Alert archive / South Carolina / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 87, NWS Greenville-Spartanburg, SC

June 12, 2004Cherokee County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 12, 2004, 4:42 PM EDT for Cherokee County, South Carolina. It was in force for 63 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 12, 2004, 4:42 PM EDT (20:42 UTC)
Expired: Jun 12, 2004, 5:45 PM EDT
In force: 63 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Counties, with a storm outline in the text

County Cherokee County, SC

The radar

The Greer radar (KGSP), 60 km from the middle of the area, began a volume at 20:45 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, 8.7 hours before the alert went out and 191 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: 19 J/kg
Mixed-layer CIN: -217 J/kg
Mixed-layer LCL: 685 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 49 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.

757 
WUUS52 KGSP 122042
SVRGSP
SCC021-122145-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
441 PM EDT SAT JUN 12 2004

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHEROKEE COUNTY IN UPSTATE SOUTH CAROLINA

* UNTIL 545 PM EDT

* AT 438 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS.  THESE STORMS WERE LOCATED ALONG A
  LINE EXTENDING FROM BLACKSBURG TO 13 MILES NORTHWEST OF GAFFNEY...
  AND MOVING SOUTHEAST AT 15 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  BLACKSBURG AROUND 455 PM EDT
  GAFFNEY AROUND 510 PM EDT
  THICKETTY AROUND 525 PM EDT

THESE STORMS HAVE A HISTORY OF PRODUCING WIND DAMAGE.

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

LAT...LON 3517 8140 3518 8185 3500 8178 3490 8167
          3490 8149

$$
MCAVOY

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 12, 3:00 PM EDT, 1 hour 42 minutes earlier.

Area forecast discussion, Jun 12, 3:00 PM EDT, 1 hour 42 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
300 PM EDT SAT JUN 12 2004

.SHORT TERM...

WILL KEEP DISCUSSION BRIEF AS SEVERE WEATHER IS OCCURRING. WEDGE
FRONT IS PUSHING THROUGH THE FA ATTM...ENCOUNTERING CAPES NEAR 3000
J/KG. STRONG STORMS SHOULD CONTINUE OVER THE SRN HALF OF THE FA
UNTIL CAD AIRMASS DOMINATES LATE THIS EVENING. ISENTROPIC LIFT AND
UPSLOPE FLOW SHOULD FUEL SH AND ISO TS OVERNIGHT AND INTO EARLY SUN.
TEMPS SHOULD ONLY REACH THE UPPER 70S AND LOWER 80S SUN...LIMITING
THE INSTABILITY. HOWEVER...BROAD S FLOW AND FLATTENING RIDGE WILL
ALLOW SCT TO LIKELY COVERAGE TO REMAIN THROUGH MUCH OF THE
DAY...ESPECIALLY OVER THE MTNS. WITH THE HIGH FURTHER SE OVER THE
ATLANTIC...DEEP GULF MOISTURE WILL BUILD OVER THE FA MON AND TUE.
MEDIUM RANGE MODELS ALL HAVE A TROPICAL FEATURE MOVE ACROSS THE DEEP
SOUTH EARLY IN THE WEEK...WILL CONTINUE CHC POPS AND MILD TEMPS.

.LONG TERM...

RIDGE REESTABLISHES ITSELF EARLY WED THEN SLOWLY MOVES E. ZONAL FLOW
FOLLOWS THROUGH WEEK AS BROAD UPPER TROF DROPS S OVER E CANADA. LOW
LEVELS REMAIN FAIRLY DRY THROUGH FRI IN NE FLOW BEHIND H85 LOW AS IT
MOVES OFFSHORE AND FILLS. BY FRI NIGHT MOISTURE IS EXPECTED TO
INCREASE OVER CWA AND SCT CONVECTION SHOULD DEVELOP FRI AFTN OVER
MTNS...THEN ISOLD CONVECTION SAT AFTN...VCNTY SFC BOUNDARY STRETCHED
ACROSS CWA.

&&

.PRELIMINARY POINT TEMPS/POPS...
GSP  70  79  68  84 /  50  50  30  50
AND  72  82  68  84 /  50  50  30  50
CLT  67  81  69  85 /  20  30  30  50
HKY  66  78  66  81 /  30  30  30  50
AVL  65  76  64  79 /  50  50  40  50
&&

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

NED/RAB

Hazardous weather outlook, Jun 12, 5:57 AM EDT, 10 hours 45 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
557 AM EDT SAT JUN 12 2004

GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014-
019-130956-
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-
557 AM EDT SAT JUN 12 2004

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

.DAY ONE...
A COLD FRONT MOVING INTO THE REGION TODAY WILL BE THE FOCUS FOR
SHOWERS AND THUNDERSTORMS THIS AFTERNOON. A FEW OF THE STORMS COULD
BE QUITE STRONG...ESPECIALLY IN UPSTATE SOUTH CAROLINA AND EXTREME
NORTHEAST GEORGIA...AND AN ISOLATED SEVERE STORM CANNOT BE RULED OUT.
STORMS THIS AFTERNOON SHOULD MOVE SLOWLY...ENHANCING HEAVY RAINFALL
POTENTIAL. SEE THE LATEST SEVERE WEATHER OUTLOOK...UNDER THE PRODUCT
HEADER CAESPSGSP...FOR MORE DETAILS.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED LATER TODAY IN UPSTATE SOUTH
CAROLINA AND EXTREME NORTHEAST GEORGIA.

44

In the hours before

Local storm report, Jun 12, 2:59 PM EDT, 1 hour 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
259 PM EDT SAT JUN 12 2004

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

0205 PM     TSTM WND DMG     WALHALLA                34.77N 83.06W
06/12/2004                   OCONEE             SC   COUNTY OFFICIAL

            COUNTY COMMS CENTER IS OPERATING FROM BASEMENT AS
            NUMEROUS TREES DOWN IN WALHALLA.

0238 PM     TSTM WND DMG     TOCCOA                  34.58N 83.32W
06/12/2004                   STEPHENS           GA   COUNTY OFFICIAL

            COUNTY COMMS CENTER REPORTS TWO TREES DOWN ON OLD CHURCH
            ROAD AND PENNY SIZED HAIL IN TOCCOA.

&&

DEO

Local storm report, Jun 12, 3:30 PM EDT, 1 hour 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
330 PM EDT SAT JUN 12 2004

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

0318 PM     HAIL             7 E RUTHERFORDTON       35.36N 81.84W
06/12/2004  1.00 INCH        RUTHERFORD         NC   COUNTY OFFICIAL

            ON BOSTIC-SUNSHINE ROAD.

0318 PM     TSTM WND DMG     7 E RUTHERFORDTON       35.36N 81.84W
06/12/2004                   RUTHERFORD         NC   COUNTY OFFICIAL

            TREES DOWN.

&&

JAT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 1:53 PM EDT	Severe Thunderstorm Warning	GSP	Oconee	52 min
Jun 12, 3:10 PM EDT	Severe Thunderstorm Warning	GSP	Pickens	65 min
Jun 12, 4:54 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	51 min
Jun 12, 6:35 PM EDT	Severe Thunderstorm Warning	GSP	Union	55 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.