Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 252, NWS Greenville-Spartanburg, SC

June 29, 1998York County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 29, 1998, 6:59 PM EDT for York County, South Carolina. It was in force for 31 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 29, 1998, 6:59 PM EDT (22:59 UTC)
Expired
Jun 29, 1998, 7:30 PM EDT
In force
31 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Whole counties

County York County, SC

The radar

The Greer radar (KGSP), 95 km from the middle of the area, began a volume at 23:01 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.0 hours before the alert went out and 169 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, Greensboro/Hi Pt, NC at 12:00Z on 1998-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 271 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, Greensboro/Hi Pt, NC at 12:00Z on 1998-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 square meters per square second.1939Sfc1 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
271 J/kg
Mixed-layer CIN
-215 J/kg
Mixed-layer LCL
1267 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
106 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

792 
WUUS1 KGSP 292300 RRA
SVRGSP
SCC091-292330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
659 PM EDT MON JUN 29 1998

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  YORK COUNTY IN SOUTH CAROLINA

* UNTIL 730 PM EDT

* AT 700 PM...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM 10 MILES WEST OF YORK...MOVING EAST AT 25 MPH

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HICKORY GROVE AT 705 PM
  YORK AT 720 PM

SEVERE THUNDERSTORM WINDS CAN REACH SPEEDS OF 60 TO OVER 100 MPH.
THESE WINDS BLOW DOWN TREES...POWER LINES...AND SEVERELY DAMAGE
MOBILE HOMES AND SOMETIMES BUILDINGS. VERY LARGE OR WIND-DRIVEN HAIL
CAN INJURE ANYONE CAUGHT OUTSIDE.

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 Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 29, 2:17 PM EDT, 4 hours 42 minutes earlier.

Area forecast discussion, Jun 29, 2:17 PM EDT, 4 hours 42 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE/SPARTANBURG, SC
217 PM EDT MON JUN 29 1998

RAH: WILL NEED TO WATCH OUT FOR POSBL MCS DEVELOPMENT UPSTREAM
     TNT...THEN CHC POPS TUE...TUE NGT AND WED. SLOW FALL IN
     TEMPS NEXT FEW DAYS. MAY NOT NEED HEAT ADVISORY TUE
CAE/FFC: ISOLD TRW WORDING FOR TUE...SMALL POP TUE NGT AND WED
         TEMPS A DEGREE OR TWO COOLER TMRW...LOWER TO MID 90S
         FOR WED. MAY BE ABLE TO DROP HEAT ADVISORY

THUNDERSTORMS GOING NOW IN WRN NC. GIST OF FCST RESTS WITH
PERSISTENT TROF ALONG ERN SECTIONS CAROLINAS...OUTFLOWS FROM
PREVIOUS CONVECTION...AND POSBL MCS LATE TNT THAT SHUD MV PARALLEL
TO NERLY E-W ORIENTED FRONT DROPPONG SOUTH INTO MIDWEST. LUKS AS
IF NC PORTION CWA...ESPECIALLY MTNS AND NRN TIER COUNTIES OF
FOOTHILLS/PIEDMONT...STAND BEST CHC OF CONVECTION THROUGH TMRW
MORNING. AS IN PREVIOUS RUNS...MDLS PROG 70H TEMPS TO WARM OVER
10C SC/GA PORTIONS...WHILE BETTER GRADIENT OVR NC.

TNT...HEIGHTS ALF DROP A BIT AS RGN OF HIER WINDS BEGINS PUSHING
SWRD...WITH FRONT EXPECTED TO BE IN VCNTY CWA BY TUE AFTN. ETA
BRINGS RATHER POTENT S/W TO GRAZE NRN CWA TMRW AFTN...HINTS OF SOME
JET INTERACTIONS TOO FOR EVENG. TIME SECTIONS FOR NW PIEDMONT NC SHW
TWO PRONOUNCED PERIODS OF OMEGA...ONE AT 30 HRS..ONE AT 42 AS FRONT
MAKES FINAL PUSH SWRD. ALMOST NEGLIGBLE OMEGA FOR SRN SECTIONS
THROUGH 48 HRS WE SHOULD SEE MORE WIDESPREAD ACTIVITY TWRDS END OF
THIS FCST PD WITH COOLING HEIGHTS ALF AND SFC BNDRY CREATING NATURAL
CNVRGNC MECHANISM.

WITH ADDITIONAL CLOUDS AND BIT MORE UNSETTLED WEATHER NEXT FEW
DAYS...TEMPS IN NC SHUD BEGIN A SLOW...DOWNWARD PROGRESSION. TEMPS
SC/GA DOWN GRADUALLY THROUGH PD. DONT FORGET THAT WITH ASOS
COMMISSIONING TUE NGT...OVRNGT LOWS IN CLT AREA WILL BECOME
MORE REPRESENTATIVE OF SURROUNDING AREAS AND CCF NUMBERS REFLECT
SUCH FOR WED LOW AND HIGH.

AVL  65/87/66/83  3/4/4/3
CLT  75/93/69/90  3/4/4/3
GSP  73/95/71/92  1/2/3/3

BURRUS

In the hours before

Local storm report, Jun 29, 6:35 PM EDT, 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
635 PM EDT MON JUN 29 1998

TIME (EDT) .....CITY LOCATION....... ST   ...EVENT/REMARKS...
           .....COUNTY LOCATION.....

445 PM     5 E SHELBY                NC   WIND DAMAGE
06/29/98   CLEVELAND                      911 CENTER REPORTED TREES
                                          DOWN IN OAK
                                          GROVE...BETHLEHEM AND
&                                          KINGS MOUNTAIN AREAS.

RBN
Local storm report, Jun 29, 6:35 PM EDT, 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
635 PM EDT MON JUN 29 1998

TIME (EDT) .....CITY LOCATION....... ST   ...EVENT/REMARKS...
           .....COUNTY LOCATION.....

445 PM     5 E SHELBY                NC   WIND DAMAGE
06/29/98   CLEVELAND                      911 CENTER REPORTED TREES
                                          DOWN IN OAK
                                          GROVE...BETHLEHEM AND
&                                          KINGS MOUNTAIN AREAS.

RBN
Local storm report, Jun 29, 6:57 PM EDT, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
657 PM EDT MON JUN 29 1998

TIME (EDT) .....CITY LOCATION....... ST   ...EVENT/REMARKS...
           .....COUNTY LOCATION.....

640 PM     CHARLOTTE                 NC   WIND DAMAGE
06/29/98   MECKLENBURG                    AMATEUR RADIO OPERATORS
                                          REPORTED 1 FOOT DIAMETER
                                          TREES DOWN IN SOUTHEAST
                                          CHARLOTTE ALONG SHAMROCK
                                          ROAD NEAR EASTWAY.

NEAL

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 29, 5:35 PM EDTSevere Thunderstorm WarningGSPSpartanburg30 min
Jun 29, 7:56 PM EDTSevere Thunderstorm WarningGSPChester19 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.