Alert archive / South Carolina / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 75, NWS Greenville-Spartanburg, SC

June 4, 2004Union County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 4, 2004, 7:00 PM EDT for Union County, South Carolina. It was in force for 60 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 4, 2004, 7:00 PM EDT (23:00 UTC)
Expired: Jun 4, 2004, 8:00 PM EDT
In force: 60 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Counties, with a storm outline in the text

County Union County, SC

The radar

The Greer radar (KGSP), 65 km from the middle of the area, began a volume at 23:04 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.

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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.0 hours before the alert went out and 228 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: 135 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 695 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 217 m²/s²
0-3 km storm-relative helicity: 310 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

738 
WUUS52 KGSP 042300
SVRGSP
SCC087-050000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
659 PM EDT FRI JUN 4 2004

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN UNION COUNTY IN UPSTATE SOUTH CAROLINA

* UNTIL 800 PM EDT

* AT 659 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM 11 MILES SOUTHWEST OF UNION...OR ABOUT 2 MILES SOUTH
  OF SEDALIA...MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CARLISLE AROUND 730 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 3469 8174 3457 8180 3453 8164 3446 8153
          3449 8143 3465 8143

$$

MOORE

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 4, 2:15 PM EDT, 4 hours 45 minutes earlier.

Area forecast discussion, Jun 4, 2:15 PM EDT, 4 hours 45 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
215 PM EDT FRI JUN 4 2004

.SHORT TERM...
UPPER LOW OVER FAR E KY MOVG INTO WV-VA AND TRACKING SLOWLY NE. WEAK
SFC FRONT LIES ACROSS PIEDMONT ALONG S BORDER CWA AND IS EXPECTED TO
MOVE ONLY VERY SLOWLY E. PLENTY OF MOISTURE LINGERING WITH EARLIER
CONVECTION AND CHANCE OF SCT SHWRS AND TSTMS CONT INTO THIS EVE WITH
STROGER STORMS E OF AREA. UPPER TROF MOVES E TONIGHT AND LOW LEVELS
DRY OUT FOR SAT. ON SUN HOWEVER ANOTHER SHORTWAVE IS EXPECTED TO
DROP SE AND BRUSH N CWA. MOISTURE IS A BIT SPARSE SUN THOUGH AND ETA
SOUNDINGS SHOW ATMOSPHERE TO BE CAPPED BY WARM AIR IN THE MID
LEVELS...COULD STILL SEE ISOLD AFTN-EVE CONVECTION MAINLY MTNS.
ANOTHER SHORTWAVE ALONG WITH INCREASING MOISTURE POINT TOWARD CHANCE
SHWRS AND TSTMS FOR MON AND HAVE RAISED POPS OVER MTNS SLIGHTLY.

.LONG TERM...
RIDGE WILL AFFECT MUCH OF THE ERN CONUS THROUGH THE EXTENDED PERIOD.
PER NCEP/S MANUAL PROGS AND THE 00 UTC GFS...SFC FRONT WL BE
STATIONARY SOMEWHERE ROUGHLY ALONG THE NC/SC BORDER TUE THROUGH
THU...WITH THE FRONT WASHING OUT BY LATE THU INTO FRI. ALOFT...A
WEAK SHORT WAVE WL BECOME ORPHANED SOMEWHERE OVER THE SRN MID
ATLANTIC STATES TUE AS HGHTS RISE QUICKLY TO ITS N. A PERSISTENT
AXIS OF HIGH LAYER RH VALUES AND RATHER COOL MID LEVEL TEMPERATURES
WILL EXIST S OF THIS FEATURE...RESULTING IN DIURNALLY DRIVEN POPS
BOTH DAYS. APPEARS THAT WE MAY DRY OUT A LITTLE THU. HOWEVER...PER
HPC/S PCPN NUMBERS AND TO AGREE WITH MOST OF THE NEIGHBORS...WL KEEP
CHANCE POPS IN THE ZONES. BY FRI SW FLOW BEGINS TO INCREASE WITH A
RESULTANT INCREASE IN GFS RH VALUES. THEREFORE...WL ONCE AGAIN CARRY
AN AFTN POP NEXT FRI. &&

.PRELIMINARY POINT TEMPS/POPS...
GSP  61  84  61  84 /  20  10  10  20
AND  61  85  61  86 /  20  10  10  20
CLT  60  84  61  84 /  30  10  10  20
HKY  59  81  58  83 /  30  10  10  20
AVL  55  78  54  79 /  30  10  10  20
&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...NONE.
SC...NONE.
&&

RB/BPM

Hazardous weather outlook, Jun 4, 6:07 AM EDT, 12 hours 53 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
607 AM EDT FRI JUN 4 2004

GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014-
019-051200-
ABBEVILLE SC-ALEXANDER NC-ANDERSON SC-AVERY NC-BUNCOMBE NC-BURKE NC-
CABARRUS NC-CALDWELL NC-CATAWBA NC-CHEROKEE SC-CHESTER SC-
CLEVELAND NC-DAVIE NC-ELBERT GA-FRANKLIN GA-GASTON NC-GRAHAM NC-
GREATER GREENVILLE SC-GREATER OCONEE SC-GREATER PICKENS SC-
GREENVILLE MOUNTAINS SC-GREENWOOD SC-HABERSHAM GA-HART GA-HAYWOOD NC-
HENDERSON NC-IREDELL NC-LAURENS SC-LINCOLN NC-MACON NC-MADISON NC-
MCDOWELL NC-MECKLENBURG NC-MITCHELL NC-NORTHERN JACKSON NC-
OCONEE MOUNTAINS SC-PICKENS MOUNTAINS SC-POLK NC-RABUN GA-ROWAN NC-
RUTHERFORD NC-SOUTHERN JACKSON NC-SPARTANBURG SC-STEPHENS GA-
SWAIN NC-TRANSYLVANIA NC-UNION SC-UNION NC-YANCEY NC-YORK SC-
607 AM EDT FRI JUN 4 2004

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

.DAY ONE...
WIDESPREAD SHOWERS AND THUNDERSTORMS WILL MOVE NORTH ACROSS THE AREA
THIS MORNING. SOME OF THE THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL.
A FLOOD WATCH HAS BEEN POSTED FOR A PORTION OF THE MOUNTAINS AND
FOOTHILLS OF NORTH CAROLINA. PLEASE SEE CAEFFAGSP FOR ADDITIONAL
DETAILS.

THE THUNDERSTORMS WILL DECREASE IN COVERAGE THIS AFTERNOON. HOWEVER
THE ATMOSPHERE WILL BE MUCH MORE UNSTABLE AT THAT TIME. SEVERE
THUNDERSTORMS ARE POSSIBLE ACROSS PORTIONS OF THE NORTH CAROLINA
PIEDMONT AND SOUTH CAROLINA UPSTATE THIS AFTERNOON. PLEASE SEE
CAESPSGSP FOR ADDITIONAL DETAILS.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

RWH

In the hours before

Local storm report, Jun 4, 5:05 PM EDT, 1 hour 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
505 PM EDT FRI JUN 04 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0447 PM     HAIL             7 NW PIEDMONT           34.78N 82.55W
06/04/2004  0.75 INCH        ANDERSON           SC   TRAINED SPOTTER

0458 PM     HAIL             POWDERSVILLE            34.79N 82.49W
06/04/2004  0.25 INCH        ANDERSON           SC   AMATEUR RADIO

            AT POWDERSVILLE FIRE DEPT

&&

JONES

Local storm report, Jun 4, 5:31 PM EDT, 1 hour 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
531 PM EDT FRI JUN 04 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0527 PM     HAIL             5 S GREENVILLE          34.77N 82.37W
06/04/2004  1.00 INCH        GREENVILLE         SC   AIRPLANE PILOT

            HAIL AS LARGE AS QUARTERS REPORTED BY A GROUNDED PILOT AT
            DONALDSON CENTER.

&&

BURRUS

Local storm report, Jun 4, 5:51 PM EDT, 1 hour 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
551 PM EDT FRI JUN 04 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0530 PM     HAIL             10 WSW SIMPSONVILLE     34.68N 82.42W
06/04/2004  0.75 INCH        GREENVILLE         SC   TRAINED SPOTTER

            ALSO HIGH WINDS

0540 PM     HAIL             1 W SIMPSONVILLE        34.73N 82.28W
06/04/2004  0.75 INCH        GREENVILLE         SC   AMATEUR RADIO

0545 PM     HAIL             2 SW SIMPSONVILLE       34.71N 82.28W
06/04/2004  1.00 INCH        GREENVILLE         SC   TRAINED SPOTTER

&&

JONES

Local storm report, Jun 4, 6:31 PM EDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
631 PM EDT FRI JUN 04 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0600 PM     HAIL             GRAY COURT              34.61N 82.11W
06/04/2004  0.75 INCH        LAURENS            SC   COUNTY OFFICIAL

            PUBLIC REPORT THROUGH 911

0500 PM     TSTM WND DMG     1 W PIEDMONT            34.71N 82.48W
06/04/2004                   ANDERSON           SC   PUBLIC

            CAR REPORTED BLOWN OFF ROAD

&&

JONES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 4:43 PM EDT	Severe Thunderstorm Warning	GSP	Anderson	62 min
Jun 4, 5:10 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	65 min
Jun 4, 5:47 PM EDT	Severe Thunderstorm Warning	GSP	Laurens	88 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2004 Every severe thunderstorm warning in 2004

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.