Alert archive / North Carolina / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 258, NWS Greenville-Spartanburg, SC

September 10, 20154 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Sep 10, 2015, 5:38 PM EDT for 4 counties in North Carolina. It was in force for 52 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: Sep 10, 2015, 5:38 PM EDT (21:38 UTC)
Expired: Sep 10, 2015, 6:30 PM EDT
In force: 52 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Cabarrus County, NC, Iredell County, NC, Mecklenburg County, NC, Rowan County, NC

The radar

The Greer radar (KGSP), 156 km from the middle of the area, began a volume at 21:38 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, 9.6 hours before the alert went out and 95 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: 261 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 684 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 42 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Sep 10, 4:52 PM EDT, 46 minutes earlier.

Area forecast discussion, Sep 10, 4:52 PM EDT, 46 minutes before

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Hazardous weather outlook, Sep 10, 4:55 AM EDT, 12 hours 43 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
455 AM EDT THU SEP 10 2015

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-110900-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER-
IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA-
ROWAN-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-
HENDERSON-CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION-
CALDWELL MOUNTAINS-GREATER CALDWELL-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-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK-
ANDERSON-ABBEVILLE-LAURENS-CHESTER-GREENWOOD-
455 AM EDT THU SEP 10 2015

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

.DAY ONE...TODAY AND TONIGHT.

SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS THE AREA AGAIN TODAY
AND CONTINUE INTO THE EVENING. AREAS OF HEAVY RAINFALL ARE
POSSIBLE...ALONG WITH CLOUD TO GROUND LIGHTNING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

..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.
..TUESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..WEDNESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

In the hours before

Special weather statement, Sep 10, 4:17 PM EDT, 1 hour 21 minutes before

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Special weather statement, Sep 10, 4:19 PM EDT, 1 hour 19 minutes before

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Local storm report, Sep 10, 4:48 PM EDT, 50 minutes before

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Special weather statement, Sep 10, 5:09 PM EDT, 29 minutes before

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Local storm report, Sep 10, 5:26 PM EDT, 12 minutes before

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Local storm report, Sep 10, 5:38 PM EDT, 0 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
Sep 10, 1:44 PM EDT	Special Weather Statement	GSP	Davie	31 min
Sep 10, 3:21 PM EDT	Special Weather Statement	GSP	Rutherford	24 min
Sep 10, 3:28 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland, McDowell, Rutherford	47 min
Sep 10, 4:00 PM EDT	Special Weather Statement	GSP	Catawba	30 min
Sep 10, 4:19 PM EDT	Special Weather Statement	GSP	Davie	26 min
Sep 10, 4:49 PM EDT	Severe Thunderstorm Warning	GSP	Gaston, Lincoln	41 min
Sep 10, 5:09 PM EDT	Special Weather Statement	GSP	Cleveland, Rutherford	36 min
Sep 10, 5:28 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Gaston, Lincoln, Mecklenburg	47 min
Sep 10, 6:06 PM EDT	Areal Flood Advisory	GSP	Rutherford	3 hr
Sep 10, 6:17 PM EDT	Special Weather Statement	GSP	Mecklenburg	28 min
Sep 10, 6:19 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus	13 min
Sep 10, 6:22 PM EDT	Special Weather Statement	GSP	Gaston	38 min
Sep 10, 6:47 PM EDT	Special Weather Statement	GSP	Mecklenburg	28 min
Sep 10, 6:49 PM EDT	Special Weather Statement	GSP	Rutherford	26 min
Sep 10, 6:56 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Mecklenburg, Union	49 min
Sep 10, 3:36 PM EDT	Special Weather Statement	GSP	Abbeville	24 min
Sep 10, 4:17 PM EDT	Special Weather Statement	GSP	Chester	13 min
Sep 10, 7:07 PM EDT	Special Weather Statement	GSP	York	38 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.