Alert archive / South Carolina / Flash Flood Warnings in 2000

Flash Flood Warning 4, NWS Greenville-Spartanburg, SC

May 2, 2000Greenville County, Spartanburg County, South Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at May 2, 2000, 7:57 PM EDT for Greenville County, Spartanburg County, South Carolina. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 2, 2000, 7:57 PM EDT (23:57 UTC)
Expired: May 2, 2000, 10:00 PM EDT
In force: 2 hr
Issued by: NWS Greenville-Spartanburg, SC
Area: Whole counties

Counties Greenville County, SC, Spartanburg County, SC

The radar

The Greer radar (KGSP), 5 km from the middle of the area, began a volume at 23:58 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.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 12.0 hours before the alert went out and 244 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1669 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 13 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.

000 
WGUS52 KGSP 030000
FFWGSP
SCC045-083-030200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
757 PM EDT TUE MAY 2 2000

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS EXTENDED A

* FLASH FLOOD WARNING FOR...
  SPARTANBURG COUNTY IN UPSTATE SOUTH CAROLINA  
  NORTHERN GREENVILLE COUNTY IN UPSTATE SOUTH CAROLINA

* UNTIL 1000 PM EDT

* STRONG THUNDERSTORMS CONTINUED TO DEVELOP IN THE NORTHWEST CORNER
  OF GREENVILLE COUNTY AND WERE FOLLOWING A TRACK SOUTHEAST THROUGH
  CLEVELAND... MARIETTA... GREER AND SOUTHWEST SPARTANBURG COUNTY
  NEAR DUNCAN. FLOODING IS OCCURRING IN NORTHERN GREENVILLE COUNTY
  ALONG HIGHWAY 11... AND IN THE VICINITY OF LAKE ROBINSON AND PARIS 
  MOUNTAIN. IN SOUTHERN SPARTANBURG COUNTY... FLOODING WAS OCCURRING
  BETWEEN HIGHWAYS 290 AND 101. ADDITIONAL HEAVY RAINFALL WILL       
  LIKELY CAUSE ADDITIONAL FLOODING LATER THIS EVENING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. 
MOVE TO HIGHER GROUND.

$$
BURRUS

v

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at May 2, 1:50 PM EDT, 6 hours 7 minutes earlier.

Area forecast discussion, May 2, 1:50 PM EDT, 6 hours 7 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
150 PM EDT TUE MAY 2 2000

LOCATION OF SFC FRONT AGREES WELL WITH THE 12Z ETA. FRONT IS PROGGED
TO DEVELOP ALONG BARRIER COMPONENT AND SLIDE JUST S AND W OF THE
CWA BY WED MORNING. HIGH CONTINUES TO BUILD INTO THE REGION...
PUSHING SFC CONVERGENCE WELL W OF THE AREA WED AFTN THROUGH THU.
THIS RAISES SOME INTERESTING QUESTIONS AS THERE ARE RATHER LARGE
MODEL DIFFERENCES IN THE QPF FIELDS.

THE FIRST PERIOD LOOKS REASONABLE AS THE ETA GENERATES CONVECTIVE
PCPN ALONG ZONE OF STRONG SFC CONVERGENCE AS THE BACK DOOR FRONT
DROPS INTO THE NC PIEDMONT. THIS CONVECTION MOVES SE...ALONG THE
SFC BNDRY...OVERNIGHT. WEAK H5 MINOR WAVE AND RETREATING H3 JET
LEND SUPPORT FROM SOME KIND OF RELATIVELY WEAK MCS. LAPSE RATES ARE
NOT VERY STEEP...THOUGH LVLV MOISTURE IS INCREASING. CAPES AVERAGING
AROUND 1000 OVER MOST OF THE CWA ATTM. THUS...SOME CONVECTION IS
POSSIBLE ALMOST ANYWHERE THIS EVENING. WL KEEP AN EYE ON TRENDS...BUT
PLAN TO HAVE HIGHEST POPS ERN ZONES...AND LOWER POPS W.

BY WED MOST OF THE BNDRY LAYER FLOW OVER THE CWA IS E TO ENE...AND
RATHER BRISK IF THE ETA IS CORRECT. HARD TO IMAGINE MUCH CONVECTION
WL DEVELOP WHERE THERE IS NO SFC CONVERGENCE AND PRACTICALLY NO
FORCING ALOFT AS UPPER RIDGE ROLLS OVER THE AREA. THINK MOST
CONVECTION WOULD DEVELOP ON SFC CONVERGENCE WELL W OF THE CWA. THE
MTNS...HOWEVER...SHOULD SEE SOME TSRA DEVELOP W/DIFFERENTIAL HEATING
AND AS THEY WL BE ABOVE THS COLD POOL. ETA HAS LLVL DWPTS POOL
ALONG AND N OF THE BNDRY W/M60 DWPTS FEEDING ANYTHING THAT DOES GO
IN THE HIGHER ELEVATIONS. WL UNDERCUT TEMPS AS WE WL HAVE NE FLOW
AND A CLOUD DECK OVER THE COLD POOL. 12Z SFC TRAJECTORIES HAVE THE
SOURCE REGION FOR THE AIRMASS NOT TOO FAR TO THE N...SO WL ONLY
UNDERCUT RAFS BY 5 OR 6 DEG UNLESS OTHER OFFICES OBJECT.

ETA DEVELOPS A HUGE AREA OF RAIN OVER THE SW CWA WED NGHT AND KEEPS
IT THERE THROUGH THU. WE/D BE LOOKING AT 2 INCHES OF RAIN IF IT WAS
RIGHT. THE AVN IS FURTHER SW AND THE UKMET SIMPLY HAS A LOT LESS
PCPN. AGAIN...THINK MOST CONVECTION WL FORM ALONG SFC CONVERGENCE W
OF CWA...WITH ONLY THE MTN ELEVATIONS REALLY SEEING ANY SIG PCPN.
HARD TO COMPLETELY ARGUE AGAINST THE ETA HOWEVER...AND WL BUMP POPS
UP TO GOOD CHANCE SW HALF OF CWA WED NGHT AND THU.

STILL LOOKS WARM WITH AFTN AND EVENING TSRA IN THE EXTENDED.

PRELIMINARY NUMBERS:

AVL 53/72/54/73/56 3355
CLT 57/73/59/76/59 5333
GSP 58/74/60/77/60 3344

.GSP...NONE.

MCAVOY

In the hours before

Local storm report, May 2, 6:29 PM EDT, 1 hour 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
629 PM EDT TUE MAY 02 2000

TIME (EDT) .....CITY LOCATION....... ST   ...EVENT/REMARKS...
           .....COUNTY LOCATION.....

625 PM     SOUTH OF DENVER           NC   1.00 INCH HAIL
05/02/00   LINCOLN                        HAM OPERATOR HAD QUARTER
                                          SIZE HAIL ONGOING JUST
                                        `  SOUTH OF DENVER IN IN
                                          NORTHEAST LINCOLN CO.

TJB
NNNN

Local storm report, May 2, 6:40 PM EDT, 1 hour 17 minutes before

ZCZC CAEWRKLSR 000
TTAA00 KGSP 022240

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
640 PM EDT TUE MAY 02 2000

TIME (EDT) .....CITY LOCATION....... ST   ...EVENT/REMARKS...
           .....COUNTY LOCATION.....

640 PM     S OF MOORESVILLE          NC   1.00 INCH HAIL
05/02/00   IREDELL                        HAM OPERATOR HAD QUARTER
                                          SIZE HAIL ON RALEIGH
                                          SCHOOL ROAD AT
                                          MOORESVILLE.

TJB
NNNN

Local storm report, May 2, 6:45 PM EDT, 1 hour 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
645 PM EDT TUE MAY 02 2000

TIME (EDT) .....CITY LOCATION....... ST   ...EVENT/REMARKS...
           .....COUNTY LOCATION.....

639 PM     CORNELIUS                 NC   .88 INCH HAIL
05/02/00   MECKLENBURG                    HAM OPERATOR HAD NICKEL
                                          SIZE HAIL ON I-77 AT
                                          CORNELIUS.

TJB
NNNN

Local storm report, May 2, 6:56 PM EDT, 1 hour 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
656 PM EDT TUE MAY 02 2000

TIME (EDT) .....CITY LOCATION....... ST   ...EVENT/REMARKS...
           .....COUNTY LOCATION.....

643 PM     DAVIDSON                  NC   .88 INCH HAIL
05/02/00   MECKLENBURG                    HAM RADIO SPOTTER HAD
                                          NICKEL SIZE HAIL AT
                                          DAVIDSON COLLEGE ON
                                          HIGHWAY 115.

TJB
NNNN

Local storm report, May 2, 7:34 PM EDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
734 PM EDT TUE MAY 02 2000

TIME (EDT) .....CITY LOCATION....... ST   ...EVENT/REMARKS...
           .....COUNTY LOCATION.....

728 PM     NEAR SALISBURY            NC   1.00 INCH HAIL
05/02/00   ROWAN                          ROWAN CO COMMUNICATIONS
                                          REPORTED 3/4 TO ONE INCH
                                          HAIL ON I-85 IN EASTERN
                                          ROWAN COUNTY.

TJB
NNNN

Local storm report, May 2, 7:36 PM EDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
736 PM EDT TUE MAY 02 2000

TIME (EDT) .....CITY LOCATION....... ST   ...EVENT/REMARKS...
           .....COUNTY LOCATION.....

728 PM     KANNAPOLIS                NC   .75 INCH HAIL
05/02/00   CABARRAS                       SPOTTER (DAVID BEAVER)
                                          REPORTED DIME SIZE HAIL IN
                                          NORTHERN CABARRAS COUNTY
                                          IN KANNAPOLIS AREA.

TJB
NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 2, 4:44 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	46 min
May 2, 4:59 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	46 min
May 2, 5:11 PM EDT	Flash Flood Warning	GSP	Greenville, Spartanburg	3 hr
May 2, 5:28 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	47 min
May 2, 5:40 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	35 min
May 2, 6:12 PM EDT	Severe Thunderstorm Warning	GSP	Laurens	48 min
May 2, 7:54 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	51 min

Nearby

Flash Flood Warnings in South Carolina, 2000 Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.