Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 123, NWS Greenville-Spartanburg, SC

August 12, 2021Iredell County, Rowan County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 12, 2021, 5:06 PM EDT for Iredell County, Rowan County, North Carolina. It was in force for 23 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 12, 2021, 5:06 PM EDT (21:06 UTC)
Expired
Aug 12, 2021, 5:29 PM EDT
In force
23 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Iredell County, NC, Rowan County, NC

The radar

The Roanoke radar (KFCX), 158 km from the middle of the area, began a volume at 21:10 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.

What was reported inside it

TimeReportWhereRemark
Aug 12, 5:10 PM EDTTSTM WND DMG1 Ne Mount Ulla, NC911 CALL CENTER REPORTED TREE DOWN ON UMBERGER RD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 4 minutes after it went out.

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, 9.1 hours before the alert went out and 89 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.

Skew-T log-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2021-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1015 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2021-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -42 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1015 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
1048 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
-42 m²/s²
0-3 km storm-relative helicity
-15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

457 
WUUS52 KGSP 122106
SVRGSP
NCC097-159-122145-
/O.NEW.KGSP.SV.W.0123.210812T2106Z-210812T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
506 PM EDT Thu Aug 12 2021

The National Weather Service in Greenville-Spartanburg has issued a

* Severe Thunderstorm Warning for...
  Southeastern Iredell County in the Piedmont of North Carolina...
  Southwestern Rowan County in the Piedmont of North Carolina...

* Until 545 PM EDT.

* At 505 PM EDT, a severe thunderstorm was located 12 miles southeast
  of Statesville, or 5 miles southwest of Cleveland, 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...
  Mooresville, China Grove, Landis, Cleveland, Mount Ulla, Piedmont
  Research Station and Enochville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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.

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 3574 8081 3573 8060 3552 8056 3554 8089
TIME...MOT...LOC 2105Z 004DEG 3KT 3567 8072 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

TDP
1 follow-up statement
033 
WWUS52 KGSP 122129
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
529 PM EDT Thu Aug 12 2021

NCC097-159-122138-
/O.CAN.KGSP.SV.W.0123.000000T0000Z-210812T2145Z/
Iredell NC-Rowan NC-
529 PM EDT Thu Aug 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN IREDELL AND
SOUTHWESTERN ROWAN COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However heavy rain, 
gusty winds, and lightning is still possible with this thunderstorm.

To report severe weather to the National Weather Service
Greenville-Spartanburg, call toll free, 1, 800, 2 6 7, 8 1 0 1, or
post 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 3574 8081 3573 8060 3552 8056 3554 8089
TIME...MOT...LOC 2126Z 004DEG 3KT 3565 8072 

$$

TDP

What 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 12, 2:50 PM EDT, 2 hours 16 minutes earlier.

Area forecast discussion, Aug 12, 2:50 PM EDT, 2 hours 16 minutes before
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
250 PM EDT Thu Aug 12 2021

.SYNOPSIS...
A stormy pattern will persist over the area into this weekend, with
scattered if not numerous showers and thunderstorms developing each
afternoon. Temperatures will remain above normal through Saturday.
Cooler but still rainier weather will arrive Sunday with a stalling
cold front, a potential weak CAD, and possibly the remnants of
Tropical Storm Fred Monday night into Tuesday.

&&

.NEAR TERM /THROUGH FRIDAY/...
As of 225 PM EDT Thursday: Expect another hot and muggy day as
the sub-tropical ridge remains dominant over the Southeast along
with a persistent Bermuda High sfc pattern. So once again, expect
another round of scattered afternoon showers and thunderstorms
across the fcst area, especially in the mountains where differential
heating on the slopes will be a reliable trigger. A few storms
will likely pulse up to severe levels again today thanks to 2000+
J/kg of SBCAPE and 500-1000 J/kg of DCAPE, with the main threat
being damaging wind gusts. The overall coverage outside of the
mountain should be less than yesterday given the slightly higher
500 mb heights and model consensus of less CAPE than last couple
days. There will also continue to be a non-zero flash flood threat,
given the high PWATs still in place and slow storm motions expected.
High temperatures will continue to run a few degrees above normal.
Tonight, should see convection wane with loss of heating, leaving
debris cloudiness into the overnight, followed by patchy fog,
especially in the mtn valleys. Lows will be a couple degrees
above normal.

&&

.SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/...
As of 130 PM EDT Thursday: Ridging over the SE CONUS will continue
to maintain a strong Bermuda high over the western Atlantic
Saturday, promoting southerly flow off the Atlantic coast and
helping PWATs jump as high as 2" across the Piedmont and Upstate.
A shortwave will swing across the region by Saturday afternoon,
promoting better synoptic forcing and steering a weak front through
the area late in the day.  This should enhance diurnal PoPs on
Saturday if the front moves through early enough - and model
consensus presently pushes the front out of the Appalachians
between 18Z and 00Z on Saturday afternoon, well-timed to take
advantage of peak afternoon heating.

With weak shear across the board, storms should struggle to develop
much organization, and even with the boundary we should be looking
at mainly pulse-type storms.  Not to say a few couldn't become
severe - if the last few days have taught us anything, it's that
the amount of instability and moisture this pattern is producing
can give us notable convection - so certainly can't rule out a
handful of severe cells.  However, the main threat at this time
will be localized flash flooding, as the environment is ripe for
moderately slow-moving, heavy rain-producing storms.

Sunday looks to be somewhat of a transitional period: behind
the front, high pressure should sweep well to our north, while
continued southerly flow off the Atlantic should drive some amount
of upglide and associated stratiform precip.  All the global models
now pick up on a least the early-stage development of a CAD event
by Sunday evening, though the GFS remains the most aggressive as
in previous runs.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
As of 230 PM EDT Thursday: The GFS, and now the ECMWF as well,
are picking up on the development of a largely in situ CAD
event by Monday.  Consequently, expecting significantly decreased
temperatures on Monday, likely well below normal, as precipitation
continues throughout Sunday night and Monday.

The arrival of Fred will dictate what happens next.  As of Tuesday
afternoon, there's still a decent amount of model spread, with
the GFS allowing Fred to fizzle and die over the Gulf Coast,
where the ECMWF and CMC depict some variation on Fred moving
through Georgia and into the western Carolinas.  The latter
scenario could bring substantial rainfall to the CWA beginning
Monday night and persisting through Tuesday; the GFS solution, by
contrast, results in drastically lower QPF totals.  Any solution
at this point will likely result in some hydro threat - as days
of widespread rainfall will have produced high stream levels and
elevated soil moisture, priming the environment for flooding.
The latest ECMWF dialed back QPF for the Blue Ridge Escarpment
from 8"+ totals to a more reasonable 4-6" storm total QPF, which
still seems a bit more reasonable.  In any case, confidence is
low in the exact track and local effects of Fred, and likely will
remain so for a least the next couple forecast packages.

&&

.AVIATION /19Z THURSDAY THROUGH TUESDAY/...
At KCLT and elsewhere: Expect another round of diurnally-driven
showers and thunderstorms this afternoon/evening, with the best
coverage still expected over the higher terrain. Overall, the
latest guidance continues to depict less coverage than yesterday,
largely due to less instability, but still enough to keep TEMPOS
and/or VCTS at all sites. Still expecting the Piedmont sites to
have a later start wrt convection compared to the last couple of
days. Whatever convection does develop should dissipate fairly
quickly this evening with skies clearing out later tonight. Winds
will be light through the period and continue to favor a SWLY
direction, except around tstms. The potential for fog and/or low
stratus will be similar again overnight and tomorrow morning,
with the best chances for restrictions over the usual mtn valleys
including KAVL.

Outlook: Diurnal convection remains in the fcst for the rest of
the week and into the weekend. Fog and low stratus will be possible
each morning, especially over mountain valleys and areas primed by
rainfall from the previous evening.

Confidence Table...

            18-24Z        00-06Z        06-12Z        12-18Z
KCLT       High 100%     High 100%     High 100%     High 100%
KGSP       High 100%     High 100%     High 100%     High 100%
KAVL       High 100%     High 100%     Med   61%     Med   77%
KHKY       High 100%     High 100%     High 100%     High 100%
KGMU       High 100%     High 100%     High 100%     High 100%
KAND       High 100%     High 100%     High 100%     High 100%

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...MPR
NEAR TERM...JPT
SHORT TERM...MPR
LONG TERM...MPR
AVIATION...JPT
Hazardous weather outlook, Aug 12, 4:12 AM EDT, 12 hours 54 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, 4:13 PM EDT, 53 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
413 PM EDT Thu Aug 12 2021

NCZ036-122045-
Iredell NC-
413 PM EDT Thu Aug 12 2021

...A strong thunderstorm will impact portions of northeastern Iredell
County through 445 PM EDT...

At 413 PM EDT, Doppler radar was tracking a strong thunderstorm 11
miles north of Statesville, or 4 miles southeast of Love Valley,
moving east 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...
Harmony, Love Valley, Union Grove, Turnersburg, Olin and Cool
Springs.

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.

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 3605 8089 3605 8076 3589 8071 3585 8071
      3583 8097 3595 8101 3596 8100 3599 8100
      3602 8102 3606 8091
TIME...MOT...LOC 2013Z 253DEG 6KT 3594 8092

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

TDP
Special weather statement, Aug 12, 4:26 PM EDT, 40 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
426 PM EDT Thu Aug 12 2021

NCZ068-508-122100-
Greater Rutherford NC-Cleveland NC-
426 PM EDT Thu Aug 12 2021

...Strong thunderstorms will impact portions of northeastern
Rutherford and northwestern Cleveland Counties through 500 PM EDT...

At 426 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from 13 miles south of Morganton to 12 miles north
of Forest City. These storms were 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...
Sunshine.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3554 8160 3544 8177 3550 8195 3559 8174
TIME...MOT...LOC 2026Z 281DEG 2KT 3554 8174 3551 8182

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

TDP
Special weather statement, Aug 12, 4:35 PM EDT, 31 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
435 PM EDT Thu Aug 12 2021

SCZ002-005-122100-
Pickens Mountains SC-Greater Pickens SC-
435 PM EDT Thu Aug 12 2021

...A strong thunderstorm will impact portions of northeastern Pickens
County through 500 PM EDT...

At 435 PM EDT, Doppler radar was tracking a strong thunderstorm 4
miles northeast of Pickens. 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...
Pickens, Table Rock State Park, Pumpkintown and Dacusville.

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 3490 8280 3505 8276 3505 8274 3506 8271
      3503 8259 3501 8259 3501 8254 3500 8254
      3498 8253 3498 8255 3497 8253 3495 8253
      3484 8260
TIME...MOT...LOC 2035Z 200DEG 3KT 3494 8267

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

TDP
Local storm report, Aug 12, 4:40 PM EDT, 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
440 PM EDT THU AUG 12 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0436 PM     TSTM WND DMG     5 SE LOVE VALLEY        35.94N 80.92W
08/12/2021                   IREDELL            NC   FIRE DEPT/RESCUE

            FIRE DEPT REPORTED TREE DOWN  ON DOBSON FARM RD
            BLOCKING THE ROAD.

&&
Special weather statement, Aug 12, 4:55 PM EDT, 11 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
455 PM EDT Thu Aug 12 2021

NCZ057-122130-
Rowan NC-
455 PM EDT Thu Aug 12 2021

...A strong thunderstorm will impact portions of southwestern Rowan
County through 530 PM EDT...

At 455 PM EDT, Doppler radar was tracking a strong thunderstorm 12
miles southeast of Statesville, or near Cleveland. 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...
Kannapolis, Landis, Cleveland, Enochville, Mount Ulla, Piedmont
Research Station and Woodleaf.

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 3551 8063 3558 8075 3568 8077 3579 8073
      3575 8049
TIME...MOT...LOC 2055Z 294DEG 3KT 3568 8070

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

TDP
Special weather statement, Aug 12, 4:57 PM EDT, 9 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
457 PM EDT Thu Aug 12 2021

SCZ006-122130-
Greater Greenville SC-
457 PM EDT Thu Aug 12 2021

...A strong thunderstorm will impact portions of central Greenville
County through 530 PM EDT...

At 457 PM EDT, Doppler radar was tracking a strong thunderstorm 5
miles north of Greenville Downtown, or over Furman University. 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...
Greenville Downtown, West Greenville, Taylors, Berea, Welcome,
Travelers Rest, Paris Mountain State Park, Cherrydale Point, Furman
University and Greenville Eastside.

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 3482 8249 3483 8248 3483 8249 3484 8248
      3484 8249 3488 8249 3491 8250 3492 8252
      3497 8253 3502 8235 3487 8223 3480 8247
TIME...MOT...LOC 2057Z 340DEG 1KT 3493 8243

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

TDP

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 11, 8:09 PM EDTSpecial Weather StatementGSPGraham36 min
Aug 11, 8:27 PM EDTFlash Flood WarningGSPMecklenburg3 hr
Aug 12, 1:34 PM EDTSpecial Weather StatementGSPJackson26 min
Aug 12, 2:46 PM EDTSpecial Weather StatementGSPCaldwell44 min
Aug 12, 2:48 PM EDTSpecial Weather StatementGSPTransylvania27 min
Aug 12, 3:23 PM EDTSpecial Weather StatementGSPTransylvania37 min
Aug 12, 3:45 PM EDTSpecial Weather StatementGSPCaldwell30 min
Aug 12, 3:47 PM EDTSpecial Weather StatementGSPAlexander28 min
Aug 12, 4:10 PM EDTSevere Thunderstorm WarningGSPAlexander, Burke, Caldwell, Catawba50 min
Aug 12, 4:13 PM EDTSpecial Weather StatementGSPIredell32 min
Aug 12, 4:26 PM EDTSpecial Weather StatementGSPRutherford34 min
Aug 12, 4:55 PM EDTSpecial Weather StatementGSPRowan35 min
Aug 12, 5:18 PM EDTSpecial Weather StatementGSPBurke27 min
Aug 12, 5:30 PM EDTSpecial Weather StatementGSPDavie, Rowan30 min
Aug 12, 6:12 PM EDTSpecial Weather StatementGSPPolk33 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.