Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 32, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 4, 2021, 3:53 PM EDT for Union County, North Carolina; Chester County, York County, South Carolina. It was in force for 52 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
- May 4, 2021, 3:53 PM EDT (19:53 UTC)
- Expired
- May 4, 2021, 4:45 PM EDT
- In force
- 52 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Union County, NC, Chester County, SC, York County, SC
The radar
The Columbia radar (KCAE), 112 km from the middle of the area, began a volume at 19:55 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, 7.9 hours before the alert went out and 151 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.
- Mixed-layer CAPE
- 463 J/kg
- Mixed-layer CIN
- -235 J/kg
- Mixed-layer LCL
- 935 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
010
WUUS52 KGSP 041953
SVRGSP
NCC179-SCC023-091-042045-
/O.NEW.KGSP.SV.W.0032.210504T1953Z-210504T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
353 PM EDT Tue May 4 2021
The National Weather Service in Greenville-Spartanburg has issued a
* Severe Thunderstorm Warning for...
Union County in the Piedmont of North Carolina...
Northeastern Chester County in Upstate South Carolina...
Southeastern York County in Upstate South Carolina...
* Until 445 PM EDT.
* At 353 PM EDT, a severe thunderstorm was located 6 miles southeast
of Rock Hill, or near Lesslie, moving east at 40 mph.
HAZARD...70 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include...
Rock Hill, Monroe, Indian Trail, Weddington, Stallings, Unionville,
Wesley Chapel, Wingate, Waxhaw and Lake Park.
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 3482 8032 3481 8043 3482 8080 3485 8080
3485 8088 3483 8090 3477 8088 3475 8102
3493 8107 3501 8090 3494 8087 3486 8088
3486 8080 3494 8078 3500 8084 3503 8077
3511 8067 3519 8051 3489 8031
TIME...MOT...LOC 1953Z 258DEG 36KT 3486 8096
HAIL...0.75IN
WIND...70MPH
$$
WJM2 follow-up statements
351
WWUS52 KGSP 042011
SVSGSP
Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
411 PM EDT Tue May 4 2021
SCC023-091-042021-
/O.CAN.KGSP.SV.W.0032.000000T0000Z-210504T2045Z/
Chester SC-York SC-
411 PM EDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHESTER AND
SOUTHEASTERN YORK COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area; therefore the warning has been cancelled.
LAT...LON 3482 8032 3481 8043 3482 8080 3486 8080
3494 8078 3500 8084 3503 8077 3511 8067
3519 8051 3489 8031
TIME...MOT...LOC 2011Z 258DEG 36KT 3490 8074
$$
NCC179-042045-
/O.CON.KGSP.SV.W.0032.000000T0000Z-210504T2045Z/
Union NC-
411 PM EDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR UNION COUNTY...
At 411 PM EDT, a severe thunderstorm was located 9 miles southeast of
Indian Land, or near Waxhaw, moving east at 40 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Monroe, Indian Trail, Weddington, Stallings, Unionville, Wesley
Chapel, Wingate, Waxhaw, Lake Park and Mineral Springs.
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 3482 8032 3481 8043 3482 8080 3486 8080
3494 8078 3500 8084 3503 8077 3511 8067
3519 8051 3489 8031
TIME...MOT...LOC 2011Z 258DEG 36KT 3490 8074
HAIL...0.75IN
WIND...60MPH
$$
WJM942
WWUS52 KGSP 042038
SVSGSP
Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
438 PM EDT Tue May 4 2021
NCC179-042047-
/O.EXP.KGSP.SV.W.0032.000000T0000Z-210504T2045Z/
Union NC-
438 PM EDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR UNION COUNTY WILL EXPIRE AT
445 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore the warning will be
allowed to expire.
LAT...LON 3482 8032 3481 8043 3482 8080 3486 8080
3494 8078 3500 8084 3503 8077 3511 8067
3519 8051 3489 8031
TIME...MOT...LOC 2037Z 258DEG 36KT 3493 8054
$$
WJMThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 10:57 AM EDT | Severe Thunderstorm Warning | GSP | Graham, Haywood, Jackson, Macon, Swain | 36 min |
| May 4, 12:09 PM EDT | Areal Flood Advisory | GSP | Graham, Macon, Swain | 3 hr |
| May 4, 3:24 PM EDT | Special Weather Statement | GSP | Cabarrus, Mecklenburg | 36 min |
| May 4, 3:39 PM EDT | Special Weather Statement | GSP | Union | 51 min |
| May 4, 12:36 PM EDT | Special Weather Statement | GSP | Greenville | 24 min |
| May 4, 1:23 PM EDT | Special Weather Statement | GSP | Pickens | 37 min |
| May 4, 2:19 PM EDT | Special Weather Statement | GSP | Spartanburg | 26 min |
| May 4, 2:51 PM EDT | Special Weather Statement | GSP | Union, York | 39 min |
| May 4, 3:05 PM EDT | Special Weather Statement | GSP | Abbeville | 40 min |
| May 4, 3:21 PM EDT | Special Weather Statement | GSP | Laurens, Union | 24 min |
| May 4, 3:44 PM EDT | Severe Thunderstorm Warning | GSP | Abbeville, Greenwood, Laurens | 13 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2021Severe 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.