Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 30, NWS Charleston, SC

June 15, 2021Berkeley County, Dorchester County, South Carolina

NWS Charleston, SC issued this severe thunderstorm warning at Jun 15, 2021, 4:37 PM EDT for Berkeley County, Dorchester County, South Carolina. It was in force for 38 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: Jun 15, 2021, 4:37 PM EDT (20:37 UTC)
Expired: Jun 15, 2021, 5:15 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, Dorchester County, SC

The radar

The Charleston,SC radar (KCLX), 96 km from the middle of the area, began a volume at 20:36 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
Jun 15, 4:50 PM EDT	HAIL 1.25	6 Nne Jedburg, SC	THE PUBLIC MEASURED HAIL THE SIZE OF A HALF DOLLAR COIN.
Jun 15, 4:52 PM EDT	HAIL 0.75	4 Ne Jedburg, SC	THE MEDIA RELAYED PICTURES SHOWING PENNY SIZE HAIL ALONG NEW HOPE DRIVE.
Jun 15, 5:10 PM EDT	HAIL 0.88	5 N Sangaree, SC	THE PUBLIC REPORTED NICKEL SIZE HAIL NEAR CANE BAY.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 15, 1:58 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.6 hours before the alert went out and 26 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1323 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1170 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

458 
WUUS52 KCHS 152037
SVRCHS
SCC015-035-152115-
/O.NEW.KCHS.SV.W.0030.210615T2037Z-210615T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston SC
437 PM EDT Tue Jun 15 2021

The National Weather Service in Charleston has issued a

* Severe Thunderstorm Warning for portions of...
  Berkeley County in southeastern South Carolina...
  Dorchester County in southeastern South Carolina...

* Until 515 PM EDT.

* At 436 PM EDT, a severe thunderstorm was located near Dorchester,
  moving southeast at 30 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, Goose Creek, Moncks Corner, Ladson, Ridgeville,
  Sangaree, Crowfield Plantation, Jedburg, Old Santee Canal State
  Park and College Park.

This warning includes I-26 between mile markers 182 and 204.
 
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 3317 7987 3299 8010 3300 8010 3302 8015
      3301 8018 3299 8015 3300 8013 3299 8012
      3296 8015 3319 8041 3328 8035 3327 8030
      3329 8027
TIME...MOT...LOC 2036Z 300DEG 26KT 3320 8030 

HAIL...1.00IN
WIND...60MPH
 
$$

ETM

2 follow-up statements

136 
WWUS52 KCHS 152047
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
447 PM EDT Tue Jun 15 2021

SCC015-035-152115-
/O.CON.KCHS.SV.W.0030.000000T0000Z-210615T2115Z/
Berkeley SC-Dorchester SC-
447 PM EDT Tue Jun 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR BERKELEY AND DORCHESTER COUNTIES...

At 446 PM EDT, a severe thunderstorm was located 7 miles northeast of
Ridgeville, moving southeast at 30 mph.

HAZARD...Two inch hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to trees and powerlines.

Locations impacted include...
Summerville, Goose Creek, Moncks Corner, Ladson, Sangaree, Crowfield
Plantation, Jedburg, Old Santee Canal State Park and College Park.

This warning includes I-26 between mile markers 186 and 204.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.

&&

LAT...LON 3317 7987 3299 8010 3300 8010 3302 8015
      3301 8018 3299 8015 3300 8013 3299 8012
      3296 8015 3316 8036 3320 8032 3327 8026
TIME...MOT...LOC 2046Z 300DEG 26KT 3316 8022 

HAIL...2.00IN
WIND...60MPH
 
$$

ETM

021 
WWUS52 KCHS 152105
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
505 PM EDT Tue Jun 15 2021

SCC035-152114-
/O.CAN.KCHS.SV.W.0030.000000T0000Z-210615T2115Z/
Dorchester SC-
505 PM EDT Tue Jun 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR DORCHESTER COUNTY IS
CANCELLED...
    
The immediate risk for severe weather has ended. 

LAT...LON 3317 7987 3300 8009 3300 8010 3302 8015
      3304 8017 3304 8018 3308 8023 3323 8011
TIME...MOT...LOC 2104Z 300DEG 26KT 3309 8008 

$$

SCC015-152115-
/O.CON.KCHS.SV.W.0030.000000T0000Z-210615T2115Z/
Berkeley SC-
505 PM EDT Tue Jun 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR BERKELEY COUNTY...

At 504 PM EDT, a severe thunderstorm was located near Sangaree,
moving southeast at 30 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, Goose Creek, Moncks Corner, Ladson, Sangaree, Old Santee
Canal State Park, College Park and Crowfield Plantation.

This warning includes I-26 between mile markers 195 and 204.
 
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 3317 7987 3300 8009 3300 8010 3302 8015
      3304 8017 3304 8018 3308 8023 3323 8011
TIME...MOT...LOC 2104Z 300DEG 26KT 3309 8008 

HAIL...1.00IN
WIND...60MPH
 
$$

ETM

The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 15, 2:54 AM EDT	Small Craft Advisory	CHS		28 hr
Jun 15, 4:27 PM EDT	Special Weather Statement	CHS	Berkeley	33 min
Jun 15, 5:13 PM EDT	Special Weather Statement	CHS	Charleston	32 min
Jun 15, 5:44 PM EDT	Special Weather Statement	CHS	Charleston	31 min
Jun 15, 5:52 PM EDT	Special Marine Warning	CHS		68 min
Jun 15, 6:27 PM EDT	Special Marine Warning	CHS		63 min
Jun 15, 6:57 PM EDT	Special Marine Warning	CHS		33 min
Jun 15, 7:00 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley	45 min
Jun 15, 7:09 PM EDT	Special Weather Statement	CHS	Jasper	36 min
Jun 15, 7:15 PM EDT	Special Weather Statement	CHS	Allendale	30 min
Jun 15, 7:26 PM EDT	Special Marine Warning	CHS		64 min
Jun 15, 7:37 PM EDT	Special Weather Statement	CHS	Charleston	23 min
Jun 15, 7:42 PM EDT	Special Marine Warning	CHS		2 hr
Jun 15, 7:43 PM EDT	Special Weather Statement	CHS	Charleston	32 min
Jun 15, 7:44 PM EDT	Special Marine Warning	CHS		46 min
Jun 15, 7:46 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Charleston	59 min
Jun 15, 7:54 PM EDT	Special Weather Statement	CHS	Berkeley	36 min
Jun 15, 7:58 PM EDT	Areal Flood Advisory	CHS	Charleston	3 hr

Nearby

Severe Thunderstorm Warnings in South Carolina, 2021 Every 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.