Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 102, NWS Charleston, SC

June 4, 1998Jasper County, South Carolina

NWS Charleston, SC issued this severe thunderstorm warning at Jun 4, 1998, 11:31 PM EDT for Jasper County, South Carolina. It was in force for 19 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 4, 1998, 11:31 PM EDT (03:31 UTC)
Expired
Jun 4, 1998, 11:50 PM EDT
In force
19 min
Issued by
NWS Charleston, SC
Area
Whole counties

County Jasper County, SC

The radar

The Charleston,SC radar (KCLX), 26 km from the middle of the area, began a volume at 03:31 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.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 3.5 hours before the alert went out and 110 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.

Skew-T log-pSkew-T log-p diagram, Charleston AFB, SC at 00:00Z on 1998-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1145 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 00:00Z on 1998-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

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 36 minutes earlier.

Area forecast discussion, Jun 4, 8:55 PM EDT, 2 hours 36 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.

IssuedProductOfficeCountiesLasted
Jun 4, 11:46 PM EDTSevere Thunderstorm WarningCHSBeaufort29 min
Jun 4, 10:22 PM EDTSevere Thunderstorm WarningCHSCandler, Evans, Tattnall33 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.