Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 27, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at May 11, 2021, 7:13 PM EDT for Berkeley County, South Carolina. It was in force for 47 min. 3 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
- May 11, 2021, 7:13 PM EDT (23:13 UTC)
- Expired
- May 11, 2021, 8:00 PM EDT
- In force
- 47 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Berkeley County, SC
The radar
The Charleston,SC radar (KCLX), 131 km from the middle of the area, began a volume at 23:17 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 |
|---|---|---|---|
| May 11, 7:14 PM EDT | HAIL 1.75 | 1 Se Moncks Corner, SC | SPOTTER REPORTED HAIL RANGING FROM MARBLE TO GOLF BALL SIZE IN MONCKS CORNER. |
| May 11, 7:15 PM EDT | HAIL 1 | 2 Ese Moncks Corner, SC | |
| May 11, 7:20 PM EDT | HAIL 0.75 | 3 E Moncks Corner, SC | SPOTTER REPORTED PENNY SIZE HAIL NEAR SANTEE CANAL PARK IN MONCKS CORNER. |
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, 11.2 hours before the alert went out and 32 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
- 40 J/kg
- Mixed-layer CIN
- -91 J/kg
- Mixed-layer LCL
- 1089 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
660
WUUS52 KCHS 112313
SVRCHS
SCC015-120000-
/O.NEW.KCHS.SV.W.0027.210511T2313Z-210512T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston SC
713 PM EDT Tue May 11 2021
The National Weather Service in Charleston has issued a
* Severe Thunderstorm Warning for portions of...
Berkeley County in southeastern South Carolina...
* Until 800 PM EDT.
* At 713 PM EDT, a severe thunderstorm was located over Moncks
Corner, moving southeast 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...
Moncks Corner, Old Santee Canal State Park and Huger.
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 3314 7960 3313 7961 3314 7962 3312 7965
3309 7966 3304 7972 3301 7973 3299 7977
3295 7977 3294 7979 3311 8007 3327 7996
TIME...MOT...LOC 2313Z 300DEG 22KT 3319 8001
HAIL...1.25IN
WIND...60MPH
$$
DPB2 follow-up statements
170
WWUS52 KCHS 112336
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
736 PM EDT Tue May 11 2021
SCC015-120000-
/O.CON.KCHS.SV.W.0027.000000T0000Z-210512T0000Z/
Berkeley SC-
736 PM EDT Tue May 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR BERKELEY COUNTY...
At 735 PM EDT, a severe thunderstorm was located near Huger, moving
southeast at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated. This storm has a history of producing
penny to nickel size hail.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and powerlines.
Locations impacted include...
Huger.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.
&&
LAT...LON 3309 8001 3323 7987 3311 7965 3309 7966
3304 7972 3301 7973 3299 7977 3295 7977
3294 7979 3304 7995
TIME...MOT...LOC 2335Z 309DEG 22KT 3311 7987
HAIL...1.00IN
WIND...60MPH
$$
JRL840
WWUS52 KCHS 112352
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
752 PM EDT Tue May 11 2021
SCC015-120002-
/O.EXP.KCHS.SV.W.0027.000000T0000Z-210512T0000Z/
Berkeley SC-
752 PM EDT Tue May 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR BERKELEY COUNTY WILL EXPIRE AT
800 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 small hail
is still possible with this thunderstorm.
LAT...LON 3309 8001 3323 7987 3311 7965 3309 7966
3304 7972 3301 7973 3299 7977 3295 7977
3294 7979 3304 7995
TIME...MOT...LOC 2352Z 306DEG 20KT 3306 7985
$$
JRLThe office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 3:21 AM EDT | Small Craft Advisory | CHS | 5 days | |
| May 11, 3:36 PM EDT | Lake Wind Advisory | CHS | Berkeley | 34 hr |
| May 11, 6:33 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley | 57 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.