Alert archive / South Carolina / Tornado Warnings in 2023

Tornado Warning 13, NWS Charleston, SC

August 30, 2023Berkeley County, Charleston County, South Carolina

NWS Charleston, SC issued this tornado warning at Aug 30, 2023, 3:35 PM EDT for Berkeley County, Charleston County, South Carolina. It was in force for 25 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: Aug 30, 2023, 3:35 PM EDT (19:35 UTC)
Expired: Aug 30, 2023, 4:00 PM EDT
In force: 25 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon
Tornado: Observed
Hail: 0.0 in

Counties Berkeley County, SC, Charleston County, SC

The radar

The Charleston,SC radar (KCLX), 108 km from the middle of the area, began a volume at 19:40 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
Aug 30, 10:51 AM EDT	Tornado Watch	SPC	11 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 7.6 hours before the alert went out and 308 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: 888 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 600 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 361 m²/s²
0-3 km storm-relative helicity: 421 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 16.2

Open this sounding in Storm Lab

The text

As transmitted.

721 
WFUS52 KCHS 301935
TORCHS
SCC015-019-302000-
/O.NEW.KCHS.TO.W.0013.230830T1935Z-230830T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Charleston SC
335 PM EDT Wed Aug 30 2023

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 400 PM EDT.

* At 334 PM EDT, a confirmed tornado was located over Fort Johnson,
  moving north at 35 mph.

  HAZARD...Damaging tornado.

  SOURCE...Emergency management confirmed tornado.

  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:
  North Charleston, Mount Pleasant, Downtown Charleston, Daniel 
  Island, Fort Sumter, Fort Johnson, Charleston Naval Complex, and 
  James Island.

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 3272 7985 3272 7993 3285 7998 3294 8001
      3297 7986 3274 7983
TIME...MOT...LOC 1934Z 167DEG 30KT 3274 7989 

TORNADO...OBSERVED
MAX HAIL SIZE...0.00 IN

$$

JRL

2 follow-up statements

623 
WWUS52 KCHS 301946
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
346 PM EDT Wed Aug 30 2023

SCC015-019-302000-
/O.CON.KCHS.TO.W.0013.000000T0000Z-230830T2000Z/
Charleston SC-Berkeley SC-
346 PM EDT Wed Aug 30 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM EDT FOR PORTIONS
OF CHARLESTON AND BERKELEY COUNTIES...
    
At 346 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Daniel 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: 
Mount Pleasant, Goose Creek, Hanahan, and Daniel Island. 

This warning includes I-526 between mile markers 23 and 29.
 
LAT...LON 3280 7991 3283 7993 3285 7993 3286 7994
      3295 7998 3297 7986 3281 7985
TIME...MOT...LOC 1946Z 172DEG 30KT 3285 7989 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

JRL

885 
WWUS52 KCHS 301953
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
353 PM EDT Wed Aug 30 2023

SCC015-019-302003-
/O.EXP.KCHS.TO.W.0013.000000T0000Z-230830T2000Z/
Charleston SC-Berkeley SC-
353 PM EDT Wed Aug 30 2023

...THE TORNADO WARNING FOR PORTIONS OF CHARLESTON AND BERKELEY
COUNTIES WILL EXPIRE AT 400 PM 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.

A Tornado Watch remains in effect until 1000 PM EDT for southeastern
South Carolina.

LAT...LON 3280 7991 3283 7993 3285 7993 3286 7994
      3295 7998 3297 7986 3281 7985
TIME...MOT...LOC 1953Z 167DEG 30KT 3290 7990 

$$

BRM

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 30, 2:28 AM EDT	River Flood Warning	CHS	Allendale	7 hr
Aug 30, 4:40 AM EDT	Special Marine Warning	CHS		65 min
Aug 30, 5:14 AM EDT	Hurricane Warning	CHS		12 hr
Aug 30, 5:20 AM EDT	Storm Surge Warning	CHS		21 hr
Aug 30, 11:01 AM EDT	River Flood Warning	CHS	Allendale	21 days
Aug 30, 11:15 AM EDT	Tornado Warning	CHS	Charleston	30 min
Aug 30, 11:43 AM EDT	Tornado Warning	CHS	Charleston, Dorchester	11 min
Aug 30, 1:24 PM EDT	Special Marine Warning	CHS		25 min
Aug 30, 3:29 PM EDT	Tornado Warning	CHS	Berkeley, Charleston	15 min
Aug 30, 3:38 PM EDT	Tornado Warning	CHS	Charleston, Dorchester	20 min
Aug 30, 3:52 PM EDT	Tornado Warning	CHS	Colleton, Dorchester	23 min
Aug 30, 3:54 PM EDT	Areal Flood Advisory	CHS	Allendale, Hampton, Jasper	5 hr
Aug 30, 4:11 PM EDT	Special Marine Warning	CHS		21 min
Aug 30, 4:19 PM EDT	Special Marine Warning	CHS		26 min
Aug 30, 4:47 PM EDT	Flash Flood Warning Considerable damage threat	CHS	Allendale, Hampton, Jasper	3 hr
Aug 30, 4:48 PM EDT	Tornado Warning	CHS	Berkeley, Charleston	27 min
Aug 30, 5:16 PM EDT	Tornado Warning	CHS	Berkeley	29 min
Aug 30, 5:20 PM EDT	Tornado Warning	CHS	Hampton, Jasper	25 min
Aug 30, 5:41 PM EDT	Areal Flood Advisory	CHS	Colleton, Hampton	45 min
Aug 30, 6:26 PM EDT	Flash Flood Warning Considerable damage threat	CHS	Colleton, Hampton	4 hr
Aug 30, 6:57 PM EDT	Areal Flood Advisory	CHS	Berkeley, Colleton, Dorchester	5 hr
Aug 30, 7:52 PM EDT	Areal Flood Warning	CHS	Allendale, Hampton, Jasper	6 hr

Nearby

Tornado Warnings in South Carolina, 2023 Every tornado warning in 2023 Tornadoes in 2023

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.