Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 108, NWS Columbia, SC

July 1, 2012Kershaw County, Lancaster County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Jul 1, 2012, 2:12 PM EDT for Kershaw County, Lancaster County, South Carolina. It was in force for 48 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: Jul 1, 2012, 2:12 PM EDT (18:12 UTC)
Expired: Jul 1, 2012, 3:00 PM EDT
In force: 48 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

Counties Kershaw County, SC, Lancaster County, SC

The radar

The Columbia radar (KCAE), 85 km from the middle of the area, began a volume at 18:15 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
Jul 1, 2:35 PM EDT	HAIL 1	3 Sw Kershaw, SC	QUARTER SIZE HAIL ON 3 CS ROAD.

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
Jul 1, 2:01 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.2 hours before the alert went out and 182 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: 1262 J/kg
Mixed-layer CIN: -246 J/kg
Mixed-layer LCL: 2188 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 61 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.

161 
WUUS52 KCAE 011812
SVRCAE
SCC055-057-011900-
/O.NEW.KCAE.SV.W.0108.120701T1812Z-120701T1900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
212 PM EDT SUN JUL 1 2012

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN KERSHAW COUNTY IN CENTRAL SOUTH CAROLINA
  SOUTHEASTERN LANCASTER COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 300 PM EDT

* AT 205 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
  HEATH SPRINGS...OR 14 MILES SOUTHEAST OF LANCASTER...AND MOVING
  SOUTHEAST AT 5 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE KERSHAW AND HEATH
  SPRINGS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
SUNDAY EVENING FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA.

&&

LAT...LON 3458 8038 3456 8037 3454 8037 3430 8056
      3448 8075 3461 8070
TIME...MOT...LOC 1811Z 013DEG 3KT 3455 8066

$$

LM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 2:12 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield	48 min
Jul 1, 2:51 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield, Kershaw	54 min
Jul 1, 2:52 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Edgefield, McCormick	53 min
Jul 1, 2:55 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield	50 min
Jul 1, 3:16 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Richland, Sumter	59 min
Jul 1, 3:30 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield, Kershaw, Lancaster	60 min
Jul 1, 3:42 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Edgefield, Lexington, McCormick, Saluda	63 min
Jul 1, 3:44 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield, Kershaw, Richland	46 min
Jul 1, 3:49 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield	56 min
Jul 1, 4:12 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Lexington, Richland	48 min
Jul 1, 4:27 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield, Kershaw, Lancaster	48 min
Jul 1, 4:32 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield, Kershaw, Lexington, Newberry, Richland, Sumter	43 min
Jul 1, 4:41 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield, Saluda	49 min
Jul 1, 4:49 PM EDT	Areal Flood Advisory	CAE	Lexington, Richland	3 hr
Jul 1, 4:58 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Lexington, Newberry, Richland, Saluda, Sumter	47 min
Jul 1, 5:02 PM EDT	Severe Thunderstorm Warning	CAE	McCormick	43 min
Jul 1, 5:21 PM EDT	Flash Flood Warning	CAE	Richland	87 min
Jul 1, 5:26 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Richland, Sumter	49 min
Jul 1, 5:43 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Edgefield, McCormick	47 min
Jul 1, 5:45 PM EDT	Special Weather Statement	CAE	Lexington, Richland, Sumter	60 min
Jul 1, 6:10 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon	50 min
Jul 1, 6:28 PM EDT	Severe Thunderstorm Warning	CAE	Saluda	32 min
Jul 1, 6:58 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Barnwell, Clarendon, Orangeburg	62 min
Jul 1, 7:04 PM EDT	Severe Thunderstorm Warning	CAE	Lexington	26 min
Jul 1, 7:18 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield, Kershaw, Lancaster	72 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.