Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 77, NWS Greenville-Spartanburg, SC

July 26, 2021Mecklenburg County, North Carolina; York County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 26, 2021, 5:45 PM EDT for Mecklenburg County, North Carolina; York County, South Carolina. It was in force for 30 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: Jul 26, 2021, 5:45 PM EDT (21:45 UTC)
Expired: Jul 26, 2021, 6:15 PM EDT
In force: 30 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Mecklenburg County, NC, York County, SC

The radar

The Greer radar (KGSP), 118 km from the middle of the area, began a volume at 21:49 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 26, 5:45 PM EDT	TSTM WND DMG	1 E Lake Wylie, SC	911 CALL CENTER REPORTED POWER LINES DOWN ON EXECUTIVE CT OFF CHARLOTTE HWY

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, 9.8 hours before the alert went out and 147 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: 401 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 925 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 62 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

784 
WUUS52 KGSP 262145
SVRGSP
NCC119-SCC091-262215-
/O.NEW.KGSP.SV.W.0077.210726T2145Z-210726T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
545 PM EDT Mon Jul 26 2021

The National Weather Service in Greenville-Spartanburg has issued a

* Severe Thunderstorm Warning for...
  Southwestern Mecklenburg County in the Piedmont of North
  Carolina...
  Northeastern York County in Upstate South Carolina...

* Until 615 PM EDT.

* At 544 PM EDT, a severe thunderstorm was located 10 miles northwest
  of Indian Land, or near Steele Creek, moving southeast at 10 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Rock Hill, Southwest Charlotte, Fort Mill, Pineville, Tega Cay,
  Steele Creek, Carowinds, Lake Wylie, Community of Almond Glen and
  The Arboretum.

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 producing frequent and intense lightning. Turn off
electrical appliances. Do not use corded telephones. Do not take a
bath or shower.

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 3503 8087 3508 8091 3504 8090 3503 8090
      3502 8091 3500 8090 3490 8103 3508 8113
      3515 8105 3515 8102 3516 8100 3520 8100
      3510 8078
TIME...MOT...LOC 2144Z 313DEG 9KT 3510 8100 

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

ARK

1 follow-up statement

082 
WWUS52 KGSP 262207
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
607 PM EDT Mon Jul 26 2021

NCC119-SCC091-262216-
/O.EXP.KGSP.SV.W.0077.000000T0000Z-210726T2215Z/
Mecklenburg NC-York SC-
607 PM EDT Mon Jul 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MECKLENBURG AND
NORTHEASTERN YORK COUNTIES WILL EXPIRE AT 615 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
and heavy rain are still possible with this thunderstorm.

If you observed large hail or wind damage, please report it 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 3503 8087 3508 8091 3504 8090 3503 8090
      3502 8091 3500 8090 3490 8103 3508 8113
      3515 8105 3515 8102 3516 8100 3520 8100
      3510 8078
TIME...MOT...LOC 2206Z 313DEG 9KT 3506 8095 

$$

ARK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 8:00 PM EDT	Flash Flood Warning	GSP	Jackson	79 min
Jul 25, 9:29 PM EDT	Areal Flood Advisory	GSP	Burke, McDowell	47 min
Jul 26, 1:22 PM EDT	Special Weather Statement	GSP	Caldwell, McDowell	23 min
Jul 26, 1:45 PM EDT	Special Weather Statement	GSP	Burke, Caldwell	45 min
Jul 26, 2:08 PM EDT	Areal Flood Advisory	GSP	Burke	3 hr
Jul 26, 2:22 PM EDT	Special Weather Statement	GSP	Alexander	23 min
Jul 26, 2:33 PM EDT	Severe Thunderstorm Warning	GSP	Alexander, Iredell	42 min
Jul 26, 2:36 PM EDT	Special Weather Statement	GSP	Burke	24 min
Jul 26, 3:01 PM EDT	Special Weather Statement	GSP	Burke	29 min
Jul 26, 3:06 PM EDT	Areal Flood Advisory	GSP	Macon	3 hr
Jul 26, 3:08 PM EDT	Special Weather Statement	GSP	Davie, Iredell	52 min
Jul 26, 3:26 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland, Lincoln, Rutherford	49 min
Jul 26, 3:28 PM EDT	Severe Thunderstorm Warning	GSP	Catawba, Iredell, Rowan	47 min
Jul 26, 3:55 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland, Gaston	50 min
Jul 26, 3:58 PM EDT	Special Weather Statement	GSP	Polk	32 min
Jul 26, 4:09 PM EDT	Special Weather Statement	GSP	Mecklenburg	36 min
Jul 26, 4:33 PM EDT	Severe Thunderstorm Warning	GSP	Gaston	20 min
Jul 26, 5:10 PM EDT	Areal Flood Advisory	GSP	Mecklenburg	3 hr
Jul 26, 6:03 PM EDT	Areal Flood Advisory	GSP	Gaston, Mecklenburg	3 hr
Jul 26, 4:15 PM EDT	Special Weather Statement	GSP	Oconee	30 min
Jul 26, 4:17 PM EDT	Special Weather Statement	GSP	Spartanburg	28 min
Jul 26, 4:38 PM EDT	Special Weather Statement	GSP	Spartanburg	37 min
Jul 26, 5:04 PM EDT	Areal Flood Advisory	GSP	Cherokee, Greenville, Spartanburg, York	3 hr
Jul 26, 5:15 PM EDT	Special Weather Statement	GSP	Greenville	30 min
Jul 26, 5:47 PM EDT	Special Weather Statement	GSP	Laurens, Union, York	28 min
Jul 26, 6:11 PM EDT	Special Weather Statement	GSP	Chester, Union, York	34 min
Jul 26, 6:20 PM EDT	Special Weather Statement	GSP	Anderson	25 min
Jul 26, 6:48 PM EDT	Special Weather Statement	GSP	Laurens, Union	27 min
Jul 26, 7:40 PM EDT	Special Weather Statement	GSP	Abbeville	35 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2021 Severe Thunderstorm Warnings in South 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.