Alert archive / South Carolina / Tornado Warnings in 2020

Tornado Warning 7, NWS Charleston, SC

April 13, 2020Colleton County, Dorchester County, South Carolina

NWS Charleston, SC issued this tornado warning at Apr 13, 2020, 7:01 AM EDT for Colleton County, Dorchester County, South Carolina. It was in force for 29 min. 26 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
Apr 13, 2020, 7:01 AM EDT (11:01 UTC)
Expired
Apr 13, 2020, 7:30 AM EDT
In force
29 min
Issued by
NWS Charleston, SC
Area
Storm-based polygon
Tornado
Observed
Damage threat
Considerable
Hail
0.0 in

Counties Colleton County, SC, Dorchester County, SC

The radar

The Charleston,SC radar (KCLX), 78 km from the middle of the area, began a volume at 11:01 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
Apr 13, 7:03 AM EDTTSTM WND DMG2 Wnw Cottageville, SCNUMEROUS TREES SNAPPED OFF AND UPROOTED ON HIGHWAY 17A IN BETWEEN ROUND O AND COTTAGEVILLE.
Apr 13, 7:10 AM EDTTSTM WND DMG2 Wnw Givhans, SCA NATIONAL WEATHER SERVICE DAMAGE SURVEY TEAM DETERMINED THAT STRAIGHT LINE WINDS OF AROUND 105 MPH SNAPPED AND UPROOTED MANY TREES ALONG AND NORTH OF CAMPBELL ROAD. THIS DAMAGE OCCURED JUST SOUTH OF A TORNADO TOUCHDOWN NEAR ROUTE 61. TIME WAS ESTIMATED FROM R
Apr 13, 7:10 AM EDTTORNADO2 Wnw Givhans, SCA NATIONAL WEATHER SERVICE DAMAGE SURVEY TEAM HAS CONFIRMED AN EF-1 TORNADO NEAR GIVHANS. THE TORNADO TOUCHED DOWN NEAR ROUTE 61 AND DAMAGED TREES ALONG A 2.29 MILE PATH. PLEASE SEE THE PUBLIC INFORMATION STATEMENT (PNS) REGARDING THIS TORNADO FOR ADDITIONAL D
Apr 13, 7:12 AM EDTTSTM WND DMG3 W Givhans, SCDORCHESTER COUNTY REPORTED A TREE ON A HOUSE AND VEHICLE WITH A RESIDENT TRAPPED INSIDE THE HOUSE IN THE 2200 BLOCK OF OLD BEECH HILL ROAD. THE RESIDENT WAS NOT INJURED. ANOTHER TREE WAS DOWN ON A RESIDENCE IN THE 2200 BLOCK OF OLD BEECH ROAD. OTHER TREES WERE
Apr 13, 7:14 AM EDTTSTM WND DMG1 W Givhans, SCSPOTTER ON CHRISTINE LN REPORTED NUMEROUS TREES DOWN, MANY OF WHICH ARE SNAPPED OFF ABOUT 30 FEET UP. SOME OF THE TREES ARE TWISTED AT THE TOP. POSSIBLE TORNADO DAMAGE.
Apr 13, 7:14 AM EDTTSTM WND DMG1 Wnw Givhans, SCDORCHESTER COUNTY REPORTED TREES AND POWER LINES DOWN IN THE 300 BLOCK OF CAMPBELL ROAD. POSSIBLE TORNADO RELATED DAMAGE.
Apr 13, 7:15 AM EDTTSTM WND DMGGivhans, SCDORCHESTER COUNTY REPORTED A TREE DOWN WITH POWER LINES AND BLOCKING THE ROADWAY ON GIVHANS ROAD BETWEEN CARTER ROAD AND HIGHWAY 61. POSSIBLE TORNADO RELATED DAMAGE.
Apr 13, 7:16 AM EDTTSTM WND DMG1 Se Givhans, SCSTRUCTURAL HOUSE DAMAGE WAS CAUSED BY A TREE THAT HAD FALLEN AS WELL AS A GAS STATION SIGN WAS DAMAGED. TIME IS ESTIMATED BY RADAR. TORNADO DAMAGE POSSIBLE.
Apr 13, 7:16 AM EDTTSTM WND DMG2 N Givhans, SCSPOTTER LOCATED ON CARTER RD NEAR QUEEN DR REPORTED A 10X20 FT SHED WEIGHING APPROXIMATELY 2 TONS WAS BLOWN ON ITS SIDE AND MOVED ABOUT 20 FT. NUMEROUS 12 INCH DIAMETER GUM TREES SNAPPED IN HALF. POSSIBLE TORNADO DAMAGE.
Apr 13, 7:17 AM EDTTSTM WND DMG1 S Ridgeville, SCDORCHESTER COUNTY REPORTED TREES DOWN AND BLOCKING THE ROADWAY ON SNIPES LANE AT GIVHANS ROAD. POSSIBLE TORNADO RELATED DAMAGE.
Apr 13, 7:17 AM EDTTSTM WND DMG3 Nne Givhans, SCDORCHESTER COUNTY REPORTED TREES DOWN AND PARTIALLY BLOCKING THE ROADWAY ON GIVHANS ROAD NEAR WAY HALL ROAD. POSSIBLE TORNADO RELATED DAMAGE.
Apr 13, 7:17 AM EDTTSTM WND DMG4 Se Givhans, SCLARGE TREE DOWN ON HIGHWAY 17A NEAR CANAAN ROAD.
Apr 13, 7:18 AM EDTTSTM WND DMGRidgeville, SCDORCHESTER COUNTY REPORTED A TREE DOWN AND BLOCKING THE ROADWAY IN THE 200 BLOCK OF SCHOOL STREET. POSSIBLE TORNADO RELATED DAMAGE.
Apr 13, 7:20 AM EDTTSTM WND DMG1 W Jedburg, SCDORCHESTER COUNTY REPORTED TREES DOWN AND POWER LINES DOWN BEHIND A RESIDENCE IN THE 300 BLOCK OF GREYBACK ROAD.
Apr 13, 7:20 AM EDTTSTM WND DMG1 W Jedburg, SCDORCHESTER COUNTY REPORTS A LARGE TREE DOWN WITH POWER LINES ON GREYBACK ROAD IN THE JEDBURG COMMUNITY.
Apr 13, 7:20 AM EDTTSTM WND DMG1 W Jedburg, SCDORCHESTER COUNTY REPORTED TREES DOWN AND DAMAGE TO A WELL HOUSE, FENCE, AND OTHER PROPERTY IN THE 200 BLOCK OF WINNINGHAM ROAD. ALSO, TREES WERE REPORTED DOWN AND BLOCKING THE ROADWAY ON WINNINGHAM ROAD OFF OF ORANGEBURG ROAD. POSSIBLE TORNADO RELATED DAMAGE.
Apr 13, 7:21 AM EDTTSTM WND DMG1 Nw Jedburg, SCA SOCIAL MEDIA VIDEO POST DISPLAYED NUMEROUS DOWNED TREES AND DEBRIS ALONG HIGHWAY 78 OUTSIDE OF THE DRAKESBOROUGH NEIGHBORHOOD. POSSIBLE TORNADO DAMAGE. TIME ESTIMATED VIA RADAR DATA.
Apr 13, 7:21 AM EDTTSTM WND DMG1 Nw Summerville, SCDORCHESTER COUNTY REPORTED POWER LINES DOWN ON W RICHARDSON NEAR PIDGEON BAY AND PARSONS ROAD.
Apr 13, 7:21 AM EDTTSTM WND DMG1 Sw Jedburg, SCDORCHESTER COUNTY REPORTED THAT AN OAK TREE FELL THROUGH THE ROOF OF A RESIDENCE IN THE 200 BLOCK OF AUSTIN CREEK COURT AND DESTROYED AN UPSTAIRS BATHROOM. POSSIBLE TORNADO RELATED DAMAGE.
Apr 13, 7:21 AM EDTTSTM WND DMG1 Wnw Jedburg, SCDORCHESTER COUNTY REPORTED TREES DOWN AND BLOCKING THE ROADWAY ON ORANGEBURG ROAD BETWEEN HIGHWAY 78 AND GREYBACK ROAD. POSSIBLE TORNADO RELATED DAMAGE.
Apr 13, 7:21 AM EDTTSTM WND DMGJedburg, SCSPOTTER ON ALLSPICE DR BETWEEN CINNAMON AND GREYBACK REPORTED DOWNED TREES AND TREES SNAPPED OFF AT THE TOP. POWER LINES DOWN. WINDS ESTIMATED AT 60-70 MPH. POSSIBLE TORNADO DAMAGE.
Apr 13, 7:22 AM EDTTSTM WND DMG5 Sse Knightsville, SCDORCHESTER COUNTY REPORTED POWER LINES DOWN IN THE 300 BLOCK OF SPRUCEWOOD DRIVE.
Apr 13, 7:23 AM EDTTSTM WND DMG1 Ene Jedburg, SCDORCHESTER COUNTY REPORTED A TREE DOWN IN THE ROADWAY IN THE 200 BLOCK OF HODGE ROAD. POSSIBLE TORNADO RELATED DAMAGE.
Apr 13, 7:23 AM EDTTSTM WND DMG1 N Jedburg, SCDORCHESTER COUNTY REPORTED TREES AND POWER LINES DOWN IN THE 1500 AND 1600 BLOCK OF DAWSON BRANCH ROAD. POSSIBLE TORNADO RELATED DAMAGE.
Apr 13, 7:24 AM EDTTSTM WND DMG3 Ne Ridgeville, SCPOWER LINES DOWN ON I-26 WESTBOUND NEAR MM 189, BLOCKING TRAFFIC.
Apr 13, 7:30 AM EDTTSTM WND DMG1 Wsw Jedburg, SCMULTIPLE LIMBS WERE REPORTED DOWN AS WELL AS AT LEAST ONE TREE. TIME IS 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
Apr 13, 3:20 AM EDTTornado WatchSPC8 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 11.0 hours before the alert went out and 33 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 2020-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2020-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 371 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
944 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
371 m²/s²
0-3 km storm-relative helicity
494 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

996 
WFUS52 KCHS 131101
TORCHS
SCC029-035-131130-
/O.NEW.KCHS.TO.W.0007.200413T1101Z-200413T1130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Charleston SC
701 AM EDT Mon Apr 13 2020

The National Weather Service in Charleston has issued a

* Tornado Warning for portions of...
  Colleton County in southeastern South Carolina...
  Dorchester County in southeastern South Carolina...

* Until 730 AM EDT.
    
* At 700 AM EDT, a confirmed large and extremely dangerous tornado
  was located over Round O, moving east at 50 mph.

  This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

  HAZARD...Damaging tornado.

  SOURCE...Radar confirmed tornado.

  IMPACT...You are in a life-threatening situation. Flying debris 
           may be deadly to those caught without shelter. Mobile 
           homes will be destroyed. Considerable damage to homes, 
           businesses, and vehicles is likely and complete 
           destruction is possible.

* Locations impacted include...
  Summerville, Givhans Ferry State Park, Ridgeville, Cottageville,
  Round O, Givhans, Jedburg and Knightsville.

This warning includes I-26 between mile markers 189 and 190.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous and potentially deadly
tornado is on the ground. To protect your life, 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 3307 8021 3293 8013 3286 8055 3301 8058
      3314 8030
TIME...MOT...LOC 1100Z 248DEG 44KT 3294 8058 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...0.00IN

$$

SPR
1 follow-up statement
390 
WWUS52 KCHS 131120
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
720 AM EDT Mon Apr 13 2020

SCC029-131128-
/O.CAN.KCHS.TO.W.0007.000000T0000Z-200413T1130Z/
Colleton SC-
720 AM EDT Mon Apr 13 2020

...THE TORNADO WARNING FOR COLLETON COUNTY IS CANCELLED...
    
The immediate risk for tornadoes has ended. 

LAT...LON 3307 8021 3297 8015 3295 8038 3302 8040
      3304 8039 3305 8040 3305 8041 3308 8042
      3314 8030
TIME...MOT...LOC 1118Z 247DEG 48KT 3304 8030 

$$

SCC035-131130-
/O.CON.KCHS.TO.W.0007.000000T0000Z-200413T1130Z/
Dorchester SC-
720 AM EDT Mon Apr 13 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 AM EDT FOR
DORCHESTER COUNTY...
        
At 718 AM EDT, a confirmed large and extremely dangerous tornado was
located over Givhans, moving northeast at 55 mph.

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...Take cover now! Flying debris may be deadly to those caught 
         without shelter. Mobile homes, other structures and 
         vehicles could be damaged or destroyed. 

Locations impacted include...
Summerville, Givhans Ferry State Park, Ridgeville, Givhans,
Knightsville and Jedburg.

This warning includes I-26 between mile markers 189 and 190.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous and potentially deadly
tornado is on the ground. To protect your life, TAKE COVER NOW! Move
to a basement or 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.

Report damage directly to the Charleston National Weather Service at
1-888-383-2024 when it is safe to do so.

&&

LAT...LON 3307 8021 3297 8015 3295 8038 3302 8040
      3304 8039 3305 8040 3305 8041 3308 8042
      3314 8030
TIME...MOT...LOC 1118Z 247DEG 48KT 3304 8030 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...<.75IN

$$

SPR

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 12, 10:23 PM EDTCoastal Flood AdvisoryCHS4 hr
Apr 13, 5:33 AM EDTSevere Thunderstorm WarningCHSAllendale, Hampton, Jasper57 min
Apr 13, 5:54 AM EDTTornado WarningCHSAllendale, Hampton36 min
Apr 13, 6:02 AM EDTTornado WarningCHSAllendale14 min
Apr 13, 6:18 AM EDTTornado Warning Tornado observedCHSColleton, Hampton27 min
Apr 13, 6:22 AM EDTSevere Thunderstorm WarningCHSBeaufort, Colleton, Dorchester, Hampton, Jasper53 min
Apr 13, 6:38 AM EDTTornado Warning EmergencyTornado observedCHSColleton, Hampton37 min
Apr 13, 6:53 AM EDTSevere Thunderstorm WarningCHSBeaufort, Berkeley, Charleston, Colleton, Dorchester52 min
Apr 13, 7:08 AM EDTSevere Thunderstorm WarningCHSBeaufort, Jasper67 min
Apr 13, 7:15 AM EDTSevere Thunderstorm WarningCHSJasper60 min
Apr 13, 7:26 AM EDTTornado WarningCHSBerkeley, Dorchester34 min
Apr 13, 7:42 AM EDTSevere Thunderstorm WarningCHSBeaufort, Berkeley, Charleston, Colleton, Dorchester63 min
Apr 13, 7:47 AM EDTSpecial Marine WarningCHS88 min
Apr 13, 7:50 AM EDTSpecial Marine WarningCHS115 min
Apr 13, 7:54 AM EDTTornado Warning Tornado observedCHSBerkeley18 min
Apr 13, 8:00 AM EDTTornado WarningCHSCharleston, Colleton30 min
Apr 13, 8:13 AM EDTSevere Thunderstorm WarningCHSBeaufort, Jasper62 min
Apr 13, 8:26 AM EDTTornado WarningCHSCharleston34 min
Apr 13, 8:42 AM EDTSevere Thunderstorm WarningCHSBerkeley, Charleston33 min
Apr 13, 9:06 AM EDTSpecial Marine WarningCHS54 min
Apr 13, 9:38 AM EDTSpecial Marine WarningCHS86 min
Apr 13, 9:41 AM EDTSpecial Marine WarningCHS82 min
Apr 13, 9:53 AM EDTSmall Craft AdvisoryCHS17 hr

Nearby

Tornado Warnings in South Carolina, 2020Every tornado warning in 2020Tornadoes in 2020

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.