Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 220, NWS Columbia, SC

August 2, 2012Kershaw County, Richland County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Aug 2, 2012, 5:33 PM EDT for Kershaw County, Richland County, South Carolina. It was in force for 57 min. 3 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: Aug 2, 2012, 5:33 PM EDT (21:33 UTC)
Expired: Aug 2, 2012, 6:30 PM EDT
In force: 57 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

Counties Kershaw County, SC, Richland County, SC

The radar

The Columbia radar (KCAE), 38 km from the middle of the area, began a volume at 21:35 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
Aug 2, 5:47 PM EDT	HAIL 1	3 Nne Dentsville, SC	DHEC EMPLOYEE REPORTED QUARTER-SIZE AT FARROW RD AND HARDSCRABBLE RD
Aug 2, 5:55 PM EDT	TSTM WND DMG	4 Nne Dentsville, SC	SC HIGHWAY PATROL REPORTING TREES DOWN ON BRICKYARD RD
Aug 2, 5:55 PM EDT	HAIL 1	Dentsville, SC	PUBLIC REPORT OF QUARTER-SIZE HAIL IN DENTSVILLE

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, 9.6 hours before the alert went out and 150 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: 1922 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 1137 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

826 
WUUS52 KCAE 022133
SVRCAE
SCC055-079-022230-
/O.NEW.KCAE.SV.W.0220.120802T2133Z-120802T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
533 PM EDT THU AUG 2 2012

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN KERSHAW COUNTY IN CENTRAL SOUTH CAROLINA
  RICHLAND COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 630 PM EDT

* AT 531 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
  DENTSVILLE. THIS STORM WAS NEARLY STATIONARY.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE FIVE POINTS...FORT
  JACKSON...WOODFIELDS...ST. ANDREWS...FOREST ACRES...DENTSVILLE...
  COLUMBIA AND ARCADIA LAKES

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA.

&&

LAT...LON 3412 8057 3410 8059 3411 8062 3410 8061
      3408 8064 3408 8062 3407 8063 3406 8062
      3386 8078 3403 8111 3406 8112 3424 8103
      3425 8099
TIME...MOT...LOC 2133Z 168DEG 1KT 3409 8094

$$

HC

1 follow-up statement

449 
WWUS52 KCAE 022218
SVSCAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
618 PM EDT THU AUG 2 2012

SCC055-022228-
/O.CAN.KCAE.SV.W.0220.000000T0000Z-120802T2230Z/
KERSHAW SC-
618 PM EDT THU AUG 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR KERSHAW COUNTY IS CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA.

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 3390 8086 3403 8111 3406 8112 3423 8103
      3420 8094 3409 8079 3405 8078
TIME...MOT...LOC 2218Z 168DEG 1KT 3410 8094

$$

SCC079-022230-
/O.CON.KCAE.SV.W.0220.000000T0000Z-120802T2230Z/
RICHLAND SC-
618 PM EDT THU AUG 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR RICHLAND COUNTY...

AT 614 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR DENTSVILLE. THIS STORM WAS NEARLY STATIONARY.

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS AND LARGE HAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA.

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 3390 8086 3403 8111 3406 8112 3423 8103
      3420 8094 3409 8079 3405 8078
TIME...MOT...LOC 2218Z 168DEG 1KT 3410 8094

$$

HC

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 1:38 PM EDT	Special Weather Statement	CAE	Lexington	52 min
Aug 2, 1:45 PM EDT	Severe Thunderstorm Warning	CAE	Lexington	45 min
Aug 2, 1:48 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Barnwell, Orangeburg	57 min
Aug 2, 2:29 PM EDT	Areal Flood Advisory	CAE	Bamberg, Barnwell, Orangeburg	2 hr
Aug 2, 2:46 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Orangeburg	59 min
Aug 2, 2:51 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Barnwell	39 min
Aug 2, 3:19 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Orangeburg, Richland, Sumter	56 min
Aug 2, 3:46 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Orangeburg	44 min
Aug 2, 4:18 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Richland, Sumter	57 min
Aug 2, 5:10 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Kershaw, Lee, Sumter	50 min
Aug 2, 5:32 PM EDT	Areal Flood Advisory	CAE	Edgefield, McCormick	58 min
Aug 2, 6:08 PM EDT	Areal Flood Advisory	CAE	Richland	52 min
Aug 2, 7:04 PM EDT	Special Weather Statement	CAE	Chesterfield	56 min
Aug 2, 7:33 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield	42 min
Aug 2, 7:52 PM EDT	Areal Flood Advisory	CAE	Fairfield	53 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.