Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 24, NWS Greenville-Spartanburg, SC

April 10, 20217 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 10, 2021, 7:40 PM EDT for 7 counties in North Carolina. It was in force for 50 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
Apr 10, 2021, 7:40 PM EDT (23:40 UTC)
Expired
Apr 10, 2021, 8:30 PM EDT
In force
50 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Burke County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Gaston County, NC, Lincoln County, NC, Rutherford County, NC

The radar

The Greer radar (KGSP), 123 km from the middle of the area, began a volume at 23:44 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, 11.7 hours before the alert went out and 132 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 2021-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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 2021-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 square meters per square second.19395878Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
706 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

779 
WUUS52 KGSP 102340
SVRGSP
NCC023-027-035-045-071-109-161-110030-
/O.NEW.KGSP.SV.W.0024.210410T2340Z-210411T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
740 PM EDT Sat Apr 10 2021

The National Weather Service in Greenville-Spartanburg has issued a

* Severe Thunderstorm Warning for...
  Catawba County in the Piedmont of North Carolina...
  East central Rutherford County in western North Carolina...
  Lincoln County in the Piedmont of North Carolina...
  Southeastern Caldwell County in western North Carolina...
  Central Cleveland County in the Piedmont of North Carolina...
  Northwestern Gaston County in the Piedmont of North Carolina...
  Southeastern Burke County in western North Carolina...

* Until 830 PM EDT.

* At 740 PM EDT, rain showers capable of producing damaging winds
  were located along a line extending from 12 miles north of Forest
  City to 3 miles east of Shelby, moving northeast at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Hickory, Shelby, Newton, Lincolnton, St. Stephens, Conover,
  Cherryville, Longview, Sawmills and Granite Falls.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Scattered trees and power lines will be blown down in the warned
area. 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 3585 8134 3580 8133 3581 8125 3578 8118
      3560 8093 3557 8096 3555 8096 3522 8146
      3548 8182 3590 8144
TIME...MOT...LOC 2340Z 225DEG 39KT 3550 8179 3530 8149 

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

8
1 follow-up statement
937 
WWUS52 KGSP 110008
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
808 PM EDT Sat Apr 10 2021

NCC045-071-161-110017-
/O.CAN.KGSP.SV.W.0024.000000T0000Z-210411T0030Z/
Rutherford NC-Cleveland NC-Gaston NC-
808 PM EDT Sat Apr 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL RUTHERFORD...
CENTRAL CLEVELAND AND NORTHWESTERN GASTON COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area, and therefore the warning has been cancelled.

LAT...LON 3585 8134 3582 8134 3580 8133 3580 8130
      3581 8125 3579 8121 3578 8117 3564 8098
      3541 8131 3542 8136 3558 8148 3565 8166
      3590 8144
TIME...MOT...LOC 0007Z 221DEG 38KT 3569 8160 3563 8144 3550 8135 

$$

NCC023-027-035-109-110030-
/O.CON.KGSP.SV.W.0024.000000T0000Z-210411T0030Z/
Catawba NC-Lincoln NC-Caldwell NC-Burke NC-
808 PM EDT Sat Apr 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR CATAWBA...CENTRAL LINCOLN...SOUTHEASTERN CALDWELL AND
SOUTHEASTERN BURKE COUNTIES...

At 807 PM EDT, rain showers capable of producing damaging winds were
located along a line extending from 6 miles southeast of Morganton to
10 miles southwest of Hickory to 6 miles west of Lincolnton, moving
northeast at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Hickory, Newton, Lincolnton, St. Stephens, Conover, Longview,
Sawmills, Granite Falls, Valdese and Maiden.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Scattered trees and power lines will be blown down in the warned
area. 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 3585 8134 3582 8134 3580 8133 3580 8130
      3581 8125 3579 8121 3578 8117 3564 8098
      3541 8131 3542 8136 3558 8148 3565 8166
      3590 8144
TIME...MOT...LOC 0007Z 221DEG 38KT 3569 8160 3563 8144 3550 8135 

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

8

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 10, 6:58 PM EDTTornado WarningGSPRutherford32 min
Apr 10, 7:37 PM EDTTornado WarningGSPBurke, McDowell, Rutherford38 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.