Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 66, NWS Greenville-Spartanburg, SC

July 12, 20216 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 12, 2021, 11:32 PM EDT for 6 counties in North Carolina. It was in force for 43 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
Jul 12, 2021, 11:32 PM EDT (03:32 UTC)
Expired
Jul 13, 2021, 12:15 AM EDT
In force
43 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Buncombe County, NC, Henderson County, NC, McDowell County, NC, Polk County, NC, Rutherford County, NC, Yancey County, NC

The radar

The Greer radar (KGSP), 69 km from the middle of the area, began a volume at 03:33 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 00:00Z, 3.5 hours before the alert went out and 213 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 00:00Z on 2021-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1172 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 00:00Z on 2021-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.193958Sfc1 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
1172 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1462 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
48 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

844 
WUUS52 KGSP 130332
SVRGSP
NCC021-089-111-149-161-199-130415-
/O.NEW.KGSP.SV.W.0066.210713T0332Z-210713T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
1132 PM EDT Mon Jul 12 2021

The National Weather Service in Greenville-Spartanburg has issued a

* Severe Thunderstorm Warning for...
  Southwestern McDowell County in western North Carolina...
  Northwestern Rutherford County in western North Carolina...
  Northeastern Henderson County in western North Carolina...
  Northwestern Polk County in western North Carolina...
  Southeastern Buncombe County in western North Carolina...
  Southeastern Yancey County in western North Carolina...

* Until 1215 AM EDT.

* At 1132 PM EDT, a severe thunderstorm was located 11 miles north of
  Columbus, or near Lake Lure, moving north at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and power lines.

* Locations impacted include...
  Marion, Lake Lure, Old Fort, Chimney Rock Village, Chimney Rock
  State Park, Bat Cave, B.R. Parkway-Craggy To Little Switzerland,
  Pleasant Gardens, Lake Adger and Shingle Hollow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Scattered trees and power lines will be blown down in the warned
area. Seek shelter inside an interior room.

This storm is also producing extremely heavy rainfall. Flooding of
drainage ditches and low lying areas may occur. Small streams will
rise rapidly. Do not drive through areas where water is flowing over
the road.

Please report damaging winds, hail, or flooding to the National
Weather Service Greenville-Spartanburg 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 3530 8211 3536 8234 3580 8225 3574 8193
TIME...MOT...LOC 0332Z 194DEG 22KT 3542 8221 

HAIL...<.75IN
WIND...60MPH
 
$$

HG
3 follow-up statements
091 
WWUS52 KGSP 130345
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
1145 PM EDT Mon Jul 12 2021

NCC089-149-130354-
/O.CAN.KGSP.SV.W.0066.000000T0000Z-210713T0415Z/
Henderson NC-Polk NC-
1145 PM EDT Mon Jul 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HENDERSON AND
NORTHWESTERN POLK COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
Henderson and Polk Counties. Therefore, the warning for these 
areas has been cancelled.

LAT...LON 3574 8193 3536 8209 3540 8213 3541 8216
      3541 8217 3540 8218 3540 8225 3539 8226
      3544 8228 3547 8227 3549 8231 3580 8225
TIME...MOT...LOC 0344Z 194DEG 22KT 3550 8219 

$$

NCC021-111-161-199-130415-
/O.CON.KGSP.SV.W.0066.000000T0000Z-210713T0415Z/
McDowell NC-Rutherford NC-Buncombe NC-Yancey NC-
1145 PM EDT Mon Jul 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR SOUTHWESTERN MCDOWELL...NORTHWESTERN RUTHERFORD...SOUTHEASTERN
BUNCOMBE AND SOUTHEASTERN YANCEY COUNTIES...

At 1144 PM EDT, a severe thunderstorm was located 15 miles northwest
of Rutherfordton, or 4 miles north of Lake Lure, moving north at 25
mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Marion, Lake Lure, Old Fort, Chimney Rock Village, Chimney Rock 
State Park, Blue Ridge Parkway-Craggy To Little Switzerland, 
Pleasant Gardens, Shingle Hollow, Sugar Hill and Busick.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Scattered trees and power lines will be blown down in the warned
area. Seek shelter inside an interior room.

This storms is also producing extremely heavy rainfall. Flooding of
drainage ditches and low lying areas may occur. Small streams will
rise rapidly. Do not drive through areas where water is flowing over
the road.

Please report damaging winds, hail, or flooding to the National
Weather Service Greenville-Spartanburg 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 8193 3536 8209 3540 8213 3541 8216
      3541 8217 3540 8218 3540 8225 3539 8226
      3544 8228 3547 8227 3549 8231 3580 8225
TIME...MOT...LOC 0344Z 194DEG 22KT 3550 8219 

HAIL...<.75IN
WIND...60MPH
 
$$

HG
342 
WWUS52 KGSP 130400
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
1200 AM EDT Tue Jul 13 2021

NCC021-161-130409-
/O.CAN.KGSP.SV.W.0066.000000T0000Z-210713T0415Z/
Rutherford NC-Buncombe NC-
1200 AM EDT Tue Jul 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN RUTHERFORD AND
SOUTHEASTERN BUNCOMBE COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
Buncombe and Rutherford Counties. Therefore, the warning has been 
cancelled for these areas.

LAT...LON 3574 8193 3557 8200 3554 8202 3553 8208
      3556 8226 3559 8229 3561 8228 3562 8227
      3563 8227 3564 8228 3565 8228 3580 8225
TIME...MOT...LOC 0359Z 193DEG 23KT 3564 8215 

$$

NCC111-199-130415-
/O.CON.KGSP.SV.W.0066.000000T0000Z-210713T0415Z/
McDowell NC-Yancey NC-
1200 AM EDT Tue Jul 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR SOUTHWESTERN MCDOWELL AND SOUTHEASTERN YANCEY COUNTIES...

At 1159 PM EDT, a severe thunderstorm was located 8 miles west of
Marion, or near Old Fort, moving north at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Marion, Old Fort, Blue Ridge Parkway-Craggy To Little Switzerland, 
Sugar Hill, Busick, Pleasant Gardens, Glenwood, Nebo and Lake James.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Scattered trees and power lines will be blown down in the warned
area. Seek shelter inside an interior room.

This storms is also producing extremely heavy rainfall. Flooding of
drainage ditches and low lying areas may occur. Small streams will
rise rapidly. Do not drive through areas where water is flowing over
the road.

Please report damaging winds, hail, or flooding to the National
Weather Service Greenville-Spartanburg 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 8193 3557 8200 3554 8202 3553 8208
      3556 8226 3559 8229 3561 8228 3562 8227
      3563 8227 3564 8228 3565 8228 3580 8225
TIME...MOT...LOC 0359Z 193DEG 23KT 3564 8215 

HAIL...<.75IN
WIND...60MPH
 
$$

HG
303 
WWUS52 KGSP 130410
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
1210 AM EDT Tue Jul 13 2021

NCC111-199-130420-
/O.EXP.KGSP.SV.W.0066.000000T0000Z-210713T0415Z/
McDowell NC-Yancey NC-
1210 AM EDT Tue Jul 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MCDOWELL AND
SOUTHEASTERN YANCEY COUNTIES WILL EXPIRE AT 1215 AM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However, gusty 
winds to 35 mph are still possible in the area through 1230 am 
EDT.

LAT...LON 3574 8193 3557 8200 3554 8202 3553 8208
      3556 8226 3559 8229 3561 8228 3562 8227
      3563 8227 3564 8228 3565 8228 3580 8225
TIME...MOT...LOC 0410Z 195DEG 22KT 3568 8212 

$$

HG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 12, 10:59 PM EDTSpecial Weather StatementGSPHenderson, Polk31 min
Jul 12, 11:20 PM EDTSpecial Weather StatementGSPMcDowell, Rutherford40 min
Jul 12, 11:41 PM EDTSpecial Weather StatementGSPDavie, Rowan34 min
Jul 12, 11:51 PM EDTSpecial Weather StatementGSPAvery, Burke, Caldwell, McDowell39 min
Jul 13, 12:22 AM EDTSpecial Weather StatementGSPAvery, Caldwell, Mitchell38 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.