Alert archive / North Carolina / Special Weather Statements in 2023

Special Weather Statement, NWS Blacksburg, VA

June 20, 2023Surry County, Yadkin County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Jun 20, 2023, 1:13 AM EDT for Surry County, Yadkin County, North Carolina. It was in force for 47 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: Jun 20, 2023, 1:13 AM EDT (05:13 UTC)
Expired: Jun 20, 2023, 2:00 AM EDT
In force: 47 min
Issued by: NWS Blacksburg, VA
Hail: 0.00 in
Wind: 30

Counties Surry County, NC, Yadkin County, NC

The radar

The Roanoke radar (KFCX), 93 km from the middle of the area, began a volume at 05:12 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, 5.2 hours before the alert went out and 70 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: 115 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 581 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 87 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 Blacksburg, VA wrote its last area forecast discussion before this special weather statement went out at Jun 19, 9:44 PM EDT, 3 hours 29 minutes earlier.

Area forecast discussion, Jun 19, 9:44 PM EDT, 3 hours 29 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, Jun 19, 2:45 PM EDT, 10 hours 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>

In the hours before

Special weather statement, Jun 20, 12:36 AM EDT, 37 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
1236 AM EDT Tue Jun 20 2023

NCZ019-200530-
Wilkes NC-
1236 AM EDT Tue Jun 20 2023

...Thunderstorms with very heavy rainfall located across Caldwell
and Alexander counties will spread north into Wilkes County through
130 AM EDT...

At 1233 AM EDT, Doppler radar was tracking an area of thunderstorms
with very heavy rainfall extending along a line from near Hudson to
near Lookout Shoals Lake. Movement was north at 55 mph.

HAZARD...Very heavy rainfall. Occasional cloud-to-ground lightning.

SOURCE...Radar indicated.

IMPACT...Minor flooding of low-lying and poor drainage areas.
         Reduced visibility and poor driving conditions.

Locations impacted include...
North Wilkesboro...
Wilkesboro...
Ronda...
Boomer...
Wilbar...
Mc Grady...
and Windy Gap.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3604 8138 3604 8140 3605 8139 3607 8141
      3608 8145 3628 8139 3629 8137 3637 8136
      3632 8088 3606 8097 3603 8107 3604 8114
      3603 8117 3604 8120 3603 8127 3600 8132
TIME...MOT...LOC 0433Z 188DEG 48KT 3589 8146 3582 8109

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...<30 MPH

RAB

Special weather statement, Jun 20, 1:13 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
113 AM EDT Tue Jun 20 2023

NCZ003-020-200600-
Yadkin NC-Surry NC-
113 AM EDT Tue Jun 20 2023

...A strong thunderstorm will impact portions of southern Surry and
central Yadkin Counties through 200 AM EDT...

At 112 AM EDT, Doppler radar was tracking a strong thunderstorm over
Yadkinville, moving north at 15 mph.

HAZARD...Winds in excess of 30 mph.  Very heavy rainfall.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Very heavy rainfall could result in
         flooding of low-lying and poor drainage areas. Ponding of
         water on roadways is likely in areas of heavy rainfall.

Locations impacted include...
Fairview...
Yadkinville...
Dobson...
Boonville...
Nebo...
Level Cross...
and Rockford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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.

&&

LAT...LON 3612 8057 3612 8072 3644 8083 3645 8058
TIME...MOT...LOC 0512Z 175DEG 11KT 3616 8064

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

RAB

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 20, 2:40 AM EDT	Areal Flood Advisory	RNK	Floyd, Franklin	3 hr
Jun 20, 3:38 AM EDT	Areal Flood Advisory	RNK	Franklin, Roanoke, City of Roanoke, City of Salem	2 hr
Jun 20, 5:38 AM EDT	Flash Flood Warning	RNK	Floyd, Franklin, Roanoke, City of Roanoke, City of Salem	6 hr
Jun 20, 5:44 AM EDT	Areal Flood Advisory	RNK	Pittsylvania, City of Danville	5 hr
Jun 20, 6:13 AM EDT	Areal Flood Advisory	RNK	Patrick	103 min
Jun 20, 7:41 AM EDT	Areal Flood Advisory	RNK	Carroll, Grayson, City of Galax	3 hr
Jun 20, 7:56 AM EDT	Flash Flood Warning	RNK	Patrick	5 hr
Jun 20, 8:26 AM EDT	Areal Flood Advisory	RNK	Henry, City of Martinsville	2 hr
Jun 20, 8:27 AM EDT	Areal Flood Advisory	RNK	Grayson	3 hr
Jun 20, 8:47 AM EDT	Areal Flood Advisory	RNK	Franklin	2 hr
Jun 20, 5:14 PM EDT	Areal Flood Advisory	RNK	Floyd, Franklin, Patrick	4 hr
Jun 20, 6:24 PM EDT	Areal Flood Advisory	RNK	Franklin	3 hr
Jun 19, 11:42 PM EDT	Areal Flood Advisory	RNK	Surry	5 hr
Jun 20, 12:36 AM EDT	Special Weather Statement	RNK	Wilkes	54 min
Jun 20, 1:21 AM EDT	Special Weather Statement	RNK	Wilkes	54 min
Jun 20, 1:29 AM EDT	Areal Flood Advisory	RNK	Wilkes	7 hr
Jun 20, 4:08 AM EDT	Areal Flood Advisory	RNK	Watauga, Wilkes	5 hr

Nearby

Special Weather Statements in North Carolina, 2023 Every special weather statement 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.