Alert archive / South Carolina / Tornado Warnings in 2021

Tornado Warning 11, NWS Charleston, SC

July 8, 2021Berkeley County, South Carolina

NWS Charleston, SC issued this tornado warning at Jul 8, 2021, 3:08 AM EDT for Berkeley County, South Carolina. It was in force for 39 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: Jul 8, 2021, 3:08 AM EDT (07:08 UTC)
Expired: Jul 8, 2021, 3:47 AM EDT
In force: 39 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Berkeley County, SC

The radar

The Columbia radar (KCAE), 129 km from the middle of the area, began a volume at 07:07 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jul 7, 7:25 PM EDT	Tornado Watch	SPC	11 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 7.1 hours before the alert went out and 56 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: 1185 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 801 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

979 
WFUS52 KCHS 080708
TORCHS
SCC015-080800-
/O.NEW.KCHS.TO.W.0011.210708T0708Z-210708T0800Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Charleston SC
Issued by National Weather Service Columbia SC
308 AM EDT Thu Jul 8 2021

The National Weather Service in Charleston has issued a

* Tornado Warning for portions of...
  North central Berkeley County in southeastern South Carolina...

* Until 400 AM EDT.
    
* At 308 AM EDT, a severe thunderstorm capable of producing a tornado
  was located near Huger, moving north at 35 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Moncks Corner, St. Stephen, Bonneau, Jamestown, Northern Lake
  Moultrie, Bonneau Beach, Old Santee Canal State Park and Saint
  Stephen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 3349 7995 3343 7987 3343 7988 3340 7985
      3337 7980 3338 7979 3332 7974 3332 7970
      3312 7970 3313 8001 3350 8009 3351 8002
      3350 8002 3351 7999
TIME...MOT...LOC 0708Z 172DEG 30KT 3319 7981 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

2 follow-up statements

234 
WWUS52 KCHS 080718
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
318 AM EDT Thu Jul 8 2021

SCC015-080800-
/O.CON.KCHS.TO.W.0011.000000T0000Z-210708T0800Z/
Berkeley SC-
318 AM EDT Thu Jul 8 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 AM EDT FOR BERKELEY
COUNTY...
    
At 318 AM EDT, a severe thunderstorm capable of producing a tornado
was located 7 miles west of Jamestown, moving north at 35 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Moncks Corner, Saint Stephen, Bonneau, Jamestown, Northern Lake
Moultrie, Bonneau Beach and Old Santee Canal State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Tornadoes from tropical storms or hurricanes can form and move very
quickly. TAKE COVER IMMEDIATELY! If you wait until you hear a tornado
it could be too late. Take action now to immediately protect
yourself.

&&

LAT...LON 3349 7995 3343 7987 3343 7988 3340 7985
      3337 7980 3338 7979 3332 7974 3332 7970
      3312 7970 3313 8001 3350 8009 3351 8002
      3350 8002 3351 7999
TIME...MOT...LOC 0718Z 172DEG 30KT 3328 7982 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

SPR

615 
WWUS52 KCHS 080747
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
347 AM EDT Thu Jul 8 2021

SCC015-080756-
/O.CAN.KCHS.TO.W.0011.000000T0000Z-210708T0800Z/
Berkeley SC-
347 AM EDT Thu Jul 8 2021

...THE TORNADO WARNING FOR PORTIONS OF BERKELEY COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.

LAT...LON 3349 7995 3343 7987 3343 7988 3340 7985
      3337 7980 3338 7979 3332 7974 3332 7970
      3312 7970 3313 8001 3350 8009 3351 8002
      3350 8002 3351 7999
TIME...MOT...LOC 0746Z 172DEG 30KT 3352 7986 

$$

SPR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 9:03 PM EDT	Special Marine Warning	CHS		117 min
Jul 7, 9:23 PM EDT	Areal Flood Advisory	CHS	Jasper	82 min
Jul 7, 10:39 PM EDT	Areal Flood Advisory	CHS	Beaufort, Jasper	81 min
Jul 7, 10:46 PM EDT	Special Marine Warning	CHS		89 min
Jul 7, 10:58 PM EDT	Special Marine Warning	CHS		32 min
Jul 7, 11:23 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort, Colleton, Jasper	67 min
Jul 7, 11:39 PM EDT	Tornado Warning	CHS	Beaufort, Jasper	36 min
Jul 7, 11:48 PM EDT	Special Marine Warning	CHS		87 min
Jul 8, 12:10 AM EDT	Areal Flood Advisory	CHS	Beaufort, Charleston, Colleton, Hampton, Jasper	3 hr
Jul 8, 12:23 AM EDT	Tornado Warning	CHS	Beaufort, Colleton	37 min
Jul 8, 12:49 AM EDT	Special Marine Warning	CHS		56 min
Jul 8, 12:57 AM EDT	Special Marine Warning	CHS		93 min
Jul 8, 12:59 AM EDT	Tornado Warning	CHS	Charleston	31 min
Jul 8, 1:08 AM EDT	Areal Flood Advisory	CHS	Berkeley, Charleston	5 hr
Jul 8, 1:36 AM EDT	Tornado Warning	CHS	Charleston	24 min
Jul 8, 1:50 AM EDT	Areal Flood Advisory	CHS	Berkeley, Charleston, Colleton, Dorchester	115 min
Jul 8, 1:54 AM EDT	Special Marine Warning	CHS		2 hr
Jul 8, 2:13 AM EDT	Special Weather Statement	CHS	Colleton	32 min
Jul 8, 2:21 AM EDT	Special Marine Warning	CHS		114 min
Jul 8, 2:23 AM EDT	Tornado Warning	CHS	Charleston	37 min
Jul 8, 2:30 AM EDT	Special Marine Warning	CHS		78 min
Jul 8, 2:49 AM EDT	Tornado Warning	CHS	Berkeley, Charleston	26 min
Jul 8, 3:16 AM EDT	Tornado Warning	CHS	Berkeley, Charleston	14 min
Jul 8, 3:36 AM EDT	Special Weather Statement	CHS	Dorchester	24 min
Jul 8, 3:58 AM EDT	Special Weather Statement	CHS	Dorchester	32 min
Jul 8, 4:05 AM EDT	Special Marine Warning	CHS		85 min
Jul 8, 4:16 AM EDT	Tornado Warning	CHS	Berkeley, Charleston	44 min
Jul 8, 8:05 AM EDT	Small Craft Advisory	CHS		14 hr

Nearby

Tornado Warnings in South Carolina, 2021 Every tornado warning in 2021 Tornadoes 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.