Alert archive / North Carolina / Flash Flood Warnings in 2023

Flash Flood Warning 68, NWS Wakefield, VA

August 31, 2023Chowan County, Perquimans County, North Carolina

NWS Wakefield, VA issued this flash flood warning at Aug 31, 2023, 5:43 AM EDT for Chowan County, Perquimans 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 31, 2023, 5:43 AM EDT (09:43 UTC)
Expired: Aug 31, 2023, 11:30 AM EDT
In force: 6 hr
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Flood severity: None

Counties Chowan County, NC, Perquimans County, NC

The radar

The Norfolk radar (KAKQ), 103 km from the middle of the area, began a volume at 09:45 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

Newport, NC (KMHX), launched 00:00Z, 9.7 hours before the alert went out and 156 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: 459 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 642 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 Wakefield, VA wrote its last area forecast discussion before this flash flood warning went out at Aug 31, 4:18 AM EDT, 1 hour 25 minutes earlier.

Area forecast discussion, Aug 31, 4:18 AM EDT, 1 hour 25 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 30, 10:55 PM EDT, 6 hours 48 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 Wakefield, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 30, 9:43 PM EDT	Coastal Flood Warning	AKQ	Gloucester, James City, Northampton, Surry, York, City of Chesapeake and 5 more	28 hr
Aug 30, 9:43 PM EDT	Coastal Flood Advisory	AKQ	Accomack, Gloucester, James City, Lancaster, Mathews, Middlesex and 9 more	41 hr
Aug 31, 5:54 AM EDT	Coastal Flood Statement	AKQ	Accomack, Gloucester, James City, Lancaster, Mathews, Middlesex and 11 more	62 hr
Aug 31, 6:39 AM EDT	Flash Flood Warning	AKQ	Currituck	6 hr

Nearby

Flash Flood Warnings in North Carolina, 2023 Every 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.