Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 31, NWS Charleston, SC

June 15, 2021Berkeley County, South Carolina

NWS Charleston, SC issued this severe thunderstorm warning at Jun 15, 2021, 7:00 PM EDT for Berkeley County, South Carolina. It was in force for 45 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: Jun 15, 2021, 7:00 PM EDT (23:00 UTC)
Expired: Jun 15, 2021, 7:45 PM EDT
In force: 45 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Berkeley County, SC

The radar

The Columbia radar (KCAE), 116 km from the middle of the area, began a volume at 23:00 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, 7:39 PM EDT	TSTM WND DMG	1 Ene Moncks Corner, SC	THE PUBLIC REPORTED A LARGE BRANCH SPLIT OFF A TREE NEAR THE INTERSECTION OF HIGHWAY 52 AND 17A.
Jun 15, 7:40 PM EDT	TSTM WND GST 62	4 Nnw Moncks Corner, SC	MEASURED BY NWS WIND EQUIPMENT ALONG THE SOUTH SIDE OF LAKE MOULTRIE.

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, 11.0 hours before the alert went out and 54 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.

983 
WUUS52 KCHS 152300
SVRCHS
SCC015-152345-
/O.NEW.KCHS.SV.W.0031.210615T2300Z-210615T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston SC
700 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...

* Until 745 PM EDT.

* At 700 PM EDT, severe thunderstorms were located along a line
  extending from near Eadytown to near Holly Hill, 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...
  Moncks Corner, Saint Stephen, Bonneau, Southern Lake Moultrie,
  Eadytown, Cross, Northern Lake Moultrie, Bonneau Beach, Old Santee
  Canal State Park, Eastern Lake Marion and Pinopolis.

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 3345 7988 3340 7986 3337 7980 3338 7979
      3333 7975 3303 8008 3322 8034 3327 8036
      3327 8030 3330 8025 3345 8022 3345 8014
      3348 8015 3350 8012 3350 8009 3351 8008
      3351 7999
TIME...MOT...LOC 2300Z 299DEG 24KT 3347 8013 3330 8035 

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

ETM

1 follow-up statement

054 
WWUS52 KCHS 152327
SVSCHS

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

SCC015-152345-
/O.CON.KCHS.SV.W.0031.000000T0000Z-210615T2345Z/
Berkeley SC-
727 PM EDT Tue Jun 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR BERKELEY COUNTY...

At 727 PM EDT, severe thunderstorms were located along a line
extending from near Northern Lake Moultrie to 7 miles southwest of
Cross, moving southeast at 25 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and powerlines.

Locations impacted include...
Moncks Corner, Saint Stephen, Bonneau, Southern Lake Moultrie,
Eadytown, Cross, Northern Lake Moultrie, Bonneau Beach, Old Santee
Canal State Park, Eastern Lake Marion and Pinopolis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3345 7988 3340 7986 3337 7980 3338 7979
      3333 7975 3303 8008 3322 8034 3327 8036
      3327 8030 3330 8025 3345 8022 3345 8014
      3348 8015 3350 8012 3350 8009 3351 8008
      3351 7999
TIME...MOT...LOC 2327Z 301DEG 21KT 3342 8006 3323 8021 

HAIL...0.75IN
WIND...60MPH
 
$$

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, 4:37 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Dorchester	38 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, 7:09 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.