Alert archive / North Carolina / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 135, NWS Greenville-Spartanburg, SC

June 23, 20185 counties in North Carolina; 5 counties in South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 23, 2018, 5:03 PM EDT for 5 counties in North Carolina; 5 counties in South 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 counties it named.

The facts

Issued: Jun 23, 2018, 5:03 PM EDT (21:03 UTC)
Expired: Jun 23, 2018, 6:00 PM EDT
In force: 57 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Buncombe County, NC, Haywood County, NC, Henderson County, NC, Polk County, NC, Transylvania County, NC, Anderson County, SC, Greenville County, SC, Laurens County, SC, Pickens County, SC, Spartanburg County, SC

The radar

The Greer radar (KGSP), 31 km from the middle of the area, began a volume at 21:03 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.1 hours before the alert went out and 266 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: 670 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 634 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jun 23, 5:02 PM EDT, 1 minute earlier.

Area forecast discussion, Jun 23, 5:02 PM EDT, 1 minute 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 23, 5:19 AM EDT, 11 hours 44 minutes before

Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
519 AM EDT Sat Jun 23 2018

GAZ010-017-018-026-028-029-NCZ048>053-058-059-062>065-071-072-082-
SCZ001>014-019-240930-
Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Madison-Yancey-
Mitchell-Swain-Haywood-Buncombe-Graham-Northern Jackson-Macon-
Southern Jackson-Transylvania-Henderson-Mecklenburg-Cabarrus-Union-
Oconee Mountains-Pickens Mountains-Greenville Mountains-
Greater Oconee-Greater Pickens-Greater Greenville-Spartanburg-
Cherokee-York-Anderson-Abbeville-Laurens-Chester-Greenwood-
519 AM EDT Sat Jun 23 2018

This Hazardous Weather Outlook is for northeast Georgia, upstate
South Carolina, the mountains of western North Carolina, and a
portion of the Charlotte metro area.

.DAY ONE...Today and Tonight.

Scattered thunderstorms are expected across the area this afternoon.
Cloud-to-ground lightning and torrential rainfall are possible with
any of the storms. However, a few of them may produce severe
weather, primarily in the form of damaging winds.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

..Sunday...No hazardous weather is expected at this time.
..Monday...No hazardous weather is expected at this time.
..Tuesday...No hazardous weather is expected at this time.
..Wednesday...No hazardous weather is expected at this time.
..Thursday...No hazardous weather is expected at this time.
..Friday...No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Skywarn spotters are requested to forward any reports of damaging
winds, large hail, or flash flooding to our office.

NCZ033-035>037-056-057-068>070-501>510-240930-
Avery-Alexander-Iredell-Davie-Catawba-Rowan-Cleveland-Lincoln-Gaston-
Caldwell Mountains-Greater Caldwell-Burke Mountains-Greater Burke-
McDowell Mountains-Eastern McDowell-Rutherford Mountains-
Greater Rutherford-Polk Mountains-Eastern Polk-
519 AM EDT Sat Jun 23 2018

This Hazardous Weather Outlook is for a portion of the the foothills
and Piedmont of North Carolina.

.DAY ONE...Today and Tonight.

Scattered thunderstorms are expected across the area this afternoon.
Cloud-to-ground lightning, torrential rainfall, and gusty winds are
possible with any of the storms.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

..Sunday...No hazardous weather is expected at this time.
..Monday...No hazardous weather is expected at this time.
..Tuesday...No hazardous weather is expected at this time.
..Wednesday...No hazardous weather is expected at this time.
..Thursday...No hazardous weather is expected at this time.
..Friday...No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

None.

Wimberley

In the hours before

Local storm report, Jun 23, 4:08 PM EDT, 55 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, Jun 23, 4:27 PM EDT, 36 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, Jun 23, 4:29 PM EDT, 34 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, Jun 23, 4:31 PM EDT, 32 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, Jun 23, 4:50 PM EDT, 13 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, Jun 23, 4:58 PM EDT, 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>

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 22, 9:15 PM EDT	Special Weather Statement	GSP	Cleveland, Gaston	45 min
Jun 22, 10:24 PM EDT	Special Weather Statement	GSP	Union	66 min
Jun 23, 3:04 PM EDT	Special Weather Statement	GSP	Graham	56 min
Jun 23, 3:14 PM EDT	Severe Thunderstorm Warning	GSP	Graham, Macon, Swain	61 min
Jun 23, 3:26 PM EDT	Special Weather Statement	GSP	Macon	64 min
Jun 23, 3:43 PM EDT	Severe Thunderstorm Warning	GSP	Macon	62 min
Jun 23, 4:06 PM EDT	Special Weather Statement	GSP	Haywood, Jackson, Swain	54 min
Jun 23, 4:22 PM EDT	Severe Thunderstorm Warning	GSP	Haywood, Jackson, Macon, Transylvania	53 min
Jun 23, 5:08 PM EDT	Special Weather Statement	GSP	Buncombe, Haywood, Madison	37 min
Jun 23, 5:55 PM EDT	Special Weather Statement	GSP	Polk, Rutherford	65 min
Jun 22, 8:02 PM EDT	Special Weather Statement	GSP	Spartanburg	58 min
Jun 22, 8:21 PM EDT	Special Weather Statement	GSP	Greenwood, Laurens	54 min
Jun 22, 8:29 PM EDT	Special Weather Statement	GSP	Greenwood	31 min
Jun 22, 8:35 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee, Spartanburg	40 min
Jun 22, 8:43 PM EDT	Special Weather Statement	GSP	Union	32 min
Jun 22, 8:53 PM EDT	Severe Thunderstorm Warning	GSP	Greenwood	37 min
Jun 22, 9:02 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee, Chester, Union, York	43 min
Jun 22, 9:29 PM EDT	Special Weather Statement	GSP	Chester, York	46 min
Jun 22, 9:57 PM EDT	Special Weather Statement	GSP	Chester	48 min
Jun 23, 4:29 PM EDT	Special Weather Statement	GSP	Greenwood	31 min
Jun 23, 4:31 PM EDT	Special Weather Statement	GSP	Abbeville	29 min
Jun 23, 6:14 PM EDT	Special Weather Statement	GSP	Union	46 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2018 Severe Thunderstorm Warnings in South Carolina, 2018 Every severe thunderstorm warning in 2018

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.