Alert archive / South Carolina / Tornado Warnings in 2011

Tornado Warning 4, NWS Greenville-Spartanburg, SC

February 28, 2011Greenwood County, Laurens County, South Carolina

NWS Greenville-Spartanburg, SC issued this tornado warning at Feb 28, 2011, 6:57 PM EST for Greenwood County, Laurens County, South Carolina. It was in force for 14 min. 1 report 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: Feb 28, 2011, 6:57 PM EST (23:57 UTC)
Expired: Feb 28, 2011, 7:11 PM EST
In force: 14 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Greenwood County, SC, Laurens County, SC

The radar

The Greer radar (KGSP), 80 km from the middle of the area, began a volume at 23:59 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

Time	Report	Where	Remark
Feb 28, 7:00 PM EST	TSTM WND DMG	2 W Dyson, SC	TREES DOWN...A FEW POSSIBLY ON CARS

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.

Issued	Product	Office	Lasted
Feb 28, 1:29 PM EST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 12.0 hours before the alert went out and 231 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: 3 J/kg
Mixed-layer CIN: -301 J/kg
Mixed-layer LCL: 865 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

995 
WFUS52 KGSP 282357
TORGSP
SCC047-059-010030-
/O.NEW.KGSP.TO.W.0004.110228T2357Z-110301T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
657 PM EST MON FEB 28 2011

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL GREENWOOD COUNTY IN UPSTATE SOUTH CAROLINA...
  SOUTH CENTRAL LAURENS COUNTY IN UPSTATE SOUTH CAROLINA...

* UNTIL 730 PM EST

* AT 654 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR NINETY
  SIX...OR 7 MILES EAST OF GREENWOOD...MOVING EAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DYSON...

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 3407 8205 3426 8208 3431 8193 3433 8184
      3429 8188 3425 8190 3420 8193 3413 8186
      3410 8189
TIME...MOT...LOC 2357Z 265DEG 48KT 3418 8199

$$

BSH

1 follow-up statement

252 
WWUS52 KGSP 010011
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
711 PM EST MON FEB 28 2011

SCC047-059-010021-
/O.CAN.KGSP.TO.W.0004.000000T0000Z-110301T0030Z/
LAURENS SC-GREENWOOD SC-
711 PM EST MON FEB 28 2011

...THE TORNADO WARNING FOR EAST CENTRAL GREENWOOD AND SOUTH CENTRAL
LAURENS COUNTIES IS CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS MOVED EAST OF THE AREA.

LAT...LON 3407 8205 3426 8208 3431 8193 3433 8184
      3429 8188 3425 8190 3420 8193 3413 8186
      3410 8189
TIME...MOT...LOC 0011Z 265DEG 48KT 3418 8176

$$

BSH

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 27, 8:21 PM EST	Lake Wind Advisory	GSP	Abbeville, Anderson, Cherokee, Chester, Greenwood, Laurens and 2 more	23 hr
Feb 28, 3:57 PM EST	Severe Thunderstorm Warning	GSP	Oconee, Pickens	63 min
Feb 28, 4:38 PM EST	Severe Thunderstorm Warning	GSP	Anderson, Greenville, Oconee, Pickens, Spartanburg	67 min
Feb 28, 4:59 PM EST	Tornado Warning	GSP	Greenville, Spartanburg	31 min
Feb 28, 5:21 PM EST	Special Weather Statement	GSP	Anderson	39 min
Feb 28, 5:30 PM EST	Severe Thunderstorm Warning	GSP	Anderson, Cherokee, Chester, Greenville, Laurens, Spartanburg and 2 more	60 min
Feb 28, 5:50 PM EST	Severe Thunderstorm Warning	GSP	Abbeville, Anderson, Greenwood, Laurens	55 min
Feb 28, 6:06 PM EST	Severe Thunderstorm Warning	GSP	York	54 min
Feb 28, 6:25 PM EST	Tornado Warning	GSP	Abbeville, Greenwood, Laurens	35 min
Feb 28, 6:42 PM EST	Special Weather Statement	GSP	Chester	48 min
Feb 28, 6:51 PM EST	Severe Thunderstorm Warning	GSP	Abbeville, Greenwood, Laurens	39 min

Nearby

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