Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 78, NWS Greenville-Spartanburg, SC

July 27, 2021Burke County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 27, 2021, 7:00 PM EDT for Burke County, North Carolina. It was in force for 45 min. 2 reports 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: Jul 27, 2021, 7:00 PM EDT (23:00 UTC)
Expired: Jul 27, 2021, 7:45 PM EDT
In force: 45 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Burke County, NC

The radar

The Greer radar (KGSP), 97 km from the middle of the area, began a volume at 23:00 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

Time	Report	Where	Remark
Jul 27, 7:01 PM EDT	TSTM WND DMG	1 Nne Morganton, NC	TREE ON HOUSE.
Jul 27, 7:06 PM EDT	TSTM WND DMG	1 Sse Morganton, NC	TREE ON 3 CARS. TIME ESTIMATED FROM RADAR.

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

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.0 hours before the alert went out and 167 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 480 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 942 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

750 
WUUS52 KGSP 272300
SVRGSP
NCC023-272345-
/O.NEW.KGSP.SV.W.0078.210727T2300Z-210727T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
700 PM EDT Tue Jul 27 2021

The National Weather Service in Greenville-Spartanburg has issued a

* Severe Thunderstorm Warning for...
  South central Burke County in western North Carolina...

* Until 745 PM EDT.

* At 700 PM EDT, a severe thunderstorm was located near Morganton,
  moving south at 15 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...
  Morganton, Drexel, South Mountains State Park and Pleasant Grove. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

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 3561 8151 3559 8166 3558 8169 3558 8170
      3559 8171 3561 8172 3560 8174 3561 8174
      3575 8176 3579 8162
TIME...MOT...LOC 2300Z 343DEG 12KT 3570 8168 

HAIL...1.00IN
WIND...60MPH
 
$$

KRENTZ

2 follow-up statements

466 
WWUS52 KGSP 272314
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
714 PM EDT Tue Jul 27 2021

NCC023-272345-
/O.CON.KGSP.SV.W.0078.000000T0000Z-210727T2345Z/
Burke NC-
714 PM EDT Tue Jul 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR SOUTH CENTRAL BURKE COUNTY...

At 714 PM EDT, a severe thunderstorm was located 4 miles southeast of
Morganton, moving south at 10 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...
Morganton, South Mountains State Park and Pleasant Grove. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

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 3561 8151 3559 8166 3558 8169 3558 8170
      3559 8171 3561 8172 3560 8174 3561 8174
      3573 8175 3576 8163
TIME...MOT...LOC 2314Z 338DEG 8KT 3568 8167 

HAIL...1.00IN
WIND...60MPH
 
$$

KRENTZ

424 
WWUS52 KGSP 272339
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
739 PM EDT Tue Jul 27 2021

NCC023-272349-
/O.EXP.KGSP.SV.W.0078.000000T0000Z-210727T2345Z/
Burke NC-
739 PM EDT Tue Jul 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL BURKE COUNTY
WILL EXPIRE AT 745 PM EDT...
                
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 will be allowed to expire.  However gusty winds
are still possible with this thunderstorm.

LAT...LON 3561 8151 3559 8166 3558 8169 3558 8170
      3559 8171 3561 8172 3560 8174 3561 8174
      3573 8175 3576 8163
TIME...MOT...LOC 2339Z 343DEG 12KT 3563 8165 

$$

KRENTZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 6:52 AM EDT	Dense Fog Advisory	GSP	Burke, Cleveland, McDowell, Polk, Rutherford	2 hr
Jul 27, 3:24 PM EDT	Special Weather Statement	GSP	McDowell	36 min
Jul 27, 4:00 PM EDT	Special Weather Statement	GSP	Polk	30 min
Jul 27, 4:22 PM EDT	Special Weather Statement	GSP	Jackson	38 min
Jul 27, 4:53 PM EDT	Special Weather Statement	GSP	Avery	52 min
Jul 27, 5:03 PM EDT	Special Weather Statement	GSP	Henderson	27 min
Jul 27, 5:31 PM EDT	Special Weather Statement	GSP	Alexander	29 min
Jul 27, 6:01 PM EDT	Special Weather Statement	GSP	Iredell	29 min
Jul 27, 6:14 PM EDT	Special Weather Statement	GSP	Alexander	31 min
Jul 27, 6:23 PM EDT	Special Weather Statement	GSP	Burke	37 min
Jul 27, 6:41 PM EDT	Areal Flood Advisory	GSP	Alexander, Burke, Caldwell, Catawba, McDowell	3 hr
Jul 27, 7:38 PM EDT	Special Weather Statement	GSP	Catawba	22 min
Jul 27, 7:52 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland, Rutherford	32 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2021 Every 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.