Alert archive / South Carolina / Tornado Warnings in 2021

Tornado Warning 11, NWS Wilmington, NC

July 8, 2021Georgetown County, Horry County, South Carolina

NWS Wilmington, NC issued this tornado warning at Jul 8, 2021, 7:46 AM EDT for Georgetown County, Horry County, South Carolina. It was in force for 29 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, 7:46 AM EDT (11:46 UTC)
Expired
Jul 8, 2021, 8:15 AM EDT
In force
29 min
Issued by
NWS Wilmington, NC
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Georgetown County, SC, Horry County, SC

The radar

The Wilmington radar (KLTX), 60 km from the middle of the area, began a volume at 11:47 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 8, 2:01 AM EDTTornado WatchSPC7 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 11.8 hours before the alert went out and 129 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.

390 
WFUS52 KILM 081146
TORILM
SCC043-051-081215-
/O.NEW.KILM.TO.W.0011.210708T1146Z-210708T1215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Wilmington NC
746 AM EDT Thu Jul 8 2021

The National Weather Service in Wilmington has issued a

* Tornado Warning for...
  East central Georgetown County in northeastern South Carolina...
  Southeastern Horry County in northeastern South Carolina...

* Until 815 AM EDT.
    
* At 746 AM EDT, a severe thunderstorm capable of producing a tornado
  was located over Garden City, moving northeast 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.

* This dangerous storm will be near...
  Myrtle Beach Airport, Springmaid Pier, Socastee and Bucksville 
  around 755 AM EDT.
  Myrtle Beach, Red Hill and Forestbrook around 800 AM EDT.
  Horry Georgetown Technical College Conway Campus and Coastal 
  Carolina University around 805 AM EDT.
  Hickory Grove and Nixonville around 810 AM EDT.
  North Myrtle Beach Airport, Hand, Hammond and Barefoot Landing 
  Area Of North Myrtle Beach around 815 AM EDT.

Other locations impacted by this tornadic thunderstorm include
Briarcliffe Acres, Waccamaw Community Hospital, Lighthouse Care
Center Of Conway, Grand Strand Regional Medical Center, Conway
Medical Center and Atlantic Beach.

This includes the following highways...
 SC Highway 31 between mile markers 5 and 21.
 SC Highway 22 between mile markers 13 and 17, and between mile
markers 19 and 26.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3354 7914 3395 7896 3384 7869 3380 7872
      3372 7884 3363 7894 3357 7901 3354 7902
      3351 7906
TIME...MOT...LOC 1146Z 205DEG 42KT 3358 7900 

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

$$

VAO
2 follow-up statements
951 
WWUS52 KILM 081154
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
754 AM EDT Thu Jul 8 2021

SCC043-081204-
/O.CAN.KILM.TO.W.0011.000000T0000Z-210708T1215Z/
Georgetown SC-
754 AM EDT Thu Jul 8 2021

...THE TORNADO WARNING FOR EAST CENTRAL GEORGETOWN COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 900 AM EDT for northeastern
South Carolina.

LAT...LON 3362 7905 3395 7896 3384 7869 3380 7872
      3372 7884 3363 7894 3358 7899 3360 7902
      3360 7903
TIME...MOT...LOC 1154Z 203DEG 40KT 3366 7896 

$$

SCC051-081215-
/O.CON.KILM.TO.W.0011.000000T0000Z-210708T1215Z/
Horry SC-
754 AM EDT Thu Jul 8 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 AM EDT FOR
SOUTHEASTERN HORRY COUNTY...
    
At 754 AM EDT, a severe thunderstorm capable of producing a tornado
was located over Myrtle Beach Airport, moving northeast at 45 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.

This dangerous storm will be near...
  Myrtle Beach and Red Hill around 800 AM EDT.
  Horry Georgetown Technical College Conway Campus around 805 AM 
  EDT.
  Hickory Grove and Nixonville around 810 AM EDT.
  North Myrtle Beach Airport and Hand around 815 AM EDT.
  Hammond around 820 AM EDT.

Other locations impacted by this tornadic thunderstorm include
Briarcliffe Acres, Lighthouse Care Center Of Conway, Grand Strand
Regional Medical Center, Conway Medical Center and Atlantic Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3362 7905 3395 7896 3384 7869 3380 7872
      3372 7884 3363 7894 3358 7899 3360 7902
      3360 7903
TIME...MOT...LOC 1154Z 203DEG 40KT 3366 7896 

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

$$

VAO
896 
WWUS52 KILM 081212
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
812 AM EDT Thu Jul 8 2021

SCC051-081222-
/O.EXP.KILM.TO.W.0011.000000T0000Z-210708T1215Z/
Horry SC-
812 AM EDT Thu Jul 8 2021

...THE TORNADO WARNING FOR SOUTHEASTERN HORRY COUNTY WILL EXPIRE AT
815 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.  However gusty
winds are still possible with this thunderstorm.

A Tornado Watch remains in effect until 900 AM EDT for northeastern
South Carolina.

LAT...LON 3362 7905 3395 7896 3384 7869 3380 7872
      3372 7884 3363 7894 3358 7899 3360 7902
      3360 7903
TIME...MOT...LOC 1212Z 205DEG 42KT 3384 7886 

$$

VAO

The office that day

Everything else NWS Wilmington, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 8, 3:50 AM EDTAreal Flood AdvisoryILMFlorence, Williamsburg3 hr
Jul 8, 4:31 AM EDTTornado WarningILMGeorgetown, Williamsburg29 min
Jul 8, 5:25 AM EDTTornado WarningILMGeorgetown, Horry22 min
Jul 8, 6:21 AM EDTTornado WarningILMDillon24 min
Jul 8, 6:27 AM EDTAreal Flood AdvisoryILMDarlington, Dillon, Florence, Georgetown, Horry, Marion and 1 more2 hr
Jul 8, 8:27 AM EDTAreal Flood AdvisoryILMHorry2 hr
Jul 8, 10:41 AM EDTRiver Flood WarningILMDarlington, Florence33 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.