Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 49, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Aug 19, 2021, 6:31 PM EDT for Berkeley County, Dorchester County, South Carolina. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 19, 2021, 6:31 PM EDT (22:31 UTC)
- Expired
- Aug 19, 2021, 7:30 PM EDT
- In force
- 59 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Berkeley County, SC, Dorchester County, SC
The radar
The Charleston,SC radar (KCLX), 81 km from the middle of the area, began a volume at 22:30 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.
The nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 10.5 hours before the alert went out and 316 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
- 1604 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 844 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
651
WUUS52 KCHS 192231
SVRCHS
SCC015-035-192330-
/O.NEW.KCHS.SV.W.0049.210819T2231Z-210819T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston SC
631 PM EDT Thu Aug 19 2021
The National Weather Service in Charleston has issued a
* Severe Thunderstorm Warning for portions of...
Berkeley County in southeastern South Carolina...
Dorchester County in southeastern South Carolina...
* Until 730 PM EDT.
* At 631 PM EDT, severe thunderstorms were located along a line
extending from near Ridgeville to 7 miles west of Givhans Ferry
State Park, moving east at 10 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and powerlines.
* Locations impacted include:
Summerville, Moncks Corner, Givhans Ferry State Park, Dorchester,
Ridgeville and Jedburg.
This warning includes I-26 between mile markers 183 and 197.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. If this is not possible, avoid open outdoor
spaces and remain low. Stay away from tall objects such as trees and
utility poles.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.
&&
LAT...LON 3321 7998 3301 8025 3303 8039 3305 8040
3305 8044 3306 8046 3306 8051 3307 8053
3307 8054 3323 8033
TIME...MOT...LOC 2231Z 255DEG 9KT 3317 8030 3307 8049
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$4 follow-up statements
369
WWUS52 KCHS 192245
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
645 PM EDT Thu Aug 19 2021
SCC015-035-192330-
/O.CON.KCHS.SV.W.0049.000000T0000Z-210819T2330Z/
Berkeley SC-Dorchester SC-
645 PM EDT Thu Aug 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR PORTIONS OF BERKELEY AND DORCHESTER COUNTIES...
At 645 PM EDT, severe thunderstorms were located along a line
extending from 6 miles northeast of Ridgeville to near Dorchester,
moving east at 10 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and powerlines.
Locations impacted include:
Summerville, Moncks Corner, Givhans Ferry State Park, Dorchester,
Ridgeville and Jedburg.
This warning includes I-26 between mile markers 183 and 197.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.
&&
LAT...LON 3321 7998 3301 8025 3303 8039 3305 8040
3305 8044 3306 8046 3310 8050 3323 8033
TIME...MOT...LOC 2245Z 254DEG 10KT 3318 8026 3309 8042
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$119
WWUS52 KCHS 192303
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
703 PM EDT Thu Aug 19 2021
SCC015-035-192330-
/O.CON.KCHS.SV.W.0049.000000T0000Z-210819T2330Z/
Berkeley SC-Dorchester SC-
703 PM EDT Thu Aug 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR PORTIONS OF BERKELEY AND DORCHESTER COUNTIES...
At 702 PM EDT, severe thunderstorms were located along a line
extending from 8 miles northeast of Ridgeville to Givhans, moving
east at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and powerlines.
Locations impacted include:
Summerville, Moncks Corner, Givhans Ferry State Park, Ridgeville and
Jedburg.
This warning includes I-26 between mile markers 187 and 197.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, 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.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.
&&
LAT...LON 3321 7998 3301 8025 3303 8039 3305 8039
3309 8040 3323 8028
TIME...MOT...LOC 2302Z 282DEG 12KT 3319 8021 3303 8033
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$042
WWUS52 KCHS 192311
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
711 PM EDT Thu Aug 19 2021
SCC015-035-192330-
/O.CON.KCHS.SV.W.0049.000000T0000Z-210819T2330Z/
Berkeley SC-Dorchester SC-
711 PM EDT Thu Aug 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR PORTIONS OF BERKELEY AND DORCHESTER COUNTIES...
At 711 PM EDT, severe thunderstorms were located along a line
extending from 9 miles west of Pinopolis to near Givhans, moving east
at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and powerlines.
Locations impacted include:
Summerville, Moncks Corner, Ridgeville and Jedburg.
This warning includes I-26 between mile markers 189 and 197.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.
&&
LAT...LON 3321 7998 3301 8025 3302 8034 3305 8035
3309 8035 3323 8023
TIME...MOT...LOC 2311Z 255DEG 9KT 3319 8019 3303 8031
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$218
WWUS52 KCHS 192323
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
723 PM EDT Thu Aug 19 2021
SCC015-035-192332-
/O.EXP.KCHS.SV.W.0049.000000T0000Z-210819T2330Z/
Berkeley SC-Dorchester SC-
723 PM EDT Thu Aug 19 2021
...THE SEVERE THUNDERSTORM WARNING FOR PORTIONS OF BERKELEY AND
DORCHESTER COUNTIES WILL EXPIRE AT 730 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, heavy
rain is still possible with these thunderstorms.
LAT...LON 3321 7998 3301 8025 3302 8034 3305 8035
3309 8035 3323 8023
TIME...MOT...LOC 2322Z 255DEG 9KT 3320 8016 3304 8028
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 5:35 PM EDT | Areal Flood Advisory | CHS | Berkeley, Charleston, Dorchester | 115 min |
| Aug 19, 6:12 PM EDT | Areal Flood Advisory | CHS | Charleston | 60 min |
| Aug 19, 6:25 PM EDT | Special Weather Statement | CHS | Dorchester | 35 min |
| Aug 19, 6:55 PM EDT | Special Weather Statement | CHS | Berkeley | 35 min |
| Aug 19, 7:08 PM EDT | Special Weather Statement | CHS | Berkeley | 37 min |
| Aug 19, 7:28 PM EDT | Special Weather Statement | CHS | Berkeley | 32 min |
| Aug 19, 7:45 PM EDT | Special Weather Statement | CHS | Berkeley | 30 min |
| Aug 19, 7:57 PM EDT | Special Weather Statement | CHS | Berkeley | 33 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.