Alert archive / Georgia / Tornado Watches in 2004
Tornado Watch 842
The Storm Prediction Center issued this tornado watch at Sep 27, 2004, 12:35 AM EDT for 8 counties in Florida; 42 counties in Georgia; 10 counties in South Carolina. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 27, 2004, 12:35 AM EDT (04:35 UTC)
- Expired
- Sep 27, 2004, 9:00 AM EDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
All 60 counties
Baker County, FL, Columbia County, FL, Duval County, FL, Hamilton County, FL, Madison County, FL, Nassau County, FL, Suwannee County, FL, Union County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Ben Hill County, GA, Berrien County, GA, Brantley County, GA, Bryan County, GA, Bulloch County, GA, Burke County, GA, Camden County, GA, Candler County, GA, Charlton County, GA, Chatham County, GA, Clinch County, GA, Coffee County, GA, Echols County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glascock County, GA, Glynn County, GA, Jeff Davis County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Lanier County, GA, Laurens County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, McIntosh County, GA, Montgomery County, GA, Pierce County, GA, Screven County, GA, Tattnall County, GA, Telfair County, GA, Toombs County, GA, Treutlen County, GA, Ware County, GA, Washington County, GA, Wayne County, GA, Wheeler County, GA, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Charleston County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Jasper County, SC
The radar
The Jacksonville radar (KJAX), 98 km from the middle of the area, began a volume at 04:38 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.
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 27, 12:48 AM EDT | Tornado Warning | JAX | Clinch | 27 min |
| Sep 27, 1:25 AM EDT | Tornado Warning | CHS | Bulloch | 50 min |
| Sep 27, 2:10 AM EDT | Tornado Warning | CHS | Bulloch | 35 min |
| Sep 27, 2:38 AM EDT | Tornado Warning | CHS | Screven | 37 min |
| Sep 27, 4:04 AM EDT | Tornado Warning | FFC | Montgomery, Wheeler | 26 min |
| Sep 27, 5:07 AM EDT | Tornado Warning | CHS | Allendale | 38 min |
| Sep 27, 5:18 AM EDT | Tornado Warning | CHS | Bryan | 27 min |
| Sep 27, 5:26 AM EDT | Tornado Warning | CHS | Bulloch | 49 min |
| Sep 27, 5:37 AM EDT | Tornado Warning | CHS | Hampton | 38 min |
| Sep 27, 6:32 AM EDT | Flash Flood Warning | CHS | Charleston | 6 hr |
| Sep 27, 6:46 AM EDT | Tornado Warning | CHS | Screven | 44 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Jacksonville, FL (KJAX), launched 00:00Z, 4.6 hours before the alert went out and 96 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.
- Mixed-layer CAPE
- 135 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 465 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 270439
SEL2
SPC WW 270435
FLZ000-GAZ000-SCZ000-CWZ000-271300-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 842
NWS STORM PREDICTION CENTER NORMAN OK
1235 AM EDT MON SEP 27 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHEAST FLORIDA
EASTERN GEORGIA
SOUTHERN SOUTH CAROLINA
COASTAL WATERS
EFFECTIVE THIS MONDAY MORNING FROM 1235 AM UNTIL 900 AM EDT.
TORNADOES...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS
LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 100 STATUTE MILES EAST AND
WEST OF A LINE FROM 70 MILES WEST NORTHWEST OF CHARLESTON SOUTH
CAROLINA TO 35 MILES SOUTH SOUTHWEST OF JACKSONVILLE FLORIDA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 841. WATCH NUMBER 841 WILL NOT BE IN EFFECT AFTER
1235 AM EDT. CONTINUE...WW 841...
DISCUSSION...T.S. JEANNE CONTINUES TO MOVE NWD FROM CURRENT LOCATION
VICINITY TAYLOR COUNTY FL INTO SRN GA OVERNIGHT. SHEAR REMAINS VERY
FAVORABLE ALONG AND TO RIGHT OF THE TRACK OF JEANNE FOR DEVELOPMENT
OF TROPICAL TORNADIC SUPERCELLS ASSOCIATED WITH THE CONVECTIVE
BANDS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME
TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI
WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION VECTOR 10045.
...HALES
331,0792 300,0801 300,0833 331,0825SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 27, 4:47 AM EDT | Mesoscale Discussion | SPC | Appling, Ben Hill, Bryan, Bulloch, Candler, Chatham and 15 more | 118 min |
| Sep 27, 7:38 AM EDT | Mesoscale Discussion | SPC | Bryan, Chatham, Effingham | 2 hr |
| Sep 27, 10:27 AM EDT | Mesoscale Discussion | SPC | Baldwin, Bryan, Bulloch, Burke, Camden, Candler and 28 more | 2 hr |
| Sep 27, 10:40 AM EDT | Tornado Watch | SPC | Bryan, Bulloch, Burke, Candler, Chatham, Effingham and 12 more | 6 hr |
| Sep 27, 6:05 PM EDT | Mesoscale Discussion | SPC | Banks, Franklin, Habersham, Hart, Madison, Rabun and 1 more | 115 min |
| Sep 26, 9:53 PM EDT | Mesoscale Discussion | SPC | Beaufort, Berkeley, Charleston, Colleton, Dorchester, Hampton and 1 more | 2 hr |
| Sep 27, 3:24 PM EDT | Mesoscale Discussion | SPC | Bamberg, Berkeley, Calhoun, Chesterfield, Clarendon, Colleton and 15 more | 96 min |
| Sep 27, 3:50 PM EDT | Tornado Watch | SPC | Bamberg, Berkeley, Calhoun, Charleston, Chesterfield, Clarendon and 17 more | 6 hr |
| Sep 27, 6:31 PM EDT | Mesoscale Discussion | SPC | Berkeley, Calhoun, Chester, Chesterfield, Clarendon, Darlington and 16 more | 119 min |
Nearby
Tornado Watches in Georgia, 2004Tornado Watches in South Carolina, 2004Tornado Watches in Florida, 2004Every tornado watch 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.