Alert archive / South Carolina / Tornado Warnings in 2021

Tornado Warning 7, NWS Charleston, SC

July 8, 2021Charleston County, South Carolina

NWS Charleston, SC issued this tornado warning at Jul 8, 2021, 12:59 AM EDT for Charleston County, South Carolina. It was in force for 31 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 8, 2021, 12:59 AM EDT (04:59 UTC)
Expired
Jul 8, 2021, 1:30 AM EDT
In force
31 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), 73 km from the middle of the area, began a volume at 05:00 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.

What was reported inside it

TimeReportWhereRemark
Jul 8, 1:00 AM EDTTORNADO1 W Edisto Island, SCA NATIONAL WEATHER SERVICE STORM SURVEY CONFIRMED TORNADO DAMAGE ON EDISTO ISLAND, SC. THE EVENT TIME WAS DETERMINED FROM RADAR DATA.
Jul 8, 1:02 AM EDTTSTM WND DMG2 Nw Edisto Island, SCLARGE TREES DOWN BLOCKING HIGHWAY 174 AT STEAMBOAT LANDING ROAD. LIKELY A TORNADO DUE TO RADAR DEBRIS SIGNATURE. TIME ESTIMATED BY RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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, 5.0 hours before the alert went out and 43 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°0°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.

568 
WFUS52 KCHS 080459
TORCHS
SCC019-080530-
/O.NEW.KCHS.TO.W.0007.210708T0459Z-210708T0530Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Charleston SC
1259 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 130 AM EDT.
    
* At 1258 AM EDT, a severe thunderstorm capable of producing a
  tornado was located over Edisto Island, moving north at 50 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, Edisto
  Island, Adams Run and Bears Bluff.

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 3281 8013 3251 8024 3249 8028 3250 8030
      3253 8026 3254 8026 3253 8027 3253 8029
      3251 8031 3253 8032 3253 8035 3285 8039
TIME...MOT...LOC 0458Z 181DEG 42KT 3254 8029 

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

$$

SPR
3 follow-up statements
432 
WWUS52 KCHS 080502
SVSCHS

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

SCC019-080530-
/O.CON.KCHS.TO.W.0007.000000T0000Z-210708T0530Z/
Charleston SC-
102 AM EDT Thu Jul 8 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 130 AM EDT FOR
CHARLESTON COUNTY...
        
At 101 AM EDT, a confirmed tornado was located over Edisto Island,
moving north at 50 mph.

HAZARD...Damaging tornado.

SOURCE...Radar 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...
Johns Island, Hollywood, Ravenel, Meggett, Yonges Island, Edisto
Island, Adams Run and Bears Bluff.

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 3281 8013 3251 8024 3249 8028 3250 8030
      3253 8026 3254 8026 3253 8027 3253 8029
      3251 8031 3253 8032 3253 8035 3285 8039
TIME...MOT...LOC 0501Z 180DEG 42KT 3258 8029 

TORNADO...OBSERVED
HAIL...<.75IN

$$

SPR
359 
WWUS52 KCHS 080513
SVSCHS

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

SCC019-080530-
/O.CON.KCHS.TO.W.0007.000000T0000Z-210708T0530Z/
Charleston SC-
113 AM EDT Thu Jul 8 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 130 AM EDT FOR
CHARLESTON COUNTY...
        
At 112 AM EDT, a confirmed tornado was located over Meggett, moving
north at 45 mph.

HAZARD...Damaging tornado.

SOURCE...Radar 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...
Hollywood, Ravenel, Meggett, Adams Run and Bears Bluff. 

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 3282 8020 3263 8025 3263 8036 3285 8039
TIME...MOT...LOC 0512Z 179DEG 39KT 3270 8029 

TORNADO...OBSERVED
HAIL...<.75IN

$$

SPR
560 
WWUS52 KCHS 080526
SVSCHS

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

SCC019-080536-
/O.EXP.KCHS.TO.W.0007.000000T0000Z-210708T0530Z/
Charleston SC-
126 AM EDT Thu Jul 8 2021

...THE TORNADO WARNING FOR PORTIONS OF CHARLESTON COUNTY WILL EXPIRE
AT 130 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.

A Tropical Storm Warning remains in effect. 

LAT...LON 3282 8020 3263 8025 3263 8036 3285 8039
TIME...MOT...LOC 0526Z 181DEG 42KT 3283 8029 

$$

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, 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, 2:23 AM EDTTornado WarningCHSCharleston37 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.