Alert archive / South Carolina / Tornado Warnings in 2007

Tornado Warning 14, NWS Charleston, SC

April 15, 2007Dorchester County, South Carolina

NWS Charleston, SC issued this tornado warning at Apr 15, 2007, 10:03 AM EDT for Dorchester County, South Carolina. It was in force for 27 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
Apr 15, 2007, 10:03 AM EDT (14:03 UTC)
Expired
Apr 15, 2007, 10:30 AM EDT
In force
27 min
Issued by
NWS Charleston, SC
Area
Counties, with a storm outline in the text

County Dorchester County, SC

The radar

The Charleston,SC radar (KCLX), 77 km from the middle of the area, began a volume at 14:04 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 15, 8:08 AM EDTTornado WatchSPC7 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 2.1 hours before the alert went out and 57 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 2007-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 948 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2007-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 291 square meters per square second.1939587897117Sfc1 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
948 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
589 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
291 m²/s²
0-3 km storm-relative helicity
339 m²/s²
Significant tornado parameter
1.9
Supercell composite
6.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS52 KCHS 151403
TORCHS
SCC035-151430-
/O.NEW.KCHS.TO.W.0014.070415T1403Z-070415T1430Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
1003 AM EDT SUN APR 15 2007

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* TORNADO WARNING FOR...
  DORCHESTER COUNTY IN SOUTHEAST SOUTH CAROLINA...

* UNTIL 1030 AM EDT

* AT 959 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES SOUTH OF
  SAINT GEORGE...MOVING NORTHEAST AT 60 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THE STORM INCLUDE...
  SAINT GEORGE...
  HARLEYVILLE...DORCHESTER...

A TORNADO MAY FORM AT ANY TIME. TAKE COVER NOW. ABANDON MOBILE HOMES
AND VEHICLES. MOVE TO AN INTERIOR ROOM OR HALLWAY ON THE LOWEST
FLOOR. STAY AWAY FROM WINDOWS.

TO REPORT SEVERE WEATHER ONLY...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN CHARLESTON TOLL FREE AT 1-888-383-2024.

LAT...LON 3312 8069 3304 8054 3315 8031 3325 8035
      3328 8044 3333 8050

$$
1 follow-up statement
000 
WWUS52 KCHS 151426
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
1026 AM EDT SUN APR 15 2007

SCC035-151436-
/O.EXP.KCHS.TO.W.0014.000000T0000Z-070415T1430Z/
DORCHESTER SC-
1026 AM EDT SUN APR 15 2007

...THE TORNADO WARNING FOR DORCHESTER COUNTY WILL EXPIRE AT 1030 AM
EDT...

AT 1026 AM EDT...RADAR INDICATED THAT THE TORNADIC THUNDERSTORM WHICH
PROMPTED THE WARNING HAD MOVED OUT OF THE WARNED AREA...THUS THE
TORNADO WARNING BEEN ALLOWED TO EXPIRE.

STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS...TV OR YOUR LOCAL NEWS 
SOURCE FOR THE LATEST WEATHER INFORMATION. 

TO REPORT SEVERE WEATHER ONLY...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN CHARLESTON TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR
REPORTS TO CHS.SKYWARN@NOAA.GOV.

LAT...LON 3312 8069 3304 8054 3315 8031 3325 8035
      3328 8044 3333 8050

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 1:45 AM EDTTornado WarningCHSBerkeley30 min
Apr 15, 3:37 AM EDTSevere Thunderstorm WarningCHSAllendale38 min
Apr 15, 3:44 AM EDTTornado WarningCHSAllendale31 min
Apr 15, 4:23 AM EDTTornado WarningCHSAllendale27 min
Apr 15, 7:02 AM EDTTornado WarningCHSAllendale13 min
Apr 15, 7:39 AM EDTTornado WarningCHSAllendale36 min
Apr 15, 9:38 AM EDTTornado WarningCHSColleton39 min
Apr 15, 10:21 AM EDTSevere Thunderstorm WarningCHSBerkeley39 min
Apr 15, 10:35 AM EDTSevere Thunderstorm WarningCHSColleton, Dorchester40 min
Apr 15, 10:59 AM EDTSevere Thunderstorm WarningCHSBerkeley, Charleston91 min
Apr 15, 11:14 AM EDTSevere Thunderstorm WarningCHSColleton, Dorchester37 min
Apr 15, 4:02 PM EDTFire Weather WatchCHSAllendale, Berkeley, Colleton, Dorchester, Hampton13 hr

Nearby

Tornado Warnings in South Carolina, 2007Every tornado warning in 2007Tornadoes in 2007

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.