Alert archive / South Carolina / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 40, NWS Greenville-Spartanburg, SC

May 11, 2015Greenville County, Laurens County, Spartanburg County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 11, 2015, 11:48 PM EDT for Greenville County, Laurens County, Spartanburg County, South Carolina. It was in force for 42 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: May 11, 2015, 11:48 PM EDT (03:48 UTC)
Expired: May 12, 2015, 12:30 AM EDT
In force: 42 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Greenville County, SC, Laurens County, SC, Spartanburg County, SC

The radar

The Greer radar (KGSP), 15 km from the middle of the area, began a volume at 03:48 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, 3.8 hours before the alert went out and 249 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: 1160 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1621 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 124 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 May 11, 7:49 PM EDT, 3 hours 59 minutes earlier.

Area forecast discussion, May 11, 7:49 PM EDT, 3 hours 59 minutes before

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Hazardous weather outlook, May 11, 5:14 AM EDT, 18 hours 34 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
514 AM EDT MON MAY 11 2015

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-121000-
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-
514 AM EDT MON MAY 11 2015

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

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORMS ARE IN THE FORECAST TODAY AND TONIGHT. SOME OF
THESE THUNDERSTORMS COULD BE SEVERE...PRODUCING LARGE HAIL OR
DAMAGING WINDS. HEAVY RAINFALL COULD OCCUR WITH SOME OF THE
THUNDERSTORMS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

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

07

In the hours before

Local storm report, May 11, 6:47 PM EDT, 5 hours 1 minute before

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Special weather statement, May 11, 6:51 PM EDT, 4 hours 57 minutes before

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Local storm report, May 11, 7:02 PM EDT, 4 hours 46 minutes before

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Local storm report, May 11, 7:04 PM EDT, 4 hours 44 minutes before

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Special weather statement, May 11, 7:39 PM EDT, 4 hours 9 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
May 11, 9:04 PM EDT	Special Weather Statement	GSP	Jackson	26 min
May 11, 10:33 PM EDT	Special Weather Statement	GSP	Greenville	27 min
May 11, 11:10 PM EDT	Special Weather Statement	GSP	Greenville	35 min
May 11, 11:33 PM EDT	Special Weather Statement	GSP	Spartanburg	27 min
May 12, 12:12 AM EDT	Special Weather Statement	GSP	Spartanburg	33 min
May 12, 12:28 AM EDT	Special Weather Statement	GSP	Spartanburg	32 min

Nearby

Severe Thunderstorm Warnings in South 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.