Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 216, NWS Columbia, SC

August 2, 20125 counties in South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Aug 2, 2012, 3:19 PM EDT for 5 counties in South Carolina. It was in force for 56 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, 3:19 PM EDT (19:19 UTC)
Expired: Aug 2, 2012, 4:15 PM EDT
In force: 56 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

Counties Calhoun County, SC, Clarendon County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 43 km from the middle of the area, began a volume at 19:22 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, 3:52 PM EDT	TSTM WND DMG	2 Ne Elloree, SC	HIGHWAY PATROL REPORTED TREES DOWN TEE VEE RD AND RACETRACK RD NE OF ELLOREE.
Aug 2, 4:05 PM EDT	TSTM WND DMG	4 Ene Elloree, SC	TREES DOWN IN THE BACKYARD OF PARK RANGER HOME RESIDENCE
Aug 2, 4:10 PM EDT	TSTM WND DMG	5 E Elloree, SC	PARK RANGER REPORTED LARGE BRANCHES DOWN IN SANTEE STATE PARK

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, 7.3 hours before the alert went out and 114 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.

786 
WUUS52 KCAE 021919
SVRCAE
SCC017-027-075-079-085-022015-
/O.NEW.KCAE.SV.W.0216.120802T1919Z-120802T2015Z/

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

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN RICHLAND COUNTY IN CENTRAL SOUTH CAROLINA
  CALHOUN COUNTY IN CENTRAL SOUTH CAROLINA
  SOUTHWESTERN SUMTER COUNTY IN CENTRAL SOUTH CAROLINA
  WESTERN CLARENDON COUNTY IN CENTRAL SOUTH CAROLINA
  NORTHERN ORANGEBURG COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 415 PM EDT

* AT 317 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
  ST. MATTHEWS...OR 15 MILES NORTH OF BROOKDALE...AND MOVING EAST AT
  10 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE ST. MATTHEWS

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 3351 8045 3364 8106 3373 8098 3376 8092
      3377 8095 3389 8084 3384 8039
TIME...MOT...LOC 1919Z 288DEG 8KT 3373 8076

$$

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, 3:46 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, 5:33 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Richland	57 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.