Alert archive / South Carolina / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 35, NWS Columbia, SC

April 16, 2011Kershaw County, Richland County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Apr 16, 2011, 1:03 PM EDT for Kershaw County, Richland County, South Carolina. It was in force for 42 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: Apr 16, 2011, 1:03 PM EDT (17:03 UTC)
Expired: Apr 16, 2011, 1:45 PM EDT
In force: 42 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 17:04 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
Apr 16, 1:20 PM EDT	TSTM WND DMG	2 Ne Columbia, SC	TREES DOWN AND ON POWER LINES AT HWY 76 AND HILLER ROAD.
Apr 16, 1:20 PM EDT	HAIL 1	4 N Columbia, SC	QUARTER SIZE HAIL ALONG WITH TREES AND POWER LINES DOWN AT THE VILLAGE AT SANDHILLS.
Apr 16, 1:52 PM EDT	TSTM WND DMG	Camden, SC	POWER LINES DOWN IN CAMDEN.

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
Apr 16, 5:57 AM EDT	Tornado Watch	SPC	8 hr
Apr 16, 12:02 PM EDT	Tornado Watch PDS	SPC	11 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 5.1 hours before the alert went out and 163 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: 421 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 687 m above ground
0-6 km bulk shear: 0 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 0 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.

925 
WUUS52 KCAE 161703
SVRCAE
SCC055-079-161745-
/O.NEW.KCAE.SV.W.0035.110416T1703Z-110416T1745Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
103 PM EDT SAT APR 16 2011

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

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

* UNTIL 145 PM EDT

* AT 100 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR FOREST ACRES...OR NEAR COLUMBIA...AND MOVING
  NORTHEAST AT 40 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE FORT JACKSON...
  WOODFIELDS...LUGOFF...FOREST ACRES...DENTSVILLE...CAMDEN AND
  ARCADIA LAKES

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

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 TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SATURDAY EVENING
FOR CENTRAL SOUTH CAROLINA.

&&

LAT...LON 3395 8101 3408 8102 3427 8086 3427 8083
      3436 8078 3449 8067 3417 8048
TIME...MOT...LOC 1703Z 356DEG 33KT 3397 8100

$$

SMITH

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 16, 12:05 AM EDT	Special Weather Statement	CAE	McCormick	55 min
Apr 16, 1:26 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Kershaw, Richland, Sumter	49 min
Apr 16, 1:33 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield, Kershaw, Lancaster, Lee	57 min
Apr 16, 1:56 PM EDT	Tornado Warning	CAE	Chesterfield	19 min
Apr 16, 2:11 PM EDT	Severe Thunderstorm Warning	CAE	Lee, Sumter	49 min
Apr 16, 2:17 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Orangeburg, Richland, Sumter	43 min
Apr 16, 2:48 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Lee, Orangeburg, Sumter	42 min
Apr 16, 3:12 PM EDT	Tornado Warning	CAE	Clarendon	33 min
Apr 16, 3:57 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Orangeburg	48 min
Apr 16, 4:12 PM EDT	Tornado Warning	CAE	Clarendon	33 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2011 Every severe thunderstorm warning in 2011

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.