Alert archive / South Carolina / Tornado Warnings in 2011

Tornado Warning 16, NWS Greenville-Spartanburg, SC

April 9, 2011York County, South Carolina

NWS Greenville-Spartanburg, SC issued this tornado warning at Apr 9, 2011, 6:06 PM EDT for York County, South Carolina. It was in force for 12 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 9, 2011, 6:06 PM EDT (22:06 UTC)
Expired: Apr 9, 2011, 6:18 PM EDT
In force: 12 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

County York County, SC

The radar

The Columbia radar (KCAE), 103 km from the middle of the area, began a volume at 22:07 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 9, 2:44 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.1 hours before the alert went out and 165 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: 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.

466 
WFUS52 KGSP 092206
TORGSP
SCC091-092230-
/O.NEW.KGSP.TO.W.0016.110409T2206Z-110409T2230Z/

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

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN YORK COUNTY IN UPSTATE SOUTH CAROLINA...

* UNTIL 630 PM EDT

* AT 605 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR CATAWBA...
  OR 9 MILES SOUTHEAST OF ROCK HILL...MOVING SOUTHEAST AT 25 MPH.

* THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
  INDICATED COUNTY.

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 3482 8089 3482 8103 3483 8109 3499 8090
      3490 8087 3484 8086
TIME...MOT...LOC 2207Z 310DEG 20KT 3486 8088

$$

NED

1 follow-up statement

358 
WWUS52 KGSP 092218
SVSGSP

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

SCC091-092228-
/O.CAN.KGSP.TO.W.0016.000000T0000Z-110409T2230Z/
YORK SC-
618 PM EDT SAT APR 9 2011

...THE TORNADO WARNING FOR SOUTHEASTERN YORK COUNTY IS CANCELLED...

LAT...LON 3482 8089 3482 8103 3483 8109 3499 8090
      3490 8087 3484 8086
TIME...MOT...LOC 2218Z 310DEG 20KT 3482 8082

$$

NED

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 3:43 PM EDT	Severe Thunderstorm Warning	GSP	Oconee	62 min
Apr 9, 4:29 PM EDT	Severe Thunderstorm Warning	GSP	Oconee, Pickens	46 min
Apr 9, 4:52 PM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville, Pickens	53 min
Apr 9, 5:24 PM EDT	Tornado Warning	GSP	York	36 min
Apr 9, 5:26 PM EDT	Severe Thunderstorm Warning	GSP	York	64 min
Apr 9, 5:40 PM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville, Laurens	48 min
Apr 9, 5:53 PM EDT	Severe Thunderstorm Warning	GSP	York	52 min
Apr 9, 5:56 PM EDT	Severe Thunderstorm Warning	GSP	York	34 min
Apr 9, 6:17 PM EDT	Severe Thunderstorm Warning	GSP	York	58 min
Apr 9, 7:00 PM EDT	Severe Thunderstorm Warning	GSP	Chester, York	12 min
Apr 9, 7:25 PM EDT	Severe Thunderstorm Warning	GSP	York	38 min
Apr 9, 7:26 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee	41 min
Apr 9, 7:53 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee, York	67 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.