Alert archive / South Carolina / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 12, NWS Greenville-Spartanburg, SC

April 3, 2000Oconee County, Pickens County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 3, 2000, 4:46 AM EDT for Oconee County, Pickens County, South Carolina. It was in force for 29 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 3, 2000, 4:46 AM EDT (08:46 UTC)
Expired
Apr 3, 2000, 5:15 AM EDT
In force
29 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Whole counties

Counties Oconee County, SC, Pickens County, SC

The radar

The Greer radar (KGSP), 62 km from the middle of the area, began a volume at 08:45 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.

What was reported inside it

TimeReportWhereRemark
Apr 3, 4:55 AM EDTTornado F1Clemson, SC

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 8.8 hours before the alert went out and 305 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, Greensboro/Hi Pt, NC at 00:00Z on 2000-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Greensboro/Hi Pt, NC at 00:00Z on 2000-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 296 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
606 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
296 m²/s²
0-3 km storm-relative helicity
427 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 030848
SVRGSP
SCC073-077-030915-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
446 AM EDT MON APR 3 2000

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

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

* UNTIL 515 AM EDT

* AT 446 AM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM WITH DAMAGING WINDS 4 MILES SOUTHEAST OF WALHALLA...OR
  ABOUT 4 MILES NORTHWEST OF SENECA...MOVING EAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SENECA AT 450 AM EDT
  KEOWEE AT 453 AM EDT
  CENTRAL AT 455 AM EDT
  PICKENS AT 505 AM EDT
  EASLEY AT 510 AM EDT
  DACUSVILLE AT 515 AM 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 SEVERE THUNDERSTORM.

$$

DELGADO

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, 2:22 AM EDT, 2 hours 24 minutes earlier.

Area forecast discussion, Apr 3, 2:22 AM EDT, 2 hours 24 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
222 AM EDT MON APR 3 2000

CURRENT IMPULSE LEAVES AREA THIS MORNING BUT ANOTHER ARRIVES THIS
EVENING. MAIN SHORTWAVE ARRIVING TUE. EASTERN EDGE OF MAIN RH BAND
SHIFTS FROM FOOTHILLS/PIEDMONT INTO VA THIS MORNING. MOUNTAINS IN
HIGH RH THROUGH TODAY. FRONT AND ASSOCIATED MOISTURE MOVE INTO AREA
THIS EVENING...REACHING BLUE RIDGE BY 06Z...AND RDU-CAE LINE BY 12Z.
MEAGER DRYING BEHIND FRONT EVIDENT OVER GA/SC PORTION OF AREA TUE
AFTERNOON. ETA/NGM MAINTAIN LIFT BEHIND FRONT AND ENOUGH LOW LEVEL
MOISTURE AND INSTABILITY FOR SCATTERED SHOWERS TUESDAY. MEANWHILE
COLD ADVECTION BRINGS SUB-CRITICAL THICKNESS TO NC MOUNTAINS WITH
MOISTURE REMAINING AND UPSLOPE COMPONENT INCREASING...SUPPORTING
POPS NC MOUNTAINS WITH A CHANGEOVER TO SNOW.

EXPECT RELATIVE LULL IN PRECIPITATION THIS MORNING AS CURRENT
ACTIVITY SHIFTS N. MODEL TIME SECTIONS SHOW MID LEVELS DRYING
TODAY...AND LOW LEVEL OMEGA BY LATE AFTERNOON. EXPECT ACTIVITY TO BE
MORE CONVECTIVE IN NATURE AS AREA RAPIDLY DESTABILIZES. LOW LEVEL
CONVERGENCE AND UPPER DIVERGENCE INCREASE OVER E TN BY THIS EVENING
AHEAD OF ARRIVING FRONT. DEEP MOISTURE TO RETURN BY EARLY EVENING AS
BOUNDARY REACHES E TN WITH PRECIPITABLE WATER NEAR 1.5 INCHES. BY
06Z UPPER DIVERGENCE SHIFTS TO CHESAPEAKE BAY WHILE BEST LOW LEVEL
CONVERGENCE MOVES INTO SHENANDOAH AREA.

THREAT OF SEVERE AND FLASH FLOODING BEST THIS AFTERNOON AND EVENING.
MOUNTAINS MOST PRONE TO FLOOD THEAT AS AREA HAS RECEIVED MOST
RAINFALL AND WILL BEAR THE BRUNT OF HEAVY RAINFALL BEFORE SUPPORTIVE
PARAMETERS SHIFT NE INTO VA. WILL ISSUE FLASH FLOOD WATCH FOR ALL
MOUNTAINS FOR TODAY AND THIS EVENING...AND SEVERE WEATHER OUTLOOK
FOR ENTIRE AREA FOCUSED ON THIS AFTERNOON AND EVENING. WILL USE
COMPROMISE ON GUIDANCE TEMPS/POPS.

THANKS MRX FOR COORDINATION!

AVL TO 067/051 055/032 058 07895F <<<896 N NC MOUNTAINS
CLT TW 073/057 064/035 064 07685
GSP TE 072/056 063/036 066 07784

.GSP...FLASH FLOOD WATCH GA/NC/SC MOUNTAINS TODAY AND THIS EVENING.

JAT

Nearby

Severe Thunderstorm Warnings in South Carolina, 2000Every severe thunderstorm warning in 2000

Sources

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