Alert archive / South Carolina / Tornado Warnings in 2021

Tornado Warning 9, NWS Charleston, SC

July 8, 2021Charleston County, South Carolina

NWS Charleston, SC issued this tornado warning at Jul 8, 2021, 2:23 AM EDT for Charleston County, South Carolina. It was in force for 37 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, 2:23 AM EDT (06:23 UTC)
Expired
Jul 8, 2021, 3:00 AM EDT
In force
37 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), 122 km from the middle of the area, began a volume at 06:23 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.

IssuedProductOfficeLasted
Jul 7, 7:25 PM EDTTornado WatchSPC11 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 6.4 hours before the alert went out and 23 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-pSkew-T log-p diagram, Charleston AFB, SC at 00:00Z on 2021-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1185 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 00:00Z on 2021-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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.

401 
WFUS52 KCHS 080623
TORCHS
SCC019-080700-
/O.NEW.KCHS.TO.W.0009.210708T0623Z-210708T0700Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Charleston SC
223 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 300 AM EDT.
    
* At 223 AM EDT, a severe thunderstorm capable of producing a tornado
  was located over Isle Of Palms, 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...
  Mount Pleasant, Isle Of Palms, Awendaw, Mount Pleasant Regional
  Airport and Capers Inlet.

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 3276 7979 3293 7982 3295 7977 3298 7970
      3281 7970
TIME...MOT...LOC 0623Z 177DEG 23KT 3278 7975 

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

$$

SPR
2 follow-up statements
067 
WWUS52 KCHS 080634
SVSCHS

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

SCC019-080700-
/O.CON.KCHS.TO.W.0009.000000T0000Z-210708T0700Z/
Charleston SC-
234 AM EDT Thu Jul 8 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 300 AM EDT FOR
CHARLESTON COUNTY...
    
At 234 AM EDT, a severe thunderstorm capable of producing a tornado
was located over Mount Pleasant Regional Airport, 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 and Mount Pleasant Regional Airport. 

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 3284 7978 3293 7979 3295 7977 3296 7974
      3285 7971
TIME...MOT...LOC 0634Z 177DEG 31KT 3289 7976 

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

$$

SPR
222 
WWUS52 KCHS 080656
SVSCHS

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

SCC019-080706-
/O.EXP.KCHS.TO.W.0009.000000T0000Z-210708T0700Z/
Charleston SC-
256 AM EDT Thu Jul 8 2021

...THE TORNADO WARNING FOR PORTIONS OF CHARLESTON COUNTY WILL EXPIRE
AT 300 AM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

LAT...LON 3284 7978 3293 7979 3295 7977 3296 7974
      3285 7971
TIME...MOT...LOC 0656Z 177DEG 23KT 3302 7977 

$$

SPR

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 9:03 PM EDTSpecial Marine WarningCHS117 min
Jul 7, 9:23 PM EDTAreal Flood AdvisoryCHSJasper82 min
Jul 7, 10:39 PM EDTAreal Flood AdvisoryCHSBeaufort, Jasper81 min
Jul 7, 10:46 PM EDTSpecial Marine WarningCHS89 min
Jul 7, 10:58 PM EDTSpecial Marine WarningCHS32 min
Jul 7, 11:23 PM EDTSevere Thunderstorm WarningCHSBeaufort, Colleton, Jasper67 min
Jul 7, 11:39 PM EDTTornado WarningCHSBeaufort, Jasper36 min
Jul 7, 11:48 PM EDTSpecial Marine WarningCHS87 min
Jul 8, 12:10 AM EDTAreal Flood AdvisoryCHSBeaufort, Charleston, Colleton, Hampton, Jasper3 hr
Jul 8, 12:23 AM EDTTornado WarningCHSBeaufort, Colleton37 min
Jul 8, 12:49 AM EDTSpecial Marine WarningCHS56 min
Jul 8, 12:57 AM EDTSpecial Marine WarningCHS93 min
Jul 8, 12:59 AM EDTTornado WarningCHSCharleston31 min
Jul 8, 1:08 AM EDTAreal Flood AdvisoryCHSBerkeley, Charleston5 hr
Jul 8, 1:36 AM EDTTornado WarningCHSCharleston24 min
Jul 8, 1:50 AM EDTAreal Flood AdvisoryCHSBerkeley, Charleston, Colleton, Dorchester115 min
Jul 8, 1:54 AM EDTSpecial Marine WarningCHS2 hr
Jul 8, 2:13 AM EDTSpecial Weather StatementCHSColleton32 min
Jul 8, 2:21 AM EDTSpecial Marine WarningCHS114 min
Jul 8, 2:30 AM EDTSpecial Marine WarningCHS78 min
Jul 8, 2:49 AM EDTTornado WarningCHSBerkeley, Charleston26 min
Jul 8, 3:08 AM EDTTornado WarningCHSBerkeley39 min
Jul 8, 3:16 AM EDTTornado WarningCHSBerkeley, Charleston14 min
Jul 8, 3:36 AM EDTSpecial Weather StatementCHSDorchester24 min
Jul 8, 3:58 AM EDTSpecial Weather StatementCHSDorchester32 min
Jul 8, 4:05 AM EDTSpecial Marine WarningCHS85 min
Jul 8, 4:16 AM EDTTornado WarningCHSBerkeley, Charleston44 min
Jul 8, 8:05 AM EDTSmall Craft AdvisoryCHS14 hr

Nearby

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