Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 105, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 11, 2021, 4:03 PM EDT for 4 counties in North Carolina. It was in force for 42 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 11, 2021, 4:03 PM EDT (20:03 UTC)
- Expired
- Aug 11, 2021, 4:45 PM EDT
- In force
- 42 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Burke County, NC, Cleveland County, NC, Lincoln County, NC, Rutherford County, NC
The radar
The Greer radar (KGSP), 96 km from the middle of the area, began a volume at 20:03 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.1 hours before the alert went out and 160 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
- 653 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 1352 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- -21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
809
WUUS52 KGSP 112003
SVRGSP
NCC023-045-109-161-112045-
/O.NEW.KGSP.SV.W.0105.210811T2003Z-210811T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
403 PM EDT Wed Aug 11 2021
The National Weather Service in Greenville-Spartanburg has issued a
* Severe Thunderstorm Warning for...
Eastern Rutherford County in western North Carolina...
Northwestern Lincoln County in the Piedmont of North Carolina...
Northwestern Cleveland County in the Piedmont of North Carolina...
South central Burke County in western North Carolina...
* Until 445 PM EDT.
* At 403 PM EDT, a severe thunderstorm was located 14 miles south of
Morganton, or near Casar, and is nearly stationary.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor hail damage to vehicles is expected. Expect wind
damage to trees and power lines.
* Locations impacted include...
Belwood, Lawndale, Fallston, Polkville, Casar, Kingstown, Pleasant
Grove and South Mountains State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Brief damaging winds will blow down trees and power lines over small
areas. A brief period of large hail is also possible. Seek shelter
inside an interior room.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
minor flooding. Do not drive your vehicle through flooded roadways.
Please report damaging winds, hail, or flooding to the National
Weather Service by calling toll free, 1, 800, 2 6 7, 8 1 0 1, or by
posting on our Facebook page, or Tweet it using hashtag nwsgsp. Your
message should describe the event and the specific location where it
occurred.
&&
LAT...LON 3560 8151 3557 8153 3557 8147 3550 8137
3533 8166 3555 8176 3564 8158
TIME...MOT...LOC 2003Z 324DEG 4KT 3553 8164
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
CAC1 follow-up statement
572
WWUS52 KGSP 112038
SVSGSP
Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
438 PM EDT Wed Aug 11 2021
NCC023-045-109-161-112047-
/O.EXP.KGSP.SV.W.0105.000000T0000Z-210811T2045Z/
Rutherford NC-Lincoln NC-Cleveland NC-Burke NC-
438 PM EDT Wed Aug 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN RUTHERFORD...
NORTHWESTERN LINCOLN...NORTHWESTERN CLEVELAND AND SOUTH CENTRAL BURKE
COUNTIES WILL EXPIRE AT 445 PM EDT...
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning will be allowed to expire.
LAT...LON 3560 8151 3557 8153 3557 8147 3550 8137
3533 8166 3555 8176 3564 8158
TIME...MOT...LOC 2037Z 324DEG 4KT 3551 8162
$$
WJMWhat forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Aug 11, 2:57 PM EDT, 1 hour 6 minutes earlier.
Area forecast discussion, Aug 11, 2:57 PM EDT, 1 hour 6 minutes before
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
257 PM EDT Wed Aug 11 2021
.SYNOPSIS...
Abundant moisture will wrap around Atlantic high pressure and into
our area through Friday, bringing daily shower and thunderstorm
chances. A cold front will stall over the area this weekend, and the
remnants of Tropical Storm Fred may arrive early next week, possibly
resulting in periods of heavy rainfall Saturday through Monday.
&&
.NEAR TERM /THROUGH THURSDAY/...
As of 240 PM EDT Wednesday: We've already seen some robust cells
fire up over the higher terrain and foothills over the past few
hours, with coverage expected to increase thru the late afternoon
and into the evening with similar (or slightly greater) overall
coverage compared to yesterday. Otherwise, expect little change
in the overall environment today, with the sub-tropical ridge
firmly over the Southeast and an associated Bermuda High sfc
pattern. So expect another hot and muggy day, with scattered
to numerous aftn showers and thunderstorms. A few storms will
likely pulse up to severe levels, with the main threat being
damaging wind gusts. There will also continue to be a non-zero
flash flood threat, given the high PWATs and slow storm motions
expected. Tonight, convection should wane during the early evening
hours, leaving plenty of mid and high clouds that gradually thin
out overnight. Mountain valley fog will likely develop, with some
of it possibly being dense. Lows will be slightly above normal.
&&
.SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY/...
As of 215 PM Wed: Mid level ridging will remain in place across the
region Thursday night through Saturday. This will keep temperatures
slightly above normal with highs in the lower to middle 90s in the
Piedmont and mid to upper 80s in the mountain valleys. Scattered
showers and thunderstorms are expected mainly during the afternoon
and evening hours both Friday and Saturday.
&&
.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
As of 215 PM Wed: A seasonably weak cold front will approach the
area from the north on Sunday. This will lead to an increased focus
for showers and thunderstorms on Sunday so pops will be fairly high
especially in the mountains. Based on the latest NHC track for Fred,
expect increased deep moisture to overspread the area on Monday and
Tuesday which may lead to some heavy rainfall especially in the
favored upslope areas. If the forecast for Fred changes, that would
lower the chance for heavy rainfall.
With the increased cloud cover and rainfall from Sunday into early
next week, expect highs to be in the 80s except for the higher
mountains.
&&
.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
At KCLT and elsewhere: Outside of the typical, diurnally-driven
summertime convection, I expect VFR conditions to prevail at most
sites thru the taf period. We've already seen some fairly robust
cells fire up over the higher terrain over the past couple of hours,
and I expect the coverage to increase thru the afternoon and into
the evening with similar (or slightly greater) overall coverage
compared to yesterday. Winds should remain generally light out of
the SW thru the period, except in the vicinity of thunderstorms.
Another round of mountain valley fog and patchy fog elsewhere is
expected again overnight and tomorrow morning, as winds remain light
and skies gradually clear out.
Outlook: Diurnal convection remains in the fcst for the rest of the
week. Fog and low stratus will be possible each morning, especially
over mountain valleys and areas primed by rainfall from the previous
evening.
Confidence Table...
19-01Z 01-07Z 07-13Z 13-18Z
KCLT High 100% High 100% High 100% High 100%
KGSP High 100% High 100% High 100% High 100%
KAVL High 100% High 95% Low 51% Med 77%
KHKY High 100% High 100% High 80% High 95%
KGMU High 100% High 100% High 100% High 100%
KAND High 100% High 100% High 95% High 95%
The percentage reflects the number of guidance members agreeing
with the scheduled TAF issuance flight rule category. Complete hourly
experimental aviation forecast consistency tables are available at
the following link:
www.weather.gov/gsp/aviation
&&
.GSP WATCHES/WARNINGS/ADVISORIES...
GA...None.
NC...None.
SC...None.
&&
SYNOPSIS...SCW
NEAR TERM...JPT
SHORT TERM...SCW
LONG TERM...SCW
AVIATION...JPTHazardous weather outlook, Aug 11, 4:11 AM EDT, 11 hours 52 minutes before
Hazardous Weather Outlook National Weather Service Greenville-Spartanburg SC 411 AM EDT Wed Aug 11 2021 GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065- 068>072-082-501>510-SCZ001>014-019-120400- Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Avery-Alexander- Iredell-Davie-Madison-Yancey-Mitchell-Swain-Haywood-Buncombe-Catawba- Rowan-Graham-Northern Jackson-Macon-Southern Jackson-Transylvania- Henderson-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-Oconee Mountains- Pickens Mountains-Greenville Mountains-Greater Oconee- Greater Pickens-Greater Greenville-Spartanburg-Cherokee-York- Anderson-Abbeville-Laurens-Union SC-Chester-Greenwood- 411 AM EDT Wed Aug 11 2021 This Hazardous Weather Outlook is for northeast Georgia, piedmont North Carolina, western North Carolina and 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...Thursday through Tuesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... None. Wimberley
In the hours before
Special weather statement, Aug 11, 2:51 PM EDT, 1 hour 12 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
251 PM EDT Wed Aug 11 2021
NCZ502-504-111915-
Greater Burke NC-Greater Caldwell NC-
251 PM EDT Wed Aug 11 2021
...A strong thunderstorm will impact portions of southeastern
Caldwell and central Burke Counties through 315 PM EDT...
At 251 PM EDT, Doppler radar was tracking a strong thunderstorm near
Morganton, moving east at 15 mph.
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...
Morganton, Lenoir, Sawmills, Granite Falls, Valdese, Hudson, Icard,
Cajah's Mountain, Drexel and Hildebran.
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.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3570 8141 3563 8148 3565 8173 3583 8175
3590 8144
TIME...MOT...LOC 1851Z 264DEG 11KT 3575 8166
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
TDPSpecial weather statement, Aug 11, 3:24 PM EDT, 39 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
324 PM EDT Wed Aug 11 2021
NCZ505-507-508-112000-
McDowell Mountains NC-Greater Rutherford NC-Rutherford Mountains NC-
324 PM EDT Wed Aug 11 2021
...A strong thunderstorm will impact portions of south central
McDowell and northwestern Rutherford Counties through 400 PM EDT...
At 324 PM EDT, Doppler radar was tracking a strong thunderstorm 14
miles southwest of Marion, or 5 miles northeast of Lake Lure. 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...
Lake Lure, Chimney Rock Village, Chimney Rock State Park, Bat Cave,
Shingle Hollow and Green Hill.
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.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3556 8206 3554 8208 3554 8202 3536 8201
3537 8211 3540 8213 3541 8216 3540 8227
3545 8228 3547 8226 3546 8225 3550 8222
3552 8223 3553 8217 3554 8220 3556 8218
TIME...MOT...LOC 1924Z 008DEG 3KT 3551 8215
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
TDPSpecial weather statement, Aug 11, 3:28 PM EDT, 35 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
328 PM EDT Wed Aug 11 2021
SCZ006-112000-
Greater Greenville SC-
328 PM EDT Wed Aug 11 2021
...A strong thunderstorm will impact portions of southeastern
Greenville County through 400 PM EDT...
At 327 PM EDT, Doppler radar was tracking a strong thunderstorm 4
miles southeast of Greenville Downtown, or near Greenville Eastside,
moving south at 5 mph.
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...
Greenville Downtown, Greenville Eastside, West Greenville, Mauldin,
Simpsonville, Five Forks, Donaldson Center, GSP Airport, Fountain Inn
and Welcome.
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.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3485 8245 3491 8224 3489 8222 3488 8223
3485 8223 3483 8219 3480 8217 3480 8216
3479 8216 3478 8215 3471 8218 3464 8241
TIME...MOT...LOC 1927Z 340DEG 5KT 3482 8232
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
TDPSpecial weather statement, Aug 11, 3:32 PM EDT, 31 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
332 PM EDT Wed Aug 11 2021
SCZ005-010-112000-
Greater Pickens SC-Anderson SC-
332 PM EDT Wed Aug 11 2021
...A strong thunderstorm will impact portions of north central
Anderson and east central Pickens Counties through 400 PM EDT...
At 332 PM EDT, Doppler radar was tracking a strong thunderstorm near
Easley, moving south at 5 mph.
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...
Easley, Powdersville and Piedmont.
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.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3471 8260 3486 8262 3490 8250 3488 8249
3484 8249 3484 8248 3483 8249 3483 8248
3482 8249 3477 8245 3475 8246 3474 8246
TIME...MOT...LOC 1932Z 344DEG 5KT 3483 8254
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
TDPSpecial weather statement, Aug 11, 3:37 PM EDT, 26 minutes before
Special Weather Statement National Weather Service Greenville-Spartanburg SC 337 PM EDT Wed Aug 11 2021 SCZ011-012-019-112000- Laurens SC-Abbeville SC-Greenwood SC- 337 PM EDT Wed Aug 11 2021 ...A CLUSTER OF THUNDERSTORMS WITH INTENSE LIGHTNING WILL IMPACT SOUTHWESTERN LAURENS...EAST CENTRAL ABBEVILLE AND NORTHWESTERN GREENWOOD COUNTIES UNTIL 400 PM EDT... At 336 PM EDT, Doppler radar indicated the leading edge of a cluster of thunderstorms with intense lightning along a line extending from 10 miles north of Greenwood to 13 miles northeast of Abbeville, and moving southwest at 5 mph. Locations to be impacted include... Cokesbury, Waterloo, Hodges, Shoals Junction, Ware Shoals, Cross Hill, Lake Greenwood, Coronaca and Mountville. In addition to intense lightning, 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. Frequent lightning is occurring with these storms. If outdoors, try to get indoors or into a hard topped vehicle. Otherwise, stay away from open areas and isolated high objects such as trees. When indoors, stay away from windows and doors and avoid using wired electronic devices. Do not take a shower or bath. Try to unplug unnecessary appliances before the storms approach. && LAT...LON 3425 8203 3429 8243 3439 8226 3437 8195 TIME...MOT...LOC 1936Z 051DEG 4KT 3434 8210 3435 8224 TDP
Local storm report, Aug 11, 3:59 PM EDT, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
359 PM EDT WED AUG 11 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0351 PM HAIL CARNESVILLE 34.37N 83.23W
08/11/2021 E1.00 INCH FRANKLIN GA CO-OP OBSERVER
CO-OP OBSERVER REPORTED QUARTER (1.00") SIZE HAIL IN
CARNESVILLE.
&&The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 12:28 PM EDT | Special Weather Statement | GSP | Henderson | 47 min |
| Aug 11, 1:47 PM EDT | Special Weather Statement | GSP | McDowell | 28 min |
| Aug 11, 2:51 PM EDT | Special Weather Statement | GSP | Burke | 24 min |
| Aug 11, 3:01 PM EDT | Severe Thunderstorm Warning | GSP | Burke, Catawba | 44 min |
| Aug 11, 3:24 PM EDT | Special Weather Statement | GSP | Polk | 36 min |
| Aug 11, 3:51 PM EDT | Severe Thunderstorm Warning | GSP | Buncombe | 39 min |
| Aug 11, 3:53 PM EDT | Severe Thunderstorm Warning | GSP | Iredell | 52 min |
| Aug 11, 4:01 PM EDT | Severe Thunderstorm Warning | GSP | Polk | 44 min |
| Aug 11, 4:24 PM EDT | Special Weather Statement | GSP | Rutherford | 36 min |
| Aug 11, 4:31 PM EDT | Special Weather Statement | GSP | Iredell | 29 min |
| Aug 11, 4:40 PM EDT | Severe Thunderstorm Warning | GSP | Catawba, Iredell | 50 min |
| Aug 11, 4:54 PM EDT | Special Weather Statement | GSP | Rutherford | 36 min |
| Aug 11, 5:02 PM EDT | Special Weather Statement | GSP | Iredell | 28 min |
| Aug 11, 5:08 PM EDT | Severe Thunderstorm Warning | GSP | Iredell, Rowan | 34 min |
| Aug 11, 5:17 PM EDT | Severe Thunderstorm Warning | GSP | Cleveland | 43 min |
| Aug 11, 5:34 PM EDT | Severe Thunderstorm Warning | GSP | Union | 27 min |
| Aug 11, 5:46 PM EDT | Special Weather Statement | GSP | Mecklenburg | 29 min |
| Aug 11, 5:57 PM EDT | Special Weather Statement | GSP | Mecklenburg | 33 min |
| Aug 11, 6:08 PM EDT | Severe Thunderstorm Warning | GSP | Mecklenburg | 10 min |
| Aug 11, 6:10 PM EDT | Special Weather Statement | GSP | Gaston | 35 min |
| Aug 11, 6:16 PM EDT | Special Weather Statement | GSP | Cabarrus | 29 min |
| Aug 11, 6:29 PM EDT | Severe Thunderstorm Warning | GSP | Cabarrus | 20 min |
| Aug 11, 6:47 PM EDT | Special Weather Statement | GSP | Cabarrus | 28 min |
| Aug 11, 6:59 PM EDT | Areal Flood Advisory | GSP | Cabarrus, Rowan | 2 hr |
| Aug 11, 7:28 PM EDT | Special Weather Statement | GSP | Mecklenburg | 32 min |
| Aug 11, 7:31 PM EDT | Severe Thunderstorm Warning | GSP | Mecklenburg | 44 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2021Every severe thunderstorm 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.