Alert archive / Georgia / Flash Flood Warnings in 2022

Flash Flood Warning 19, NWS Greenville-Spartanburg, SC

September 3, 2022Oconee County, South Carolina; Rabun County, Stephens County, Georgia

NWS Greenville-Spartanburg, SC issued this flash flood warning at Sep 3, 2022, 7:04 AM EDT for Oconee County, South Carolina; Rabun County, Stephens County, Georgia. 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 3, 2022, 7:04 AM EDT (11:04 UTC)
Expired
Sep 3, 2022, 10:15 AM EDT
In force
3 hr
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Flood severity
None

Counties Rabun County, GA, Stephens County, GA, Oconee County, SC

The radar

The Greer radar (KGSP), 96 km from the middle of the area, began a volume at 11:06 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

Nashville Metro, TN (KBNA), launched 00:00Z, 11.1 hours before the alert went out and 341 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, Nashville Metro, TN at 00:00Z on 2022-09-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 730 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, Nashville Metro, TN at 00:00Z on 2022-09-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -66 square meters per square second.193958Sfc1 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
730 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
1257 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-66 m²/s²
0-3 km storm-relative helicity
-77 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 3, 9:03 AM EDTFlash Flood WarningGSPMacon3 hr
Sep 3, 3:00 PM EDTFlood WatchGSPAlexander, Avery, Buncombe, Burke, Caldwell, Graham and 12 more53 hr
Sep 3, 6:25 AM EDTAreal Flood AdvisoryGSPOconee3 hr
Sep 3, 7:42 AM EDTAreal Flood AdvisoryGSPOconee2 hr
Sep 3, 8:19 AM EDTFlash Flood Warning Considerable damage threatGSPOconee3 hr
Sep 3, 9:13 AM EDTFlash Flood WarningGSPAnderson, Oconee, Pickens3 hr
Sep 3, 11:08 AM EDTAreal Flood WarningGSPOconee3 hr
Sep 3, 12:23 PM EDTAreal Flood AdvisoryGSPOconee112 min
Sep 3, 2:00 PM EDTAreal Flood AdvisoryGSPOconee3 hr
Sep 3, 12:57 PM EDTAreal Flood AdvisoryGSPFranklin, Hart, Stephens2 hr

Nearby

Flash Flood Warnings in Georgia, 2022Flash Flood Warnings in South Carolina, 2022Every flash flood warning in 2022

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.