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 12, 2021, 2:48 PM EDT for Transylvania County, North Carolina. It was in force for 27 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 12, 2021, 2:48 PM EDT (18:48 UTC)
- Expired
- Aug 12, 2021, 3:15 PM EDT
- In force
- 27 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Hail
- 0.25 in
- Wind
- 40
County Transylvania County, NC
The radar
The Greer radar (KGSP), 72 km from the middle of the area, began a volume at 18:48 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, 6.8 hours before the alert went out and 265 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
- -134 J/kg
- Mixed-layer LCL
- 1012 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this special weather statement went out at Aug 12, 1:48 PM EDT, 1 hour earlier.
Area forecast discussion, Aug 12, 1:48 PM EDT, 1 hour before
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</html>Hazardous weather outlook, Aug 12, 4:12 AM EDT, 10 hours 36 minutes before
Hazardous Weather Outlook National Weather Service Greenville-Spartanburg SC 412 AM EDT Thu Aug 12 2021 NCZ033-035>037-048>053-056>059-068>072-082-501>510-SCZ007>009- 012>014-019-130815- Avery-Alexander-Iredell-Davie-Madison-Yancey-Mitchell-Swain-Haywood- Buncombe-Catawba-Rowan-Graham-Northern Jackson-Cleveland-Lincoln- Gaston-Mecklenburg-Cabarrus-Union NC-Caldwell Mountains- Greater Caldwell-Burke Mountains-Greater Burke-McDowell Mountains- Eastern McDowell-Rutherford Mountains-Greater Rutherford- Polk Mountains-Eastern Polk-Spartanburg-Cherokee-York-Laurens- Union SC-Chester-Greenwood- 412 AM EDT Thu Aug 12 2021 This Hazardous Weather Outlook is for portions of western North Carolina and eastern Upstate South Carolina. .DAY ONE...Today and tonight. Scattered thunderstorms will develop across the area today, with the greatest coverage during the afternoon. Any of these storms will be capable of dangerous cloud-to-ground lightning as well as heavy downpours, which may cause localized flash flooding. A few storms will produce brief damaging wind gusts. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... None. GAZ010-017-018-026-028-029-NCZ062>065-SCZ001>006-010-011-130815- Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Macon-Southern Jackson- Transylvania-Henderson-Oconee Mountains-Pickens Mountains- Greenville Mountains-Greater Oconee-Greater Pickens- Greater Greenville-Anderson-Abbeville- 412 AM EDT Thu Aug 12 2021 This Hazardous Weather Outlook is for northeast Georgia, western upstate South Carolina, and the southern mountains of North Carolina. .DAY ONE...Today and tonight. Scattered thunderstorms will develop across the area today, with the greatest coverage during the afternoon. Any of these storms will be capable of dangerous cloud-to-ground lightning as well as heavy downpours, which may cause localized flash flooding. A few storms will produce brief damaging wind gusts. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Daily chances of showers and thunderstorms will continue for several more days. A cold front will stall over the area Saturday or Saturday night and linger through Monday, further enhancing the development of precipitation. The remnants of Tropical Cyclone Fred may move into the area early next week. Altogether, an increasing threat of localized flash flooding is expected over the coming days, especially in areas that receive multiple rounds of heavy rainfall. .SPOTTER INFORMATION STATEMENT... None. Wimberley
In the hours before
Special weather statement, Aug 12, 1:34 PM EDT, 1 hour 14 minutes before
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</html>Special weather statement, Aug 12, 2:46 PM EDT, 2 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
246 PM EDT Thu Aug 12 2021
NCZ033-501-121930-
Caldwell Mountains NC-Avery NC-
246 PM EDT Thu Aug 12 2021
...A CLUSTER OF THUNDERSTORMS WILL IMPACT NORTHWESTERN CALDWELL AND
SOUTHEASTERN AVERY COUNTIES UNTIL 330 PM EDT...
At 246 PM EDT, Doppler radar indicated a cluster of thunderstorms
along a line extending from 10 miles south of Deep Gap to 8 miles
southwest of Blowing Rock, and moving northeast at 5 mph.
Locations to be impacted include...
Blowing Rock In Caldwell County, Grandfather Mountain State Park,
B.R. Parkway-Linville Falls To Grandfather, Edgemont, Globe,
Patterson and Upton.
Very heavy rainfall rates up to 2 inches per hour will be possible in
these 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 3612 8155 3610 8152 3610 8150 3609 8147
3609 8145 3607 8144 3608 8142 3607 8141
3598 8157 3596 8180 3598 8187 3611 8181
3612 8172
TIME...MOT...LOC 1846Z 246DEG 5KT 3609 8150 3603 8176
TDPSpecial weather statement, Aug 12, 2:48 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
248 PM EDT Thu Aug 12 2021
NCZ064-121915-
Transylvania NC-
248 PM EDT Thu Aug 12 2021
...A strong thunderstorm will impact portions of central Transylvania
County through 315 PM EDT...
At 248 PM EDT, Doppler radar was tracking a strong thunderstorm 5
miles west of Brevard, or 4 miles southwest of Looking Glass. This
storm was nearly stationary.
HAZARD...Winds in excess of 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Brevard, Rosman, Graveyard Fields, Looking Glass, Dupont State
Forest, Balsam Grove, Connestee, Cedar Mountain and Penrose.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3541 8274 3516 8261 3511 8286 3525 8293
3529 8292 3531 8288 3532 8285 3532 8283
3533 8282 3534 8282 3535 8280 3538 8279
TIME...MOT...LOC 1848Z 246DEG 4KT 3523 8282
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
TDPThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 8:09 PM EDT | Special Weather Statement | GSP | Graham | 36 min |
| Aug 11, 8:27 PM EDT | Flash Flood Warning | GSP | Mecklenburg | 3 hr |
| Aug 12, 1:34 PM EDT | Special Weather Statement | GSP | Jackson | 26 min |
| Aug 12, 2:46 PM EDT | Special Weather Statement | GSP | Caldwell | 44 min |
| Aug 12, 3:23 PM EDT | Special Weather Statement | GSP | Transylvania | 37 min |
| Aug 12, 3:45 PM EDT | Special Weather Statement | GSP | Caldwell | 30 min |
| Aug 12, 3:47 PM EDT | Special Weather Statement | GSP | Alexander | 28 min |
| Aug 12, 4:10 PM EDT | Severe Thunderstorm Warning | GSP | Alexander, Burke, Caldwell, Catawba | 50 min |
| Aug 12, 4:13 PM EDT | Special Weather Statement | GSP | Iredell | 32 min |
| Aug 12, 4:26 PM EDT | Special Weather Statement | GSP | Rutherford | 34 min |
| Aug 12, 4:55 PM EDT | Special Weather Statement | GSP | Rowan | 35 min |
| Aug 12, 5:06 PM EDT | Severe Thunderstorm Warning | GSP | Iredell, Rowan | 23 min |
| Aug 12, 5:18 PM EDT | Special Weather Statement | GSP | Burke | 27 min |
| Aug 12, 5:30 PM EDT | Special Weather Statement | GSP | Davie, Rowan | 30 min |
| Aug 12, 6:12 PM EDT | Special Weather Statement | GSP | Polk | 33 min |
| Aug 12, 4:35 PM EDT | Special Weather Statement | GSP | Pickens | 25 min |
| Aug 12, 4:57 PM EDT | Special Weather Statement | GSP | Greenville | 33 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.