Alert archive / Georgia / Tornado Warnings in 2004

Tornado Warning 13, NWS Charleston, SC

August 12, 2004Bryan County, Chatham County, Georgia

NWS Charleston, SC issued this tornado warning at Aug 12, 2004, 7:59 PM EDT for Bryan County, Chatham County, Georgia. It was in force for 31 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
Aug 12, 2004, 7:59 PM EDT (23:59 UTC)
Expired
Aug 12, 2004, 8:30 PM EDT
In force
31 min
Issued by
NWS Charleston, SC
Area
Counties, with a storm outline in the text

Counties Bryan County, GA, Chatham County, GA

The radar

The Charleston,SC radar (KCLX), 82 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 153 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 2004-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3311 joules per kilogram.LCLEL10008507005003002001001 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 2004-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 square meters per square second.193958Sfc1 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
3311 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
489 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
117 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
1.7
Supercell composite
10.5

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KCHS 122359
TORCHS
GAC029-051-130030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
759 PM EDT THU AUG 12 2004

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* TORNADO WARNING FOR...
  BRYAN COUNTY IN SOUTHEAST GEORGIA...
  CHATHAM COUNTY IN SOUTHEAST GEORGIA...

* UNTIL 830 PM EDT

* AT 759 PM EDT...RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO 4 MILES SOUTHEAST OF FORT MCALLISTER...OR ABOUT
  11 MILES SOUTHEAST OF RICHMOND HILL...MOVING NORTH AT 30 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THE TORNADO INCLUDE...
  FORT MCALLISTER...
  MONTGOMERY AND BEAULIEU...
  WINDSOR FOREST AND WHITE BLUFF...
  THUNDERBOLT AND RIVERSIDE...
  SAVANNAH...

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 3183 8127 3178 8106 3207 8098 3211 8113

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 6:21 PM EDTTornado WarningCHSLiberty, Long24 min
Aug 12, 6:42 PM EDTTornado WarningCHSLiberty, Long, McIntosh33 min
Aug 12, 7:16 PM EDTTornado WarningCHSLiberty, McIntosh29 min
Aug 12, 7:29 PM EDTFlash Flood WarningCHSCandler, Liberty, Tattnall26 days
Aug 12, 7:35 PM EDTSevere Thunderstorm WarningCHSBryan, Chatham, Liberty25 min
Aug 12, 7:41 PM EDTFlash Flood WarningCHSBryan, Chatham94 min

Nearby

Tornado Warnings in Georgia, 2004Every tornado warning in 2004Tornadoes in 2004

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.