Alert archive / South Carolina / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 39, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at May 6, 1999, 2:24 PM EDT for Lee County, South Carolina. It was in force for 51 min. 1 report 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
- May 6, 1999, 2:24 PM EDT (18:24 UTC)
- Expired
- May 6, 1999, 3:15 PM EDT
- In force
- 51 min
- Issued by
- NWS Columbia, SC
- Area
- Whole counties
County Lee County, SC
The radar
The Columbia radar (KCAE), 83 km from the middle of the area, began a volume at 18:28 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 |
|---|---|---|---|
| May 6, 2:35 PM EDT | Hail 1 | Bishopville, SC | Sheriff reported quarter size hail. |
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, 6.4 hours before the alert went out and 142 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
- 479 J/kg
- Mixed-layer CIN
- -203 J/kg
- Mixed-layer LCL
- 961 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 199 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
999 WUUS1 KCAE 061823 RRA SVRCAE SCC061-061915- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE COLUMBIA SC 224 PM EDT THU MAY 6 1999 THE NATIONAL WEATHER SERVICE IN COLUMBIA SC HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... LEE COUNTY IN SOUTH CAROLINA * UNTIL 315 PM EDT * AT 224 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 12 MILES WEST OF MANVILLE. THE STORM WAS MOVING TOWARD THE EAST-NORTHEAST AT 40 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... MANVILLE AT 240 PM EDT LUCKNOW AT 243 PM EDT BISHOPVILLE AT 247 PM EDT LEE STATE PARK AT 251 PM EDT ASHLAND AT 256 PM EDT SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR. LCV/MC
The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 2:00 PM EDT | Severe Thunderstorm Warning | CAE | Edgefield, McCormick | 30 min |
| May 6, 2:06 PM EDT | Severe Thunderstorm Warning | CAE | Edgefield, McCormick | 39 min |
| May 6, 2:10 PM EDT | Severe Thunderstorm Warning | CAE | Richland | 35 min |
| May 6, 2:15 PM EDT | Severe Thunderstorm Warning | CAE | Saluda | 45 min |
| May 6, 2:19 PM EDT | Severe Thunderstorm Warning | CAE | Lancaster | 41 min |
| May 6, 2:37 PM EDT | Severe Thunderstorm Warning | CAE | Kershaw | 53 min |
| May 6, 2:44 PM EDT | Severe Thunderstorm Warning | CAE | Aiken | 46 min |
| May 6, 2:57 PM EDT | Severe Thunderstorm Warning | CAE | Lexington, Newberry | 48 min |
| May 6, 3:03 PM EDT | Severe Thunderstorm Warning | CAE | Fairfield | 42 min |
| May 6, 3:07 PM EDT | Severe Thunderstorm Warning | CAE | Richland | 68 min |
| May 6, 3:13 PM EDT | Severe Thunderstorm Warning | CAE | Lee | 47 min |
| May 6, 3:24 PM EDT | Severe Thunderstorm Warning | CAE | Calhoun, Orangeburg | 51 min |
| May 6, 3:28 PM EDT | Severe Thunderstorm Warning | CAE | Chesterfield | 32 min |
| May 6, 3:34 PM EDT | Severe Thunderstorm Warning | CAE | Kershaw | 41 min |
| May 6, 3:42 PM EDT | Severe Thunderstorm Warning | CAE | Sumter | 63 min |
| May 6, 3:57 PM EDT | Tornado Warning | CAE | Sumter | 48 min |
| May 6, 4:09 PM EDT | Severe Thunderstorm Warning | CAE | Lee | 51 min |
| May 6, 4:13 PM EDT | Tornado Warning | CAE | Kershaw, Lee | 47 min |
| May 6, 4:26 PM EDT | Severe Thunderstorm Warning | CAE | Clarendon | 49 min |
| May 6, 4:29 PM EDT | Severe Thunderstorm Warning | CAE | Chesterfield | 46 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 1999Every severe thunderstorm warning in 1999
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.