Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 21, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at May 3, 2021, 8:26 PM EDT for Berkeley County, Charleston County, South Carolina. It was in force for 38 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
- May 3, 2021, 8:26 PM EDT (00:26 UTC)
- Expired
- May 3, 2021, 9:04 PM EDT
- In force
- 38 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Berkeley County, SC, Charleston County, SC
The radar
The Wilmington radar (KLTX), 131 km from the middle of the area, began a volume at 00:28 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
Charleston AFB, SC (KCHS), launched 00:00Z, 0.4 hours before the alert went out and 60 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
- 384 J/kg
- Mixed-layer CIN
- -93 J/kg
- Mixed-layer LCL
- 1346 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.8
The text
As transmitted.
149
WUUS52 KCHS 040026
SVRCHS
SCC015-019-040130-
/O.NEW.KCHS.SV.W.0021.210504T0026Z-210504T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston SC
826 PM EDT Mon May 3 2021
The National Weather Service in Charleston has issued a
* Severe Thunderstorm Warning for portions of...
Charleston County in southeastern South Carolina...
Berkeley County in southeastern South Carolina...
* Until 930 PM EDT.
* At 826 PM EDT, a severe thunderstorm was located near Bethera,
moving east at 35 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...
McClellanville, Santee Coastal Reserve and Hampton Plantation State
Park.
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 3310 7927 3307 7931 3305 7931 3307 7969
3313 7964 3329 7965 3327 7956 3324 7950
3325 7948 3323 7948 3324 7946 3322 7945
3322 7944 3316 7937 3314 7927
TIME...MOT...LOC 0026Z 267DEG 31KT 3321 7972
HAIL...1.00IN
WIND...60MPH
$$2 follow-up statements
243
WWUS52 KCHS 040048
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
848 PM EDT Mon May 3 2021
SCC015-019-040130-
/O.CON.KCHS.SV.W.0021.000000T0000Z-210504T0130Z/
Charleston SC-Berkeley SC-
848 PM EDT Mon May 3 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR CHARLESTON AND BERKELEY COUNTIES...
At 848 PM EDT, a severe thunderstorm was located over Hampton
Plantation State Park, moving east at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and powerlines.
Locations impacted include...
McClellanville, Santee Coastal Reserve and Hampton Plantation State
Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.
&&
LAT...LON 3307 7931 3310 7954 3327 7957 3325 7953
3324 7949 3325 7948 3323 7948 3324 7946
3322 7945 3322 7944 3316 7937 3314 7928
3310 7927
TIME...MOT...LOC 0048Z 274DEG 33KT 3319 7947
HAIL...1.00IN
WIND...60MPH
$$639
WWUS52 KCHS 040104
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
904 PM EDT Mon May 3 2021
SCC015-019-040114-
/O.CAN.KCHS.SV.W.0021.000000T0000Z-210504T0130Z/
Charleston SC-Berkeley SC-
904 PM EDT Mon May 3 2021
...THE SEVERE THUNDERSTORM WARNING FOR CHARLESTON AND BERKELEY
COUNTIES IS CANCELLED...
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.
LAT...LON 3307 7931 3310 7954 3327 7957 3325 7953
3324 7949 3325 7948 3323 7948 3324 7946
3322 7945 3322 7944 3316 7937 3314 7928
3310 7927
TIME...MOT...LOC 0102Z 267DEG 31KT 3320 7930
$$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, 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, 4:15 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley | 25 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.