Alert archive / South Carolina / Tornado Warnings in 2021

Tornado Warning 8, NWS Charleston, SC

July 8, 2021Charleston County, South Carolina

NWS Charleston, SC issued this tornado warning at Jul 8, 2021, 1:36 AM EDT for Charleston County, South Carolina. It was in force for 24 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, 1:36 AM EDT (05:36 UTC)
Expired: Jul 8, 2021, 2:00 AM EDT
In force: 24 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Charleston County, SC

The radar

The Charleston,SC radar (KCLX), 100 km from the middle of the area, began a volume at 05:38 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, 5.6 hours before the alert went out and 27 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.

578 
WFUS52 KCHS 080536
TORCHS
SCC019-080600-
/O.NEW.KCHS.TO.W.0008.210708T0536Z-210708T0600Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Charleston SC
136 AM EDT Thu Jul 8 2021

The National Weather Service in Charleston has issued a

* Tornado Warning for portions of...
  Charleston County in southeastern South Carolina...

* Until 200 AM EDT.
    
* At 135 AM EDT, a severe thunderstorm capable of producing a tornado
  was located near Kiawah Island, moving north at 45 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...
  Johns Island, Folly Beach, Kiawah Island, James Island, James
  Island County Park and Maybank Bridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

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 3264 7993 3262 7994 3259 7997 3256 8006
      3277 8006 3276 7992
TIME...MOT...LOC 0535Z 183DEG 38KT 3255 8000 

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

$$

SPR

2 follow-up statements

990 
WWUS52 KCHS 080546
SVSCHS

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

SCC019-080600-
/O.CON.KCHS.TO.W.0008.000000T0000Z-210708T0600Z/
Charleston SC-
146 AM EDT Thu Jul 8 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 200 AM EDT FOR
CHARLESTON COUNTY...
    
At 146 AM EDT, a severe thunderstorm capable of producing a tornado
was located near Folly Beach, moving north at 45 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...
James Island, Johns Island, Folly Beach, Kiawah Island, James Island
County Park and Maybank Bridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

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 3265 7996 3262 7998 3263 8006 3277 8006
      3276 7995 3267 7996
TIME...MOT...LOC 0546Z 179DEG 39KT 3268 8001 

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

$$

SPR

286 
WWUS52 KCHS 080553
SVSCHS

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

SCC019-080603-
/O.EXP.KCHS.TO.W.0008.000000T0000Z-210708T0600Z/
Charleston SC-
153 AM EDT Thu Jul 8 2021

...THE TORNADO WARNING FOR PORTIONS OF CHARLESTON COUNTY WILL EXPIRE
AT 200 AM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning will be allowed to expire.

LAT...LON 3265 7996 3262 7998 3263 8006 3277 8006
      3276 7995 3267 7996
TIME...MOT...LOC 0553Z 183DEG 38KT 3273 8001 

$$

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, 1:50 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, 3:08 AM EDT	Tornado Warning	CHS	Berkeley	39 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.