Alert archive / South Carolina / Tornado Watches in 2004
Tornado Watch 844
The Storm Prediction Center issued this tornado watch at Sep 27, 2004, 3:50 PM EDT for 19 counties in North Carolina; 23 counties in South Carolina. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 27, 2004, 3:50 PM EDT (19:50 UTC)
- Expired
- Sep 27, 2004, 10:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 42 counties
Bladen County, NC, Brunswick County, NC, Columbus County, NC, Cumberland County, NC, Duplin County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Moore County, NC, New Hanover County, NC, Onslow County, NC, Pender County, NC, Richmond County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Wake County, NC, Wayne County, NC, Bamberg County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Chesterfield County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Kershaw County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, Marlboro County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC, Williamsburg County, SC
The radar
The Columbia radar (KCAE), 118 km from the middle of the area, began a volume at 19:52 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
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 27, 4:29 PM EDT | Tornado Warning | CAE | Saluda | 31 min |
| Sep 27, 4:31 PM EDT | Tornado Warning | ILM | Marion | 59 min |
| Sep 27, 5:24 PM EDT | Tornado Warning | CAE | Lexington, Newberry | 36 min |
| Sep 27, 5:32 PM EDT | Tornado Warning | RAH | Moore | 43 min |
| Sep 27, 6:13 PM EDT | Tornado Warning | RAH | Moore | 17 min |
| Sep 27, 7:08 PM EDT | Tornado Warning | RAH | Wake | 37 min |
| Sep 27, 7:26 PM EDT | Severe Thunderstorm Warning | CAE | Lexington | 34 min |
| Sep 27, 7:35 PM EDT | Severe Thunderstorm Warning | CAE | Orangeburg | 25 min |
| Sep 27, 7:41 PM EDT | Tornado Warning | RAH | Montgomery, Richmond | 34 min |
| Sep 27, 8:13 PM EDT | Severe Thunderstorm Warning | CAE | Richland | 32 min |
| Sep 27, 9:00 PM EDT | Severe Thunderstorm Warning | CHS | Colleton | 60 min |
| Sep 27, 9:34 PM EDT | Severe Thunderstorm Warning | CHS | Dorchester | 56 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
Charleston AFB, SC (KCHS), launched 12:00Z, 7.8 hours before the alert went out and 137 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
- 1064 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 509 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 271950
SEL4
SPC WW 271950
NCZ000-SCZ000-CWZ000-280200-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 844
NWS STORM PREDICTION CENTER NORMAN OK
350 PM EDT MON SEP 27 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHEAST NORTH CAROLINA
CENTRAL AND EASTERN SOUTH CAROLINA
COASTAL WATERS
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 350 PM UNTIL 1000
PM EDT.
TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 70 STATUTE MILES EITHER SIDE
OF A LINE FROM 55 MILES SOUTH OF COLUMBIA SOUTH CAROLINA TO 25
MILES NORTH OF JACKSONVILLE NORTH CAROLINA.
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 843. WATCH NUMBER 843 WILL NOT BE IN EFFECT AFTER 350
PM EDT.
DISCUSSION...STRONG LOW LEVEL VERTICAL SHEAR PROFILES AND HIGH
THETA-E SURFACE CONDITIONS REMAIN FAVORABLE FOR ISOLATED TROPICAL
TORNADOES IN OUTER RAINBANDS OF JEANNE FOR SEVERAL MORE HOURS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 14035.
...HART
340,0814 360,0781 341,0765 321,0803SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 27, 3:24 PM EDT | Mesoscale Discussion | SPC | Anson, Bladen, Brunswick, Columbus, Cumberland, Duplin and 9 more | 96 min |
| Sep 27, 6:05 PM EDT | Mesoscale Discussion | SPC | Alexander, Avery, Buncombe, Burke, Caldwell, Catawba and 11 more | 115 min |
| Sep 27, 6:31 PM EDT | Mesoscale Discussion | SPC | Anson, Bladen, Columbus, Cumberland, Duplin, Harnett and 13 more | 119 min |
| Sep 26, 9:53 PM EDT | Mesoscale Discussion | SPC | Beaufort, Berkeley, Charleston, Colleton, Dorchester, Hampton and 1 more | 2 hr |
| Sep 27, 12:35 AM EDT | Tornado Watch | SPC | Allendale, Bamberg, Barnwell, Beaufort, Berkeley, Charleston and 4 more | 8 hr |
| Sep 27, 4:47 AM EDT | Mesoscale Discussion | SPC | Beaufort, Jasper | 118 min |
| Sep 27, 7:38 AM EDT | Mesoscale Discussion | SPC | Beaufort, Berkeley, Charleston, Colleton, Dorchester, Hampton and 1 more | 2 hr |
| Sep 27, 10:27 AM EDT | Mesoscale Discussion | SPC | Aiken, Allendale, Bamberg, Barnwell, Beaufort, Berkeley and 25 more | 2 hr |
| Sep 27, 10:40 AM EDT | Tornado Watch | SPC | Aiken, Allendale, Bamberg, Barnwell, Beaufort, Berkeley and 22 more | 6 hr |
Nearby
Tornado Watches in South Carolina, 2004Tornado Watches in North Carolina, 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.