Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 66, NWS Columbia, SC

May 14, 2012Aiken County, Barnwell County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at May 14, 2012, 4:41 PM EDT for Aiken County, Barnwell County, South Carolina. It was in force for 49 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: May 14, 2012, 4:41 PM EDT (20:41 UTC)
Expired: May 14, 2012, 5:30 PM EDT
In force: 49 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

Counties Aiken County, SC, Barnwell County, SC

The radar

The Columbia radar (KCAE), 74 km from the middle of the area, began a volume at 20:45 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 14, 5:07 PM EDT	TSTM WND DMG	3 Sw Williston, SC	TREE AND LIMBS DOWN ON PATTERSON RD. PENNY SIZE HAIL IN THE SAME AREA.

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

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.7 hours before the alert went out and 154 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: 518 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 722 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 143 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

347 
WUUS52 KCAE 142041
SVRCAE
SCC003-011-142130-
/O.NEW.KCAE.SV.W.0066.120514T2041Z-120514T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
441 PM EDT MON MAY 14 2012

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN AIKEN COUNTY IN CENTRAL SOUTH CAROLINA
  NORTHERN BARNWELL COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 530 PM EDT

* AT 436 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 NEAR
  NEW ELLENTON...OR 7 MILES NORTH OF SAVANNAH RIVER SITE...AND MOVING
  EAST AT 20 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE WILLISTON AND NEW
  ELLENTON

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.

LAT...LON 3353 8138 3327 8132 3326 8170 3333 8175
      3341 8174
TIME...MOT...LOC 2041Z 253DEG 18KT 3336 8161

$$

1 follow-up statement

710 
WWUS52 KCAE 142104
SVSCAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
504 PM EDT MON MAY 14 2012

SCC003-011-142130-
/O.CON.KCAE.SV.W.0066.000000T0000Z-120514T2130Z/
AIKEN SC-BARNWELL SC-
504 PM EDT MON MAY 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR BARNWELL AND AIKEN COUNTIES...

AT 457 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 6 MILES WEST OF WILLISTON...OR 13 MILES NORTHEAST OF SAVANNAH
RIVER SITE...MOVING EAST AT 20 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ELKO

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1...8 7
7...6 3 3...6 7 7 2.

LAT...LON 3328 8160 3338 8163 3345 8161 3353 8138
      3327 8132
TIME...MOT...LOC 2104Z 253DEG 18KT 3339 8148

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 2:12 PM EDT	Special Weather Statement	CAE	Orangeburg	48 min
May 14, 2:25 PM EDT	Tornado Warning	CAE	Calhoun, Clarendon, Orangeburg	35 min
May 14, 3:33 PM EDT	Special Weather Statement	CAE	Clarendon	27 min
May 14, 3:37 PM EDT	Special Weather Statement	CAE	Aiken	53 min
May 14, 4:46 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Orangeburg	44 min
May 14, 5:25 PM EDT	Special Weather Statement	CAE	Lancaster	35 min
May 14, 5:26 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Barnwell, Orangeburg	34 min
May 14, 5:29 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Orangeburg	46 min
May 14, 5:50 PM EDT	Tornado Warning	CAE	Orangeburg	26 min
May 14, 6:01 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Orangeburg	59 min
May 14, 6:14 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Barnwell	46 min
May 14, 6:30 PM EDT	Special Weather Statement	CAE	Chesterfield	45 min
May 14, 6:58 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Orangeburg	47 min
May 14, 7:03 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Barnwell, Orangeburg	42 min
May 14, 7:22 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield	23 min
May 14, 7:38 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield, Lancaster	52 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2012 Every severe thunderstorm warning in 2012

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.