Alert archive / South Carolina / Tornado Warnings in 2011

Tornado Warning 14, NWS Greenville-Spartanburg, SC

April 9, 2011York County, South Carolina; Gaston County, North Carolina

NWS Greenville-Spartanburg, SC issued this tornado warning at Apr 9, 2011, 5:24 PM EDT for York County, South Carolina; Gaston County, North Carolina. It was in force for 36 min. 7 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 9, 2011, 5:24 PM EDT (21:24 UTC)
Expired
Apr 9, 2011, 6:00 PM EDT
In force
36 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

Counties Gaston County, NC, York County, SC

The radar

The Greer radar (KGSP), 104 km from the middle of the area, began a volume at 21:24 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.

What was reported inside it

TimeReportWhereRemark
Apr 9, 5:30 PM EDTHAIL 1.25Clover, SC
Apr 9, 5:30 PM EDTHAIL 2Clover, SC
Apr 9, 5:30 PM EDTHAIL 4Clover, SCNUMEROUS HAILSTONES OF THIS SIZE REPORTED
Apr 9, 5:33 PM EDTHAIL 2Clover, SC
Apr 9, 5:47 PM EDTHAIL 25 Wsw Lake Wylie, SCHW-55 AND SOUTH KINGSBURY RD
Apr 9, 5:52 PM EDTHAIL 1.75Tega Cay, SC
Apr 9, 5:58 PM EDTHAIL 2Fort Mill, SC

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 9, 2:44 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.4 hours before the alert went out and 156 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, Greensboro/Hi Pt, NC at 12:00Z on 2011-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2011-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 169 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
704 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
169 m²/s²
0-3 km storm-relative helicity
256 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

036 
WFUS52 KGSP 092124
TORGSP
NCC071-SCC091-092200-
/O.NEW.KGSP.TO.W.0014.110409T2124Z-110409T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
524 PM EDT SAT APR 9 2011

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL GASTON COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  NORTHERN YORK COUNTY IN UPSTATE SOUTH CAROLINA...
  THIS INCLUDES THE CITY OF YORK...

* UNTIL 600 PM EDT

* AT 520 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR CLOVER...OR
  9 MILES NORTH OF YORK...MOVING EAST AT 40 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LAKE
  WYLIE...TEGA CAY AND FORT MILL

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR STURDIER SHELTER.
OTHERWISE...GO TO AN INTERIOR ROOM ON THE LOWEST LEVEL OF YOUR HOME
OR PLACE OF BUSINESS. MAKE SURE THERE ARE AS MANY WALLS AND FLOORS
BETWEEN YOU AND THE OUTSIDE AS POSSIBLE.

TO REPORT TORNADOES...DAMAGING WINDS...LARGE HAIL...OR FLOODING...
THROUGH OUR AUTOMATED REPORTING SYSTEM...CALL OUR TOLL FREE NUMBER...
1 8 7 7...6 3 3...6 7 7 2.

&&

LAT...LON 3499 8135 3519 8130 3516 8101 3515 8105
      3511 8103 3509 8106 3506 8106 3503 8095
      3494 8088
TIME...MOT...LOC 2124Z 292DEG 35KT 3511 8119

$$

NED
2 follow-up statements
111 
WWUS52 KGSP 092150
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
550 PM EDT SAT APR 9 2011

NCC071-SCC091-092200-
/O.CON.KGSP.TO.W.0014.000000T0000Z-110409T2200Z/
GASTON NC-YORK SC-
550 PM EDT SAT APR 9 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM EDT FOR NORTHERN
YORK AND SOUTH CENTRAL GASTON COUNTIES...

AT 547 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR TEGA CAY...OR NEAR
ROCK HILL...MOVING EAST AT 40 MPH. HAIL UP TO THE SIZE OF GOLFBALLS 
IS LIKELY WITH THIS STORM.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FORT
MILL

LAT...LON 3499 8135 3519 8130 3516 8101 3515 8105
      3511 8103 3509 8106 3506 8106 3503 8095
      3494 8088
TIME...MOT...LOC 2150Z 292DEG 35KT 3497 8099

$$

NED
930 
WWUS52 KGSP 092159
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
559 PM EDT SAT APR 9 2011

NCC071-SCC091-092208-
/O.EXP.KGSP.TO.W.0014.000000T0000Z-110409T2200Z/
GASTON NC-YORK SC-
559 PM EDT SAT APR 9 2011

...THE TORNADO WARNING FOR NORTHERN YORK AND SOUTH CENTRAL GASTON
COUNTIES WILL EXPIRE AT 600 PM EDT...

A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR YORK COUNTY 
UNTIL 630 PM.

LAT...LON 3499 8135 3519 8130 3516 8101 3515 8105
      3511 8103 3509 8106 3506 8106 3503 8095
      3494 8088
TIME...MOT...LOC 2158Z 292DEG 35KT 3494 8090

$$

NED

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 3:43 PM EDTSevere Thunderstorm WarningGSPOconee62 min
Apr 9, 4:29 PM EDTSevere Thunderstorm WarningGSPOconee, Pickens46 min
Apr 9, 4:52 PM EDTSevere Thunderstorm WarningGSPAnderson, Greenville, Pickens53 min
Apr 9, 5:26 PM EDTSevere Thunderstorm WarningGSPYork64 min
Apr 9, 5:40 PM EDTSevere Thunderstorm WarningGSPAnderson, Greenville, Laurens48 min
Apr 9, 5:53 PM EDTSevere Thunderstorm WarningGSPYork52 min
Apr 9, 5:56 PM EDTSevere Thunderstorm WarningGSPYork34 min
Apr 9, 6:06 PM EDTTornado WarningGSPYork12 min
Apr 9, 6:17 PM EDTSevere Thunderstorm WarningGSPYork58 min
Apr 9, 7:00 PM EDTSevere Thunderstorm WarningGSPChester, York12 min
Apr 9, 7:25 PM EDTSevere Thunderstorm WarningGSPYork38 min
Apr 9, 7:26 PM EDTSevere Thunderstorm WarningGSPCherokee41 min
Apr 9, 7:53 PM EDTSevere Thunderstorm WarningGSPCherokee, York67 min
Apr 9, 2:22 AM EDTSevere Thunderstorm WarningGSPAvery, Mitchell, Yancey53 min
Apr 9, 3:12 AM EDTSevere Thunderstorm WarningGSPAvery, Burke, Caldwell, McDowell, Mitchell, Yancey63 min
Apr 9, 1:02 PM EDTSpecial Weather StatementGSPBuncombe43 min
Apr 9, 1:09 PM EDTSevere Thunderstorm WarningGSPBuncombe, McDowell, Yancey42 min
Apr 9, 1:38 PM EDTSevere Thunderstorm WarningGSPMcDowell, Mitchell, Yancey52 min
Apr 9, 1:46 PM EDTSpecial Weather StatementGSPBuncombe29 min
Apr 9, 2:10 PM EDTSevere Thunderstorm WarningGSPBuncombe, Madison, Yancey24 min
Apr 9, 2:21 PM EDTSevere Thunderstorm WarningGSPAvery, Burke, Caldwell, Mitchell42 min
Apr 9, 2:33 PM EDTSevere Thunderstorm WarningGSPAvery, Burke, McDowell, Mitchell, Yancey57 min
Apr 9, 2:40 PM EDTSevere Thunderstorm WarningGSPBurke, Caldwell28 min
Apr 9, 3:12 PM EDTSevere Thunderstorm WarningGSPBuncombe, McDowell, Yancey48 min
Apr 9, 3:38 PM EDTSpecial Weather StatementGSPIredell37 min
Apr 9, 3:58 PM EDTTornado WarningGSPBurke, Cleveland, McDowell, Rutherford47 min
Apr 9, 3:59 PM EDTSpecial Weather StatementGSPTransylvania46 min
Apr 9, 4:19 PM EDTTornado WarningGSPCleveland, Gaston, Lincoln, Rutherford41 min
Apr 9, 4:57 PM EDTTornado WarningGSPCleveland, Gaston, Lincoln48 min
Apr 9, 5:07 PM EDTSevere Thunderstorm WarningGSPAvery, Madison, Mitchell, Yancey53 min
Apr 9, 5:09 PM EDTSpecial Weather StatementGSPRutherford36 min
Apr 9, 5:15 PM EDTSevere Thunderstorm WarningGSPMcDowell, Rutherford36 min
Apr 9, 5:19 PM EDTSevere Thunderstorm WarningGSPCleveland, Lincoln, Rutherford56 min
Apr 9, 5:40 PM EDTSevere Thunderstorm WarningGSPAvery, Burke, Caldwell, McDowell, Mitchell42 min
Apr 9, 5:43 PM EDTSevere Thunderstorm WarningGSPCleveland, Gaston62 min
Apr 9, 6:05 PM EDTTornado WarningGSPMitchell, Yancey40 min
Apr 9, 6:17 PM EDTSevere Thunderstorm WarningGSPAlexander, Burke, Caldwell, Catawba, Cleveland, Lincoln28 min
Apr 9, 6:25 PM EDTSevere Thunderstorm WarningGSPMecklenburg, Union65 min
Apr 9, 6:37 PM EDTTornado WarningGSPBurke, McDowell, Mitchell, Yancey28 min
Apr 9, 6:40 PM EDTSevere Thunderstorm WarningGSPBuncombe, Haywood, Madison, Swain, Yancey65 min
Apr 9, 6:42 PM EDTSevere Thunderstorm WarningGSPUnion48 min
Apr 9, 6:47 PM EDTSevere Thunderstorm WarningGSPCatawba, Cleveland, Gaston, Lincoln31 min
Apr 9, 7:03 PM EDTSevere Thunderstorm WarningGSPCabarrus, Iredell, Mecklenburg, Rowan40 min
Apr 9, 7:04 PM EDTSevere Thunderstorm WarningGSPBurke, Cleveland, McDowell, Rutherford56 min
Apr 9, 7:09 PM EDTSevere Thunderstorm WarningGSPBuncombe, McDowell, Yancey45 min
Apr 9, 7:45 PM EDTSevere Thunderstorm WarningGSPBuncombe, McDowell, Madison, Mitchell, Yancey60 min
Apr 9, 7:47 PM EDTSevere Thunderstorm WarningGSPBuncombe, Haywood, Henderson, Transylvania36 min
Apr 9, 7:49 PM EDTSevere Thunderstorm WarningGSPMcDowell, Polk, Rutherford26 min

Nearby

Tornado Warnings in South Carolina, 2011Tornado Warnings in North Carolina, 2011Every tornado warning in 2011Tornadoes in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.