Alert archive / Georgia / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 117, NWS Charleston, SC

June 10, 1998Screven County, Georgia

NWS Charleston, SC issued this severe thunderstorm warning at Jun 10, 1998, 6:17 PM EDT for Screven County, Georgia. It was in force for 33 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: Jun 10, 1998, 6:17 PM EDT (22:17 UTC)
Expired: Jun 10, 1998, 6:50 PM EDT
In force: 33 min
Issued by: NWS Charleston, SC
Area: Whole counties

County Screven County, GA

The radar

The Charleston,SC radar (KCLX), 54 km from the middle of the area, began a volume at 22:18 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 10, 6:35 PM EDT	Thunderstorm Wind 52	Sylvania, GA	Trees and powerlines down.

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, 10.3 hours before the alert went out and 152 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 381 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 860 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 253 m²/s²
0-3 km storm-relative helicity: 267 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.8

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 10, 2:50 PM EDT, 3 hours 27 minutes earlier.

Area forecast discussion, Jun 10, 2:50 PM EDT, 3 hours 27 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
250 PM EDT WED JUN 10 1998

RUNNING A LTL LATE...SORRY.
ACTIVE AFTN FOR THE SE. BKN LINE CONT TO PUSH S ACRS CHS CWA...EXPCT TO
SEE ACTIVITY CONT THRU AT LST ERLY EVE AND POSS INTO LATE EVE FURTHER S
PORTION AS STORM CURVES SEWRD FROM SERN TENN. LATEST SAT IMAGES
INDICATES TRAJECTORY MAY BE A BIT MORE S...SO GA COUNTIES MAY HANG ON
LONGER TO ACTVTY TONIGHT. COVG SHOULD WARRANT CHC THRU THE EVE AND CAN
BE WORDED A DECREASING TREND MAINLY AFTR LATE EVE OR MIDNITE...AND
SEVERE AS WELL. 50 TO 60 POP COULD WORK. QUICK LUK AT MODELS SHOW RDG
CONTNG OVR THE ERN US WITH FOCUS OF MAIN SUPPORT FOR MCS TYPE DEVLPMNT
MOVING TO THE N. WE'RE DEFINITELY IN THE SUMMERTIME SOUP AGAIN WITH
VERY HIGH DWPTS IN STORE AND TEMPS EXPCTD IN TO AT LEAST LWR 90S
INLAND. WINDS A BIT TRICKY INITIALLY BUT SHOULD MAINTAIN A GENLY SWRLY
FLO ON BOTH ZONE AND CWF...CWF EXPCTD BLO SCA CRIT.

CHS ARPT  BB  74/92/75/93  5322
CHS CITY      78/89/78/89
SAV       BB  74/93/74/95  5222

S CST
...SVR TSTM WATCH TIL 8 PM...
.TONIGHT...MOSTLY CLOUDY EARLY WITH A 50 PERCNT CHC OF TSTMS...SOME
POSSIBLY SVR. PCPN DECREASING AFTER MIDNIGHT. LOWS MID 70S INLAND AND
UPR 80S CST. VARIABLE WIND 15 KT EARLY...BECMG SW 10 TO 15 MPH.
.THU...PARTLY CLOUDY WITH A 30 PCNT CHC OF SHOWERS/TSTMS. HIGH LWR 90S
INLAND...UPR 80S CST. SW WIND 10 TO 15 MPH.
.THU NIGHT...PARTLY CLOUDY. A 20 PERCENT CHC OF EVE TSTMS. LOWS MID TO
UPR 70S.
.FRI... PARTLY CLOUDY WITH A 20 PCNT CHC OF SHOWERS/TSTMS. HIGHS LWR
90S INLAND...UPR 80S CST.

MJR

The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 10, 12:39 PM EDT	Severe Thunderstorm Warning	CHS	Charleston	46 min
Jun 10, 2:06 PM EDT	Tornado Warning	CHS	Charleston	19 min
Jun 10, 2:25 PM EDT	Severe Thunderstorm Warning	CHS	Colleton	45 min
Jun 10, 2:35 PM EDT	Severe Thunderstorm Warning	CHS	Charleston	45 min
Jun 10, 3:31 PM EDT	Severe Thunderstorm Warning	CHS	Colleton	44 min
Jun 10, 3:56 PM EDT	Severe Thunderstorm Warning	CHS	Hampton	49 min
Jun 10, 4:18 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort	62 min
Jun 10, 4:29 PM EDT	Severe Thunderstorm Warning	CHS	Allendale	46 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1998 Every 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.