Alert archive / South Carolina / Tornado Warnings in 2021

Tornado Warning 13, NWS Charleston, SC

July 8, 2021Berkeley County, Charleston County, South Carolina

NWS Charleston, SC issued this tornado warning at Jul 8, 2021, 4:16 AM EDT for Berkeley County, Charleston County, South Carolina. It was in force for 44 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, 4:16 AM EDT (08:16 UTC)
Expired: Jul 8, 2021, 5:00 AM EDT
In force: 44 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Berkeley County, SC, Charleston County, SC

The radar

The Wilmington radar (KLTX), 137 km from the middle of the area, began a volume at 08:15 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, 8.3 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.

950 
WFUS52 KCHS 080816
TORCHS
SCC015-019-080900-
/O.NEW.KCHS.TO.W.0013.210708T0816Z-210708T0900Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Charleston SC
416 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...
  Berkeley County in southeastern South Carolina...

* Until 500 AM EDT.
    
* At 416 AM EDT, a severe thunderstorm capable of producing a tornado
  was located over McClellanville, moving north at 30 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...
  McClellanville, Awendaw, Garris Landing, Hampton Plantation State
  Park, Cape Island, Price Inlet, Bull Island, Lighthouse Island,
  Cape Romain and Santee Coastal Reserve.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3310 7927 3307 7931 3299 7933 3298 7951
      3288 7955 3285 7961 3283 7970 3329 7964
      3327 7956 3325 7953 3325 7948 3323 7948
      3324 7946 3322 7945 3316 7937 3314 7927
TIME...MOT...LOC 0816Z 184DEG 26KT 3307 7949 

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

$$

SPR

2 follow-up statements

477 
WWUS52 KCHS 080830
SVSCHS

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

SCC015-019-080900-
/O.CON.KCHS.TO.W.0013.000000T0000Z-210708T0900Z/
Charleston SC-Berkeley SC-
430 AM EDT Thu Jul 8 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 AM EDT FOR
CHARLESTON AND BERKELEY COUNTIES...
    
At 430 AM EDT, a severe thunderstorm capable of producing a tornado
was located over Cape Island, 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...
McClellanville, Awendaw, Garris Landing, Hampton Plantation State
Park, Cape Island, Price Inlet, Bull Island, Lighthouse Island, Cape
Romain and Santee Coastal Reserve.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3310 7927 3307 7931 3299 7933 3298 7951
      3288 7955 3285 7961 3283 7970 3329 7964
      3327 7956 3325 7953 3325 7948 3323 7948
      3324 7946 3322 7945 3316 7937 3314 7927
TIME...MOT...LOC 0830Z 182DEG 30KT 3307 7938 

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

$$

SPR

923 
WWUS52 KCHS 080855
SVSCHS

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

SCC015-019-080905-
/O.EXP.KCHS.TO.W.0013.000000T0000Z-210708T0900Z/
Charleston SC-Berkeley SC-
455 AM EDT Thu Jul 8 2021

...THE TORNADO WARNING FOR PORTIONS OF CHARLESTON AND BERKELEY
COUNTIES WILL EXPIRE AT 500 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 3310 7927 3307 7931 3299 7933 3298 7951
      3288 7955 3285 7961 3283 7970 3329 7964
      3327 7956 3325 7953 3325 7948 3323 7948
      3324 7946 3322 7945 3316 7937 3314 7927
TIME...MOT...LOC 0855Z 184DEG 26KT 3324 7937 

$$

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, 3:08 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, 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.