Alert archive / South Carolina / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 160, NWS Greenville-Spartanburg, SC

June 11, 2003Anderson County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 11, 2003, 5:45 PM EDT for Anderson County, South Carolina. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 11, 2003, 5:45 PM EDT (21:45 UTC)
Expired: Jun 11, 2003, 6:15 PM EDT
In force: 30 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Counties, with a storm outline in the text

County Anderson County, SC

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.8 hours before the alert went out and 226 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: 1027 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 802 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: -34 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KGSP 112145
SVRGSP
SCC007-112215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
545 PM EDT WED JUN 11 2003

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN ANDERSON COUNTY IN UPSTATE SOUTH CAROLINA

* UNTIL 615 PM EDT

* AT 545 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM 9 MILES EAST OF ANDERSON...OR ABOUT OVER BELTON...
  MOVING NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  PELZER AT 555 PM EDT.

PEOPLE IN THE PATH OF THIS SEVERE THUNDERSTORM SHOULD BE ALERT FOR
LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY
RAIN CAN OCCUR WITH ANY THUNDERSTORM.

LAT...LON 3454 8261 3465 8247 3455 8242 3450 8235
          3442 8247

$$
HG

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 11, 2:59 PM EDT, 2 hours 46 minutes earlier.

Area forecast discussion, Jun 11, 2:59 PM EDT, 2 hours 46 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
259 PM EDT WED JUN 11 2003

LAPS ANALYSIS OF CAPE SHOWS A LARGE AREA OF 4000 J/KG OR GREATER
CAPE OVER NE GA AND THE UPSTATE. STORMS ARE RATHER SLOW...WITH
ISOLATED HEAVY RAIN A GIVEN. A FEW SEVERE STORMS STILL EXPECTED
CONSIDERING THE AMOUNT OF ENERGY TO WORK WITH. UPSTREAM...MCS HAVE
DEVELOPED OVER MS AN AL...THICKNESSES WOULD LEAD STORMS TO THE FA
TONIGHT IF THEY HOLD TOGETHER. I BELIEVE THAT SOME ACTIVITY WILL
CONTINUE AS MID-LEVEL LOW MOVES NORTHEAST AND THE RIDGE BREAKS DOWN
WHILE THE ATMOSPHERE REMAINS UNSTABLE. WILL ADVERTISE HIGH CHC OVER
THE MTNS AND SOLID CHC ELSEWHERE...MAY MAKE LAST SECOND DECISION.
THURSDAY...LOW MOVES OVER NEW ENGLAND WITH FA STILL IN UNSTABLE
TROPICAL AIR MASS. WITH THE RIDGE WEAKENING AND FA STILL IN THE PATH
OF POTENTIAL MCS WILL INCREASE POPS TO HIGH CHC EVERYWHERE AND WILL
DECREASE SOMEWHAT OVERNIGHT. VERY LITTLE CHANGE FOR FRIDAY AND WILL
CONTINUE HIGH CHC POPS.

EXTENDED MDLS IN FLUX WITH FCST POSITION OF SFC FNT STARTING OUT TO
OUR NORTH. PREV CONSENSUS WAS FNT TO REMAIN TO OUR NORTH UNTIL VERY
LATE IN THE PERIOD. NOW THERE ARE INDICATIONS THE FNT MAY SLIP DOWN
AS EARLY AS SUN NITE. HOWEVER MDLS DO SHOW CONSENSUS WITH LOW LEVEL
MOISTURE REMAINING HIGH WITH SOME CONVERGENCE H85. SO EVEN IF FNT
MOVES SOUTH EXPECT PRECIP CHC TO CONTINUE. BUT GIVEN MDL UNCERTAINTY
FNT COULD BE STALLED OVER US OR EVEN TO OUR NORTH. THEREFORE WILL
CONTINUE POP THRU DAY 7 WITH TEMPS CLOSE TO GUIDANCE.

FCSTID = 16
GSP 069 085 068 086 / 4555
AND 070 086 068 086 / 4555
CLT 069 086 070 086 / 4545
HKY 068 084 067 083 / 4555
AVL 064 080 064 080 / 4555

NED/RWH

Hazardous weather outlook, Jun 11, 6:24 AM EDT, 11 hours 21 minutes before

GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014-
019-111215-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
624 AM EDT WED JUN 11 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA...
UPSTATE SOUTH CAROLINA...AND EXTREME NORTHEAST GEORGIA.

.DAY ONE...TODAY

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND
EVENING. A FEW OF THE STORMS COULD BECOME SEVERE. PLEASE SEE
CAESPSGSP FOR FURTHER INFORMATION.

.DAYS TWO THROUGH SEVEN...

A COMPLEX OF SHOWERS AND THUNDERSTORMS MAY AFFECT WESTERN PORTIONS
OF THE AREA THURSDAY MORNING. DAMAGING STRAIGHT LINE WINDS WILL BE
POSSIBLE. OTHERWISE...SCATTERED...MAINLY AFTERNOON AND EVENING
SHOWERS AND THUNDERSTORMS ARE EXPECTED ACROSS THE AREA FOR THE NEXT
7 DAYS. ISOLATED SEVERE STORMS WILL BE POSSIBLE MOST DAYS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING.

LANE

In the hours before

Local storm report, Jun 11, 4:36 PM EDT, 1 hour 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
436 PM EDT WED JUN 11 2003

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

200 PM     TOCCOA                    GA   WIND DAMAGE
06/11/03   STEPHENS                       TREES DOWN ON BRECKRIDGE
                                          AND FALLS ROAD AND ALSO
                                          NORTH POND ROAD NEAR
                                          ELEMENTARY SCHOOL IN
                                          TOCCOA.

TJB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 4:18 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	42 min
Jun 11, 6:22 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	38 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2003 Every severe thunderstorm warning in 2003

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.