Alert archive / South Carolina / Special Weather Statements in 2021
Special Weather Statement, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this special weather statement at Aug 9, 2021, 4:12 PM EDT for Chester County, South Carolina. It was in force for 48 min. 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 9, 2021, 4:12 PM EDT (20:12 UTC)
- Expired
- Aug 9, 2021, 5:00 PM EDT
- In force
- 48 min
- Issued by
- NWS Greenville-Spartanburg, SC
County Chester County, SC
The radar
The Columbia radar (KCAE), 73 km from the middle of the area, began a volume at 20:14 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, 8.2 hours before the alert went out and 196 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
- 430 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1026 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
069
WWUS82 KGSP 092012
SPSGSP
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
412 PM EDT Mon Aug 9 2021
SCZ014-092100-
Chester SC-
412 PM EDT Mon Aug 9 2021
...HEAVY RAIN SHOWERS WILL IMPACT SOUTHERN CHESTER COUNTY UNTIL 500
PM EDT...
At 409 PM EDT, Doppler radar was tracking a series of heavy rain
showers about 12 miles north of Winnsboro, or 4 miles east of
Blackstock, moving east at 5 mph. These showers will redeveloping in
place.
Locations to be impacted include...Blackstock, Great Falls and
Cornwell. Rapid rises are also expected along Bell Creek in the
extreme southern Chester County.
Very heavy rainfall rates of 1 to 2 inches per hour will be possible
in these areas. Deep ponding of water will develop in low-lying and
poor drainage areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall may flood areas with poor drainage, such as
ditches and underpasses. Avoid these areas and do not cross flooded
roads. Water levels of small streams may also rise rapidly. Seek
higher ground if threatened by flood waters.
&&
LAT...LON 3456 8118 3463 8118 3470 8102 3461 8092
3454 8092
TIME...MOT...LOC 2009Z 256DEG 5KT 3455 8107
$$
HGThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 5:52 PM EDT | Special Weather Statement | GSP | Buncombe | 23 min |
| Aug 9, 6:16 PM EDT | Special Weather Statement | GSP | Gaston | 29 min |
| Aug 9, 6:19 PM EDT | Special Weather Statement | GSP | Buncombe | 26 min |
| Aug 9, 6:44 PM EDT | Special Weather Statement | GSP | Buncombe | 31 min |
| Aug 9, 4:42 PM EDT | Special Weather Statement | GSP | Chester | 48 min |
Nearby
Special Weather Statements in South Carolina, 2021Every special weather statement 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.