Alert archive / North Carolina / Special Weather Statements in 2021
Special Weather Statement, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this special weather statement at Aug 4, 2021, 3:13 PM EDT for Graham County, North Carolina. It was in force for 47 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 4, 2021, 3:13 PM EDT (19:13 UTC)
- Expired
- Aug 4, 2021, 4:00 PM EDT
- In force
- 47 min
- Issued by
- NWS Greenville-Spartanburg, SC
County Graham County, NC
The radar
The Knoxville radar (KMRX), 86 km from the middle of the area, began a volume at 19:13 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 12:00Z, 7.2 hours before the alert went out and 243 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
- 258 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 590 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
402
WWUS82 KGSP 041913
SPSGSP
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
313 PM EDT Wed Aug 4 2021
NCZ051-042000-
Swain NC-
313 PM EDT Wed Aug 4 2021
...HEAVY RAIN SHOWERS WILL IMPACT WEST CENTRAL SWAIN COUNTY UNTIL
400 PM EDT...
At 311 PM EDT, Doppler radar was tracking a series of heavy rain
showers affecting the area about 12 miles north of Robbinsville, or
near Smoky Mountains-Twentymile Creek. These showers were nearly
stationary, or redeveloping in place.
Locations to be impacted include...
Smoky Mountains-Twentymile Creek, Fontana Village, Smoky Mountains-
Fontana Area, Fontana Lake, Deals Gap and Tapoco. Stream levels will
rise rapidly along Round Mountain Branch and Twentymile Creek.
Very heavy rainfall rates up to one inch per hour will be possible
in these areas. Deep ponding of water will develop in low-lying
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 3548 8391 3552 8388 3553 8382 3556 8377
3556 8372 3552 8369 3545 8379 3545 8380
3544 8381 3545 8385 3545 8386 3546 8387
3547 8390 3545 8393 3546 8395
TIME...MOT...LOC 1911Z 106DEG 1KT 3550 8381
$$
HGThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 5:26 PM EDT | Special Weather Statement | GSP | Rabun | 49 min |
| Aug 4, 6:24 PM EDT | Special Weather Statement | GSP | Habersham | 36 min |
Nearby
Special Weather Statements in North 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.