Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 71, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 23, 2021, 6:32 PM EDT for Anderson County, Oconee County, Pickens County, South Carolina. It was in force for 30 min. 2 reports 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 23, 2021, 6:32 PM EDT (22:32 UTC)
- Expired
- Jul 23, 2021, 7:02 PM EDT
- In force
- 30 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), 59 km from the middle of the area, began a volume at 22:33 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 23, 6:35 PM EDT | TSTM WND DMG | 1 Nw Clemson, SC | PUBLIC REPORTED (VIA SOCIAL MEDIA) A TREE DOWN ON TWO VEHICLES ON LINDSAY RD. |
| Jul 23, 6:35 PM EDT | TSTM WND DMG | 1 W Clemson, SC | CLEMSON CITY POLICE REPORTED TREES AND POWER LINES DOWN IN SEVERAL AREAS OF TOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.5 hours before the alert went out and 213 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
- 158 J/kg
- Mixed-layer CIN
- -159 J/kg
- Mixed-layer LCL
- 1211 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
898
WUUS52 KGSP 232232
SVRGSP
SCC007-073-077-232315-
/O.NEW.KGSP.SV.W.0071.210723T2232Z-210723T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
632 PM EDT Fri Jul 23 2021
The National Weather Service in Greenville-Spartanburg has issued a
* Severe Thunderstorm Warning for...
Northwestern Anderson County in Upstate South Carolina...
Southwestern Pickens County in Upstate South Carolina...
Southeastern Oconee County in Upstate South Carolina...
* Until 715 PM EDT.
* At 631 PM EDT, a severe thunderstorm was located over Clemson,
moving south at 15 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...
Clemson, Central, Northlake, Pendleton, Norris, Townville, Sandy
Springs, Anderson and Lake Hartwell.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Brief damaging winds will blow down trees and power lines over small
areas. A brief period of large hail is also possible. 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 3477 8290 3478 8271 3453 8261 3453 8293
TIME...MOT...LOC 2231Z 354DEG 13KT 3470 8281
HAIL...1.00IN
WIND...60MPH
$$
CAC2 follow-up statements
128
WWUS52 KGSP 232248
SVSGSP
Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
648 PM EDT Fri Jul 23 2021
SCC073-232257-
/O.CAN.KGSP.SV.W.0071.000000T0000Z-210723T2315Z/
Oconee SC-
648 PM EDT Fri Jul 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OCONEE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore the warning has been cancelled.
LAT...LON 3455 8287 3459 8287 3461 8286 3462 8287
3462 8285 3463 8285 3464 8283 3465 8283
3465 8284 3467 8285 3470 8285 3470 8286
3473 8286 3474 8272 3453 8261
TIME...MOT...LOC 2247Z 354DEG 13KT 3464 8280
$$
SCC007-077-232315-
/O.CON.KGSP.SV.W.0071.000000T0000Z-210723T2315Z/
Anderson SC-Pickens SC-
648 PM EDT Fri Jul 23 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR NORTHWESTERN ANDERSON AND SOUTHWESTERN PICKENS COUNTIES...
At 647 PM EDT, a severe thunderstorm was located near Clemson, or
near Pendleton, moving south at 15 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...
Clemson, Central, Northlake, Pendleton, Sandy Springs, Anderson and
Lake Hartwell.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Brief damaging winds will blow down trees and power lines over small
areas. A brief period of large hail is also possible. 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 storms 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 3455 8287 3459 8287 3461 8286 3462 8287
3462 8285 3463 8285 3464 8283 3465 8283
3465 8284 3467 8285 3470 8285 3470 8286
3473 8286 3474 8272 3453 8261
TIME...MOT...LOC 2247Z 354DEG 13KT 3464 8280
HAIL...1.00IN
WIND...60MPH
$$
CAC527
WWUS52 KGSP 232302
SVSGSP
Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
702 PM EDT Fri Jul 23 2021
SCC007-077-232312-
/O.CAN.KGSP.SV.W.0071.000000T0000Z-210723T2315Z/
Anderson SC-Pickens SC-
702 PM EDT Fri Jul 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ANDERSON AND
SOUTHWESTERN PICKENS COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore the warning has
been cancelled. However heavy rain is still possible with this
thunderstorm.
LAT...LON 3455 8287 3459 8287 3461 8286 3462 8287
3462 8285 3463 8285 3464 8283 3465 8283
3465 8284 3467 8285 3470 8285 3470 8286
3473 8286 3474 8272 3453 8261
TIME...MOT...LOC 2301Z 354DEG 13KT 3458 8279
$$
CACThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 10:35 PM EDT | Special Weather Statement | GSP | Spartanburg | 25 min |
| Jul 23, 5:20 PM EDT | Special Weather Statement | GSP | Pickens | 25 min |
| Jul 23, 5:27 PM EDT | Special Weather Statement | GSP | Pickens | 33 min |
| Jul 23, 5:50 PM EDT | Special Weather Statement | GSP | Pickens | 25 min |
| Jul 23, 6:09 PM EDT | Special Weather Statement | GSP | Anderson | 36 min |
| Jul 23, 6:55 PM EDT | Special Weather Statement | GSP | Greenville | 35 min |
| Jul 23, 7:11 PM EDT | Areal Flood Advisory | GSP | Anderson | 2 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.