Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 118, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 11, 2021, 6:08 PM EDT for Mecklenburg County, North Carolina. It was in force for 10 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, 6:08 PM EDT (22:08 UTC)
- Expired
- Aug 11, 2021, 6:18 PM EDT
- In force
- 10 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Mecklenburg County, NC
The radar
The Greer radar (KGSP), 141 km from the middle of the area, began a volume at 22:07 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, 10.1 hours before the alert went out and 119 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.
280
WUUS52 KGSP 112208
SVRGSP
NCC119-112300-
/O.NEW.KGSP.SV.W.0118.210811T2208Z-210811T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
608 PM EDT Wed Aug 11 2021
The National Weather Service in Greenville-Spartanburg has issued a
* Severe Thunderstorm Warning for...
East central Mecklenburg County in the Piedmont of North
Carolina...
* Until 700 PM EDT.
* At 608 PM EDT, a severe thunderstorm was located 6 miles east of
Uptown Charlotte, or near Reedy Creek Park, moving southeast at 5
mph.
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...
East Charlotte, Hidden Valley, Reedy Creek Park, University City
and Northeast Charlotte.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
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 3528 8080 3531 8072 3523 8063 3518 8077
TIME...MOT...LOC 2208Z 330DEG 5KT 3525 8073
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
KRENTZ1 follow-up statement
514
WWUS52 KGSP 112218
SVSGSP
Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
618 PM EDT Wed Aug 11 2021
NCC119-112228-
/O.CAN.KGSP.SV.W.0118.000000T0000Z-210811T2300Z/
Mecklenburg NC-
618 PM EDT Wed Aug 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MECKLENBURG
COUNTY IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.
LAT...LON 3528 8080 3531 8072 3523 8063 3518 8077
TIME...MOT...LOC 2212Z 330DEG 5KT 3524 8072
$$
KRENTZWhat 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, 3 hours 11 minutes earlier.
Area forecast discussion, Aug 11, 2:57 PM EDT, 3 hours 11 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 PM EDT, 1 hour 57 minutes before
Hazardous Weather Outlook National Weather Service Greenville-Spartanburg SC 411 PM 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>014-019-122015- 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 PM 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...Tonight. Scattered thunderstorms will continue this afternoon into this evening across portions of the forecast area. Some of these storms could become strong to severe. Main impacts are cloud-to-ground lightning, brief damaging wind gusts, and heavy downpours which may lead to localized flash flooding. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... None.
In the hours before
Local storm report, Aug 11, 5:30 PM EDT, 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
530 PM EDT WED AUG 11 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0411 PM TSTM WND DMG 3 SSW UNION GROVE 35.99N 80.87W
08/11/2021 IREDELL NC EMERGENCY MNGR
EMERGENCY MNGR REPORTED TREES DOWN ON TRUMPET BRANCH
RD.
&&Special weather statement, Aug 11, 5:33 PM EDT, 35 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
533 PM EDT Wed Aug 11 2021
GAZ028-029-SCZ010-112200-
Elbert GA-Hart GA-Anderson SC-
533 PM EDT Wed Aug 11 2021
...A CLUSTER OF THUNDERSTORMS WITH INTENSE LIGHTNING WILL IMPACT
NORTH CENTRAL ELBERT...SOUTHEASTERN HART AND SOUTHEASTERN ANDERSON
COUNTIES UNTIL 600 PM EDT...
At 533 PM EDT, Doppler radar indicated the leading edge of a cluster
of thunderstorms with intense lightning along a line extending from
11 miles east of Anderson to 9 miles northeast of Elberton, and
moving south at 5 mph.
Locations to be impacted include...
Anderson, Homeland Park, Belton, Honea Path, Iva, Starr, Lake
Russell, Rock Branch, Nuberg and Broadway Lake.
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 3414 8282 3428 8298 3457 8252 3446 8236
3421 8274 3420 8274
TIME...MOT...LOC 2133Z 347DEG 5KT 3448 8246 3423 8279
TDPSpecial weather statement, Aug 11, 5:42 PM EDT, 26 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
542 PM EDT Wed Aug 11 2021
SCZ007-008-013-112215-
Cherokee SC-Union SC-Spartanburg SC-
542 PM EDT Wed Aug 11 2021
...A strong thunderstorm will impact portions of east central
Spartanburg, southwestern Cherokee and northwestern Union Counties
through 615 PM EDT...
At 541 PM EDT, Doppler radar was tracking a strong thunderstorm 11
miles southeast of Spartanburg, or near Pacolet. 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...
Pacolet, Jonesville, Pacolet Mills, Croft State Park and Thicketty.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
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 3472 8177 3488 8189 3503 8174 3480 8155
TIME...MOT...LOC 2141Z 236DEG 2KT 3485 8177
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
TDPSpecial weather statement, Aug 11, 5:46 PM EDT, 22 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
546 PM EDT Wed Aug 11 2021
NCZ071-112215-
Mecklenburg NC-
546 PM EDT Wed Aug 11 2021
...A strong thunderstorm will impact portions of southeastern
Mecklenburg County through 615 PM EDT...
At 546 PM EDT, Doppler radar was tracking a strong thunderstorm 10
miles southeast of Uptown Charlotte, or near Mint Hill. This storm
was nearly stationary.
HAZARD...Wind gusts up to 50 mph and half inch 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...
Matthews, Mint Hill, Stallings and East Charlotte.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3513 8064 3509 8072 3517 8078 3524 8064
3519 8057
TIME...MOT...LOC 2146Z 338DEG 3KT 3516 8068
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
KRENTZSpecial weather statement, Aug 11, 5:57 PM EDT, 11 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
557 PM EDT Wed Aug 11 2021
NCZ071-112230-
Mecklenburg NC-
557 PM EDT Wed Aug 11 2021
...A strong thunderstorm will impact portions of central Mecklenburg
County through 630 PM EDT...
At 557 PM EDT, Doppler radar was tracking a strong thunderstorm near
Uptown Charlotte, or near The Plaza. This storm was nearly
stationary.
HAZARD...Wind gusts up to 50 mph and half inch 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...
Uptown Charlotte, East Charlotte, The Plaza, Hidden Valley, Freedom
Park, Central Charlotte and Northeast Charlotte.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3517 8084 3525 8086 3529 8075 3521 8070
TIME...MOT...LOC 2157Z 254DEG 1KT 3524 8078
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
KRENTZLocal storm report, Aug 11, 6:03 PM EDT, 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
603 PM EDT WED AUG 11 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0549 PM TSTM WND DMG MATTHEWS 35.12N 80.72W
08/11/2021 MECKLENBURG NC LAW ENFORCEMENT
LAW ENFORCEMENT REPORTED LARGE TREE LIMB DOWN ON
PLEASANT PLAINS RD IN MATTHEWS.
&&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, 4:03 PM EDT | Severe Thunderstorm Warning | GSP | Burke, Cleveland, Lincoln, Rutherford | 42 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, 6:10 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.