Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 113, NWS Greenville-Spartanburg, SC

May 3, 2011Oconee County, South Carolina; Franklin County, Stephens County, Georgia

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 3, 2011, 7:02 PM EDT for Oconee County, South Carolina; Franklin County, Stephens County, Georgia. It was in force for 32 min. 2 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: May 3, 2011, 7:02 PM EDT (23:02 UTC)
Expired: May 3, 2011, 7:34 PM EDT
In force: 32 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Franklin County, GA, Stephens County, GA, Oconee County, SC

The radar

The Greer radar (KGSP), 87 km from the middle of the area, began a volume at 23:03 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
May 3, 7:08 PM EDT	HAIL 0.5	7 Ese Toccoa, GA	MARBLE SIZED HAIL REPORTED ON DAVIS ROAD.
May 3, 7:09 PM EDT	HAIL 0.75	2 Se Eastanolee, GA

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

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.0 hours before the alert went out and 189 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: 4 J/kg
Mixed-layer CIN: -259 J/kg
Mixed-layer LCL: 931 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 161 m²/s²
0-3 km storm-relative helicity: 205 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.

703 
WUUS52 KGSP 032302
SVRGSP
GAC119-257-SCC073-040000-
/O.NEW.KGSP.SV.W.0113.110503T2302Z-110504T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
702 PM EDT TUE MAY 3 2011

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  STEPHENS COUNTY IN NORTHEAST GEORGIA...
  NORTHERN FRANKLIN COUNTY IN NORTHEAST GEORGIA...
  OCONEE COUNTY IN UPSTATE SOUTH CAROLINA...

* UNTIL 800 PM EDT

* AT 659 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
  SOUTH OF BOYDVILLE...OR 9 MILES SOUTHWEST OF TOCCOA...MOVING
  NORTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BOYDVILLE...
  EASTANOLEE AND TOCCOA...
  AVALON AND MARTIN...
  LAKE HARTWELL AND WHITWORTH...
  WESTMINSTER...
  OAKWAY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE IN THE PATH OF THIS SEVERE THUNDERSTORM SHOULD BE ALERT FOR
LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY
RAIN CAN OCCUR WITH ANY THUNDERSTORM. SEEK SHELTER INDOORS AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM PASSES.

TO REPORT 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 3436 8339 3442 8339 3446 8340 3448 8346
      3468 8335 3503 8295 3482 8290 3479 8288
      3474 8290 3473 8286 3470 8287 3465 8284
      3449 8306
TIME...MOT...LOC 2302Z 233DEG 41KT 3448 8337

$$
ARK

1 follow-up statement

765 
WWUS52 KGSP 032334
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
734 PM EDT TUE MAY 3 2011

GAC119-257-SCC073-032344-
/O.CAN.KGSP.SV.W.0113.000000T0000Z-110504T0000Z/
STEPHENS GA-FRANKLIN GA-OCONEE SC-
734 PM EDT TUE MAY 3 2011

...THE SEVERE THUNDERSTORM WARNING FOR OCONEE...NORTHERN FRANKLIN AND
STEPHENS COUNTIES IS CANCELLED...

THE STORM THAT HAD PROMPTED THE WARNING HAS WEAKENED TO BELOW SEVERE 
LIMITS.

LAT...LON 3436 8339 3442 8339 3446 8340 3448 8346
      3468 8335 3503 8295 3482 8290 3479 8288
      3474 8290 3473 8286 3470 8287 3465 8284
      3449 8306
TIME...MOT...LOC 2334Z 233DEG 41KT 3470 8302

$$

ARK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 4:45 PM EDT	Special Weather Statement	GSP	Anderson, Oconee, Pickens	45 min
May 3, 5:14 PM EDT	Special Weather Statement	GSP	Oconee, Pickens	46 min
May 3, 6:35 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Spartanburg	38 min
May 3, 7:00 PM EDT	Special Weather Statement	GSP	Abbeville	45 min
May 3, 7:25 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Greenwood	65 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2011 Severe Thunderstorm Warnings in South Carolina, 2011 Every severe thunderstorm warning 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.