Alert archive / Georgia / Flash Flood Warnings in 2021
Flash Flood Warning 17, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this flash flood warning at Aug 17, 2021, 11:52 AM EDT for Habersham County, Rabun County, Georgia. It was in force for 5 hr. 2 reports 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
- Aug 17, 2021, 11:52 AM EDT (15:52 UTC)
- Expired
- Aug 17, 2021, 4:30 PM EDT
- In force
- 5 hr
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Habersham County, GA, Rabun County, GA
The radar
The Greer radar (KGSP), 116 km from the middle of the area, began a volume at 15:55 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 17, 1:30 PM EDT | FLOOD | 1 Ese Sky Valley, GA | 911 CALL CENTER REPORTED MINOR FLOODING ON ROADWAYS SKY VALLEY WAY AND RIDGEPOLE DR. |
| Aug 17, 1:30 PM EDT | FLASH FLOOD | 1 Sw Tiger, GA | 911 CALL CENTER REPORTED FLASH FLOOD ON SAGA MOUNTAIN RD NEAR TIGER CREEK |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 3.9 hours before the alert went out and 184 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.
- Mixed-layer CAPE
- 259 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 461 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 197 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
The text
As transmitted.
052
WGUS52 KGSP 171552
FFWGSP
GAC137-241-171900-
/O.NEW.KGSP.FF.W.0017.210817T1552Z-210817T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Greenville-Spartanburg SC
1152 AM EDT Tue Aug 17 2021
The National Weather Service in Greenville-Spartanburg has issued a
* Flash Flood Warning for...
Northern Habersham County in northeastern Georgia...
Rabun County in northeastern Georgia...
* Until 300 PM EDT.
* At 1152 AM EDT, Doppler radar and automated rain gauges indicated
that widespread rainfall amounts of 2 to 3 inches have already
fallen across Rabun and Northern Habersham Counties since this
morning. Widespread heavy tropical showers and embedded
thunderstorms will continue to develop across the region into
early afternoon. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
When it is safe to do so, please report flooding or landslides
threatening roads or property to the National Weather Service
Greenville-Spartanburg by calling toll free, 1, 800, 2 6 7, 8 1 0 1,
by posting on our Facebook page, or via Twitter using hashtag
NWSGSP. Your message should describe the specific location where
impacts occurred and the depth of flooding observed.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3486 8365 3490 8359 3494 8358 3494 8355
3499 8354 3500 8311 3494 8313 3489 8324
3480 8332 3473 8336 3469 8334 3463 8339
3467 8351 3464 8358 3456 8362 3457 8363
3466 8364 3474 8361 3479 8365
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$1 follow-up statement
620
WGUS52 KGSP 171817
FFWGSP
GAC137-241-172030-
/O.EXT.KGSP.FF.W.0017.000000T0000Z-210817T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Greenville-Spartanburg SC
217 PM EDT Tue Aug 17 2021
The National Weather Service in Greenville-Spartanburg has extended
the
* Flash Flood Warning for...
Northern Habersham County in northeastern Georgia...
Rabun County in northeastern Georgia...
* Until 430 PM EDT.
* At 217 PM EDT, Rain gages across the warned area indicate that
widespread rainfall totals today have been 3 to 4 inches with the
threat of additional heavy rain showers ongoing. Excessive runoff
will continue all afternoon across Rabun and adjacent areas of
Habersham County.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
When it is safe to do so, please report flooding or landslides
threatening roads or property to the National Weather Service
Greenville-Spartanburg by calling toll free, 1, 800, 2 6 7, 8 1 0 1,
by posting on our Facebook page, or via Twitter using hashtag
NWSGSP. Your message should describe the specific location where
impacts occurred and the depth of flooding observed.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3486 8365 3490 8359 3494 8358 3494 8355
3499 8354 3500 8311 3494 8313 3489 8324
3480 8332 3473 8336 3469 8334 3463 8339
3467 8351 3464 8358 3456 8362 3457 8363
3466 8364 3474 8361 3479 8365
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 10:23 AM EDT | Special Weather Statement | GSP | Elbert | 37 min |
| Aug 17, 10:36 AM EDT | Tornado Warning | GSP | Habersham | 39 min |
| Aug 17, 10:58 AM EDT | Tornado Warning | GSP | Elbert, Hart | 26 min |
| Aug 17, 11:19 AM EDT | Special Weather Statement | GSP | Habersham | 26 min |
| Aug 17, 11:29 AM EDT | Flash Flood Warning | GSP | Habersham | 5 hr |
| Aug 17, 11:47 AM EDT | Tornado Warning | GSP | Habersham, Rabun, Stephens | 13 min |
| Aug 17, 1:58 PM EDT | Special Weather Statement | GSP | Rabun | 32 min |
| Aug 17, 2:31 PM EDT | Tornado Warning | GSP | Rabun | 19 min |
| Aug 17, 4:28 PM EDT | Areal Flood Warning | GSP | Habersham | 6 hr |
Nearby
Flash Flood Warnings in Georgia, 2021Every flash flood warning in 2021
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.