Alert archive / South Carolina / Tornado Warnings in 2009

Tornado Warning 16, NWS Columbia, SC

May 28, 2009Kershaw County, South Carolina

NWS Columbia, SC issued this tornado warning at May 28, 2009, 7:58 PM EDT for Kershaw County, South Carolina. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 28, 2009, 7:58 PM EDT (23:58 UTC)
Expired
May 28, 2009, 8:23 PM EDT
In force
25 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon

County Kershaw County, SC

The radar

The Columbia radar (KCAE), 88 km from the middle of the area, began a volume at 00:03 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.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 12.0 hours before the alert went out and 182 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-pSkew-T log-p diagram, Charleston AFB, SC at 12:00Z on 2009-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 889 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2009-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -22 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
889 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
568 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-22 m²/s²
0-3 km storm-relative helicity
-47 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 282358
TORCAE
SCC055-290045-
/O.NEW.KCAE.TO.W.0016.090528T2358Z-090529T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
758 PM EDT THU MAY 28 2009

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN KERSHAW COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 845 PM EDT

* AT 756 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER KERSHAW
  COUNTY...OR ABOUT 15 MILES NORTHEAST OF CAMDEN...MOVING NORTHEAST
  AT 15 MPH TOWARD THE CHESTERFIELD AND KERSHAW COUNTY LINE
  NORTHWEST OF MCBEE. A FUNNEL CLOUD HAS BE REPORTED WITH 
  THIS STORM.

* THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
  INDICATED COUNTY.

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 3439 8049 3450 8055 3451 8053 3453 8053
      3461 8040 3459 8039 3456 8037 3454 8037
      3448 8033 3444 8033 3443 8032
TIME...MOT...LOC 2356Z 237DEG 14KT 3446 8049

$$
1 follow-up statement
000 
WWUS52 KCAE 290023
SVSCAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
823 PM EDT THU MAY 28 2009

SCC055-290032-
/O.CAN.KCAE.TO.W.0016.000000T0000Z-090529T0045Z/
KERSHAW SC-
823 PM EDT THU MAY 28 2009

...THE TORNADO WARNING FOR KERSHAW COUNTY IS CANCELLED...

RADAR SHOWS ROTATION HAS MOVED NORTHEASTWARD AND INTO CHESTERFIELD
COUNTY. THE WARNING REMAINS IN EFFECT FOR CHESTERFIELD COUNTY.

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 3439 8049 3450 8055 3451 8053 3453 8053
      3461 8040 3459 8039 3456 8037 3454 8037
      3448 8033 3444 8033 3443 8032
TIME...MOT...LOC 0022Z 237DEG 14KT 3451 8039

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 5:47 PM EDTSevere Thunderstorm WarningCAELancaster73 min
May 28, 7:24 PM EDTSevere Thunderstorm WarningCAEFairfield, Kershaw, Lancaster51 min

Nearby

Tornado Warnings in South Carolina, 2009Every tornado warning in 2009Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.