Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 10, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Mar 31, 2021, 5:58 PM EDT for Berkeley County, Colleton County, Dorchester County, South Carolina. It was in force for 62 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
- Mar 31, 2021, 5:58 PM EDT (21:58 UTC)
- Expired
- Mar 31, 2021, 7:00 PM EDT
- In force
- 62 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Berkeley County, SC, Colleton County, SC, Dorchester County, SC
The radar
The Charleston,SC radar (KCLX), 66 km from the middle of the area, began a volume at 22:01 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 |
|---|---|---|---|
| Mar 31, 6:34 PM EDT | HAIL 0.75 | 3 S Dorchester, SC | PEA TO DIME SIZED HAIL REPORTED OFF ZION ROAD. |
| Mar 31, 7:01 PM EDT | HAIL 0.75 | 3 W Givhans, SC | 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 12:00Z, 10.0 hours before the alert went out and 47 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
- 717 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 567 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
996
WUUS52 KCHS 312158
SVRCHS
SCC015-029-035-312300-
/O.NEW.KCHS.SV.W.0010.210331T2158Z-210331T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston SC
558 PM EDT Wed Mar 31 2021
The National Weather Service in Charleston has issued a
* Severe Thunderstorm Warning for portions of...
Colleton County in southeastern South Carolina...
Berkeley County in southeastern South Carolina...
Dorchester County in southeastern South Carolina...
* Until 700 PM EDT.
* At 556 PM EDT, a severe thunderstorm was located over Canadys,
moving east at 25 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated. Quarter sized hail was also reported
near Canadys.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and powerlines.
* Locations impacted include...
Summerville, Givhans Ferry State Park, Dorchester, Ridgeville,
Cottageville, Givhans, Jedburg, Canadys and Knightsville.
This warning includes...
I-26 between mile markers 186 and 197.
I-95 in South Carolina between mile markers 62 and 73.
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 3298 8068 3314 8069 3317 8018 3286 8019
TIME...MOT...LOC 2156Z 276DEG 21KT 3306 8059
HAIL...1.25IN
WIND...60MPH
$$
SPR3 follow-up statements
015
WWUS52 KCHS 312216
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
616 PM EDT Wed Mar 31 2021
SCC015-029-035-312300-
/O.CON.KCHS.SV.W.0010.000000T0000Z-210331T2300Z/
Colleton SC-Berkeley SC-Dorchester SC-
616 PM EDT Wed Mar 31 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR COLLETON...BERKELEY AND DORCHESTER COUNTIES...
At 615 PM EDT, a severe thunderstorm was located near Givhans Ferry
State Park, moving east at 25 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and powerlines.
Locations impacted include...
Summerville, Givhans Ferry State Park, Ridgeville, Cottageville,
Givhans, Jedburg, Canadys and Knightsville.
This warning includes...
I-26 between mile markers 187 and 197.
I-95 in South Carolina between mile markers 62 and 63.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.
&&
LAT...LON 3298 8068 3310 8063 3317 8018 3286 8019
TIME...MOT...LOC 2215Z 276DEG 21KT 3305 8045
HAIL...1.25IN
WIND...60MPH
$$
SPR163
WWUS52 KCHS 312234
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
634 PM EDT Wed Mar 31 2021
SCC015-029-035-312300-
/O.CON.KCHS.SV.W.0010.000000T0000Z-210331T2300Z/
Colleton SC-Berkeley SC-Dorchester SC-
634 PM EDT Wed Mar 31 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR COLLETON...BERKELEY AND DORCHESTER COUNTIES...
At 633 PM EDT, a severe thunderstorm was located over Givhans Ferry
State Park, moving east 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...
Summerville, Givhans Ferry State Park, Ridgeville, Cottageville,
Givhans, Jedburg, Canadys and Knightsville.
This warning includes...
I-26 between mile markers 187 and 197.
I-95 in South Carolina between mile markers 62 and 63.
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.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.
&&
LAT...LON 3298 8068 3310 8063 3317 8018 3286 8019
TIME...MOT...LOC 2233Z 272DEG 19KT 3306 8036
HAIL...1.00IN
WIND...60MPH
$$541
WWUS52 KCHS 312259
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
659 PM EDT Wed Mar 31 2021
SCC015-029-035-312309-
/O.EXP.KCHS.SV.W.0010.000000T0000Z-210331T2300Z/
Colleton SC-Berkeley SC-Dorchester SC-
659 PM EDT Wed Mar 31 2021
...THE SEVERE THUNDERSTORM WARNING FOR COLLETON...BERKELEY AND
DORCHESTER COUNTIES WILL EXPIRE AT 700 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning will be allowed to expire. However lightning
is still occurring with this thunderstorm.
LAT...LON 3298 8068 3310 8063 3317 8018 3286 8019
TIME...MOT...LOC 2259Z 276DEG 21KT 3305 8021
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 9:08 PM EDT | Coastal Flood Statement | CHS | 3 hr | |
| Mar 31, 3:17 AM EDT | Small Craft Advisory | CHS | 65 hr | |
| Mar 31, 11:32 AM EDT | Marine Dense Fog Advisory | CHS | 6 hr | |
| Mar 31, 2:05 PM EDT | Small Craft Advisory | CHS | 6 hr | |
| Mar 31, 4:04 PM EDT | Special Weather Statement | CHS | Allendale | 26 min |
| Mar 31, 4:26 PM EDT | Special Weather Statement | CHS | Allendale | 34 min |
| Mar 31, 4:57 PM EDT | Special Weather Statement | CHS | Dorchester | 33 min |
| Mar 31, 5:32 PM EDT | Severe Thunderstorm Warning | CHS | Colleton, Dorchester | 58 min |
| Mar 31, 6:37 PM EDT | Special Weather Statement | CHS | Berkeley | 23 min |
| Mar 31, 7:34 PM EDT | Special Weather Statement | CHS | Berkeley | 26 min |
| Mar 31, 7:37 PM EDT | Special Weather Statement | CHS | Colleton | 23 min |
| Mar 31, 7:53 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley, Charleston | 67 min |
| Mar 31, 7:54 PM EDT | Severe Thunderstorm Warning | CHS | Charleston, Colleton, Dorchester | 66 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.