Alert archive / South Carolina / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 112, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at Nov 11, 2002, 7:20 AM EST for Fairfield County, South Carolina. It was in force for 40 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
- Nov 11, 2002, 7:20 AM EST (12:20 UTC)
- Expired
- Nov 11, 2002, 8:00 AM EST
- In force
- 40 min
- Issued by
- NWS Columbia, SC
- Area
- Whole counties
County Fairfield County, SC
The radar
The Columbia radar (KCAE), 50 km from the middle of the area, began a volume at 12:20 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 |
|---|---|---|---|
| Nov 11, 7:30 AM EST | Thunderstorm Wind 60 E | Winnsboro, SC | Sheriff reported many trees down on the west end of the county. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Nov 11, 3:30 AM EST | Tornado Watch | SPC | 6 hr |
| Nov 11, 5:40 AM EST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 0.3 hours before the alert went out and 196 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
- 1057 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 720 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS52 KCAE 111220
SVRCAE
SCC039-111300-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
720 AM EST MON NOV 11 2002
THE NATIONAL WEATHER SERVICE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN FAIRFIELD COUNTY IN CENTRAL SOUTH CAROLINA
* UNTIL 800 AM EST.
* AT 718 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 17 MILES WEST OF WINNSBORO..MOVING EAST AT 45
MPH.
* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
WINNSBORO.
A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. REMEMBER...SEVERE
THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCED
WARNING.
THIS STORM WILL PRODUCE DAMAGING WINDS IN EXCESS OF 55 MPH.
JB/CDLThe office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 11, 5:27 AM EST | Tornado Warning | CAE | McCormick | 33 min |
| Nov 11, 6:11 AM EST | Tornado Warning | CAE | McCormick | 49 min |
| Nov 11, 6:36 AM EST | Tornado Warning | CAE | Newberry | 54 min |
| Nov 11, 7:05 AM EST | Severe Thunderstorm Warning | CAE | Edgefield | 55 min |
| Nov 11, 7:07 AM EST | Severe Thunderstorm Warning | CAE | Lancaster | 38 min |
| Nov 11, 7:12 AM EST | Tornado Warning | CAE | Saluda | 48 min |
| Nov 11, 7:26 AM EST | Tornado Warning | CAE | Newberry | 64 min |
| Nov 11, 7:26 AM EST | Tornado Warning | CAE | Newberry | 64 min |
| Nov 11, 7:37 AM EST | Severe Thunderstorm Warning | CAE | Lexington | 53 min |
| Nov 11, 7:50 AM EST | Severe Thunderstorm Warning | CAE | Richland | 55 min |
| Nov 11, 7:59 AM EST | Severe Thunderstorm Warning | CAE | Lancaster | 46 min |
| Nov 11, 8:03 AM EST | Severe Thunderstorm Warning | CAE | Fairfield | 27 min |
| Nov 11, 8:07 AM EST | Severe Thunderstorm Warning | CAE | Fairfield | 23 min |
| Nov 11, 8:14 AM EST | Severe Thunderstorm Warning | CAE | Kershaw | 46 min |
| Nov 11, 8:26 AM EST | Severe Thunderstorm Warning | CAE | Chesterfield | 64 min |
| Nov 11, 8:49 AM EST | Severe Thunderstorm Warning | CAE | Sumter | 56 min |
| Nov 11, 8:53 AM EST | Severe Thunderstorm Warning | CAE | Lee | 52 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2002Every severe thunderstorm warning in 2002
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.