Alert archive / South Carolina / Tornado Warnings in 2009

Tornado Warning 8, NWS Columbia, SC

April 11, 2009Barnwell County, South Carolina

NWS Columbia, SC issued this tornado warning at Apr 11, 2009, 12:05 AM EDT for Barnwell County, South Carolina. It was in force for 40 min. 1 report 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 11, 2009, 12:05 AM EDT (04:05 UTC)
Expired: Apr 11, 2009, 12:45 AM EDT
In force: 40 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

County Barnwell County, SC

The radar

The Charleston,SC radar (KCLX), 67 km from the middle of the area, began a volume at 04:07 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 11, 12:36 AM EDT	HAIL 1	3 Sse Barnwell, SC	BARNWELL COUNTY DISPATCH REPORTED ONE INCH HAIL AT INTERSECTION OF HWYS 278/3/300.

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 10, 9:24 PM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 4.1 hours before the alert went out and 138 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1295 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 197 m²/s²
0-3 km storm-relative helicity: 258 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.

000 
WFUS52 KCAE 110405
TORCAE
SCC011-110445-
/O.NEW.KCAE.TO.W.0008.090411T0405Z-090411T0445Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
1205 AM EDT SAT APR 11 2009

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN BARNWELL COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 1245 AM EDT

* AT 1205 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 24 MILES WEST OF
  BARNWELL...OR ABOUT 15 MILES NORTHEAST OF WAYNESBORO...MOVING EAST
  AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  SNELLING...KLINE AND HILDA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM EDT SATURDAY MORNING
FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL 100 AM EDT SATURDAY MORNING 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 IN COLUMBIA TOLL FREE
AT 1 800 7 7 5 7 1 9 9.

LAT...LON 3309 8164 3311 8167 3319 8176 3323 8171
      3329 8121 3328 8121 3318 8121 3318 8122
      3311 8122 3310 8128 3310 8137 3315 8153
      3309 8160
TIME...MOT...LOC 0405Z 270DEG 38KT 3317 8178

$$

SJN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 8:18 PM EDT	Severe Thunderstorm Warning	CAE	McCormick	42 min
Apr 10, 8:29 PM EDT	Severe Thunderstorm Warning	CAE	McCormick	46 min
Apr 10, 8:54 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield, Saluda	51 min
Apr 10, 9:24 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Lexington, Newberry, Richland	51 min
Apr 10, 9:40 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Lexington, Richland	50 min
Apr 10, 10:06 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Fairfield, Kershaw, Lee, Richland, Sumter	24 min
Apr 10, 10:27 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield	48 min
Apr 10, 10:31 PM EDT	Severe Thunderstorm Warning	CAE	Aiken	44 min
Apr 10, 10:34 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Kershaw, Lee, Richland, Sumter	56 min
Apr 10, 10:41 PM EDT	Tornado Warning	CAE	Aiken	34 min
Apr 10, 11:12 PM EDT	Tornado Warning	CAE	Aiken, Barnwell, Orangeburg	48 min
Apr 10, 11:22 PM EDT	Areal Flood Advisory	CAE	Aiken, Barnwell	113 min
Apr 10, 11:38 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Calhoun, Orangeburg	67 min
Apr 10, 11:51 PM EDT	Tornado Warning	CAE	Bamberg, Calhoun, Orangeburg	39 min
Apr 11, 12:49 AM EDT	Severe Thunderstorm Warning	CAE	Bamberg	26 min
Apr 11, 1:12 AM EDT	Tornado Warning	CAE	Barnwell	48 min
Apr 11, 4:16 AM EDT	River Flood Warning	CAE	Edgefield, McCormick	16 hr

Nearby

Tornado Warnings in South Carolina, 2009 Every tornado warning in 2009 Tornadoes in 2009

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.