Alert archive / North Carolina / Special Weather Statements in 2020

Special Weather Statement, NWS Raleigh, NC

August 3, 20206 counties in North Carolina

NWS Raleigh, NC issued this special weather statement at Aug 3, 2020, 10:48 AM EDT for 6 counties in North Carolina. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 3, 2020, 10:48 AM EDT (14:48 UTC)
Expired: Aug 3, 2020, 11:45 AM EDT
In force: 57 min
Issued by: NWS Raleigh, NC

Counties Anson County, NC, Chatham County, NC, Davidson County, NC, Montgomery County, NC, Randolph County, NC, Stanly County, NC

The radar

The Raleigh/Durham radar (KRAX), 120 km from the middle of the area, began a volume at 14:49 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, 2.8 hours before the alert went out and 60 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: 478 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 948 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

<!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>

What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 3, 7:42 AM EDT, 3 hours 6 minutes earlier.

Area forecast discussion, Aug 3, 7:42 AM EDT, 3 hours 6 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 3, 8:00 AM EDT, 2 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>

In the hours before

Special weather statement, Aug 3, 10:48 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service Raleigh NC
1048 AM EDT Mon Aug 3 2020

NCZ023-038>040-073>075-083-084-031545-
Stanly NC-Anson NC-Richmond NC-Chatham NC-Alamance NC-Randolph NC-
Davidson NC-Moore NC-Montgomery NC-
1048 AM EDT Mon Aug 3 2020

...AN AREA OF SHOWERS AND STRONG THUNDERSTORMS WILL AFFECT SOUTHERN
ALAMANCE...NORTHWESTERN MOORE...SOUTHEASTERN DAVIDSON...ANSON...
MONTGOMERY...NORTHWESTERN RICHMOND...RANDOLPH...STANLY AND CHATHAM
COUNTIES UNTIL 1145 AM EDT...

At 1044 AM EDT, Doppler radar was tracking an area of showers and
strong thunderstorms along a line extending from near Pittsboro to
near Seagrove to near Wadesboro. Movement was northwest at 20 mph.

Radar estimated rainfall is near one inch per hour with the storms.
Heavy rain and minor flooding will be possible with these storms.

Locations impacted include...
Asheboro, Lexington, Albemarle, Wadesboro, Randleman, Pittsboro,
Troy, Siler City, Badin Lake and North Carolina Zoo.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning, especially in urban areas where prolonged heavy rain
can quickly lead to flooding.

&&

LAT...LON 3550 8030 3551 8018 3567 8031 3580 8027
      3591 7974 3590 7954 3595 7954 3600 7928
      3588 7926 3587 7921 3569 7910 3553 7928
      3556 7929 3554 7932 3547 7936 3481 8011
      3482 8032 3519 8028 3518 8048 3519 8048
TIME...MOT...LOC 1444Z 132DEG 16KT 3578 7922 3547 7983 3488 8026

22

The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 3, 12:09 AM EDT	Special Weather Statement	RAH	Forsyth	66 min
Aug 3, 1:13 AM EDT	Areal Flood Advisory	RAH	Forsyth	3 hr
Aug 3, 1:22 AM EDT	Special Weather Statement	RAH	Forsyth	53 min
Aug 3, 3:04 AM EDT	Special Weather Statement	RAH	Forsyth	56 min
Aug 3, 10:50 AM EDT	River Flood Warning	RAH	Johnston	4 days
Aug 3, 10:50 AM EDT	River Flood Warning	RAH	Johnston	60 hr
Aug 3, 2:08 PM EDT	Special Weather Statement	RAH	Harnett	67 min
Aug 3, 2:58 PM EDT	Special Weather Statement	RAH	Johnston	62 min
Aug 3, 4:07 PM EDT	Special Weather Statement	RAH	Johnston, Wayne	53 min
Aug 3, 4:18 PM EDT	Special Weather Statement	RAH	Alamance, Durham, Orange, Person	57 min
Aug 3, 5:00 PM EDT	Special Weather Statement	RAH	Wake	60 min
Aug 3, 5:56 PM EDT	Special Weather Statement	RAH	Anson	64 min
Aug 3, 6:10 PM EDT	Special Weather Statement	RAH	Granville, Vance	65 min
Aug 3, 6:14 PM EDT	Special Weather Statement	RAH	Durham, Orange, Person	61 min

Nearby

Special Weather Statements in North Carolina, 2020 Every special weather statement in 2020

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.