Alert archive / South Carolina / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 10, NWS Greenville-Spartanburg, SC

March 6, 2003Anderson County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Mar 6, 2003, 2:19 AM EST for Anderson County, South Carolina. It was in force for 41 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: Mar 6, 2003, 2:19 AM EST (07:19 UTC)
Expired: Mar 6, 2003, 3:00 AM EST
In force: 41 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Counties, with a storm outline in the text

County Anderson County, SC

The radar

The Greer radar (KGSP), 65 km from the middle of the area, began a volume at 07:20 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 7.3 hours before the alert went out and 205 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: 68 J/kg
Mixed-layer CIN: -166 J/kg
Mixed-layer LCL: 717 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 151 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

980 
WUUS52 KGSP 060719
SVRGSP
SCC007-060800-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
218 AM EST THU MAR 6 2003

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

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

* UNTIL 300 AM EST

* AT 218 AM EST...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
  SEVERE THUNDERSTORMS FROM 13 MILES NORTHWEST OF HARTWELL TO 10
  MILES SOUTHEAST OF CARNESVILLE...MOVING EAST AT 60 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  SANDY SPRINGS AT 230 AM EST.
  ANDERSON AT 235 AM EST.
  WILLIAMSTON AT 240 AM EST.
  HONEA PATH AT 245 AM EST.

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 3449 8298 3460 8283 3474 8247 3462 8246
          3455 8242 3449 8234 3425 8269 3422 8275
          3428 8276 3436 8283 3444 8285 3448 8289

$$

PM/NED

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 Mar 5, 11:37 PM EST, 2 hours 42 minutes earlier.

Area forecast discussion, Mar 5, 11:37 PM EST, 2 hours 42 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1137 PM EST WED MAR 5 2003

UPDATE FORTHCOMING TO INCLUDE COUNTIES FOR SEVERE THUNDERSTORM WATCH
#30.

FCSTID =   44
GSP   54  68  41  62 / 100  50  10  10
AND   54  69  43  64 / 100  50  10  10
CLT   53  68  41  60 / 100  60  10  10
HKY   51  65  37  59 / 100  60  10  10
AVL   51  61  34  58 / 100  60  10  10

.GSP...
GA...NONE.
NC...NONE.
SC...NONE.

BURRUS

Hazardous weather outlook, Mar 5, 6:06 AM EST, 20 hours 13 minutes before

GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014-
019-051300-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
606 AM EST WED MAR 5 2003

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

.DAY ONE...TODAY
SHOWERS AND THUNDERSTORMS ARE EXPECTED TO MOVE INTO THE REGION
TONIGHT. SOME OF THE STORMS COULD BECOME QUITE STRONG...ESPECIALLY
ALONG AND SOUTH OF INTERSTATE 85. SEE THE MOST RECENT SPECIAL
WEATHER STATEMENT (PRODUCT CAESPSGSP) FOR MORE DETAILS.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION COULD BE NEEDED LATE WEDNESDAY NIGHT OR EARLY
THURSDAY MORNING IN UPSTATE SOUTH CAROLINA AND NORTHEAST GEORGIA.

BURRUS

In the hours before

Special weather statement, Mar 6, 1:27 AM EST, 52 minutes before

GAZ010-017-018-026-028-029-SCZ001-002-004-005-010-011-019-060930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
127 AM EST THU MAR 6 2003

...A LINE OF STRONG THUNDERSTORMS TO AFFECT NORTHEAST GEORGIA AND
THE WESTERN UPSTATE OF SOUTH CAROLINA THROUGH 4 AM...

AT 127 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
OF THUNDERSTORMS RACING EAST AT 60 MPH ACROSS NORTH GEORGIA. THE
LINE WILL AFFECT THE AREA FROM CLAYTON TO CARNESVILLE AROUND 2 AM...
AND THEN REACH FROM PICKENS TO ANDERSON TO ABBEVILLE BY 3 AM. GUSTY
WINDS TO 40 MPH...MARBLE SIZE HAIL...TORRENTIAL DOWNPOURS AND 1/2 TO
1 INCH OF RAIN...AND FREQUENT LIGHTNING WILL ACCOMPANY THIS LINE.

THE NATIONAL WEATHER SERVICE WILL CLOSELY MONITOR THE PROGRESS OF
THIS LINE OF THUNDERSTORMS IN CASE ANY WARNINGS BECOME NECESSARY.

GERAPETRITIS

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 6, 2:47 AM EST	Severe Thunderstorm Warning	GSP	Greenville, Laurens, Spartanburg	28 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; radar from the NEXRAD Level II archive.