Alert archive / South Carolina / Tornado Warnings in 1998
Tornado Warning 27, NWS Charleston, SC
NWS Charleston, SC issued this tornado warning at Sep 3, 1998, 8:40 AM EDT for Colleton County, South Carolina. It was in force for 30 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Sep 3, 1998, 8:40 AM EDT (12:40 UTC)
- Expired
- Sep 3, 1998, 9:10 AM EDT
- In force
- 30 min
- Issued by
- NWS Charleston, SC
- Area
- Whole counties
County Colleton County, SC
The radar
The Charleston,SC radar (KCLX), 42 km from the middle of the area, began a volume at 12:39 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 |
|---|---|---|---|
| Sep 3, 8:45 AM EDT | Tornado F1 | Bennetts Pt, SC | Tornado damage was confined mostly to wooded marsh area which uprooted or snapped off trees. |
| Sep 3, 9:14 AM EDT | Thunderstorm Wind 55 | Central Portion, SC | Numerous trees and power lines down. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 0.7 hours before the alert went out and 61 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
- 182 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 528 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 288 m²/s²
- 0-3 km storm-relative helicity
- 433 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
990 WFUS1 KCHS 031239 RRA TORCHS SCC029-031310- BULLETIN...EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHARLESTON SC 840 AM EDT THU SEP 3 1998 THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A * TORNADO WARNING FOR... EASTERN COASTAL COLLETON COUNTY IN SOUTH CAROLINA * UNTIL 910 AM EDT * AT 840 AM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO OVER ST HELENA SOUND...MOVING NORTH AT 35 MPH. * THE TORNADO IS EXPECTED TO BE NEAR... BENNETTS ISLAND AND BEAR ISLAND NEAR THE END OF STATE ROUTE 26 AT 845 AM. IF YOU ARE IN THEPATH OF THIS STORM...GO TO A SMALL INTERIOR ROOM AWAY FROM WINDOWS. RVT/SLB
The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 3, 6:33 AM EDT | Severe Thunderstorm Warning | CHS | Jasper | 47 min |
| Sep 3, 6:33 AM EDT | Severe Thunderstorm Warning | CHS | Beaufort | 47 min |
| Sep 3, 8:16 AM EDT | Tornado Warning | CHS | Beaufort | 49 min |
| Sep 3, 10:28 AM EDT | Severe Thunderstorm Warning | CHS | Charleston | 47 min |
| Sep 3, 11:33 AM EDT | Severe Thunderstorm Warning | CHS | Jasper | 32 min |
| Sep 3, 12:04 PM EDT | Severe Thunderstorm Warning | CHS | Hampton | 36 min |
| Sep 3, 1:05 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley | 50 min |
| Sep 3, 1:09 PM EDT | Tornado Warning | CHS | Berkeley | 46 min |
| Sep 3, 1:21 PM EDT | Tornado Warning | CHS | Colleton | 49 min |
| Sep 3, 1:49 PM EDT | Tornado Warning | CHS | Dorchester | 46 min |
Nearby
Tornado Warnings in South Carolina, 1998Every tornado warning in 1998Tornadoes in 1998
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.