Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 63, NWS Columbia, SC

April 28, 2011Burke County, Richmond County, Georgia; Aiken County, Barnwell County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Apr 28, 2011, 7:08 AM EDT for Burke County, Richmond County, Georgia; Aiken County, Barnwell County, South Carolina. It was in force for 52 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: Apr 28, 2011, 7:08 AM EDT (11:08 UTC)
Expired: Apr 28, 2011, 8:00 AM EDT
In force: 52 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

Counties Burke County, GA, Richmond County, GA, Aiken County, SC, Barnwell County, SC

The radar

The Charleston,SC radar (KCLX), 104 km from the middle of the area, began a volume at 11:09 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
Apr 28, 7:23 AM EDT	HAIL 1	4 Ssw Waynesboro, GA	NICKEL TO QUARTER SIZE HAIL REPORTED BY THE BURKE COUNTY SHERIFF.

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
Apr 28, 4:30 AM EDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 11.1 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: 1949 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 686 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.7

Open this sounding in Storm Lab

The text

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

284 
WUUS52 KCAE 281108
SVRCAE
GAC033-245-SCC003-011-281200-
/O.NEW.KCAE.SV.W.0063.110428T1108Z-110428T1200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
708 AM EDT THU APR 28 2011

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN RICHMOND COUNTY IN EAST CENTRAL GEORGIA
  BURKE COUNTY IN EAST CENTRAL GEORGIA
  SOUTHWESTERN BARNWELL COUNTY IN CENTRAL SOUTH CAROLINA
  SOUTHWESTERN AIKEN COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 800 AM EDT

* AT 700 AM 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 15
  MILES WEST OF WAYNESBORO...AND MOVING NORTHEAST AT 50 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE SAVANNAH RIVER SITE...
  WAYNESBORO AND JACKSON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE...TOLL FREE 1 877 6 3
3...6 7 7 2.

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON EDT THURSDAY FOR EAST
CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA.

&&

LAT...LON 3289 8227 3316 8226 3345 8170 3311 8158
TIME...MOT...LOC 1108Z 246DEG 42KT 3304 8215

$$

LM

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 28, 2:28 AM EDT	Severe Thunderstorm Warning	CAE	Lincoln	47 min
Apr 28, 3:48 AM EDT	Severe Thunderstorm Warning	CAE	Columbia, McDuffie	42 min
Apr 28, 4:26 AM EDT	Severe Thunderstorm Warning	CAE	Columbia, Lincoln, McDuffie	34 min
Apr 28, 4:56 AM EDT	Severe Thunderstorm Warning	CAE	Columbia, Lincoln, McDuffie	49 min
Apr 28, 5:17 AM EDT	Severe Thunderstorm Warning	CAE	Columbia, Richmond	43 min
Apr 28, 5:24 AM EDT	Areal Flood Advisory	CAE	Columbia, McDuffie	3 hr
Apr 28, 6:12 AM EDT	Severe Thunderstorm Warning	CAE	Burke, Richmond	48 min
Apr 28, 7:49 AM EDT	Severe Thunderstorm Warning	CAE	Burke	56 min
Apr 28, 2:57 AM EDT	Severe Thunderstorm Warning	CAE	Edgefield, McCormick	48 min
Apr 28, 3:24 AM EDT	Severe Thunderstorm Warning	CAE	Newberry, Saluda	51 min
Apr 28, 4:15 AM EDT	Severe Thunderstorm Warning	CAE	Edgefield, McCormick	45 min
Apr 28, 4:50 AM EDT	Severe Thunderstorm Warning	CAE	Aiken, Edgefield, Lexington, Saluda	40 min
Apr 28, 5:03 AM EDT	Severe Thunderstorm Warning	CAE	Edgefield	42 min
Apr 28, 5:31 AM EDT	Severe Thunderstorm Warning	CAE	Lexington, Richland	44 min
Apr 28, 5:41 AM EDT	Severe Thunderstorm Warning	CAE	Aiken, Edgefield, Saluda	49 min
Apr 28, 5:57 AM EDT	Severe Thunderstorm Warning	CAE	Lexington, Richland	48 min
Apr 28, 6:28 AM EDT	Severe Thunderstorm Warning	CAE	Aiken, Calhoun, Lexington, Orangeburg, Richland	47 min
Apr 28, 6:40 AM EDT	Severe Thunderstorm Warning	CAE	Aiken, Bamberg, Barnwell, Orangeburg	65 min
Apr 28, 6:54 AM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lee, Richland, Sumter	66 min
Apr 28, 7:16 AM EDT	Severe Thunderstorm Warning	CAE	Chesterfield	44 min
Apr 28, 7:20 AM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Lee, Orangeburg, Richland, Sumter	55 min
Apr 28, 7:30 AM EDT	Tornado Warning	CAE	Calhoun, Clarendon, Richland, Sumter	45 min
Apr 28, 8:05 AM EDT	Tornado Warning	CAE	Lee, Sumter	25 min
Apr 28, 8:16 AM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Lee, Orangeburg, Richland, Sumter	59 min
Apr 28, 8:45 AM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Clarendon, Orangeburg	60 min
Apr 28, 9:22 AM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Lee, Orangeburg, Sumter	53 min
Apr 28, 10:59 AM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Orangeburg, Richland	31 min
Apr 28, 11:16 AM EDT	Severe Thunderstorm Warning	CAE	Chesterfield, Fairfield, Kershaw, Lee, Richland, Sumter	44 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.