10 AM EDT (12:10 UTC)
Expired: Oct 8, 2016, 11:15 AM EDT
In force: 3 hr
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Flood severity: None

Counties Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Chesterfield County, SC, Edgefield County, SC, Fairfield County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Lexington County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 17 km from the middle of the area, began a volume at 12:10 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 12:00Z, 0.2 hours before the alert went out and 143 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: 7 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 659 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: -71 m²/s²
0-3 km storm-relative helicity: -75 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 warning 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 warning went out at Oct 7, 7:47 PM EDT, 12 hours 23 minutes earlier.

Area forecast discussion, Oct 7, 7:47 PM EDT, 12 hours 23 minutes before

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Hazardous weather outlook, Oct 7, 12:23 PM EDT, 19 hours 47 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
Oct 8, 12:27 AM EDT	Areal Flood Advisory	CAE	Bamberg, Barnwell, Calhoun, Clarendon, Orangeburg, Sumter	6 hr
Oct 8, 2:56 AM EDT	Flash Flood Warning	CAE	Bamberg, Calhoun, Clarendon, Orangeburg, Richland, Sumter	6 hr
Oct 8, 3:09 AM EDT	Areal Flood Advisory	CAE	Aiken, Calhoun, Edgefield, Kershaw, Lee, Lexington and 3 more	4 hr
Oct 8, 6:08 AM EDT	River Flood Warning	CAE	Orangeburg	5 days
Oct 8, 8:19 AM EDT	Flash Flood Warning	CAE	Bamberg, Calhoun, Clarendon, Lee, Orangeburg, Richland and 1 more	6 hr
Oct 8, 11:11 AM EDT	Areal Flood Warning	CAE	Calhoun, Chesterfield, Fairfield, Kershaw, Lancaster, Lee and 2 more	2 hr
Oct 8, 4:53 PM EDT	River Flood Warning	CAE	Chesterfield, Marlboro	3 days

Nearby

Areal Flood Warnings in South Carolina, 2016 Every areal flood warning in 2016

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.