Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 32, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at May 4, 2021, 3:52 PM EDT for Calhoun County, Lexington County, Richland County, South Carolina. It was in force for 41 min. 3 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, 3:52 PM EDT (19:52 UTC)
- Expired
- May 4, 2021, 4:33 PM EDT
- In force
- 41 min
- Issued by
- NWS Columbia, SC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Calhoun County, SC, Lexington County, SC, Richland County, SC
The radar
The Columbia radar (KCAE), 10 km from the middle of the area, began a volume at 19:55 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, 4:05 PM EDT | TSTM WND DMG | 2 S Lexington, SC | SC HIGHWAY PATROL REPORTS TREES IN ROADWAY AT I20 EXIT 55. TIME ESTIMATED BY RADAR. |
| May 4, 4:12 PM EDT | TSTM WND GST 65 | 2 Ssw Springdale, SC | AIRPORT ASOS MEASURED 65 MPH PEAK GUST. |
| May 4, 4:21 PM EDT | TSTM WND DMG | 3 Ene Saint Andrews, SC | HIGHWAY PATROL REPORTS TREE BLOCKING ROADWAY NEAR I20 AND MONTICELLO RD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 7.9 hours before the alert went out and 152 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.
767
WUUS52 KCAE 041952
SVRCAE
SCC017-063-079-042045-
/O.NEW.KCAE.SV.W.0032.210504T1952Z-210504T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Columbia SC
352 PM EDT Tue May 4 2021
The National Weather Service in Columbia has issued a
* Severe Thunderstorm Warning for...
Northwestern Calhoun County in central South Carolina...
Lexington County in central South Carolina...
Central Richland County in central South Carolina...
* Until 445 PM EDT.
* At 352 PM EDT, a severe thunderstorm was located 7 miles west of
Gaston, or 8 miles south of Red Bank, moving northeast at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Columbia, Lexington, West Columbia, Cayce, Irmo, Forest Acres,
Batesburg-Leesville, Springdale, St. Andrews, Highway 6 at Lake
Murray Dam, Red Bank, Oak Grove, South Congaree, Pine Ridge,
Gaston, Hopkins, Columbia International University, Harbison State
Forest, Riverbanks Zoo and SC State Farmer's Market.
This includes the following highways...
Interstate 126 between mile markers 0 and 3.
Interstate 20 in South Carolina between mile markers 42 and 70.
Interstate 26 between mile markers 102 and 125.
Interstate 77 between mile markers 0 and 12.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection seek shelter inside a sturdy building and stay
away from windows.
&&
LAT...LON 3368 8119 3392 8151 3414 8111 3392 8080
TIME...MOT...LOC 1952Z 228DEG 30KT 3381 8123
HAIL...1.00IN
WIND...60MPH
$$
JAQ2 follow-up statements
456
WWUS52 KCAE 042005
SVSCAE
Severe Weather Statement
National Weather Service Columbia SC
405 PM EDT Tue May 4 2021
SCC017-063-079-042045-
/O.CON.KCAE.SV.W.0032.000000T0000Z-210504T2045Z/
Calhoun SC-Lexington SC-Richland SC-
405 PM EDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR NORTHWESTERN CALHOUN...CENTRAL LEXINGTON AND CENTRAL RICHLAND
COUNTIES...
At 405 PM EDT, a severe thunderstorm was located over South Congaree,
or near Springdale, moving northeast at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Columbia, Lexington, West Columbia, Cayce, Irmo, Forest Acres,
Batesburg-Leesville, Springdale, St. Andrews, Highway 6 at Lake
Murray Dam, Red Bank, Oak Grove, South Congaree, Pine Ridge, Gaston,
Hopkins, Columbia International University, Harbison State Forest,
Riverbanks Zoo and SC State Farmer's Market.
This includes the following highways...
Interstate 126 between mile markers 0 and 3.
Interstate 20 in South Carolina between mile markers 44 and 70.
Interstate 26 between mile markers 102 and 125.
Interstate 77 between mile markers 0 and 12.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection seek shelter inside a sturdy building and stay
away from windows.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways or
walk through high water.
&&
LAT...LON 3374 8109 3392 8151 3414 8111 3392 8080
TIME...MOT...LOC 2005Z 231DEG 34KT 3392 8115
HAIL...1.00IN
WIND...60MPH
$$
JAQ054
WWUS52 KCAE 042033
SVSCAE
Severe Weather Statement
National Weather Service Columbia SC
433 PM EDT Tue May 4 2021
SCC017-063-079-042042-
/O.CAN.KCAE.SV.W.0032.000000T0000Z-210504T2045Z/
Calhoun SC-Lexington SC-Richland SC-
433 PM EDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CALHOUN...CENTRAL
LEXINGTON AND CENTRAL RICHLAND COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning and produced a 65
mph wind gust at the Columbia Metropolitan Airport has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3374 8109 3392 8151 3414 8111 3392 8080
TIME...MOT...LOC 2029Z 228DEG 30KT 3407 8095
$$
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, 3:54 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, 6:03 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.