Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 94, NWS Wilmington, NC

June 4, 1998Williamsburg County, South Carolina

NWS Wilmington, NC issued this severe thunderstorm warning at Jun 4, 1998, 4:53 PM EDT for Williamsburg County, South Carolina. It was in force for 32 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 4, 1998, 4:53 PM EDT (20:53 UTC)
Expired: Jun 4, 1998, 5:25 PM EDT
In force: 32 min
Issued by: NWS Wilmington, NC
Area: Whole counties

County Williamsburg County, SC

What was reported inside it

Time	Report	Where	Remark
Jun 4, 5:00 PM EDT	Thunderstorm Wind 65	Trio, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 4, 1:45 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.9 hours before the alert went out and 84 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: 1522 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 1198 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KILM 042053 RRA
SVRILM
SCC089-042125-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON NC
453 PM EDT THU JUN 4 1998

THE NATIONAL WEATHER SERVICE IN WILMINGTON NC HAS ISSUED A...

* SEVERE THUNDERSTORM WARNING FOR...
  WILLIAMSBURG COUNTY IN NORTHEASTERN SOUTH CAROLINA

* UNTIL 525 PM EDT

* AT 451 PM EDT... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  WITH DAMAGING WINDS AND LARGE HAIL 27 MILES WEST OF GEORGETOWN OR
  7 MILES NORTHWEST OF EARLES MOVING EAST AT 35 MPH.

* THIS STORM WILL BE IN THE VICINITY OF...
        NEW MORRISVILLE         BY 455 PM EDT
        WARSAW                  BY 455 PM EDT
        RHEMS                   BY 500 PM EDT


A TORNADO WATCH IS ALSO IN EFFECT.  SEVERE THUNDERSTORMS CAN
PRODUCE TORNADOES.

DAMAGING WIND...LARGE HAIL...HEAVY RAIN...AND DEADLY LIGHTNING
ARE EXPECTED. SEEK SHELTER IN A STRONG BUILDING AWAY FROM WINDOWS.
DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES UNTIL THE STORM HAS
PASSED...EXCEPT IN AN EMERGENCY. MOTORISTS SHOULD AVOID FLOODED
ROADWAYS.

SQI/SI

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 Wilmington, NC wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 4, 3:05 PM EDT, 1 hour 48 minutes earlier.

Area forecast discussion, Jun 4, 3:05 PM EDT, 1 hour 48 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
305 PM EDT THU JUN 4 1998

RDU:  40-50 POPS THROUGH FRI NIGHT.  THINK SAT WILL BE DRY.  FAN
TEMPS LOOK ON TARGET.

CWF: WILL BUY INTO MODEL SOLN OF BRINGING FRONT INTO CNTRL SECTIONS
(VCNTY HAT) AS ALL 3 MODELS INDICTATE SEVERAL WAVES FORMING ALONG
THE BNDRY WHICH WOULD TEND TO CAUSE IT TO MEANDER N AND S.  WILL TURN
WINDS SRN WATERS TO SW WITH SPEEDS CONSISTENT WITH ILM AND KEEP
WINDS UP N MORE IN AN ESTRLY DIR.  FRONT SHOULD MOVE S OF THE REGION
ERLY SAT AND SHIFT WINDS TO NE ENTIRE REGION.  60 HR AVN AND MRP
GUID SAYS SCA CONDITIONS LATE FRI INTO SAT...BUT I PREFER A MORE
CAUTIOUS APPROACH LIKE RDU AND WILL KEEP OUT UNTIL MODELS RUN WITH
MORE DATA.

DISC: MORE OF THE SAME ON TAP AS FAST ZONAL FLOW...STNRY FRONT TO
THE S AND ABUNDANT MOISTURE CONTINUE THE THREAT FOR SHOWERS AND
TSTMS ACROSS THE REGION INTO FRI NIGHT.  CONFIDENCE IN MODELS LOW
CONSIDERING LACK OF DATA INGEST THIS AM AND THE FACT THAT THEY HAVE
NOT HANDLED THE TIMING OF THIS COMPLICATED WX PATTERN WELL.
SUBSIDENCE IN WAKE OF DEPARTED VORT HAS ALLOWED SKIES TO CLR AND
ATMOS TO DESTABILIZE JUST IN TIME FOR CONVECTION RACING OUT OF TN TO
ARRIVE LTR THIS EVENING.  PERIODS OF TSTMS AND SHOWERS WILL CONTINUE
FRI AND FRI NIGHT AS WAVE OF LOW PRES TRAVELS ALONG THE FRONT. THERE
WILL BE PLENTY OF DRY WX AS WELL SO PREFER HIGH CHC POPS.  NOT TOO
KEEN ON PCPN FOR FRI BUT CAN NEVER RULE OUT TfHIS TIME OF YR SO 20
POP FINE WITH ME.

LOOKS LIKE FWC TEMPS HAVE A BETTER HANDLE THAN FWC.

.MHX...NONE.

ELARDO

The office that day

Everything else NWS Wilmington, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 4, 5:56 PM EDT	Severe Thunderstorm Warning	ILM	Horry	34 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 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.