Alert archive / South Carolina / Tornado Warnings in 2023

Tornado Warning 9, NWS Charleston, SC

August 30, 2023Charleston County, South Carolina

NWS Charleston, SC issued this tornado warning at Aug 30, 2023, 11:15 AM EDT for Charleston County, South Carolina. It was in force for 30 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, 11:15 AM EDT (15:15 UTC)
Expired: Aug 30, 2023, 11:45 AM EDT
In force: 30 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), 76 km from the middle of the area, began a volume at 15:13 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, 3.3 hours before the alert went out and 286 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.

288 
WFUS52 KCHS 301515
TORCHS
SCC019-301545-
/O.NEW.KCHS.TO.W.0009.230830T1515Z-230830T1545Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Charleston SC
1115 AM 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...

* Until 1145 AM EDT.
    
* At 1115 AM EDT, a severe thunderstorm capable of producing a
  tornado was located over Yonges Island, moving north at 25 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, Hollywood, Ravenel, Meggett, Yonges Island, and
  Wadmalaw 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 3269 8015 3265 8027 3281 8040 3285 8031
      3282 8018
TIME...MOT...LOC 1515Z 161DEG 21KT 3270 8022 

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

$$

JRL

2 follow-up statements

770 
WWUS52 KCHS 301526
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
1126 AM EDT Wed Aug 30 2023

SCC019-301545-
/O.CON.KCHS.TO.W.0009.000000T0000Z-230830T1545Z/
Charleston SC-
1126 AM EDT Wed Aug 30 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 AM EDT FOR PORTIONS
OF CHARLESTON COUNTY...
    
At 1126 AM EDT, a severe thunderstorm capable of producing a tornado
was located over Ravenel, moving northwest at 20 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: 
Hollywood, Ravenel, and Meggett. 

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 3282 8018 3272 8018 3272 8020 3271 8021
      3271 8028 3281 8040 3285 8031
TIME...MOT...LOC 1526Z 155DEG 20KT 3275 8025 

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

$$

JRL

931 
WWUS52 KCHS 301535
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
1135 AM EDT Wed Aug 30 2023

SCC019-301545-
/O.CON.KCHS.TO.W.0009.000000T0000Z-230830T1545Z/
Charleston SC-
1135 AM EDT Wed Aug 30 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 AM EDT FOR PORTIONS
OF CHARLESTON COUNTY...
    
At 1135 AM EDT, a severe thunderstorm capable of producing a tornado
was located over Ravenel, moving north at 20 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: 
Ravenel and Delemar Crossroads. 

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 3283 8020 3277 8022 3276 8024 3276 8030
      3283 8036 3285 8031
TIME...MOT...LOC 1535Z 160DEG 19KT 3279 8027 

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

$$

JRL

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, 11:43 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, 3:35 PM EDT	Tornado Warning Tornado observed	CHS	Berkeley, Charleston	25 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.