Alert archive / South Carolina / Tornado Warnings in 2007

Tornado Warning 6, NWS Charleston, SC

April 15, 2007Berkeley County, South Carolina

NWS Charleston, SC issued this tornado warning at Apr 15, 2007, 1:45 AM EDT for Berkeley County, South Carolina. It was in force for 30 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 15, 2007, 1:45 AM EDT (05:45 UTC)
Expired: Apr 15, 2007, 2:15 AM EDT
In force: 30 min
Issued by: NWS Charleston, SC
Area: Counties, with a storm outline in the text

County Berkeley County, SC

The radar

The Charleston,SC radar (KCLX), 121 km from the middle of the area, began a volume at 05:46 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 15, 1:45 AM EDT	TSTM WND DMG	4 E Pinopolis, SC	POWERLINES DOWN ALONG POWERHOUSE ROAD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 5.8 hours before the alert went out and 47 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: 329 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 638 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 186 m²/s²
0-3 km storm-relative helicity: 264 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KCHS 150546
TORCHS
SCC015-150615-
/O.NEW.KCHS.TO.W.0006.070415T0545Z-070415T0615Z/

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

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN BERKELEY COUNTY IN SOUTHEAST SOUTH CAROLINA...

* UNTIL 215 AM EDT

* AT 145 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  PINOPOLIS...MOVING NORTHEAST AT 45 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THE STORM INCLUDE...
  BONNEAU BEACH...BONNEAU...
  SAINT STEPHEN...

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 3329 8014 3317 7998 3335 7976 3351 8003

$$

2 follow-up statements

000 
WWUS52 KCHS 150558
SVSCHS

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

SCC015-150615-
/O.CON.KCHS.TO.W.0006.000000T0000Z-070415T0615Z/
BERKELEY SC-
158 AM EDT SUN APR 15 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 AM EDT FOR BERKELEY
COUNTY...

AT 157 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO. THIS TORNADO WAS APPROACHING THE SOUTH SIDE
OF SAINT STEPHEN...MOVING NORTHEAST AT 45 MPH.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...WILDER...
AND SAINT STEPHEN.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

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 3329 8014 3317 7998 3335 7976 3351 8003

$$

000 
WWUS52 KCHS 150610
SVSCHS

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

SCC015-150620-
/O.EXP.KCHS.TO.W.0006.000000T0000Z-070415T0615Z/
BERKELEY SC-
210 AM EDT SUN APR 15 2007

...THE TORNADO WARNING FOR BERKELEY COUNTY WILL EXPIRE AT 215 AM
EDT...

AT 210 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.

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 3341 8000 3329 7984 3347 7962 3363 7989

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 3:37 AM EDT	Severe Thunderstorm Warning	CHS	Allendale	38 min
Apr 15, 3:44 AM EDT	Tornado Warning	CHS	Allendale	31 min
Apr 15, 4:23 AM EDT	Tornado Warning	CHS	Allendale	27 min
Apr 15, 7:02 AM EDT	Tornado Warning	CHS	Allendale	13 min
Apr 15, 7:39 AM EDT	Tornado Warning	CHS	Allendale	36 min
Apr 15, 9:38 AM EDT	Tornado Warning	CHS	Colleton	39 min
Apr 15, 10:03 AM EDT	Tornado Warning	CHS	Dorchester	27 min
Apr 15, 10:21 AM EDT	Severe Thunderstorm Warning	CHS	Berkeley	39 min
Apr 15, 10:35 AM EDT	Severe Thunderstorm Warning	CHS	Colleton, Dorchester	40 min
Apr 15, 10:59 AM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Charleston	91 min
Apr 15, 11:14 AM EDT	Severe Thunderstorm Warning	CHS	Colleton, Dorchester	37 min
Apr 15, 4:02 PM EDT	Fire Weather Watch	CHS	Allendale, Berkeley, Colleton, Dorchester, Hampton	13 hr

Nearby

Tornado Warnings in South Carolina, 2007 Every tornado warning in 2007 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.