Alert archive / South Carolina / Tornado Warnings in 2021
Tornado Warning 54, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this tornado warning at Aug 17, 2021, 5:37 PM EDT for Chester County, York County, South Carolina. It was in force for 38 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
- Aug 17, 2021, 5:37 PM EDT (21:37 UTC)
- Expired
- Aug 17, 2021, 6:15 PM EDT
- In force
- 38 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Chester County, SC, York County, SC
The radar
The Greer radar (KGSP), 101 km from the middle of the area, began a volume at 21:39 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 17, 10:42 AM EDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.6 hours before the alert went out and 168 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
- 522 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 593 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
The text
As transmitted.
928
WFUS52 KGSP 172137
TORGSP
SCC023-091-172215-
/O.NEW.KGSP.TO.W.0054.210817T2137Z-210817T2215Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Greenville-Spartanburg SC
537 PM EDT Tue Aug 17 2021
The National Weather Service in Greenville-Spartanburg has issued a
* Tornado Warning for...
Central Chester County in Upstate South Carolina...
Central York County in Upstate South Carolina...
* Until 615 PM EDT.
* At 536 PM EDT, a severe thunderstorm capable of producing a tornado
was located 5 miles south of Chester, or near Chester State Park,
moving north at 40 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Chester and Chester State Park around 540 PM EDT.
Mcconnells and Lowrys around 600 PM EDT.
Rock Hill, York and Newport around 610 PM EDT.
Other locations impacted by this dangerous thunderstorm include
Blackstock and Cornwell.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Please report damaging winds, hail, or flooding to the National
Weather Service 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 3457 8131 3516 8127 3514 8105 3511 8103
3509 8106 3506 8106 3504 8104 3510 8095
3455 8109
TIME...MOT...LOC 2136Z 187DEG 34KT 3463 8120
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
RWH3 follow-up statements
739
WWUS52 KGSP 172153 RRA
SVSGSP
Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
553 PM EDT Tue Aug 17 2021
SCC023-091-172215-
/O.CON.KGSP.TO.W.0054.000000T0000Z-210817T2215Z/
Chester SC-York SC-
553 PM EDT Tue Aug 17 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM EDT FOR NORTH
CENTRAL CHESTER AND CENTRAL YORK COUNTIES...
At 553 PM EDT, a severe thunderstorm capable of producing a tornado
was located 7 miles north of Chester, or over Lowrys, moving north at
40 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Mcconnells around 600 PM EDT.
York around 620 PM EDT.
Clover around 630 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3516 8127 3514 8105 3511 8103 3509 8106
3506 8106 3504 8104 3510 8095 3469 8105
3472 8130
TIME...MOT...LOC 2153Z 182DEG 35KT 3481 8125
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
RWH877
WWUS52 KGSP 172200
SVSGSP
Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
600 PM EDT Tue Aug 17 2021
SCC023-172209-
/O.CAN.KGSP.TO.W.0054.000000T0000Z-210817T2215Z/
Chester SC-
600 PM EDT Tue Aug 17 2021
...THE TORNADO WARNING FOR NORTH CENTRAL CHESTER COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 700 PM EDT for the Piedmont
of North Carolina...and Upstate South Carolina.
LAT...LON 3482 8102 3482 8129 3516 8127 3514 8105
3513 8105 3513 8104 3511 8103 3509 8106
3506 8106 3504 8104 3510 8095
TIME...MOT...LOC 2159Z 187DEG 34KT 3487 8124
$$
SCC091-172215-
/O.CON.KGSP.TO.W.0054.000000T0000Z-210817T2215Z/
York SC-
600 PM EDT Tue Aug 17 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM EDT FOR CENTRAL
YORK COUNTY...
At 559 PM EDT, a severe thunderstorm capable of producing a tornado
was located 8 miles south of York, or over Mcconnells, moving north
at 40 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
York around 620 PM EDT.
Clover around 630 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3482 8102 3482 8129 3516 8127 3514 8105
3513 8105 3513 8104 3511 8103 3509 8106
3506 8106 3504 8104 3510 8095
TIME...MOT...LOC 2159Z 187DEG 34KT 3487 8124
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
RWH454
WWUS52 KGSP 172211
SVSGSP
Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
611 PM EDT Tue Aug 17 2021
SCC091-172221-
/O.EXP.KGSP.TO.W.0054.000000T0000Z-210817T2215Z/
York SC-
611 PM EDT Tue Aug 17 2021
...THE TORNADO WARNING FOR CENTRAL YORK COUNTY WILL EXPIRE AT 615 PM
EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 700 PM EDT for the Piedmont
of North Carolina...and Upstate South Carolina.
LAT...LON 3482 8102 3482 8129 3516 8127 3514 8105
3513 8105 3513 8104 3511 8103 3509 8106
3506 8106 3504 8104 3510 8095
TIME...MOT...LOC 2211Z 187DEG 34KT 3498 8122
$$
RWHThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 11:47 AM EDT | Tornado Warning | GSP | Oconee | 13 min |
| Aug 17, 12:30 PM EDT | Flash Flood Warning | GSP | Oconee | 5 hr |
| Aug 17, 12:30 PM EDT | Tornado Warning | GSP | Oconee, Pickens | 23 min |
| Aug 17, 12:59 PM EDT | Tornado Warning | GSP | Anderson, Pickens | 23 min |
| Aug 17, 1:20 PM EDT | Tornado Warning | GSP | Pickens | 25 min |
| Aug 17, 2:03 PM EDT | Flash Flood Warning | GSP | Greenville, Pickens | 5 hr |
| Aug 17, 2:14 PM EDT | Tornado Warning | GSP | Greenwood, Laurens | 33 min |
| Aug 17, 2:52 PM EDT | Tornado Warning | GSP | Greenville | 26 min |
| Aug 17, 3:01 PM EDT | Tornado Warning | GSP | Greenville | 18 min |
| Aug 17, 3:25 PM EDT | Special Weather Statement | GSP | Spartanburg | 35 min |
| Aug 17, 3:26 PM EDT | Special Weather Statement | GSP | Oconee | 34 min |
| Aug 17, 4:34 PM EDT | Special Weather Statement | GSP | Abbeville, Anderson, Pickens | 26 min |
| Aug 17, 5:08 PM EDT | Tornado Warning | GSP | Anderson, Greenville, Pickens | 52 min |
| Aug 17, 5:10 PM EDT | Tornado Warning | GSP | Abbeville, Greenville, Greenwood, Laurens | 50 min |
| Aug 17, 5:11 PM EDT | Tornado Warning | GSP | Abbeville, Greenwood, Laurens | 49 min |
| Aug 17, 5:33 PM EDT | Tornado Warning | GSP | Anderson, Greenville, Spartanburg | 42 min |
| Aug 17, 5:57 PM EDT | Tornado Warning | GSP | Greenville, Laurens, Spartanburg | 48 min |
| Aug 17, 5:58 PM EDT | Tornado Warning | GSP | Greenwood, Laurens | 47 min |
| Aug 17, 6:15 PM EDT | Tornado Warning | GSP | Laurens, Spartanburg, Union | 45 min |
| Aug 17, 6:16 PM EDT | Flash Flood Warning | GSP | Greenville, Pickens, Spartanburg | 3 hr |
| Aug 17, 6:42 PM EDT | Tornado Warning | GSP | Spartanburg | 48 min |
| Aug 17, 6:46 PM EDT | Tornado Warning | GSP | Cherokee, Spartanburg | 44 min |
| Aug 17, 6:51 PM EDT | Tornado Warning | GSP | Laurens, Spartanburg, Union | 39 min |
| Aug 17, 7:59 PM EDT | Tornado Warning | GSP | Cherokee, Spartanburg | 46 min |
Nearby
Tornado Warnings in South Carolina, 2021Every tornado warning in 2021Tornadoes 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.