Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 103, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Jun 4, 1998, 11:46 PM EDT for Beaufort County, South Carolina. It was in force for 29 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
- Jun 4, 1998, 11:46 PM EDT (03:46 UTC)
- Expired
- Jun 5, 1998, 12:15 AM EDT
- In force
- 29 min
- Issued by
- NWS Charleston, SC
- Area
- Whole counties
County Beaufort County, SC
The radar
The Charleston,SC radar (KCLX), 47 km from the middle of the area, began a volume at 03:46 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 |
|---|---|---|---|
| Jun 4, 11:49 PM EDT | Hail 0.88 | Bluffton, SC | |
| Jun 5, 12:05 AM EDT | Hail 0.88 | Hilton Head Is, 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
Charleston AFB, SC (KCHS), launched 00:00Z, 3.8 hours before the alert went out and 89 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
- 1145 J/kg
- Mixed-layer CIN
- -91 J/kg
- Mixed-layer LCL
- 1340 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 4.4
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Charleston, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 4, 8:55 PM EDT, 2 hours 51 minutes earlier.
Area forecast discussion, Jun 4, 8:55 PM EDT, 2 hours 51 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHARLESTON SC 855 PM EDT THU JUN 4 1998 LATEST FCST UPDATE FOR SVR WW 508 IN GUD SHAPE THRU THE EXPIRATION OF MIDNITE. DON/T EXPECT TO NEED MAJOR CHANGES BEYOND MODIFICATION OF POPS AND PROBABLE REMOVAL OF WATCH LATE THIS EVE. IT LOOKS LIKE WE/LL NEED A HIGHER POP FRI AFTN TO FRI NITE AS THE NEXT SIGNIFICANT SHRT/WV ENERGY NEAR TX/OK AT 00Z COMES THIS WAY AND REGION FALLS UNDER BROAD RR JET QUAD. S CSTL SC MAY HAVE ITS BEST CHANCE FOR SVR WEATHER THIS SAME TIME FRAME ON FRI...POSSIBLY EXTENDING TO SAV/STATESBORO. ATL: CHANGE TO PARTLY CLOUDY SKY FOR SE GA WITH SOME DEBRIS ESP THRU MIDNITE. CONSIDER DROPPING AVG WINDS TO 10 MPH. ALL ELSE LOOKS OK. CWF/CSTL WATERS ALREADY UPDATED FOR NEW WATCH. LAVIS
The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 11:31 PM EDT | Severe Thunderstorm Warning | CHS | Jasper | 19 min |
| Jun 4, 10:22 PM EDT | Severe Thunderstorm Warning | CHS | Candler, Evans, Tattnall | 33 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 1998Every severe thunderstorm warning 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.