Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 41, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at May 4, 2021, 6:03 PM EDT for 5 counties in South Carolina. It was in force for 57 min. 1 report 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, 6:03 PM EDT (22:03 UTC)
- Expired
- May 4, 2021, 7:00 PM EDT
- In force
- 57 min
- Issued by
- NWS Columbia, SC
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Orangeburg County, SC, Richland County, SC
The radar
The Charleston,SC radar (KCLX), 73 km from the middle of the area, began a volume at 22:06 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, 6:56 PM EDT | TSTM WND DMG | 4 Ne Bowman, SC | TREES DOWN ALONG I-26. |
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
Charleston AFB, SC (KCHS), launched 12:00Z, 10.1 hours before the alert went out and 88 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
- 573 J/kg
- Mixed-layer CIN
- -149 J/kg
- Mixed-layer LCL
- 1000 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.0
The text
As transmitted.
162
WUUS52 KCAE 042203
SVRCAE
SCC009-011-017-075-079-042300-
/O.NEW.KCAE.SV.W.0041.210504T2203Z-210504T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Columbia SC
603 PM EDT Tue May 4 2021
The National Weather Service in Columbia has issued a
* Severe Thunderstorm Warning for...
Calhoun County in central South Carolina...
Southeastern Barnwell County in central South Carolina...
Bamberg County in central South Carolina...
Orangeburg County in central South Carolina...
Southern Richland County in central South Carolina...
* Until 700 PM EDT.
* At 603 PM EDT, severe thunderstorms were located along a line
extending from near Poinsett State Park to 6 miles east of Savannah
River Site, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Orangeburg, Barnwell, Bamberg, Denmark, Brookdale, Blackville, St.
Matthews, Holly Hill, Branchville, Bowman, Elloree, Santee State
Park, Claflin College, South Carolina State University, Orangeburg
County Airport, Barnwell State Park, Rivers Bridge State Park,
Edisto Gardens, Santee and Ehrhardt.
This includes the following highways...
Interstate 26 between mile markers 136 and 169.
Interstate 95 between mile markers 85 and 101.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection seek shelter inside a sturdy building and stay
away from windows.
Severe thunderstorms can produce large capsizing waves and frequent
lightning. If on or near Lake Marion move away from the water and
take shelter!
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 3312 8119 3311 8136 3316 8153 3309 8162
3311 8166 3381 8074 3374 8062 3358 8052
3354 8045 3344 8039 3344 8022 3330 8025
3327 8030 3326 8043 3329 8049 3333 8051
3313 8089 3306 8090 3310 8094 3303 8108
TIME...MOT...LOC 2203Z 292DEG 27KT 3375 8058 3326 8155
HAIL...<.75IN
WIND...60MPH
$$
JAQ2 follow-up statements
931
WWUS52 KCAE 042243
SVSCAE
Severe Weather Statement
National Weather Service Columbia SC
643 PM EDT Tue May 4 2021
SCC079-042252-
/O.CAN.KCAE.SV.W.0041.000000T0000Z-210504T2300Z/
Richland SC-
643 PM EDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN RICHLAND COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
central South Carolina.
LAT...LON 3312 8119 3311 8136 3316 8153 3325 8143
3363 8055 3358 8052 3354 8045 3344 8039
3344 8022 3330 8025 3327 8030 3326 8043
3329 8049 3333 8051 3313 8089 3306 8090
3310 8094 3303 8108
TIME...MOT...LOC 2242Z 326DEG 21KT 3352 8052 3315 8123
$$
SCC009-011-017-075-042300-
/O.CON.KCAE.SV.W.0041.000000T0000Z-210504T2300Z/
Calhoun SC-Barnwell SC-Bamberg SC-Orangeburg SC-
643 PM EDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR SOUTHEASTERN CALHOUN...SOUTHEASTERN BARNWELL...BAMBERG AND
ORANGEBURG COUNTIES...
At 642 PM EDT, severe thunderstorms were located along a line
extending from near Santee State Park to near Ulmer, moving southeast
at 25 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Orangeburg, Barnwell, Bamberg, Denmark, Brookdale, Holly Hill,
Branchville, Bowman, Elloree, Santee State Park, Claflin College,
South Carolina State University, Orangeburg County Airport, Rivers
Bridge State Park, Edisto Gardens, Santee, Ehrhardt, Hilda, Cameron
and Eutawville.
This includes the following highways...
Interstate 26 between mile markers 149 and 169.
Interstate 95 between mile markers 85 and 101.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection seek shelter inside a sturdy building and stay
away from windows.
Severe thunderstorms can produce large capsizing waves and frequent
lightning. If on or near Lake Marion move away from the water and
take shelter!
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 3312 8119 3311 8136 3316 8153 3325 8143
3363 8055 3358 8052 3354 8045 3344 8039
3344 8022 3330 8025 3327 8030 3326 8043
3329 8049 3333 8051 3313 8089 3306 8090
3310 8094 3303 8108
TIME...MOT...LOC 2242Z 326DEG 21KT 3352 8052 3315 8123
HAIL...0.75IN
WIND...60MPH
$$
JAQ726
WWUS52 KCAE 042257
SVSCAE
Severe Weather Statement
National Weather Service Columbia SC
657 PM EDT Tue May 4 2021
SCC009-011-017-075-042306-
/O.EXP.KCAE.SV.W.0041.000000T0000Z-210504T2300Z/
Calhoun SC-Barnwell SC-Bamberg SC-Orangeburg SC-
657 PM EDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CALHOUN...
SOUTHEASTERN BARNWELL...BAMBERG AND ORANGEBURG COUNTIES WILL EXPIRE
AT 700 PM EDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
central South Carolina.
LAT...LON 3312 8119 3311 8136 3316 8153 3325 8143
3363 8055 3358 8052 3354 8045 3344 8039
3344 8022 3330 8025 3327 8030 3326 8043
3329 8049 3333 8051 3313 8089 3306 8090
3310 8094 3303 8108
TIME...MOT...LOC 2256Z 292DEG 27KT 3349 8044 3312 8115
$$The 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, 5:03 PM EDT | Severe Thunderstorm Warning | CAE | Chesterfield, Kershaw, Lancaster, Lee | 57 min |
| May 4, 5:30 PM EDT | Severe Thunderstorm Warning | CAE | Aiken, Barnwell, Lexington, Orangeburg | 60 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.