Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 21, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 8, 2021, 10:30 PM EDT for Anderson County, Oconee County, Pickens County, South Carolina. It was in force for 45 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 8, 2021, 10:30 PM EDT (02:30 UTC)
- Expired
- Apr 8, 2021, 11:15 PM EDT
- In force
- 45 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Anderson County, SC, Oconee County, SC, Pickens County, SC
The radar
The Greer radar (KGSP), 63 km from the middle of the area, began a volume at 02:32 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
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 2.5 hours before the alert went out and 207 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
- 366 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 1722 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.6
The text
As transmitted.
057
WUUS52 KGSP 090230
SVRGSP
SCC007-073-077-090315-
/O.NEW.KGSP.SV.W.0021.210409T0230Z-210409T0315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
1030 PM EDT Thu Apr 8 2021
The National Weather Service in Greenville-Spartanburg has issued a
* Severe Thunderstorm Warning for...
Central Anderson County in Upstate South Carolina...
Southwestern Pickens County in Upstate South Carolina...
Southeastern Oconee County in Upstate South Carolina...
* Until 1115 PM EDT.
* At 1029 PM EDT, a severe thunderstorm was located 4 miles southeast
of Seneca, moving east at 25 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...
Anderson, Clemson, Seneca, Northlake, Pendleton, Townville, Sandy
Springs, Central, Anderson Airport and Broadway Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Large hail can cause major property damage, especially to vehicles.
Strong winds may blow down a few trees and power lines. 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.
The northern part of Lake Hartwell is in the path of this storm. Get
away from the water and seek shelter in an interior room in the
nearest shelter. If you can hear thunder, you are close enough to be
struck by lightning.
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 3459 8302 3473 8299 3471 8253 3446 8259
TIME...MOT...LOC 0229Z 280DEG 21KT 3464 8291
HAIL...1.00IN
WIND...60MPH
$$
81 follow-up statement
875
WWUS52 KGSP 090305
SVSGSP
Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
1105 PM EDT Thu Apr 8 2021
SCC007-073-077-090315-
/O.EXP.KGSP.SV.W.0021.000000T0000Z-210409T0315Z/
Anderson SC-Pickens SC-Oconee SC-
1105 PM EDT Thu Apr 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ANDERSON...
SOUTHWESTERN PICKENS AND SOUTHEASTERN OCONEE COUNTIES WILL EXPIRE AT
1115 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning will be allowed to expire.
If you observed large hail or wind damage, please report it to the
National Weather Service Greenville-Spartanburg by calling toll free,
1, 800, 2 6 7, 8 1 0 1, or by posting on our Facebook page, or Tweet
it using hashtag nwsgsp. Your message should describe the event and
the specific location where it occurred.
LAT...LON 3459 8302 3473 8299 3471 8253 3446 8259
TIME...MOT...LOC 0305Z 280DEG 21KT 3461 8271
$$
8The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 9:50 PM EDT | Severe Thunderstorm Warning | GSP | Oconee | 25 min |
| Apr 8, 10:12 PM EDT | Special Weather Statement | GSP | Oconee | 33 min |
| Apr 8, 10:14 PM EDT | Severe Thunderstorm Warning | GSP | Anderson, Oconee | 46 min |
| Apr 8, 11:02 PM EDT | Special Weather Statement | GSP | Anderson | 43 min |
| Apr 8, 11:26 PM EDT | Severe Thunderstorm Warning | GSP | Abbeville, Anderson | 34 min |
| Apr 8, 11:36 PM EDT | Special Weather Statement | GSP | Anderson | 24 min |
| Apr 8, 11:58 PM EDT | Special Weather Statement | GSP | Anderson | 32 min |
| Apr 9, 12:01 AM EDT | Severe Thunderstorm Warning | GSP | Abbeville, Anderson, Greenwood, Laurens | 44 min |
| Apr 9, 12:05 AM EDT | Special Weather Statement | GSP | Laurens | 25 min |
| Apr 9, 12:47 AM EDT | Special Weather Statement | GSP | Greenwood | 28 min |
| Apr 9, 12:58 AM EDT | Special Weather Statement | GSP | Greenville | 32 min |
| Apr 9, 1:02 AM EDT | Special Weather Statement | GSP | Laurens | 28 min |
| Apr 9, 1:16 AM EDT | Special Weather Statement | GSP | Laurens | 44 min |
Nearby
Severe Thunderstorm Warnings in South 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.