Alert archive / North Carolina / Areal Flood Warnings in 2021
Areal Flood Warning 6, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this areal flood warning at Aug 17, 2021, 8:55 PM EDT for Mitchell County, Yancey County, North 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
- Aug 17, 2021, 8:55 PM EDT (00:55 UTC)
- Expired
- Aug 18, 2021, 2:45 AM EDT
- In force
- 6 hr
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Mitchell County, NC, Yancey County, NC
The radar
The Knoxville radar (KMRX), 107 km from the middle of the area, began a volume at 00:56 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 00:00Z, 0.9 hours before the alert went out and 210 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.
- Mixed-layer CAPE
- 349 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 641 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 225 m²/s²
- 0-3 km storm-relative helicity
- 278 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.5
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 Aug 17, 8:06 PM EDT, 49 minutes earlier.
Area forecast discussion, Aug 17, 8:06 PM EDT, 49 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, Aug 17, 10:55 AM EDT, 10 hours before
Hazardous Weather Outlook National Weather Service Greenville-Spartanburg SC 1055 AM EDT Tue Aug 17 2021 GAZ010-NCZ048>050-052-053-059-062>065-503>510-SCZ001>007-010>012-019- 181500- Rabun-Madison-Yancey-Mitchell-Haywood-Buncombe-Northern Jackson- Macon-Southern Jackson-Transylvania-Henderson-Burke Mountains- Greater Burke-McDowell Mountains-Eastern McDowell- Rutherford Mountains-Greater Rutherford-Polk Mountains-Eastern Polk- Oconee Mountains-Pickens Mountains-Greenville Mountains- Greater Oconee-Greater Pickens-Greater Greenville-Spartanburg- Anderson-Abbeville-Laurens-Greenwood- 1055 AM EDT Tue Aug 17 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH WEDNESDAY MORNING... ...TORNADO WATCH 444 IN EFFECT UNTIL 7 PM EDT 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. Tornado Watch. Flash Flood Watch. Widespread showers with embedded thunderstorms are likely today into tonight as the remnants of Fred track across the southern Appalachians. Cloud-to-ground lightning strikes, heavy rainfall, and isolated tornadoes are the main impacts. Heavy rainfall will likely lead to flash flooding, especially along the Blue Ridge Escarpment and areas that receive multiple rounds of heavy rainfall. Isolated tornadoes are possible this afternoon and evening across the North Carolina Piedmont, South Carolina Upstate, and Northeast Georgia. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. Flash Flood Watch through early Wednesday morning. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. Please relay any information about observed severe weather to the NWS while following all local, state, and CDC guidelines. NCZ068-SCZ008-013-181500- Cleveland-Cherokee-Union SC- 1055 AM EDT Tue Aug 17 2021 ...TORNADO WATCH 444 IN EFFECT UNTIL 7 PM EDT THIS EVENING... This Hazardous Weather Outlook is for piedmont 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. Tornado Watch. Deep tropical moisture from the remnants of Tropical Depression Fred will produce periodic heavy rainfall with embedded thunderstorms today into tonight. The main impacts are cloud-to-ground lightning, isolated tornadoes, and heavy rainfall leading to the potential for isolated flash flooding. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. Please relay any information about observed severe weather to the NWS while following all local, state, and CDC guidelines. NCZ035>037-056-057-069>072-082-SCZ009-014-181500- Alexander-Iredell-Davie-Catawba-Rowan-Lincoln-Gaston-Mecklenburg- Cabarrus-Union NC-York-Chester- 1055 AM EDT Tue Aug 17 2021 This Hazardous Weather Outlook is for piedmont North Carolina and upstate South Carolina. .DAY ONE...Today and tonight. Deep tropical moisture from the remnants of Tropical Depression Fred will produce periodic heavy rainfall with embedded thunderstorms today into tonight. The main impacts are cloud-to-ground lightning, isolated tornadoes, and heavy rainfall leading to the potential for isolated flash flooding. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. Please relay any information about observed severe weather to the NWS while following all local, state, and CDC guidelines. NCZ033-051-058-501-502-181500- Avery-Swain-Graham-Caldwell Mountains-Greater Caldwell- 1055 AM EDT Tue Aug 17 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH WEDNESDAY MORNING... This Hazardous Weather Outlook is for western North 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. Widespread showers with embedded thunderstorms are likely today into tonight as the remnants of Fred track across the southern Appalachians. Cloud-to-ground lightning strikes, heavy rainfall, and isolated tornadoes are the main impacts. Heavy rainfall will likely lead to flash flooding, especially along the Blue Ridge Escarpment and areas that receive multiple rounds of heavy rainfall. Isolated tornadoes are possible this afternoon and evening across the North Carolina Piedmont, South Carolina Upstate, and Northeast Georgia. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. Flash Flood Watch through early Wednesday morning. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. Please relay any information about observed severe weather to the NWS while following all local, state, and CDC guidelines. GAZ017-018-026-028-029-181500- Habersham-Stephens-Franklin-Hart-Elbert- 1055 AM EDT Tue Aug 17 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH WEDNESDAY MORNING... ...TORNADO WATCH 443 IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... This Hazardous Weather Outlook is for northeast Georgia. .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. Tornado Watch. Flash Flood Watch. Isolated tornadoes are possible this afternoon into this evening. Excessive rainfall from Fred's remnants could lead to flash flooding today into tonight. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. Flash Flood Watch in effect until early Wednesday morning. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. Please relay any information about observed severe weather to the NWS while following all local, state, and CDC guidelines.
In the hours before
Local storm report, Aug 17, 8:17 PM EDT, 38 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, Aug 17, 8:34 PM EDT, 21 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, Aug 17, 8:35 PM EDT, 20 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, Aug 17, 8:41 PM EDT, 14 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, Aug 17, 8:43 PM 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, Aug 17, 8:49 PM EDT, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
849 PM EDT TUE AUG 17 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0704 PM DEBRIS FLOW 1 N COVE CREEK 35.62N 83.01W
08/17/2021 HAYWOOD NC PUBLIC
ROCKSLIDE NEAR I-40 MILE MARKER 19
&&
MPRThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 8:30 PM EDT | Flash Flood Warning | GSP | Haywood | 6 hr |
| Aug 17, 9:01 PM EDT | Areal Flood Advisory | GSP | Burke, Cleveland, Rutherford | 5 hr |
| Aug 17, 9:40 PM EDT | Areal Flood Advisory | GSP | Alexander, Caldwell, Catawba, Gaston, Lincoln | 6 hr |
| Aug 17, 9:52 PM EDT | Areal Flood Warning | GSP | Henderson, Transylvania | 14 hr |
| Aug 17, 10:03 PM EDT | Areal Flood Advisory | GSP | Macon, Swain | 11 hr |
| Aug 17, 10:21 PM EDT | Flash Flood Warning | GSP | Catawba | 3 hr |
| Aug 17, 10:33 PM EDT | Areal Flood Warning | GSP | Buncombe | 7 hr |
| Aug 17, 10:44 PM EDT | Tornado Warning | GSP | Alexander, Iredell | 31 min |
| Aug 17, 10:53 PM EDT | Areal Flood Advisory | GSP | Iredell, Mecklenburg | 4 hr |
| Aug 17, 11:16 PM EDT | River Flood Warning | GSP | Madison | 20 hr |
| Aug 18, 12:00 AM EDT | River Flood Advisory | GSP | Swain | 10 hr |
| Aug 18, 12:44 AM EDT | Areal Flood Warning | GSP | Rutherford | 5 hr |
| Aug 18, 1:18 AM EDT | Areal Flood Advisory | GSP | McDowell | 4 hr |
| Aug 18, 1:59 AM EDT | Areal Flood Advisory | GSP | Avery | 3 hr |
| Aug 18, 2:21 AM EDT | Areal Flood Warning | GSP | Burke, Caldwell | 6 hr |
| Aug 18, 3:15 AM EDT | River Flood Warning | GSP | Buncombe, Henderson | 44 hr |
| Aug 18, 1:28 PM EDT | River Flood Warning | GSP | Henderson, Transylvania | 69 hr |
| Aug 17, 8:00 PM EDT | Tornado Warning | GSP | Cherokee, Spartanburg, Union, York | 45 min |
| Aug 17, 10:11 PM EDT | Areal Flood Advisory | GSP | Habersham | 5 hr |
| Aug 18, 3:52 PM EDT | Areal Flood Advisory | GSP | Rabun | 4 hr |
Nearby
Areal Flood Warnings in North Carolina, 2021Every 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.