Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 75, NWS Columbia, SC

May 14, 2012Chesterfield County, Lancaster County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at May 14, 2012, 7:38 PM EDT for Chesterfield County, Lancaster County, South Carolina. It was in force for 52 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 14, 2012, 7:38 PM EDT (23:38 UTC)
Expired: May 14, 2012, 8:30 PM EDT
In force: 52 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

Counties Chesterfield County, SC, Lancaster County, SC

The radar

The Columbia radar (KCAE), 93 km from the middle of the area, began a volume at 23:38 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, 7:43 PM EDT	TSTM WND DMG	9 Sw Pageland, SC	TREE DOWN ON NATURE RESERVE RD.
May 14, 7:47 PM EDT	TSTM WND DMG	4 Ssw Lancaster, SC	TREE DOWN ON JB DENTON RD AT THE BRIDGE.

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

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.6 hours before the alert went out and 170 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: 26 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 713 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 160 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.

580 
WUUS52 KCAE 142338
SVRCAE
SCC025-057-150030-
/O.NEW.KCAE.SV.W.0075.120514T2338Z-120515T0030Z/

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

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CHESTERFIELD COUNTY IN CENTRAL SOUTH CAROLINA
  CENTRAL LANCASTER COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 830 PM EDT

* AT 729 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
  ELGIN...OR 6 MILES SOUTH OF LANCASTER...AND MOVING EAST AT 15 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE LANCASTER...IRWIN...
  HEATH SPRINGS AND ELGIN

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 3461 8040 3461 8042 3460 8045 3454 8081
      3462 8087 3469 8087 3475 8079 3482 8054
      3482 8049
TIME...MOT...LOC 2338Z 255DEG 14KT 3465 8074

$$

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, 4:41 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Barnwell	49 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

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.