Alert archive / South Carolina / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 40, NWS Columbia, SC

April 16, 20115 counties in South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Apr 16, 2011, 2:48 PM EDT for 5 counties in South Carolina. It was in force for 42 min. 7 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, 2:48 PM EDT (18:48 UTC)
Expired: Apr 16, 2011, 3:30 PM EDT
In force: 42 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

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

The radar

The Columbia radar (KCAE), 96 km from the middle of the area, began a volume at 18:51 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, 3:00 PM EDT	HAIL 1	Summerton, SC	1 INCH HAIL REPORTED BY SHERIFF ON FURSE RD.
Apr 16, 3:05 PM EDT	TSTM WND DMG	Summerton, SC	POWER LINES DOWN AND OUTAGES IN AND AROUND SUMMERTON.
Apr 16, 3:17 PM EDT	TSTM WND DMG	5 W Summerton, SC	TREES DOWN ON GOVERNOR RICHARDS RD IN RIMINI REPORTED BY SHERIFF.
Apr 16, 3:27 PM EDT	TORNADO	9 Ne Manning, SC	A NWS STORM SURVEY FOUND AND EF0 TORNADO IN EASTERN CLARENDON COUNTY. THE PATH CONSISTED OF INTERMITTENT TOUCHDOWNS THAT WAS A LENGTH OF 5 MILES. THE WIDTH RANGED FROM 20 TO 40 YARDS. THE DAMAGE CONSISTED OF DOWNED TREES. THE TORNADO FORMED NEAR BREWINGTON AND
Apr 16, 3:28 PM EDT	HAIL 4.25	7 Ne Manning, SC	SOFTBALL SIZE HAIL AT HWY 301 AND NORTH BREWINGTON ROAD CAUSING DAMAGE TO ROOFS AND VEHICLES.
Apr 16, 3:35 PM EDT	HAIL 1.75	Turbeville, SC	GOLF BALL SIZED HAIL REPORTED BY SHERIFF IN TURBEVILLE.
Apr 16, 3:38 PM EDT	HAIL 4.25	Turbeville, SC	SOFTBALL SIZE HAIL REPORTED AT FIRE STATION 2. TIME ESTIMATED FROM RADAR.

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, 12:02 PM EDT	Tornado Watch PDS	SPC	11 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 6.8 hours before the alert went out and 94 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.

683 
WUUS52 KCAE 161848
SVRCAE
SCC017-027-061-075-085-161930-
/O.NEW.KCAE.SV.W.0040.110416T1848Z-110416T1930Z/

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

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN LEE COUNTY IN CENTRAL SOUTH CAROLINA
  SOUTHEASTERN CALHOUN COUNTY IN CENTRAL SOUTH CAROLINA
  SUMTER COUNTY IN CENTRAL SOUTH CAROLINA
  CLARENDON COUNTY IN CENTRAL SOUTH CAROLINA
  EASTERN ORANGEBURG COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 330 PM EDT

* AT 243 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
  ELLOREE...OR 15 MILES EAST OF BROOKDALE...AND MOVING NORTHEAST AT
  50 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE SUMTER...SUMMERTON...
  SOUTH SUMTER...MULBERRY...MILLWOOD...MANNING AND ELLOREE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 PM 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.


&&

LAT...LON 3382 7991 3377 7999 3372 7997 3371 7999
      3350 8009 3349 8014 3346 8014 3346 8021
      3343 8022 3353 8065 3375 8061 3399 8043
      3411 8009 3399 7990 3394 7997 3389 7995
      3390 7992 3388 7988
TIME...MOT...LOC 1848Z 240DEG 45KT 3357 8052

$$

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, 1:03 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Richland	42 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, 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.