Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 48, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Aug 2, 2021, 8:25 PM EDT for Colleton County, Dorchester County, South Carolina. It was in force for 65 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
- Aug 2, 2021, 8:25 PM EDT (00:25 UTC)
- Expired
- Aug 2, 2021, 9:30 PM EDT
- In force
- 65 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Colleton County, SC, Dorchester County, SC
The radar
The Charleston,SC radar (KCLX), 52 km from the middle of the area, began a volume at 00:25 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 |
|---|---|---|---|
| Aug 2, 8:31 PM EDT | TSTM WND DMG | 3 E Canadys, SC | SOUTH CAROLINA HIGHWAY PATROL REPORTS A TREE DOWN NEAR THE INTERSECTION OF AUGUSTA HIGHWAY AND BYRD FARM ROAD. TIME ESTIMATED BASED ON RADAR. |
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 00:00Z, 0.4 hours before the alert went out and 77 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
- 1210 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 850 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -48 m²/s²
- 0-3 km storm-relative helicity
- -19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
483
WUUS52 KCHS 030025
SVRCHS
SCC029-035-030130-
/O.NEW.KCHS.SV.W.0048.210803T0025Z-210803T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston SC
825 PM EDT Mon Aug 2 2021
The National Weather Service in Charleston has issued a
* Severe Thunderstorm Warning for portions of...
Colleton County in southeastern South Carolina...
Dorchester County in southeastern South Carolina...
* Until 930 PM EDT.
* At 825 PM EDT, a severe thunderstorm was located near Canadys,
moving northwest at 5 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...
Colleton, Smoaks, Lodge, Williams, Round O, Ruffin, Padgetts and
Canadys.
This warning includes I-95 in South Carolina between mile markers 61
and 73.
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 this storm, 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 3305 8050 3293 8054 3305 8104 3310 8095
3310 8093 3306 8090 3309 8088 3310 8089
3313 8089 3321 8074
TIME...MOT...LOC 0025Z 115DEG 5KT 3301 8060
HAIL...1.00IN
WIND...60MPH
$$3 follow-up statements
283
WWUS52 KCHS 030047
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
847 PM EDT Mon Aug 2 2021
SCC029-035-030130-
/O.CON.KCHS.SV.W.0048.000000T0000Z-210803T0130Z/
Colleton SC-Dorchester SC-
847 PM EDT Mon Aug 2 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR COLLETON AND DORCHESTER COUNTIES...
At 847 PM EDT, a severe thunderstorm was located over Canadys, moving
northwest at 5 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and powerlines.
Locations impacted include...
Colleton, Smoaks, Lodge, Williams, Round O, Ruffin, Padgetts and
Canadys.
This warning includes I-95 in South Carolina between mile markers 61
and 73.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3305 8050 3293 8054 3305 8104 3310 8095
3310 8093 3306 8090 3309 8088 3310 8089
3313 8089 3321 8074
TIME...MOT...LOC 0047Z 115DEG 5KT 3302 8063
HAIL...<.75IN
WIND...60MPH
$$783
WWUS52 KCHS 030110
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
910 PM EDT Mon Aug 2 2021
SCC029-035-030130-
/O.CON.KCHS.SV.W.0048.000000T0000Z-210803T0130Z/
Colleton SC-Dorchester SC-
910 PM EDT Mon Aug 2 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR COLLETON AND DORCHESTER COUNTIES...
At 910 PM EDT, a severe thunderstorm was located over Canadys, moving
northwest at 5 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and powerlines.
Locations impacted include...
Colleton, Smoaks, Lodge, Williams, Ruffin, Padgetts and Canadys.
This warning includes I-95 in South Carolina between mile markers 61
and 73.
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 this storm.
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 this storm, 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 3309 8056 3296 8065 3305 8104 3310 8095
3310 8093 3306 8090 3309 8088 3310 8089
3313 8089 3321 8074
TIME...MOT...LOC 0110Z 131DEG 6KT 3307 8067
HAIL...<.75IN
WIND...60MPH
$$770
WWUS52 KCHS 030122
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
922 PM EDT Mon Aug 2 2021
SCC029-035-030132-
/O.EXP.KCHS.SV.W.0048.000000T0000Z-210803T0130Z/
Colleton SC-Dorchester SC-
922 PM EDT Mon Aug 2 2021
...THE SEVERE THUNDERSTORM WARNING FOR PORTIONS OF COLLETON AND
DORCHESTER COUNTIES WILL EXPIRE AT 930 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning will be allowed to expire. However gusty winds
are still possible with this thunderstorm.
LAT...LON 3309 8056 3296 8065 3305 8104 3310 8095
3310 8093 3306 8090 3309 8088 3310 8089
3313 8089 3321 8074
TIME...MOT...LOC 0122Z 115DEG 5KT 3308 8069
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 8:55 PM EDT | Areal Flood Advisory | CHS | Colleton, Dorchester | 95 min |
| Aug 2, 10:11 PM EDT | Special Marine Warning | CHS | 2 hr | |
| Aug 3, 3:02 AM EDT | Flash Flood Watch | CHS | Berkeley, Colleton, Dorchester, Hampton | 19 hr |
| Aug 3, 8:42 AM EDT | Special Marine Warning | CHS | 2 hr | |
| Aug 3, 5:34 PM EDT | Areal Flood Advisory | CHS | Charleston | 87 min |
| Aug 3, 6:36 PM EDT | Areal Flood Advisory | CHS | Colleton | 82 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.