Alert archive / North Carolina / Flash Flood Warnings in 2021
Flash Flood Warning 11, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this flash flood warning at Aug 16, 2021, 4:39 AM EDT for Jackson County, Transylvania County, North 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 outline as issued.
The facts
- Issued
- Aug 16, 2021, 4:39 AM EDT (08:39 UTC)
- Expired
- Aug 16, 2021, 7:45 AM EDT
- In force
- 3 hr
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Jackson County, NC, Transylvania County, NC
The radar
The Greer radar (KGSP), 73 km from the middle of the area, began a volume at 08:41 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
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 8.7 hours before the alert went out and 238 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
- 919 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 972 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
574
WGUS52 KGSP 160839
FFWGSP
NCC099-175-161145-
/O.NEW.KGSP.FF.W.0011.210816T0839Z-210816T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Greenville-Spartanburg SC
439 AM EDT Mon Aug 16 2021
The National Weather Service in Greenville-Spartanburg has issued a
* Flash Flood Warning for...
South Central Jackson County in western North Carolina...
Southwestern Transylvania County in western North Carolina...
* Until 745 AM EDT.
* At 439 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. Additional rainfall amounts up to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Rosman, Gorges State Park, Jocassee Gorges, Lake Jocassee,
Sapphire and Connestee.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3502 8306 3505 8309 3516 8305 3511 8304
3509 8300 3511 8294 3523 8282 3510 8269
FLASH FLOOD...RADAR INDICATED
$$
Krentz1 follow-up statement
960
WGUS72 KGSP 160926
FFSGSP
Flash Flood Statement
National Weather Service Greenville-Spartanburg SC
526 AM EDT Mon Aug 16 2021
NCC099-175-161145-
/O.CON.KGSP.FF.W.0011.000000T0000Z-210816T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jackson NC-Transylvania NC-
526 AM EDT Mon Aug 16 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 AM EDT THIS
MORNING FOR SOUTH CENTRAL JACKSON AND SOUTHWESTERN TRANSYLVANIA
COUNTIES...
At 526 AM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain in the mountains above the warned
area. Between 4 and 6 inches of rain have fallen in the headwaters
of the French Broad River since 2 am. Additional rainfall amounts of
1 to 2 inches are possible in the northwestern part of Transylvania
County above Rosman. 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.
Some locations that will experience flash flooding include...
Rosman, Gorges State Park, Jocassee Gorges, Lake Jocassee,
Sapphire and Connestee.
The headwaters of the French Broad River above Blantyre will
continue to see rapid rises. In particular, at Rosman, the river
gauge was already up to 10.2 feet and rising rapidly at 515 am. At
a level of 10 feet, Hannah Ford Road will be flooded with is located
between Rosman and Brevard.
The river at Rosman will approach 11 feet by sunrise. At 11 feet,
the river will approach homes along Depot Street in Rosman. Flood
waters would inundate US 178 near the river gauge site.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3502 8306 3505 8309 3516 8305 3511 8304
3509 8300 3511 8294 3523 8282 3510 8269
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
MooreThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 8:06 PM EDT | Special Weather Statement | GSP | Cleveland | 24 min |
| Aug 15, 8:07 PM EDT | Special Weather Statement | GSP | Transylvania | 23 min |
| Aug 15, 8:09 PM EDT | Special Weather Statement | GSP | McDowell | 36 min |
| Aug 15, 8:18 PM EDT | Special Weather Statement | GSP | Rutherford | 27 min |
| Aug 15, 8:30 PM EDT | Special Weather Statement | GSP | Catawba, Lincoln | 30 min |
| Aug 15, 8:53 PM EDT | Special Weather Statement | GSP | Transylvania | 52 min |
| Aug 15, 9:05 PM EDT | Special Weather Statement | GSP | Catawba | 25 min |
| Aug 15, 9:18 PM EDT | Special Weather Statement | GSP | McDowell | 27 min |
| Aug 15, 9:45 PM EDT | Special Weather Statement | GSP | Avery | 30 min |
| Aug 16, 2:52 AM EDT | Areal Flood Advisory | GSP | Buncombe, Haywood, Henderson, Jackson, Transylvania | 3 hr |
| Aug 16, 3:02 AM EDT | Flash Flood Warning | GSP | Haywood, Jackson, Transylvania | 5 hr |
| Aug 16, 4:59 AM EDT | Flash Flood Warning | GSP | Henderson, Transylvania | 3 hr |
| Aug 16, 7:43 AM EDT | Flash Flood Warning | GSP | Transylvania | 4 hr |
| Aug 16, 8:51 AM EDT | Special Weather Statement | GSP | Catawba | 39 min |
| Aug 16, 9:49 AM EDT | Special Weather Statement | GSP | Catawba, Lincoln | 41 min |
| Aug 16, 10:24 AM EDT | Flash Flood Warning | GSP | Catawba, Lincoln | 3 hr |
| Aug 16, 2:20 PM EDT | Flash Flood Watch | GSP | Avery, Buncombe, Burke, Caldwell, Graham, Haywood and 11 more | 40 hr |
| Aug 16, 3:46 PM EDT | Special Weather Statement | GSP | Gaston, Mecklenburg | 59 min |
| Aug 16, 4:46 PM EDT | Special Weather Statement | GSP | Transylvania | 59 min |
| Aug 16, 5:14 PM EDT | Special Weather Statement | GSP | Davie, Iredell | 76 min |
| Aug 16, 6:53 PM EDT | Areal Flood Advisory | GSP | Jackson, Transylvania | 3 hr |
Nearby
Flash Flood Warnings in North Carolina, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.