Alert archive / South Carolina / Areal Flood Warnings in 2021

Areal Flood Warning 17, NWS Greenville-Spartanburg, SC

October 7, 2021Abbeville County, South Carolina

NWS Greenville-Spartanburg, SC issued this areal flood warning at Oct 7, 2021, 12:03 PM EDT for Abbeville County, South Carolina. It was in force for 6 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 7, 2021, 12:03 PM EDT (16:03 UTC)
Expired: Oct 7, 2021, 6:00 PM EDT
In force: 6 hr
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Flood severity: None

County Abbeville County, SC

The radar

The Greer radar (KGSP), 77 km from the middle of the area, began a volume at 16:05 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 4.1 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: 134 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 660 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 Greenville-Spartanburg, SC wrote its last area forecast discussion before this areal flood warning went out at Oct 7, 11:27 AM EDT, 36 minutes earlier.

Area forecast discussion, Oct 7, 11:27 AM EDT, 36 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, Oct 7, 5:14 AM EDT, 6 hours 49 minutes before

Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
514 AM EDT Thu Oct 7 2021

GAZ018-026-028-029-NCZ033-048>051-058-068-501>504-506-508-510-
SCZ004>008-010>013-019-080915-
Stephens-Franklin-Hart-Elbert-Avery-Madison-Yancey-Mitchell-Swain-
Graham-Cleveland-Caldwell Mountains-Greater Caldwell-Burke Mountains-
Greater Burke-Eastern McDowell-Greater Rutherford-Eastern Polk-
Greater Oconee-Greater Pickens-Greater Greenville-Spartanburg-
Cherokee-Anderson-Abbeville-Laurens-Union SC-Greenwood-
514 AM EDT Thu Oct 7 2021

This Hazardous Weather Outlook is for northeast Georgia, piedmont
North Carolina, western North Carolina and upstate South Carolina.

.DAY ONE...Today and tonight.

Numerous to widespread showers along with isolated thunderstorms
are expected off and on through tonight. The main threat will be
from locally heavy rainfall. Isolated flash flooding could develop in
areas that see multiple rounds of heavy rainfall. Locations that have
received heavy rainfall in previous days will be most susceptible to
developing flash flooding. Occasional cloud to ground lightning will
also be possible with any thunderstorms.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

None.

GAZ010-017-NCZ052-053-059-062>065-505-507-509-SCZ001>003-080915-
Rabun-Habersham-Haywood-Buncombe-Northern Jackson-Macon-
Southern Jackson-Transylvania-Henderson-McDowell Mountains-
Rutherford Mountains-Polk Mountains-Oconee Mountains-
Pickens Mountains-Greenville Mountains-
514 AM EDT Thu Oct 7 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...

This Hazardous Weather Outlook is for northeast Georgia, western
North Carolina and upstate South Carolina.

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

None.

NCZ035>037-056-057-069>072-082-SCZ009-014-080915-
Alexander-Iredell-Davie-Catawba-Rowan-Lincoln-Gaston-Mecklenburg-
Cabarrus-Union NC-York-Chester-
514 AM EDT Thu Oct 7 2021

This Hazardous Weather Outlook is for piedmont North Carolina and
upstate South Carolina.

.DAY ONE...Today and tonight.

Isolated to widely scattered thunderstorms are expected across the
Piedmont today, mainly this afternoon and evening. The primary
threats from any storms will be from cloud to ground lightning and
locally heavy rainfall.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

None.

Lane

In the hours before

Local storm report, Oct 7, 11:39 AM EDT, 24 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>

Local storm report, Oct 7, 11:44 AM EDT, 19 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>

Local storm report, Oct 7, 11:48 AM EDT, 15 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>

Local storm report, Oct 7, 11:51 AM EDT, 12 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>

Local storm report, Oct 7, 11:52 AM EDT, 11 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>

Local storm report, Oct 7, 11:55 AM EDT, 8 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>

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 7, 12:20 AM EDT	Areal Flood Advisory	GSP	Avery, Caldwell	2 hr
Oct 7, 6:40 AM EDT	Areal Flood Advisory	GSP	Buncombe, Haywood, Henderson, Transylvania	3 hr
Oct 7, 6:59 AM EDT	Areal Flood Advisory	GSP	Transylvania	5 hr
Oct 7, 7:08 AM EDT	Areal Flood Advisory	GSP	Jackson, Macon, Transylvania	3 hr
Oct 7, 7:34 AM EDT	Flash Flood Warning	GSP	Buncombe, McDowell, Rutherford	7 hr
Oct 7, 8:10 AM EDT	Flash Flood Warning	GSP	Henderson, Rutherford	3 hr
Oct 7, 9:05 AM EDT	Special Weather Statement	GSP	Burke	55 min
Oct 7, 9:25 AM EDT	Flash Flood Warning Considerable damage threat	GSP	Burke, McDowell	5 hr
Oct 7, 9:41 AM EDT	River Flood Advisory	GSP	Buncombe, Henderson	3 days
Oct 7, 9:41 AM EDT	River Flood Advisory	GSP	Buncombe	17 hr
Oct 7, 9:46 AM EDT	River Flood Warning	GSP	Henderson, Transylvania	68 hr
Oct 7, 10:53 AM EDT	Areal Flood Advisory	GSP	Transylvania	6 hr
Oct 7, 11:03 AM EDT	Flash Flood Warning	GSP	Burke	6 hr
Oct 7, 11:19 AM EDT	Areal Flood Warning	GSP	Henderson, Rutherford	6 hr
Oct 7, 11:49 AM EDT	Areal Flood Advisory	GSP	Henderson, Polk	8 hr
Oct 7, 1:02 PM EDT	Areal Flood Advisory	GSP	Macon, Swain	8 hr
Oct 7, 2:01 PM EDT	Areal Flood Warning	GSP	Burke, McDowell	4 hr
Oct 7, 5:47 AM EDT	Special Weather Statement	GSP	Greenville	43 min
Oct 7, 6:16 AM EDT	Flash Flood Warning	GSP	Anderson	3 hr
Oct 7, 7:45 AM EDT	Areal Flood Advisory	GSP	Abbeville	3 hr
Oct 7, 8:59 AM EDT	Flash Flood Warning	GSP	Abbeville	3 hr
Oct 7, 9:16 AM EDT	Areal Flood Warning	GSP	Anderson	7 hr
Oct 7, 9:42 AM EDT	Special Weather Statement	GSP	Greenwood	63 min
Oct 7, 10:21 AM EDT	Flash Flood Warning	GSP	Greenwood	4 hr
Oct 7, 3:38 AM EDT	Special Weather Statement	GSP	Habersham, Rabun	37 min
Oct 7, 4:21 AM EDT	Areal Flood Advisory	GSP	Habersham, Rabun	2 hr
Oct 7, 4:45 AM EDT	Areal Flood Advisory	GSP	Elbert, Hart	3 hr
Oct 7, 6:12 AM EDT	Flash Flood Warning	GSP	Elbert, Hart	3 hr
Oct 7, 6:26 AM EDT	Areal Flood Advisory	GSP	Habersham, Rabun	4 hr
Oct 7, 8:26 AM EDT	Areal Flood Warning	GSP	Rabun	6 hr
Oct 7, 9:11 AM EDT	Areal Flood Warning	GSP	Elbert, Hart	35 hr
Oct 7, 10:39 AM EDT	Areal Flood Warning	GSP	Habersham	7 hr
Oct 7, 4:30 PM EDT	Areal Flood Advisory	GSP	Hart	3 hr

Nearby

Areal Flood Warnings in South Carolina, 2021 Every areal flood warning 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.