Alert archive / North Carolina / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 108, NWS Greenville-Spartanburg, SC

June 20, 2015Cabarrus County, Rowan County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 20, 2015, 5:17 PM EDT for Cabarrus County, Rowan County, North Carolina. It was in force for 32 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 20, 2015, 5:17 PM EDT (21:17 UTC)
Expired: Jun 20, 2015, 5:49 PM EDT
In force: 32 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Cabarrus County, NC, Rowan County, NC

The radar

The Greer radar (KGSP), 168 km from the middle of the area, began a volume at 21:19 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, 9.3 hours before the alert went out and 85 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: 465 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 962 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 88 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 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 20, 5:00 PM EDT, 17 minutes earlier.

Area forecast discussion, Jun 20, 5:00 PM EDT, 17 minutes before

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Hazardous weather outlook, Jun 20, 3:52 PM EDT, 1 hour 25 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
352 PM EDT SAT JUN 20 2015

NCZ033-035>037-057-501-502-212000-
AVERY-ALEXANDER-IREDELL-DAVIE-ROWAN-CALDWELL MOUNTAINS-
GREATER CALDWELL-
352 PM EDT SAT JUN 20 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NORTHERN NORTH CAROLINA
PIEDMONT AND MOUNTAINS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

AS THE REMNANTS OF TROPICAL SYSTEM BILL CROSS THE SOUTHERN
APPALACHIANS THIS AFTERNOON AND EVENING...INCREASING SHEAR AND
INSTABILITY WILL BE SUPPORTIVE OF STRONG TO SEVERE CONVECTION.
SCATTERED TO NUMEROUS THUNDERSTORMS ARE POSSIBLE OVER THE
NORTHERN MOUNTAINS AND ALSO THE FOOTHILLS AND PIEDMONT REGIONS
NORTH OF INTERSTATE 40. ANY OF THESE THUNDERSTORMS WILL PRODUCE
DANGEROUS CLOUD TO GROUND LIGHTNING AND LOCALLY HEAVY RAINFALL.
SOME MAY PRODUCE DAMAGING WIND GUSTS AND HAIL AS LARGE AS
QUARTERS. AN ISOLATED TORNADO CANNOT BE RULED OUT.

.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 SEVERE
WEATHER TO THE NATIONAL WEATHER SERVICE.

GAZ010-017-018-NCZ048>053-056-058-059-062>065-068>070-503>510-
SCZ001>005-212000-
RABUN-HABERSHAM-STEPHENS-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-
BUNCOMBE-CATAWBA-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-
TRANSYLVANIA-HENDERSON-CLEVELAND-LINCOLN-GASTON-BURKE MOUNTAINS-
GREATER BURKE-MCDOWELL MOUNTAINS-EASTERN MCDOWELL-
RUTHERFORD MOUNTAINS-GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-
OCONEE MOUNTAINS-PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-
GREATER OCONEE-GREATER PICKENS-
352 PM EDT SAT JUN 20 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...CENTRAL PIEDMONT
NORTH CAROLINA...WESTERN NORTH CAROLINA AND PORTIONS OF UPSTATE
SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED SHOWERS AND THUNDERSTORMS REMAIN A POSSIBILITY THIS
AFTERNOON AND EVENING AS THE REMNANTS OF TROPICAL SYSTEM BILL
COMBINE WITH A WARM AND UNSTABLE AIRMASS. THE MAIN THREATS WITH
ANY OF THE STRONGEST THUNDERSTORMS ARE DAMAGING WINDS...LARGE
HAIL...HEAVY RAINFALL...AND DANGEROUS CLOUD TO GROUND LIGHTNING.

.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 SEVERE
WEATHER TO THE NATIONAL WEATHER SERVICE.

GAZ026-028-029-NCZ071-072-082-SCZ006>014-019-212000-
FRANKLIN-HART-ELBERT-MECKLENBURG-CABARRUS-UNION-GREATER GREENVILLE-
SPARTANBURG-CHEROKEE-YORK-ANDERSON-ABBEVILLE-LAURENS-CHESTER-
GREENWOOD-
352 PM EDT SAT JUN 20 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
GEORGIA...SOUTHERN PIEDMONT NORTH CAROLINA AND PORTIONS OF UPSTATE
SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED SHOWERS AND THUNDERSTORMS REMAIN A POSSIBILITY THIS
AFTERNOON AND EVENING AS THE REMNANTS OF TROPICAL SYSTEM BILL
COMBINE WITH A WARM AND UNSTABLE AIRMASS. THE MAIN THREATS WITH
ANY OF THE STRONGEST THUNDERSTORMS ARE DAMAGING WINDS...LARGE
HAIL...HEAVY RAINFALL...AND DANGEROUS CLOUD TO GROUND LIGHTNING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

..SUNDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..MONDAY...EXCESSIVE HEAT POSSIBLE. A REGION OF STRONG HIGH
PRESSURE WILL SPREAD OVER THE AREA ON MONDAY LASTING INTO MID
WEEK. MOIST SOUTHERLY FLOW COMBINED WITH NEAR RECORD TEMPERATURES
COULD LEAD TO DANGEROUS HEAT INDICES ACROSS THE REGION.
..TUESDAY...EXCESSIVE HEAT POSSIBLE.
..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 SEVERE
WEATHER TO THE NATIONAL WEATHER SERVICE.

CDG

In the hours before

Special weather statement, Jun 20, 3:30 PM EDT, 1 hour 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
330 PM EDT SAT JUN 20 2015

NCZ068-SCZ007-008-202000-
CLEVELAND NC-SPARTANBURG SC-CHEROKEE SC-
330 PM EDT SAT JUN 20 2015

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF SOUTHEASTERN
CLEVELAND...NORTHEASTERN SPARTANBURG AND CHEROKEE COUNTIES UNTIL 400
PM EDT...

AT 330 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 5
MILES WEST OF GAFFNEY...OR NEAR PRIME OUTLET MALL...MOVING EAST AT 35
MPH.

PEA SIZE HAIL AND WIND GUSTS UP TO 55 MPH WILL BE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
GAFFNEY...COWPENS...BLACKSBURG...MAYO...CHESNEE...GROVER...PATTERSON
SPRINGS...EARL...COWPENS NATIONAL BATTLEFIELD AND PRIME OUTLET MALL.

LAT...LON 3514 8190 3528 8140 3505 8141 3505 8147
      3503 8149 3501 8149 3494 8180
TIME...MOT...LOC 1930Z 250DEG 30KT 3506 8176

07

Special weather statement, Jun 20, 3:48 PM EDT, 1 hour 29 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
348 PM EDT SAT JUN 20 2015

SCZ007-013-202015-
SPARTANBURG SC-UNION SC-
348 PM EDT SAT JUN 20 2015

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF NORTHWESTERN UNION
AND SOUTHEASTERN SPARTANBURG COUNTIES UNTIL 415 PM EDT...

AT 347 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 12
MILES SOUTH OF SPARTANBURG...OR 7 MILES SOUTH OF CROFT STATE PARK...
MOVING NORTHEAST AT 15 MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 55 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
UNION...PACOLET...BUFFALO...JONESVILLE...PACOLET MILLS...CROFT STATE
PARK...PAULINE AND CROSS ANCHOR.

LAT...LON 3465 8186 3480 8198 3497 8177 3493 8175
      3493 8174 3491 8172 3491 8168 3490 8167
      3489 8167 3477 8156
TIME...MOT...LOC 1947Z 235DEG 12KT 3477 8185

07

Special weather statement, Jun 20, 3:59 PM EDT, 1 hour 18 minutes before

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Local storm report, Jun 20, 4:27 PM EDT, 50 minutes before

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Special weather statement, Jun 20, 4:29 PM EDT, 48 minutes before

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Local storm report, Jun 20, 4:41 PM EDT, 36 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 8:02 PM EDT	Special Weather Statement	GSP	Madison	28 min
Jun 19, 9:12 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland	33 min
Jun 19, 9:58 PM EDT	Special Weather Statement	GSP	Mitchell	32 min
Jun 19, 11:03 PM EDT	Special Weather Statement	GSP	Union	27 min
Jun 19, 11:27 PM EDT	Special Weather Statement	GSP	Union	33 min
Jun 19, 11:38 PM EDT	Special Weather Statement	GSP	Alexander	37 min
Jun 20, 12:11 AM EDT	Special Weather Statement	GSP	Gaston	34 min
Jun 20, 3:10 PM EDT	Special Weather Statement	GSP	Cabarrus	35 min
Jun 20, 3:59 PM EDT	Special Weather Statement	GSP	Gaston	31 min
Jun 20, 4:29 PM EDT	Special Weather Statement	GSP	Cabarrus	31 min
Jun 20, 4:43 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Mecklenburg, Rowan	47 min
Jun 20, 4:52 PM EDT	Severe Thunderstorm Warning	GSP	Mecklenburg, Union	38 min
Jun 19, 10:35 PM EDT	Special Weather Statement	GSP	Cherokee	25 min
Jun 19, 11:10 PM EDT	Special Weather Statement	GSP	York	35 min
Jun 19, 11:31 PM EDT	Special Weather Statement	GSP	Cherokee	29 min
Jun 20, 2:38 PM EDT	Special Weather Statement	GSP	Anderson, Greenville, Spartanburg	22 min
Jun 20, 3:04 PM EDT	Special Weather Statement	GSP	Anderson, Cherokee, Laurens, Spartanburg, Union	26 min
Jun 20, 3:30 PM EDT	Special Weather Statement	GSP	Cherokee	30 min
Jun 20, 3:48 PM EDT	Special Weather Statement	GSP	Union	27 min
Jun 20, 4:48 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Anderson, Greenville	42 min
Jun 20, 5:16 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Greenwood, Laurens	44 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2015 Every 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.