Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 83, NWS Greenville-Spartanburg, SC

August 10, 2021Henderson County, Transylvania County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 10, 2021, 3:04 PM EDT for Henderson County, Transylvania County, North Carolina. It was in force for 29 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 10, 2021, 3:04 PM EDT (19:04 UTC)
Expired
Aug 10, 2021, 3:33 PM EDT
In force
29 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Henderson County, NC, Transylvania County, NC

The radar

The Greer radar (KGSP), 46 km from the middle of the area, began a volume at 19:05 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.1 hours before the alert went out and 263 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 2021-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1302 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 2021-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
1302 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
948 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

233 
WUUS52 KGSP 101904
SVRGSP
NCC089-175-101945-
/O.NEW.KGSP.SV.W.0083.210810T1904Z-210810T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
304 PM EDT Tue Aug 10 2021

The National Weather Service in Greenville-Spartanburg has issued a

* Severe Thunderstorm Warning for...
  Southeastern Transylvania County in western North Carolina...
  South central Henderson County in western North Carolina...

* Until 345 PM EDT.

* At 303 PM EDT, a severe thunderstorm was located 4 miles east of
  Brevard, or near Dupont State Forest, moving east 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...
  Brevard, Dupont State Forest, Little River In Transylvania County,
  Crab Creek, Cedar Mountain, Penrose and Connestee.

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 3518 8246 3517 8249 3516 8250 3517 8250
      3516 8253 3516 8255 3515 8257 3514 8261
      3513 8263 3513 8264 3512 8266 3513 8268
      3511 8269 3511 8272 3526 8277 3528 8252
TIME...MOT...LOC 1903Z 261DEG 5KT 3523 8265 

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

$$

CAC
2 follow-up statements
151 
WWUS52 KGSP 101920
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
320 PM EDT Tue Aug 10 2021

NCC089-101930-
/O.CAN.KGSP.SV.W.0083.000000T0000Z-210810T1945Z/
Henderson NC-
320 PM EDT Tue Aug 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL HENDERSON COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3526 8262 3526 8260 3519 8260 3518 8259
      3515 8267 3516 8274 3526 8277 3527 8261
TIME...MOT...LOC 1920Z 261DEG 5KT 3523 8262 

$$

NCC175-101945-
/O.CON.KGSP.SV.W.0083.000000T0000Z-210810T1945Z/
Transylvania NC-
320 PM EDT Tue Aug 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR EAST CENTRAL TRANSYLVANIA COUNTY...

At 320 PM EDT, a severe thunderstorm was located 6 miles east of
Brevard, or near Dupont State Forest, moving east 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...
Brevard, Dupont State Forest, Connestee, Little River In Transylvania
County and Penrose.

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.

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
flash 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 3526 8262 3526 8260 3519 8260 3518 8259
      3515 8267 3516 8274 3526 8277 3527 8261
TIME...MOT...LOC 1920Z 261DEG 5KT 3523 8262 

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

$$

CAC
424 
WWUS52 KGSP 101933
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
333 PM EDT Tue Aug 10 2021

NCC175-101943-
/O.CAN.KGSP.SV.W.0083.000000T0000Z-210810T1945Z/
Transylvania NC-
333 PM EDT Tue Aug 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL TRANSYLVANIA
COUNTY 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 is
still possible with this thunderstorm.

LAT...LON 3526 8262 3526 8260 3519 8260 3518 8259
      3515 8267 3516 8274 3526 8277 3527 8261
TIME...MOT...LOC 1929Z 261DEG 5KT 3523 8260 

$$

CAC

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 8:00 PM EDTSpecial Weather StatementGSPHaywood45 min
Aug 9, 8:45 PM EDTSpecial Weather StatementGSPHaywood45 min
Aug 9, 9:11 PM EDTAreal Flood AdvisoryGSPBuncombe, Haywood70 min
Aug 9, 9:19 PM EDTSpecial Weather StatementGSPMcDowell26 min
Aug 10, 1:19 PM EDTSpecial Weather StatementGSPCaldwell26 min
Aug 10, 1:46 PM EDTSpecial Weather StatementGSPCaldwell44 min
Aug 10, 2:13 PM EDTSpecial Weather StatementGSPBuncombe32 min
Aug 10, 2:22 PM EDTSevere Thunderstorm WarningGSPBurke, Caldwell28 min
Aug 10, 2:46 PM EDTSpecial Weather StatementGSPBuncombe29 min
Aug 10, 2:49 PM EDTSpecial Weather StatementGSPHenderson26 min
Aug 10, 2:58 PM EDTSpecial Weather StatementGSPGraham32 min
Aug 10, 3:11 PM EDTSpecial Weather StatementGSPMcDowell34 min
Aug 10, 3:22 PM EDTSpecial Weather StatementGSPRutherford23 min
Aug 10, 3:26 PM EDTSpecial Weather StatementGSPBurke34 min
Aug 10, 3:31 PM EDTSpecial Weather StatementGSPMcDowell29 min
Aug 10, 3:37 PM EDTSpecial Weather StatementGSPTransylvania23 min
Aug 10, 3:55 PM EDTSpecial Weather StatementGSPMcDowell35 min
Aug 10, 3:57 PM EDTSpecial Weather StatementGSPMadison33 min
Aug 10, 4:10 PM EDTSpecial Weather StatementGSPBurke35 min
Aug 10, 4:13 PM EDTSevere Thunderstorm WarningGSPBuncombe, Madison30 min
Aug 10, 4:25 PM EDTSpecial Weather StatementGSPMacon35 min
Aug 10, 4:29 PM EDTSpecial Weather StatementGSPUnion31 min
Aug 10, 4:30 PM EDTSpecial Weather StatementGSPPolk30 min
Aug 10, 4:31 PM EDTSpecial Weather StatementGSPMcDowell29 min
Aug 10, 4:45 PM EDTSevere Thunderstorm WarningGSPRutherford32 min
Aug 10, 4:50 PM EDTSpecial Weather StatementGSPPolk25 min
Aug 10, 4:52 PM EDTSpecial Weather StatementGSPTransylvania38 min
Aug 10, 4:54 PM EDTSpecial Weather StatementGSPAvery36 min
Aug 10, 4:57 PM EDTSpecial Weather StatementGSPYancey33 min
Aug 10, 5:02 PM EDTSevere Thunderstorm WarningGSPYancey28 min
Aug 10, 5:06 PM EDTSpecial Weather StatementGSPCleveland24 min
Aug 10, 5:07 PM EDTSevere Thunderstorm WarningGSPAvery, Burke, McDowell38 min
Aug 10, 5:08 PM EDTSpecial Weather StatementGSPMacon37 min
Aug 10, 5:20 PM EDTSpecial Weather StatementGSPPolk25 min
Aug 10, 5:27 PM EDTSpecial Weather StatementGSPCabarrus33 min
Aug 10, 5:37 PM EDTSpecial Weather StatementGSPJackson23 min
Aug 10, 5:52 PM EDTAreal Flood AdvisoryGSPYancey113 min
Aug 10, 6:00 PM EDTSpecial Weather StatementGSPMacon30 min
Aug 10, 6:05 PM EDTSpecial Weather StatementGSPCleveland25 min
Aug 10, 6:14 PM EDTSpecial Weather StatementGSPGraham31 min
Aug 10, 6:24 PM EDTSevere Thunderstorm WarningGSPGraham, Swain51 min
Aug 10, 6:28 PM EDTSpecial Weather StatementGSPMecklenburg32 min
Aug 10, 6:54 PM EDTSpecial Weather StatementGSPMacon51 min
Aug 10, 7:07 PM EDTSpecial Weather StatementGSPMecklenburg38 min
Aug 10, 7:47 PM EDTSevere Thunderstorm WarningGSPCabarrus, Mecklenburg24 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.