Alert archive / South Carolina / Flash Flood Warnings in 2000

Flash Flood Warning 18, NWS Greenville-Spartanburg, SC

September 22, 2000Greenwood County, Laurens County, South Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Sep 22, 2000, 12:02 PM EDT for Greenwood County, Laurens County, South Carolina. It was in force for 3 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
Sep 22, 2000, 12:02 PM EDT (16:02 UTC)
Expired
Sep 22, 2000, 3:00 PM EDT
In force
3 hr
Issued by
NWS Greenville-Spartanburg, SC
Area
Whole counties

Counties Greenwood County, SC, Laurens County, SC

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 4.0 hours before the alert went out and 248 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, Charleston AFB, SC at 12:00Z on 2000-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2407 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, Charleston AFB, SC at 12:00Z on 2000-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.1939Sfc1 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
2407 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
613 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
36 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 221607
FFWGSP
SCC047-059-221900-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1202 PM EDT FRI SEP 22 2000

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LAURENS COUNTY IN UPSTATE SOUTH CAROLINA
  GREENWOOD COUNTY IN UPSTATE SOUTH CAROLINA

* UNTIL 300 PM EDT

* AT NOON EDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY   
  RAIN CROSSING GREENWOOD AND LAURENS COUNTIES. COUNTY OFFICIALS IN  
  GREENWOOD COUNTY REPORTED THAT SEVERAL ROADS HAD EXPERIENCED       
  FLOODING FROM NEARBY CREEKS.

* ADDITIONAL RUNOFF FROM EARLIER RAINFALL IS EXPECTED TO CAUSE       t
  STREAMS AND CREEKS TO RISE FURTHER.

MOTORISTS SHOULD BE ALERT FOR WATER COVERED ROADS...AND SHOULD NOT 
ATTEMPT TO DRIVE THROUGH WATER. CHILDREN SHOULD NOT BE ALLOWED TO 
PLAY NEAR STREAMS OR DITCHES.

$$
JAT

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 Sep 22, 10:12 AM EDT, 1 hour 50 minutes earlier.

Area forecast discussion, Sep 22, 10:12 AM EDT, 1 hour 50 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1012 AM EDT FRI SEP 22 2000

FORECAST STILL APPEARS ON TRACK REGARDING PRECIPITATION FLASH FLOOD
POTENTIAL. CURRENT RADAR TRENDS SHOW SCATTERED SHOWERS ACROSS THE CWA WITH
HEAVY BANDS OF CONVECTION MOVING NORTH ACROSS THE CSRV AND INTO SRN
UPSTATE SC. STILL EXPECTING PERIOD OF POTENTIAL EXCESSIVE RAINFALL
TO BE TONIGHT AS DEEPEST MOISTURE FROM HELENE REMNANTS CROSSES THE
AREA. WILL BE ACCESSING ANY POSSIBLE CHANGE TO FLASH FLOOD WATCH
AFTER 12Z GUIDANCE ARRIVES.

THE PRESSURE GRADIENT BETWEEN SFC HIGH PRESSURE CENTERED OVER THE
MID-ATLANTIC STATES AND THE LANDFALLING T.S. HELENE IS PRODUCING A
NORTHEAST FLOW ACROSS THE FOOTHILLS AND PIEDMONT. DRIER AND COOLER
AIR IS BEING ADVECTED SOUTHWEST AND HAVE NOTICED DROPS IN DWPT AND
TEMP ACROSS NC ZONES THIS MORNING. SFC BOUNDARY TO THE SOUTH OF THE
CWA AND WOULD EXPECT TROPICAL LOW TO TRACK ALONG THIS BOUNDARY LATER
TODAY AND TONIGHT...POSSIBLY NUDGING THE FRONT BACK NORTH A
LITTLE...BUT KEEPING MOST OF THE CWA ON THE COOL SIDE OF BOUNDARY.
WILL NEED TO ADJUST WINDS TO BE NORTHEAST THIS AFTERNOON AND LOWER
HIGH TEMPS. WILL ALSO BUMP POPS TO CATEGORICAL FOR NE GA AND UPSTATE
SC SECTIONS.

.GSP...
GA...FLASH FLOOD WATCH TONIGHT THROUGH SATURDAY MORNING
GAZ010-017-018-026-028-029.
NC...FLASH FLOOD WATCH TONIGHT THROUGH SATURDAY MORNING
NCZ066>072-082.
SC...FLASH FLOOD WATCH TONIGHT THROUGH SATURDAY MORNING
SCZ001>014-019.

MOYER

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 22, 1:40 PM EDTFlash Flood WarningGSPUnion3 hr

Nearby

Flash Flood Warnings in South Carolina, 2000Every 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.