Alert archive / South Carolina / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 39, NWS Greenville-Spartanburg, SC

April 3, 2006Greenwood County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 3, 2006, 4:26 PM EDT for Greenwood County, South Carolina. It was in force for 45 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 3, 2006, 4:26 PM EDT (20:26 UTC)
Expired
Apr 3, 2006, 5:11 PM EDT
In force
45 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Counties, with a storm outline in the text

County Greenwood County, SC

The radar

The Greer radar (KGSP), 80 km from the middle of the area, began a volume at 20:26 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.

What was reported inside it

TimeReportWhereRemark
Apr 3, 4:29 PM EDTHAIL 1.755 Wsw Greenwood, SC

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 3 minutes after it went out.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 3, 12:54 PM EDTTornado WatchSPC7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.4 hours before the alert went out and 235 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, Peachtre/Fal Fld, GA at 12:00Z on 2006-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 735 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, Peachtre/Fal Fld, GA at 12:00Z on 2006-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.19395878Sfc1 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
735 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
613 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
125 m²/s²
Significant tornado parameter
0.5
Supercell composite
1.9

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KGSP 032026
SVRGSP
SCC047-032130-
/O.NEW.KGSP.SV.W.0039.060403T2026Z-060403T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
426 PM EDT MON APR 3 2006

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

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

* UNTIL 530 PM EDT

* AT 422 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES
  SOUTHWEST OF GREENWOOD...AND MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NINETY SIX AROUND 445 PM EDT...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE
OR NO ADVANCE WARNING. SEEK SHELTER IN AN INTERIOR ROOM ON THE LOWEST
LEVEL OF A HOUSE OR OTHER STURDY STRUCTURE IF A TORNADO IS SPOTTED.

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. SEEK SHELTER INDOORS AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM PASSES.

LAT...LON 3428 8227 3417 8224 3401 8229 3402 8197
      3412 8188 3430 8212

$$

PDM/LGL
2 follow-up statements
000 
WWUS52 KGSP 032039
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
438 PM EDT MON APR 3 2006

SCC047-032130-
/O.CON.KGSP.SV.W.0039.000000T0000Z-060403T2130Z/
GREENWOOD SC-
438 PM EDT MON APR 3 2006

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 530 PM EDT FOR 
GREENWOOD COUNTY...

AT 434 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 3 MILES SOUTHWEST OF NINETY SIX...OR ABOUT 6 MILES SOUTHEAST
OF GREENWOOD...MOVING EAST AT 35 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  DYSON AROUND 445 PM EDT...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE
OR NO ADVANCE WARNING. SEEK SHELTER IN AN INTERIOR ROOM ON THE LOWEST
LEVEL OF A HOUSE OR OTHER STURDY STRUCTURE IF A TORNADO IS SPOTTED.

PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT FOR LARGE HAIL AND
DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN OCCUR
WITH ANY THUNDERSTORM. SEEK SHELTER INDOORS AWAY FROM WINDOWS AND
DOORS UNTIL THE STORM PASSES.

LAT...LON 3426 8220 3414 8219 3403 8217 3402 8197
      3412 8188 3428 8207

$$

PDM/LGL
000 
WWUS52 KGSP 032111
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
510 PM EDT MON APR 3 2006

SCC047-032120-
/O.CAN.KGSP.SV.W.0039.000000T0000Z-060403T2130Z/
GREENWOOD SC-
510 PM EDT MON APR 3 2006

...THE SEVERE THUNDERSTORM WARNING FOR GREENWOOD COUNTY IS 
CANCELLED...

THE STORM HAS MOVED OUT OF THE AREA.

LAT...LON 3426 8220 3414 8219 3403 8217 3402 8197
      3412 8188 3428 8207

$$

PDM/LGL

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 Apr 3, 3:10 PM EDT, 1 hour 16 minutes earlier.

Area forecast discussion, Apr 3, 3:10 PM EDT, 1 hour 16 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
310 PM EDT MON APR 3 2006

.SHORT TERM /TONIGHT THROUGH THURSDAY/...
TORNADO WATCH 147 CONTINUES FOR MOST OF THE CWFA UNTIL 8 PM WITH THE
RISK FOR SVR STORMS CONTINUING JUST ALONG AND OUT AHEAD OF APPROACHING
COLD FRONT WHICH AS OF 19 UTC WAS NEARING THE SW NC MTNS. FROM MID-
EVENING ONWARD...THE PRIMARY CONCERN IS THE THREAT OF STRONG GRADIENT
WINDS AS THE COMBINATION OF A PERIOD OF SHARP CAA...STRONG SFC PRESSURE
RISES...A 50 KT 85H JET AND A 90 KT 50H JET PERPENDICULAR TO THE HIGHER
TERRAIN LEADS TO THE PROBABILITY OF DAMAGING WIND GUSTS. MODEL TIME
HEIGHTS THROUGH THE NORTHERN NC MTNS/FTHLS INDICATE A PERIOD OF DEEP
DOWNWARD OMEGA THIS EVENING...BUT MIXING IS LIMITED IN THE LOWER
TERRAIN...NOT SURPRISING GIVING THE TIME OF DAY. SO...BASED ON
THIS HAVE UPGRADED NC MTNS TO HIGH WIND WARNING AND ISSUED WARNING
AS WELL FOR NC FTHLS.

WINDS SHOULD DIMINISH RAPIDLY DURING THE DAY TUESDAY...BUT A
RESURGENCE IN 850 MB FLOW WILL BRING VERY WINDY CONDITIONS BACK
INTO THE SOUTHERN APPALACHIANS LATE TUESDAY NIGHT. THE INTENSE
UPPER LEVEL JET CORE WILL ALSO REMAIN OVER THE SRN APPALACHIANS
THROUGH TUESDAY NIGHT UNTIL UPPER RIDGING STARTS TO BUILD IN FROM
THE WEST. MODELS REVEAL SOME DEGREE OF MID LEVEL MOISTURE SPILLING
OVER THE RIDGE BY THURSDAY...AS A LOW LEVEL WARM FRONT LIFTS
NORTHEAST THROUGH THE TN VALLEY.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
DEEP LOW PRES MOVING EAST FROM THE CENTRAL PLAINS EARLY FRIDAY
SHOULD GRADUALLY GET ABSORBED BY THE ERN CANADIAN VORTEX OVER THE
WEEKEND. THIS WILL BRING A TROUGH AXIS ACROSS THE FORECAST AREA
MAINLY DURING SATURDAY. SLIGHTLY DEEPER MOISTURE AHEAD OF THIS WAVE
WILL AFFECT MAINLY MOUNTAIN LOCATIONS LATE FRIDAY INTO FRI
NIGHT...SPREADING SMALLER CHANCES THROUGH THE PIEDMONT INTO
SATURDAY. RESIDUAL NW FLOW MOISTURE MAY LINGER ALONG THE TN BORDER
THROUGH SAT NIGHT BEFORE DRYING. HIGH PRES WILL THEN REMAIN DOMINANT
ALONG THE SE COAST INTO EARLY NEXT WEEK.

&&

.AVIATION...
WILL GO WITH A SMATTERING OF VCTS FOR NOW FOR THE UPSTATE TAFS AND
KCLT AS DEEP CONVECTIVE DEVELOPMENT PERCOLATES INTO THE EARLY
EVENING HOURS. A GUSTY SW GRADIENT WIND CONCERN CONTINUES AS WELL
AHEAD OF APPROACHING COLD FRONT. EXPECT A GUSTY WIND SHIFT TO WEST
THEN NORTHWEST DURING THE EVENING HOURS IN THE IMMEDIATE
POST-FRONTAL AIRMASS. FOR THE OVERNIGHT HOURS...WILL KEEP GUSTY NW
WINDS CONFINED JUST TO KAVL AS CAA DIMINISHES ENOUGH TO REMOVE GUSTS
EAST OF THE MTNS.

&&

.FIRE WEATHER...
AFTERNOON RELATIVE HUMIDITY VALUES WILL FALL TO BETWEEN 20 AND 25
PERCENT IN ALL LOCATIONS BUT THE NORTHERN MOUNTAINS TUESDAY
AFTERNOON. SOME WINDY CONDITIONS WILL LINGER IN THE MORNING...BUT
WITH DIMINISHING WINDS THROUGH THE DAY...THE ONLY REAL THREAT FOR
RED FLAG APPEARS TO BE THE SOUTHERN AND CENTRAL MOUNTAINS OF NC. A
FIRE WEATHER WATCH MAY BE NEEDED FOLLOWING COORDINATION WITH
FORESTRY USERS.

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...WIND ADVISORY FOR GAZ010-017 UNTIL 6 AM TUESDAY.
  ...LAKE WIND ADVISORY FOR GAZ018-026-028-029 UNTIL 6 AM TUESDAY.
NC...HIGH WIND WARNING FOR NCZ033-034-048>055-058-059-062>067 UNTIL
     6 AM TUESDAY.
  ...WIND ADVISORY FOR NCZ033-034-048>055-058-059-062>067 UNTIL 6
     PM MONDAY.
  ...LAKE WIND ADVISORY FOR NCZ035>037-056-057-068>072-082 UNTIL 6
     AM TUESDAY.
SC...WIND ADVISORY FOR SCZ001>003 UNTIL 6 AM TUESDAY.
  ...LAKE WIND ADVISORY FOR SCZ004>014-019 UNTIL 6 AM TUESDAY.
&&

SHORT TERM...CSH/HG
LONG TERM...HG
AVIATION...CSH
FIRE WEATHER...CSH/HG
Hazardous weather outlook, Apr 3, 6:06 AM EDT, 10 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
606 AM EDT MON APR 3 2006

GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-
SCZ001>014-019-041000-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-CALDWELL-
ALEXANDER-IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-
BUNCOMBE-MCDOWELL-BURKE-CATAWBA-ROWAN-GRAHAM-NORTHERN JACKSON-
MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-POLK-RUTHERFORD-
CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-
OCONEE MOUNTAINS-PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-
GREATER OCONEE-GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-
CHEROKEE-YORK-ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-
GREENWOOD-
606 AM EDT MON APR 3 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND
UPSTATE SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS WILL CONTINUE TODAY. SOME OF THE STORMS
WILL BE SEVERE WITH DAMAGING WINDS AND LARGE HAIL.

WINDS WILL INCREASE ACROSS ALL OF THE AREA THIS AFTERNOON AND
CONTINUE STRONG ACROSS THE NORTH CAROLINA MOUNTAINS TONIGHT. WINDY
CONDITIONS MAY CONTINUE THIS EVENING OUTSIDE OF THE MOUNTAINS.
PLEASE SEE CAENPWGSP FOR DETAILS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

VERY LOW RELATIVE HUMIDITY WILL OCCUR TUESDAY AND WINDS MAY REACH
RED FLAG CRITERIA IN SOME LOCATIONS. COORDINATION WITH LAND
MANAGEMENT AGENCIES WILL BE NECESSARY TODAY TO DETERMINE IF A FIRE
WEATHER WATCH IS NEEDED.

VERY LOW RELATIVE HUMIDITY IS EXPECTED AGAIN WEDNESDAY...BUT WINDS
ARE NOT EXPECTED TO REACH RED FLAG CRITERIA AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY.

In the hours before

Local storm report, Apr 3, 3:36 PM EDT, 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
336 PM EDT MON APR 03 2006

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

0723 AM     HAIL             6 WSW VALE              35.51N 81.50W
04/03/2006  E0.88 INCH       LINCOLN            NC   DEPT OF HIGHWAYS

            REPORTED IN TOLUCA ON HIGHWAY 18.

&&

LG
Local storm report, Apr 3, 3:37 PM EDT, 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
337 PM EDT MON APR 03 2006

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

0330 PM     HAIL             CAMPOBELLO              35.12N 82.15W
04/03/2006  E0.75 INCH       SPARTANBURG        SC   TRAINED SPOTTER

&&

LG
Local storm report, Apr 3, 4:03 PM EDT, 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
403 PM EDT MON APR 03 2006

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

0340 PM     HAIL             WATERLOO                34.35N 82.06W
04/03/2006  E0.75 INCH       LAURENS            SC   PUBLIC

0325 PM     HAIL             10 E TRYON              35.21N 82.06W
04/03/2006  E0.75 INCH       POLK               NC   LAW ENFORCEMENT

&&

LG
Local storm report, Apr 3, 4:12 PM EDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
412 PM EDT MON APR 03 2006

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

0402 PM     HAIL             12 E HARRIS             35.24N 81.66W
04/03/2006  E0.75 INCH       CLEVELAND          NC   AMATEUR RADIO

&&

LG
Local storm report, Apr 3, 4:19 PM EDT, 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
419 PM EDT MON APR 03 2006

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

0414 PM     HAIL             BOILING SPRINGS NC      35.25N 81.67W
04/03/2006  E0.75 INCH       CLEVELAND          NC   LAW ENFORCEMENT

&&

LG
Local storm report, Apr 3, 4:21 PM EDT, 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
421 PM EDT MON APR 03 2006

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

0415 PM     HAIL             BOILING SPRINGS NC      35.25N 81.67W
04/03/2006  M0.88 INCH       CLEVELAND          NC   TRAINED SPOTTER

            HAIL SLIGHTLY SMALLER THAN QUARTER-SIZE FELL IN BOILING
            SPRINGS.

&&

BURRUS

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 2, 11:27 PM EDTSevere Thunderstorm WarningGSPAnderson, Greenville50 min
Apr 3, 12:04 AM EDTSevere Thunderstorm WarningGSPLaurens52 min
Apr 3, 4:50 AM EDTLake Wind AdvisoryGSPAbbeville, Anderson, Cherokee, Chester, Greenwood, Laurens and 2 more25 hr
Apr 3, 4:50 AM EDTWind AdvisoryGSP25 hr
Apr 3, 8:22 AM EDTSevere Thunderstorm WarningGSPYork11 min
Apr 3, 3:13 PM EDTSevere Thunderstorm WarningGSPGreenville, Spartanburg44 min
Apr 3, 3:39 PM EDTSevere Thunderstorm WarningGSPLaurens52 min
Apr 3, 4:06 PM EDTSevere Thunderstorm WarningGSPAbbeville28 min
Apr 3, 4:55 PM EDTSevere Thunderstorm WarningGSPChester24 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2006Every severe thunderstorm warning in 2006

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.