Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 50, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Aug 31, 2021, 3:42 PM EDT for 4 counties in South Carolina. It was in force for 48 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 31, 2021, 3:42 PM EDT (19:42 UTC)
- Expired
- Aug 31, 2021, 4:30 PM EDT
- In force
- 48 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Beaufort County, SC, Colleton County, SC, Hampton County, SC, Jasper County, SC
The radar
The Charleston,SC radar (KCLX), 28 km from the middle of the area, began a volume at 19:41 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 12:00Z, 7.7 hours before the alert went out and 87 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
- 327 J/kg
- Mixed-layer CIN
- -117 J/kg
- Mixed-layer LCL
- 1012 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
420
WUUS52 KCHS 311942
SVRCHS
SCC013-029-049-053-312030-
/O.NEW.KCHS.SV.W.0050.210831T1942Z-210831T2030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston SC
342 PM EDT Tue Aug 31 2021
The National Weather Service in Charleston has issued a
* Severe Thunderstorm Warning for portions of...
Beaufort County in southeastern South Carolina...
Hampton County in southeastern South Carolina...
Colleton County in southeastern South Carolina...
Jasper County in southeastern South Carolina...
* Until 430 PM EDT.
* At 342 PM EDT, severe thunderstorms were located along a line
extending from near Crocketville to near Tarboro, moving northeast
at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and powerlines.
* Locations impacted include:
Hampton, Yemassee, Colleton, Varnville, Smoaks, Williams,
Coosawhatchie, Ruffin, Miley, Grays, Ashton, Islandton, Padgetts,
Early Branch and Cummings.
This warning includes I-95 in South Carolina between mile markers 29
and 46.
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 3264 8077 3248 8115 3285 8110 3301 8104
3307 8091 3306 8090 3308 8089 3312 8081
TIME...MOT...LOC 1942Z 212DEG 17KT 3289 8102 3255 8107
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$3 follow-up statements
228
WWUS52 KCHS 312003
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
403 PM EDT Tue Aug 31 2021
SCC013-053-312013-
/O.CAN.KCHS.SV.W.0050.000000T0000Z-210831T2030Z/
Beaufort SC-Jasper SC-
403 PM EDT Tue Aug 31 2021
...THE SEVERE THUNDERSTORM WARNING FOR PORTIONS OF BEAUFORT AND
JASPER COUNTIES IS CANCELLED...
The immediate risk for severe weather has ended.
LAT...LON 3304 8080 3286 8089 3272 8110 3302 8101
3307 8091 3306 8090 3308 8089 3312 8081
TIME...MOT...LOC 2003Z 218DEG 22KT 3305 8092 3275 8106
$$
SCC029-049-312030-
/O.CON.KCHS.SV.W.0050.000000T0000Z-210831T2030Z/
Hampton SC-Colleton SC-
403 PM EDT Tue Aug 31 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR PORTIONS OF HAMPTON AND COLLETON COUNTIES...
At 403 PM EDT, severe thunderstorms were located along a line
extending from near Lodge to near Cummings, moving northeast at 25
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and powerlines.
Locations impacted include:
Colleton, Smoaks, Williams, Islandton, Padgetts, Ashton, Almeda
Intersection and Miley.
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 3304 8080 3286 8089 3272 8110 3302 8101
3307 8091 3306 8090 3308 8089 3312 8081
TIME...MOT...LOC 2003Z 218DEG 22KT 3305 8092 3275 8106
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$776
WWUS52 KCHS 312013
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
413 PM EDT Tue Aug 31 2021
SCC049-312023-
/O.CAN.KCHS.SV.W.0050.000000T0000Z-210831T2030Z/
Hampton SC-
413 PM EDT Tue Aug 31 2021
...THE SEVERE THUNDERSTORM WARNING FOR PORTIONS OF HAMPTON COUNTY IS
CANCELLED...
The immediate risk for severe weather has ended.
LAT...LON 3290 8087 3301 8101 3302 8101 3307 8091
3306 8090 3308 8089 3312 8081 3304 8080
TIME...MOT...LOC 2013Z 213DEG 27KT 3303 8088
$$
SCC029-312030-
/O.CON.KCHS.SV.W.0050.000000T0000Z-210831T2030Z/
Colleton SC-
413 PM EDT Tue Aug 31 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR PORTIONS OF COLLETON COUNTY...
At 413 PM EDT, a severe thunderstorm was located over Colleton,
moving northeast at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and powerlines.
Locations impacted include:
Colleton, Smoaks, Williams, Padgetts and Ashton.
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 3290 8087 3301 8101 3302 8101 3307 8091
3306 8090 3308 8089 3312 8081 3304 8080
TIME...MOT...LOC 2013Z 213DEG 27KT 3303 8088
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$748
WWUS52 KCHS 312025
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
425 PM EDT Tue Aug 31 2021
SCC029-312034-
/O.EXP.KCHS.SV.W.0050.000000T0000Z-210831T2030Z/
Colleton SC-
425 PM EDT Tue Aug 31 2021
...THE SEVERE THUNDERSTORM WARNING FOR PORTIONS OF COLLETON COUNTY
WILL EXPIRE AT 430 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However, gusty of
45 to 55 mph winds are still possible with this thunderstorm as it
moves across far northern Colleton County. This includes the
communities of Smoaks, Padgetts and Williams.
LAT...LON 3290 8087 3301 8101 3302 8101 3307 8091
3306 8090 3308 8089 3312 8081 3304 8080
TIME...MOT...LOC 2024Z 212DEG 17KT 3307 8085
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 2:43 PM EDT | Special Marine Warning | CHS | 47 min | |
| Aug 31, 3:04 PM EDT | Special Weather Statement | CHS | Hampton | 26 min |
| Aug 31, 3:20 PM EDT | Special Weather Statement | CHS | Jasper | 25 min |
| Aug 31, 3:22 PM EDT | Small Craft Advisory | CHS | 38 hr | |
| Aug 31, 3:50 PM EDT | Special Marine Warning | CHS | 55 min | |
| Aug 31, 4:21 PM EDT | Special Marine Warning | CHS | 54 min | |
| Aug 31, 4:27 PM EDT | Special Weather Statement | CHS | Dorchester | 33 min |
| Aug 31, 4:38 PM EDT | Special Weather Statement | CHS | Hampton | 37 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.