Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 39, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at May 4, 2021, 5:03 PM EDT for 4 counties in South Carolina. It was in force for 57 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
- May 4, 2021, 5:03 PM EDT (21:03 UTC)
- Expired
- May 4, 2021, 6:00 PM EDT
- In force
- 57 min
- Issued by
- NWS Columbia, SC
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Chesterfield County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC
The radar
The Columbia radar (KCAE), 120 km from the middle of the area, began a volume at 21:04 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 |
|---|---|---|---|
| May 4, 5:30 PM EDT | TSTM WND DMG | 5 Ssw Patrick, SC | SC HIGHWAY PATROL REPORTS TREE IN ROADWAY AT CEDAR CREEK RD AND UNDERGROUND BRANCH RD. TIME ESTIMATED BY RADAR. |
| May 4, 5:55 PM EDT | TSTM WND DMG | 9 Ne Camden, SC | SC HIGHWAY PATROL REPORTS TREE BLOCKING ROADWAY AT IVY RD AND US1. TIME ESTIMATED BY RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 4, 4:56 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.1 hours before the alert went out and 171 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.
670
WUUS52 KCAE 042103
SVRCAE
SCC025-055-057-061-042200-
/O.NEW.KCAE.SV.W.0039.210504T2103Z-210504T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Columbia SC
503 PM EDT Tue May 4 2021
The National Weather Service in Columbia has issued a
* Severe Thunderstorm Warning for...
Southeastern Lancaster County in central South Carolina...
Northwestern Lee County in central South Carolina...
Chesterfield County in central South Carolina...
Northeastern Kershaw County in central South Carolina...
* Until 600 PM EDT.
* At 502 PM EDT, severe thunderstorms were located along a line
extending from 6 miles northwest of Pageland to Goodale State Park,
moving northeast at 60 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Cheraw, Pageland, Chesterfield, Cheraw State Park, Northeastern
Technical College, Cassatt, Cheraw Municipal Airport, Carolina
Sandhills Wildlife Refuge, Mt Pisgah, Goodale State Park, Mcbee,
Jefferson, Ruby, Patrick, Bethune, Mount Croghan, Lucknow,
Chesterfield Ruby Middle School, North Central High School and
Cheraw Fish Hatchery.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection seek shelter inside a sturdy building and stay
away from windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways or
walk through high water.
&&
LAT...LON 3460 7981 3453 7983 3449 7990 3450 7998
3449 8005 3436 8029 3432 8024 3437 8018
3431 8017 3423 8054 3482 8051 3481 7994
3476 7993 3474 7989 3468 7986 3465 7980
3462 7978
TIME...MOT...LOC 2102Z 240DEG 51KT 3484 8047 3430 8050
HAIL...<.75IN
WIND...60MPH
$$
JAQ4 follow-up statements
437
WWUS52 KCAE 042112
SVSCAE
Severe Weather Statement
National Weather Service Columbia SC
512 PM EDT Tue May 4 2021
SCC025-055-057-061-042200-
/O.CON.KCAE.SV.W.0039.000000T0000Z-210504T2200Z/
Lancaster SC-Lee SC-Chesterfield SC-Kershaw SC-
512 PM EDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR SOUTHEASTERN LANCASTER...NORTHWESTERN LEE...CHESTERFIELD AND
NORTHEASTERN KERSHAW COUNTIES...
At 512 PM EDT, severe thunderstorms were located along a line
extending from Sturdivants to near Cassatt, moving northeast at 60
mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Cheraw, Pageland, Chesterfield, Cheraw State Park, Northeastern
Technical College, Cassatt, Cheraw Municipal Airport, Carolina
Sandhills Wildlife Refuge, Mt Pisgah, Goodale State Park, Mcbee,
Jefferson, Ruby, Patrick, Bethune, Mount Croghan, Lucknow,
Chesterfield Ruby Middle School, North Central High School and Cheraw
Fish Hatchery.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These are dangerous storms! Prepare immediately for strong winds
capable of producing significant damage. Seek shelter inside a sturdy
building and stay away from windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways or
walk through high water.
&&
LAT...LON 3460 7981 3453 7983 3449 7990 3450 7998
3449 8005 3436 8029 3432 8024 3437 8018
3431 8017 3423 8054 3482 8051 3481 7994
3476 7993 3474 7989 3468 7986 3465 7980
3462 7978
TIME...MOT...LOC 2112Z 240DEG 51KT 3491 8032 3437 8036
HAIL...<.75IN
WIND...70MPH
$$
JAQ138
WWUS52 KCAE 042133
SVSCAE
Severe Weather Statement
National Weather Service Columbia SC
533 PM EDT Tue May 4 2021
SCC055-057-042143-
/O.CAN.KCAE.SV.W.0039.000000T0000Z-210504T2200Z/
Lancaster SC-Kershaw SC-
533 PM EDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LANCASTER AND
NORTHEASTERN KERSHAW COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
central South Carolina.
LAT...LON 3460 7981 3453 7983 3449 7990 3449 8005
3438 8028 3432 8024 3437 8018 3431 8017
3427 8038 3434 8034 3441 8031 3457 8023
3481 8038 3481 7994 3476 7993 3474 7989
3468 7986 3464 7980 3462 7979
TIME...MOT...LOC 2133Z 240DEG 51KT 3505 8002 3451 8006
$$
SCC025-061-042200-
/O.CON.KCAE.SV.W.0039.000000T0000Z-210504T2200Z/
Lee SC-Chesterfield SC-
533 PM EDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR NORTHWESTERN LEE AND CHESTERFIELD COUNTIES...
At 533 PM EDT, severe thunderstorms were located along a line
extending from 6 miles southeast of Ansonville to 8 miles north of
North Hartsville, moving northeast at 60 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Cheraw, Chesterfield, Cheraw State Park, Northeastern Technical
College, Cheraw Municipal Airport, Mcbee, Ruby, Patrick, Mount
Croghan, Lucknow, Chesterfield Ruby Middle School, Cheraw Fish
Hatchery, Alligator Fire Station, Middendorf, Bay Springs Fire
Station, Chesterfield Detention Center and Ashland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These are dangerous storms! Prepare immediately for strong winds
capable of producing significant damage. Seek shelter inside a sturdy
building and stay away from windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways or
walk through high water.
&&
LAT...LON 3460 7981 3453 7983 3449 7990 3449 8005
3438 8028 3432 8024 3437 8018 3431 8017
3427 8038 3434 8034 3441 8031 3457 8023
3481 8038 3481 7994 3476 7993 3474 7989
3468 7986 3464 7980 3462 7979
TIME...MOT...LOC 2133Z 240DEG 51KT 3505 8002 3451 8006
HAIL...<.75IN
WIND...70MPH
$$
JAQ870
WWUS52 KCAE 042149
SVSCAE
Severe Weather Statement
National Weather Service Columbia SC
549 PM EDT Tue May 4 2021
SCC061-042158-
/O.CAN.KCAE.SV.W.0039.000000T0000Z-210504T2200Z/
Lee SC-
549 PM EDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN LEE COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
central South Carolina.
LAT...LON 3460 7981 3453 7983 3449 7990 3449 8005
3442 8020 3443 8020 3463 8007 3481 8017
3481 7994 3476 7993 3474 7989 3468 7986
3464 7980 3462 7979
TIME...MOT...LOC 2148Z 240DEG 51KT 3516 7980 3462 7984
$$
SCC025-042200-
/O.CON.KCAE.SV.W.0039.000000T0000Z-210504T2200Z/
Chesterfield SC-
549 PM EDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR EASTERN CHESTERFIELD COUNTY...
At 548 PM EDT, severe thunderstorms were located along a line
extending from 14 miles south of Biscoe to near Cheraw State Park,
moving northeast at 60 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Cheraw, Chesterfield, Cheraw State Park, Cheraw Municipal Airport,
Northeastern Technical College, Patrick, Cheraw Fish Hatchery and
Chesterfield Detention Center.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These are dangerous storms! Prepare immediately for strong winds
capable of producing significant damage. Seek shelter inside a sturdy
building and stay away from windows.
Excessive cloud to ground lightning is occurring with these storms.
If you can hear thunder, you are close enough to be struck by
lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways or
walk through high water.
&&
LAT...LON 3460 7981 3453 7983 3449 7990 3449 8005
3442 8020 3443 8020 3463 8007 3481 8017
3481 7994 3476 7993 3474 7989 3468 7986
3464 7980 3462 7979
TIME...MOT...LOC 2148Z 240DEG 51KT 3516 7980 3462 7984
HAIL...<.75IN
WIND...70MPH
$$
JAQ352
WWUS52 KCAE 042159
SVSCAE
Severe Weather Statement
National Weather Service Columbia SC
559 PM EDT Tue May 4 2021
SCC025-042209-
/O.EXP.KCAE.SV.W.0039.000000T0000Z-210504T2200Z/
Chesterfield SC-
559 PM EDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CHESTERFIELD COUNTY
WILL EXPIRE AT 600 PM EDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
central South Carolina.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Columbia.
LAT...LON 3460 7981 3453 7983 3449 7990 3449 8005
3442 8020 3443 8020 3463 8007 3481 8017
3481 7994 3476 7993 3474 7989 3468 7986
3464 7980 3462 7979
TIME...MOT...LOC 2159Z 240DEG 51KT 3524 7964 3470 7968
$$
JAQThe office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 3:29 PM EDT | Special Weather Statement | CAE | Saluda | 31 min |
| May 4, 3:42 PM EDT | Special Weather Statement | CAE | Lexington | 33 min |
| May 4, 3:45 PM EDT | Severe Thunderstorm Warning | CAE | Lexington, Newberry, Richland, Saluda | 45 min |
| May 4, 3:50 PM EDT | Special Weather Statement | CAE | Newberry | 25 min |
| May 4, 3:52 PM EDT | Severe Thunderstorm Warning | CAE | Calhoun, Lexington, Richland | 41 min |
| May 4, 3:54 PM EDT | Special Weather Statement | CAE | McCormick | 36 min |
| May 4, 3:54 PM EDT | Severe Thunderstorm Warning | CAE | Lancaster | 36 min |
| May 4, 4:00 PM EDT | Severe Thunderstorm Warning | CAE | Fairfield, Newberry, Saluda | 45 min |
| May 4, 4:16 PM EDT | Severe Thunderstorm Warning | CAE | Fairfield, Kershaw, Lancaster, Newberry, Richland | 59 min |
| May 4, 4:22 PM EDT | Severe Thunderstorm Warning | CAE | Chesterfield, Fairfield, Kershaw, Lancaster, Lee | 53 min |
| May 4, 4:38 PM EDT | Severe Thunderstorm Warning | CAE | Edgefield, McCormick, Saluda | 53 min |
| May 4, 4:46 PM EDT | Severe Thunderstorm Warning | CAE | Fairfield, Lexington, Newberry, Richland | 44 min |
| May 4, 5:30 PM EDT | Severe Thunderstorm Warning | CAE | Aiken, Barnwell, Lexington, Orangeburg | 60 min |
| May 4, 6:03 PM EDT | Severe Thunderstorm Warning | CAE | Bamberg, Barnwell, Calhoun, Orangeburg, Richland | 57 min |
| May 4, 6:07 PM EDT | Severe Thunderstorm Warning | CAE | Clarendon, Lee, Richland, Sumter | 53 min |
| May 4, 6:57 PM EDT | Severe Thunderstorm Warning | CAE | Clarendon | 48 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.