Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 22, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at May 4, 2021, 4:15 PM EDT for Berkeley County, South Carolina. It was in force for 25 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, 4:15 PM EDT (20:15 UTC)
- Expired
- May 4, 2021, 4:40 PM EDT
- In force
- 25 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Berkeley County, SC
The radar
The Charleston,SC radar (KCLX), 109 km from the middle of the area, began a volume at 20:16 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, 4:17 PM EDT | HAIL 0.25 | 4 Nne Goose Creek, SC | |
| May 4, 4:32 PM EDT | HAIL 0.25 | 3 Nne Goose Creek, SC | MPING REPORT OF PEA SIZED HAIL. |
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, 8.3 hours before the alert went out and 15 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.
213
WUUS52 KCHS 042015
SVRCHS
SCC015-042100-
/O.NEW.KCHS.SV.W.0022.210504T2015Z-210504T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston SC
415 PM EDT Tue May 4 2021
The National Weather Service in Charleston has issued a
* Severe Thunderstorm Warning for portions of...
Berkeley County in southeastern South Carolina...
* Until 500 PM EDT.
* At 415 PM EDT, severe thunderstorms were located along a line
extending from near Sangaree to near Naval Weapons Station
Charleston, moving northeast at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and powerlines.
* Locations impacted include...
Summerville, Goose Creek, Moncks Corner, Naval Weapons Station
Charleston, Ladson, Sangaree, Crowfield Plantation and College
Park.
This warning includes I-26 between mile markers 198 and 200.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.
&&
LAT...LON 3305 7972 3292 7994 3298 8004 3300 8005
3299 8007 3306 8019 3320 8002
TIME...MOT...LOC 2015Z 230DEG 26KT 3306 8010 3297 7990
HAIL...1.00IN
WIND...60MPH
$$3 follow-up statements
448 WWUS52 KCHS 042027 SVSCHS Severe Weather Statement National Weather Service Charleston SC 427 PM EDT Tue May 4 2021 SCC015-042100- /O.CON.KCHS.SV.W.0022.000000T0000Z-210504T2100Z/ Berkeley SC- 427 PM EDT Tue May 4 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR BERKELEY COUNTY... At 427 PM EDT, severe thunderstorms were located along a line extending from near Sangaree to near Huger, moving northeast at 20 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to trees and powerlines. Locations impacted include... Goose Creek and Moncks Corner. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Report damage directly to the Charleston National Weather Service at 888-383-2024 when it is safe to do so. && LAT...LON 3296 7987 3308 8013 3320 8002 3305 7972 TIME...MOT...LOC 2027Z 243DEG 18KT 3310 8007 3304 7984 HAIL...0.75IN WIND...60MPH $$
952
WWUS52 KCHS 042027 RRA
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
427 PM EDT Tue May 4 2021
SCC015-042100-
/O.CON.KCHS.SV.W.0022.000000T0000Z-210504T2100Z/
Berkeley SC-
427 PM EDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR BERKELEY COUNTY...
At 427 PM EDT, severe thunderstorms were located along a line
extending from near Sangaree to near Huger, moving northeast at 20
mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and powerlines.
Locations impacted include...
Goose Creek and Moncks Corner.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.
&&
LAT...LON 3296 7987 3308 8013 3320 8002 3305 7972
TIME...MOT...LOC 2027Z 243DEG 18KT 3310 8007 3304 7984
HAIL...1.00IN
WIND...60MPH
$$714
WWUS52 KCHS 042040
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
440 PM EDT Tue May 4 2021
SCC015-042049-
/O.CAN.KCHS.SV.W.0022.000000T0000Z-210504T2100Z/
Berkeley SC-
440 PM EDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR BERKELEY COUNTY IS
CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore the warning has
been cancelled.
Remember, a Severe Thunderstorm Warning still remains in effect for
areasacross northeast Berkeley County.
LAT...LON 3296 7987 3308 8013 3320 8002 3305 7972
TIME...MOT...LOC 2038Z 230DEG 26KT 3316 7999 3310 7976
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 8:15 PM EDT | Areal Flood Advisory | CHS | Allendale, Berkeley, Colleton, Dorchester, Hampton | 2 hr |
| May 3, 8:26 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley, Charleston | 38 min |
| May 3, 9:15 PM EDT | Special Marine Warning | CHS | 60 min | |
| May 3, 10:00 PM EDT | Special Marine Warning | CHS | 2 hr | |
| May 4, 3:38 PM EDT | Special Weather Statement | CHS | Charleston | 37 min |
| May 4, 4:08 PM EDT | Special Weather Statement | CHS | Berkeley | 37 min |
| May 4, 4:30 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley | 20 min |
| May 4, 4:32 PM EDT | Special Weather Statement | CHS | Dorchester | 28 min |
| May 4, 6:11 PM EDT | Special Weather Statement | CHS | Colleton | 49 min |
| May 4, 6:17 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley, Charleston, Colleton, Dorchester | 58 min |
| May 4, 6:59 PM EDT | Severe Thunderstorm Warning | CHS | Colleton, Dorchester | 46 min |
| May 4, 7:07 PM EDT | Special Weather Statement | CHS | Berkeley | 38 min |
| May 4, 7:40 PM EDT | Special Weather Statement | CHS | Berkeley, Dorchester | 35 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.