Alert archive / South Carolina / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 65, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Jul 21, 2002, 4:35 PM EDT for Berkeley 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
- Jul 21, 2002, 4:35 PM EDT (20:35 UTC)
- Expired
- Jul 21, 2002, 5:15 PM EDT
- In force
- 40 min
- Issued by
- NWS Charleston, SC
- Area
- Whole counties
County Berkeley County, SC
The radar
The Charleston,SC radar (KCLX), 118 km from the middle of the area, began a volume at 20:38 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 21, 4:50 PM EDT | Hail 0.75 | Bonneau, SC |
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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.6 hours before the alert went out and 320 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
- 566 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 952 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
062 WUUS52 KCHS 212035 SVRCHS SCC015-212115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHARLESTON SC 434 PM EDT SUN JUL 21 2002 THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL BERKELEY COUNTY IN SOUTHEAST SOUTH CAROLINA. * UNTIL 515 PM EDT. * AT 434 PM EDT...RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES SOUTHEAST OF SAINT STEPHEN...MOVING WEST AT 10 MPH. NICKEL SIZE HAIL AND 60 MPH WINDS ARE EXPECTED IN THE WARNED AREA. BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH. SEEK SHELTER IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS. $$ LAT...LON 3324 7962 3335 7974 3348 8010 3310 8003
The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 8:12 PM EDT | Severe Thunderstorm Warning | CHS | Beaufort | 48 min |
| Jul 20, 9:01 PM EDT | Severe Thunderstorm Warning | CHS | Beaufort, Jasper | 44 min |
| Jul 20, 9:26 PM EDT | Special Marine Warning | CHS | 64 min | |
| Jul 21, 3:44 PM EDT | Severe Thunderstorm Warning | CHS | Dorchester | 46 min |
| Jul 21, 5:17 PM EDT | Severe Thunderstorm Warning | CHS | Allendale | 28 min |
| Jul 21, 6:04 PM EDT | Severe Thunderstorm Warning | CHS | Hampton, Jasper | 41 min |
| Jul 21, 6:40 PM EDT | Severe Thunderstorm Warning | CHS | Colleton | 35 min |
| Jul 21, 6:55 PM EDT | Severe Thunderstorm Warning | CHS | Hampton | 35 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.