Alert archive / North Carolina / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 170, NWS Greenville-Spartanburg, SC

July 14, 20154 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 14, 2015, 10:34 AM EDT for 4 counties in North Carolina. It was in force for 56 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
Jul 14, 2015, 10:34 AM EDT (14:34 UTC)
Expired
Jul 14, 2015, 11:30 AM EDT
In force
56 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

Counties Graham County, NC, Jackson County, NC, Macon County, NC, Swain County, NC

The radar

The Knoxville radar (KMRX), 95 km from the middle of the area, began a volume at 14:35 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, 2.6 hours before the alert went out and 236 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2015-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1704 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2015-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1704 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
988 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
-39 m²/s²
Significant tornado parameter
0.0
Supercell composite
-1.1

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 Jul 14, 3:34 AM EDT, 7 hours earlier.

Area forecast discussion, Jul 14, 3:34 AM EDT, 7 hours 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, Jul 14, 5:02 AM EDT, 5 hours 32 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
502 AM EDT TUE JUL 14 2015

NCZ033-048>053-058-059-062>065-501-503-505-150915-
AVERY-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-GRAHAM-
NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-
CALDWELL MOUNTAINS-BURKE MOUNTAINS-MCDOWELL MOUNTAINS-
502 AM EDT TUE JUL 14 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MOUNTAINS OF NORTH
CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

A LINE OF THUNDERSTORMS WILL REACH THE NORTH CAROLINA MOUNTAINS
AROUND DAYBREAK AND WILL PUSH SOUTHEAST ACROSS THE MOUNTAINS THROUGH
MID MORNING. FREQUENT CLOUD-TO-GROUND LIGHTNING...TORRENTIAL
DOWNPOURS...AND GUSTY WINDS WILL BE THE MAIN THREATS. SOME FLOODING
OF POOR DRAINAGE AREAS WILL BE POSSIBLE. AFTER THE FIRST WAVE OF
STORMS MOVES THROUGH...THE ATMOSPHERE IS EXPECTED TO DESTABILIZE
AGAIN IN THE AFTERNOON. ANOTHER ROUND OF STRONG TO SEVERE
THUNDERSTORMS IS POSSIBLE LATER IN THE AFTERNOON AND INTO THE
EVENING. SOME OF THE STORMS MAY CONTAIN DAMAGING WIND GUSTS AND
LARGE HAIL. A THIRD ROUND OF THUNDERSTORMS IS ALSO POSSIBLE LATE
TONIGHT AND EARLY WEDNESDAY MORNING AS A COLD FRONT MOVES ACROSS THE
REGION.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

..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.
..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..SUNDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..MONDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE
HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE.

NCZ035>037-056-057-068>072-082-502-504-506>510-SCZ008-009-014-150915-
ALEXANDER-IREDELL-DAVIE-CATAWBA-ROWAN-CLEVELAND-LINCOLN-GASTON-
MECKLENBURG-CABARRUS-UNION-GREATER CALDWELL-GREATER BURKE-
EASTERN MCDOWELL-RUTHERFORD MOUNTAINS-GREATER RUTHERFORD-
POLK MOUNTAINS-EASTERN POLK-CHEROKEE-YORK-CHESTER-
502 AM EDT TUE JUL 14 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE FOOTHILLS AND WESTERN PIEDMONT
NORTH CAROLINA...INCLUDING THE CHARLOTTE METRO AREA.

.DAY ONE...TODAY AND TONIGHT.

A BROKEN BAND OF THUNDERSTORMS WILL MOVE ACROSS THE MOUNTAINS OF
NORTH CAROLINA EARLY THIS MORNING AND MAY MOVE OUT ACROSS THE
FOOTHILLS AND WESTERN PIEDMONT OF NORTH CAROLINA DURING THE MIDDLE
PART OF THE MORNING. THE TIMING OF THIS BAND OF STORMS DOES NOT
FAVOR MUCH IN THE WAY OF STRENGTHENING EAST OF THE BLUE RIDGE...AS
THE ATMOSPHERE WILL NOT BE ABLE TO WARM UP AND DESTABILIZE BEFORE
IT MOVES THROUGH. AT THIS POINT...THE MAIN THREATS APPEAR TO BE
CLOUD-TO-GROUND LIGHTNING AND HEAVY RAIN. AFTER THE MORNING
ACTIVITY MOVES OFF TO THE EAST...IT MAY TAKE SEVERAL HOURS FOR THE
ATMOSPHERE TO DESTABILIZE AGAIN OWING TO LINGERING CLOUD COVER. IF
THE CLOUDS THIN EARLY ENOUGH IN THE DAY...BY MID AFTERNOON...WE
MAY DESTABILIZE ENOUGH TO SUPPORT REDEVELOPMENT OF STRONG TO
SEVERE THUNDERSTORMS OVER THE AREA EAST OF THE MOUNTAINS THROUGH
THE LATE AFTERNOON AND EVENING HOURS. DAMAGING WIND GUSTS AND
LARGE HAIL WOULD BE THE MAIN THREATS. A THIRD ROUND OF STORMS WILL
BE POSSIBLE LATE TONIGHT AND EARLY WEDNESDAY AS A COLD FRONT
PUSHES ACROSS THE REGION.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

..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.
..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..SUNDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..MONDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE
HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE.

GAZ010-017-018-026-028-029-SCZ001>007-010>013-019-150915-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE-
GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-ANDERSON-ABBEVILLE-
LAURENS-UNION-GREENWOOD-
502 AM EDT TUE JUL 14 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA AND UPSTATE
SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

A FEW THUNDERSTORMS MAY DEVELOP AND MOVE ACROSS NORTHEAST GEORGIA
AND THE UPSTATE OF SOUTH CAROLINA THIS MORNING...WITH GUSTY
WINDS...BRIEF HEAVY DOWNPOURS...AND FREQUENT LIGHTNING. THE
ATMOSPHERE IS EXPECTED TO BECOME MODERATELY UNSTABLE BY THIS
AFTERNOON ACROSS THE AREA ALONG AND WEST OF INTERSTATE 26...WHICH
WILL SUPPORT THE DEVELOPMENT OF STRONG TO SEVERE THUNDERSTORMS
THROUGH THE AFTERNOON AND INTO THE EVENING. DAMAGING WIND GUSTS
AND LARGE HAIL WILL BE POSSIBLE. IN ADDITION...THERE WILL BE
ENOUGH WIND SHEAR IN THE LOWER PART OF THE ATMOSPHERE SUCH THAT A
BRIEF TORNADO CANNOT BE RULED OUT. ANOTHER ROUND OF THUNDERSTORMS
WILL BE POSSIBLE LATE TONIGHT AND EARLY WEDNESDAY MORNING AS A
COLD FRONT PUSHES ACROSS THE REGION.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

..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.
..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..SUNDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..MONDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE
HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE.

In the hours before

Special weather statement, Jul 14, 7:52 AM EDT, 2 hours 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>
Special weather statement, Jul 14, 8:30 AM EDT, 2 hours 4 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, Jul 14, 8:33 AM EDT, 2 hours 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>
Special weather statement, Jul 14, 9:30 AM EDT, 1 hour 4 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, Jul 14, 10:00 AM 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, Jul 14, 10:11 AM EDT, 23 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.

IssuedProductOfficeCountiesLasted
Jul 13, 8:06 PM EDTSevere Thunderstorm WarningGSPAlexander, Burke, Caldwell, Catawba, Iredell, McDowell and 1 more39 min
Jul 13, 8:16 PM EDTSevere Thunderstorm WarningGSPBuncombe, Henderson, McDowell, Polk, Rutherford, Transylvania21 min
Jul 13, 8:19 PM EDTSpecial Weather StatementGSPCabarrus26 min
Jul 13, 8:27 PM EDTSevere Thunderstorm WarningGSPCabarrus, Iredell, Mecklenburg, Rowan48 min
Jul 13, 8:32 PM EDTSpecial Weather StatementGSPCatawba, Cleveland, Davie, Iredell, Lincoln28 min
Jul 13, 8:55 PM EDTSpecial Weather StatementGSPRowan65 min
Jul 13, 8:58 PM EDTSevere Thunderstorm WarningGSPCabarrus, Rowan47 min
Jul 13, 9:03 PM EDTAreal Flood AdvisoryGSPCabarrus, Mecklenburg117 min
Jul 13, 9:24 PM EDTSevere Thunderstorm WarningGSPUnion61 min
Jul 13, 9:50 PM EDTAreal Flood AdvisoryGSPUnion3 hr
Jul 14, 6:36 AM EDTSpecial Weather StatementGSPAvery, Madison, Mitchell, Yancey54 min
Jul 14, 7:27 AM EDTSpecial Weather StatementGSPBuncombe, Haywood, Henderson, McDowell, Polk, Rutherford63 min
Jul 14, 7:47 AM EDTSevere Thunderstorm WarningGSPBuncombe, Haywood, Henderson, McDowell, Polk, Rutherford and 1 more58 min
Jul 14, 7:52 AM EDTSpecial Weather StatementGSPAlexander, Burke, Catawba, Cleveland, Iredell, Lincoln68 min
Jul 14, 8:22 AM EDTAreal Flood AdvisoryGSPAvery, Buncombe, Haywood, Madison, Mitchell, Yancey3 hr
Jul 14, 8:33 AM EDTSpecial Weather StatementGSPAvery, Buncombe, Haywood, Madison, Mitchell, Yancey42 min
Jul 14, 9:30 AM EDTSpecial Weather StatementGSPSwain30 min
Jul 14, 10:00 AM EDTSpecial Weather StatementGSPJackson30 min
Jul 14, 10:11 AM EDTSpecial Weather StatementGSPGraham34 min
Jul 14, 11:11 AM EDTAreal Flood AdvisoryGSPMadison2 hr
Jul 14, 11:30 AM EDTSpecial Weather StatementGSPGraham15 min
Jul 14, 11:46 AM EDTSpecial Weather StatementGSPMacon29 min
Jul 14, 4:20 PM EDTSpecial Weather StatementGSPGraham, Haywood, Swain55 min
Jul 14, 4:45 PM EDTSevere Thunderstorm WarningGSPGraham, Haywood, Jackson, Macon, Swain75 min
Jul 14, 5:58 PM EDTSevere Thunderstorm WarningGSPJackson, Macon77 min
Jul 13, 8:08 PM EDTSevere Thunderstorm WarningGSPChester, York52 min
Jul 13, 8:44 PM EDTSevere Thunderstorm WarningGSPCherokee, Spartanburg, Union, York46 min
Jul 13, 9:11 PM EDTSpecial Weather StatementGSPYork34 min
Jul 14, 8:30 AM EDTSpecial Weather StatementGSPCherokee, Greenville, Spartanburg, Union, York60 min
Jul 14, 12:52 PM EDTSpecial Weather StatementGSPOconee38 min
Jul 14, 1:28 PM EDTSpecial Weather StatementGSPAbbeville32 min
Jul 14, 6:48 PM EDTSevere Thunderstorm WarningGSPAnderson, Oconee, Pickens72 min
Jul 14, 7:47 PM EDTSevere Thunderstorm WarningGSPAbbeville, Anderson43 min
Jul 14, 1:36 PM EDTSevere Thunderstorm WarningGSPElbert, Franklin, Hart39 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2015Every severe thunderstorm warning in 2015

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.