Alert archive / North Carolina / Flash Flood Warnings in 2023
Flash Flood Warning 44, NWS Raleigh, NC
NWS Raleigh, NC issued this flash flood warning at Sep 9, 2023, 1:27 PM EDT for Wake County, North Carolina. It was in force for 4 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
- Sep 9, 2023, 1:27 PM EDT (17:27 UTC)
- Expired
- Sep 9, 2023, 5:10 PM EDT
- In force
- 4 hr
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Wake County, NC
The radar
The Raleigh/Durham radar (KRAX), 20 km from the middle of the area, began a volume at 17:28 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
Roanoke, VA (KRNK), launched 12:00Z, 5.5 hours before the alert went out and 174 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
- 800 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 764 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
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 Raleigh, NC wrote its last area forecast discussion before this flash flood warning went out at Sep 9, 12:45 PM EDT, 42 minutes earlier.
Area forecast discussion, Sep 9, 12:45 PM EDT, 42 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, Sep 9, 5:17 AM EDT, 8 hours 10 minutes before
Hazardous Weather Outlook National Weather Service Raleigh NC 517 AM EDT Sat Sep 9 2023 NCZ007>011-023>028-040>043-075>078-085-086-088-089-101000- Person-Granville-Vance-Warren-Halifax-Alamance-Orange-Durham- Franklin-Nash-Edgecombe-Chatham-Wake-Johnston-Wilson-Moore-Lee- Harnett-Wayne-Scotland-Hoke-Cumberland-Sampson- 517 AM EDT Sat Sep 9 2023 This Hazardous Weather Outlook is for central North Carolina. .DAY ONE...Today and tonight. A few strong to severe thunderstorms are possible today, with a primary threat of damaging wind gusts. The greatest severe weather threat will be between 1 pm and 11 pm. .DAYS TWO THROUGH SEVEN...Sunday through Friday. There is a low probability for widespread hazardous weather. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and evening. NCZ021-022-038-039-073-074-083-084-101000- Forsyth-Guilford-Davidson-Randolph-Stanly-Montgomery-Anson-Richmond- 517 AM EDT Sat Sep 9 2023 This Hazardous Weather Outlook is for central North Carolina. .DAY ONE...Today and tonight. A few strong to severe thunderstorms are possible today, with a primary threat of damaging wind gusts. The greatest severe weather threat will be between 1 pm and 11 pm. In addition, some storms may produce very heavy downpours capable of producing street flooding. .DAYS TWO THROUGH SEVEN...Sunday through Friday. There is a low probability for widespread hazardous weather. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and evening.
In the hours before
Special weather statement, Sep 9, 11:59 AM EDT, 1 hour 28 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, Sep 9, 12:11 PM EDT, 1 hour 16 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>Special weather statement, Sep 9, 12:13 PM EDT, 1 hour 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>Special weather statement, Sep 9, 12:17 PM EDT, 1 hour 10 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, Sep 9, 12:22 PM EDT, 1 hour 5 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, Sep 9, 12:46 PM EDT, 41 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 Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 7:45 AM EDT | Special Weather Statement | RAH | Richmond, Scotland | 60 min |
| Sep 9, 8:18 AM EDT | Special Weather Statement | RAH | Wake | 57 min |
| Sep 9, 9:08 AM EDT | Special Weather Statement | RAH | Montgomery, Moore | 52 min |
| Sep 9, 9:12 AM EDT | Special Weather Statement | RAH | Durham, Franklin | 63 min |
| Sep 9, 9:22 AM EDT | Areal Flood Advisory | RAH | Durham, Wake | 3 hr |
| Sep 9, 10:01 AM EDT | Flash Flood Warning | RAH | Wake | 2 hr |
| Sep 9, 10:25 AM EDT | Special Weather Statement | RAH | Chatham, Durham, Orange | 65 min |
| Sep 9, 10:28 AM EDT | Special Weather Statement | RAH | Guilford, Randolph | 62 min |
| Sep 9, 11:18 AM EDT | Special Weather Statement | RAH | Forsyth | 27 min |
| Sep 9, 11:28 AM EDT | Severe Thunderstorm Warning | RAH | Forsyth, Guilford | 32 min |
| Sep 9, 11:59 AM EDT | Special Weather Statement | RAH | Harnett, Lee | 61 min |
| Sep 9, 12:13 PM EDT | Special Weather Statement | RAH | Franklin, Halifax, Warren | 62 min |
| Sep 9, 12:17 PM EDT | Special Weather Statement | RAH | Cabarrus | 28 min |
| Sep 9, 12:30 PM EDT | Severe Thunderstorm Warning | RAH | Chatham, Harnett, Lee, Wake | 33 min |
| Sep 9, 2:02 PM EDT | Special Weather Statement | RAH | Halifax | 28 min |
| Sep 9, 2:19 PM EDT | Severe Thunderstorm Warning | RAH | Edgecombe, Halifax | 41 min |
| Sep 9, 3:12 PM EDT | Special Weather Statement | RAH | Edgecombe | 63 min |
| Sep 9, 4:10 PM EDT | Special Weather Statement | RAH | Sampson | 50 min |
| Sep 9, 5:35 PM EDT | Special Weather Statement | RAH | Cumberland, Harnett, Hoke | 55 min |
| Sep 9, 5:55 PM EDT | Areal Flood Advisory | RAH | Wayne | 64 min |
| Sep 9, 6:36 PM EDT | Special Weather Statement | RAH | Moore | 54 min |
| Sep 9, 6:40 PM EDT | Areal Flood Advisory | RAH | Hoke, Moore, Richmond, Scotland | 3 hr |
| Sep 9, 6:43 PM EDT | Severe Thunderstorm Warning | RAH | Montgomery, Moore, Richmond, Scotland | 47 min |
| Sep 9, 7:17 PM EDT | Areal Flood Advisory | RAH | Hoke, Richmond, Scotland | 2 hr |
| Sep 9, 7:43 PM EDT | Special Weather Statement | RAH | Richmond, Scotland | 62 min |
Nearby
Flash Flood Warnings in North Carolina, 2023Every flash flood warning in 2023
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.