Alert archive / South Carolina / Flash Flood Warnings in 2024

Flash Flood Warning 18, NWS Columbia, SC

August 3, 2024Richland County, South Carolina

NWS Columbia, SC issued this flash flood warning at Aug 3, 2024, 4:23 PM EDT for Richland County, 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: Aug 3, 2024, 4:23 PM EDT (20:23 UTC)
Expired: Aug 3, 2024, 7:15 PM EDT
In force: 3 hr
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Richland County, SC

The radar

The Columbia radar (KCAE), 21 km from the middle of the area, began a volume at 20:26 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.4 hours before the alert went out and 246 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: 775 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 586 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash 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 flash flood warning went out at Aug 3, 2:34 PM EDT, 1 hour 49 minutes earlier.

Area forecast discussion, Aug 3, 2:34 PM EDT, 1 hour 49 minutes before

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In the hours before

Local storm report, Aug 3, 3:26 PM EDT, 57 minutes before

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Special weather statement, Aug 3, 3:33 PM EDT, 50 minutes before

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Local storm report, Aug 3, 3:34 PM EDT, 49 minutes before

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Local storm report, Aug 3, 4:00 PM EDT, 23 minutes before

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      <p id="message2">
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Local storm report, Aug 3, 4:07 PM EDT, 16 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Aug 3, 4:21 PM EDT, 2 minutes before

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<body>
  <main class="wrap">
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      <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.
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      <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
Aug 3, 1:36 PM EDT	Special Weather Statement	CAE	Edgefield, Saluda	39 min
Aug 3, 1:38 PM EDT	Special Weather Statement	CAE	Fairfield	37 min
Aug 3, 2:01 PM EDT	Special Weather Statement	CAE	Newberry	29 min
Aug 3, 2:12 PM EDT	Special Weather Statement	CAE	Kershaw	48 min
Aug 3, 2:23 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Edgefield, McCormick	37 min
Aug 3, 2:37 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield, Kershaw, Lancaster, Richland	38 min
Aug 3, 3:06 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield, Kershaw, Lancaster	39 min
Aug 3, 3:11 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield, Saluda	49 min
Aug 3, 3:12 PM EDT	Flash Flood Warning	CAE	Fairfield, Kershaw, Lexington, Richland	4 hr
Aug 3, 3:33 PM EDT	Special Weather Statement	CAE	McCormick	27 min
Aug 3, 3:45 PM EDT	Severe Thunderstorm Warning	CAE	Aiken	45 min
Aug 3, 4:07 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Lexington	38 min
Aug 3, 4:15 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lee, Richland, Sumter	45 min
Aug 3, 4:29 PM EDT	Special Weather Statement	CAE	Chesterfield	46 min
Aug 3, 4:34 PM EDT	Special Weather Statement	CAE	Kershaw	41 min
Aug 3, 4:38 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield, Kershaw, Richland	52 min
Aug 3, 4:43 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Calhoun, Lexington	47 min
Aug 3, 5:27 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CAE	Kershaw, Richland	48 min
Aug 3, 5:40 PM EDT	Severe Thunderstorm Warning	CAE	Lee, Richland, Sumter	50 min
Aug 3, 6:38 PM EDT	Areal Flood Advisory	CAE	Lee	2 hr
Aug 3, 6:50 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Orangeburg, Sumter	40 min
Aug 3, 7:10 PM EDT	Areal Flood Advisory	CAE	Calhoun, Orangeburg	110 min
Aug 3, 2:10 PM EDT	Special Weather Statement	CAE	Columbia, McDuffie	50 min
Aug 3, 3:01 PM EDT	Special Weather Statement	CAE	Richmond	44 min
Aug 3, 4:44 PM EDT	Areal Flood Advisory	CAE	Burke, Columbia, McDuffie, Richmond	2 hr
Aug 3, 5:51 PM EDT	Areal Flood Advisory	CAE	Burke	114 min
Aug 3, 6:46 PM EDT	Severe Thunderstorm Warning	CAE	Burke	29 min

Nearby

Flash Flood Warnings in South Carolina, 2024 Every flash flood warning in 2024

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.