Alert archive / South Carolina / Tornado Warnings in 2019

Tornado Warning 21, NWS Wilmington, NC

September 5, 2019Horry County, South Carolina

NWS Wilmington, NC issued this tornado warning at Sep 5, 2019, 5:24 AM EDT for Horry County, South Carolina. It was in force for 24 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
Sep 5, 2019, 5:24 AM EDT (09:24 UTC)
Expired
Sep 5, 2019, 5:48 AM EDT
In force
24 min
Issued by
NWS Wilmington, NC
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Horry County, SC

The radar

The Wilmington radar (KLTX), 67 km from the middle of the area, began a volume at 09:26 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
Sep 5, 4:20 AM EDTTornado WatchSPC12 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 9.4 hours before the alert went out and 137 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 2019-09-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 352 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 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 2019-09-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 233 square meters per square second.193958Sfc1 km3 km6 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
352 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
452 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
233 m²/s²
0-3 km storm-relative helicity
106 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.2

Open this sounding in Storm Lab

The text

As transmitted.

832 
WFUS52 KILM 050924
TORILM
SCC051-051000-
/O.NEW.KILM.TO.W.0021.190905T0924Z-190905T1000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Wilmington NC
524 AM EDT Thu Sep 5 2019

The National Weather Service in Wilmington has issued a

* Tornado Warning for...
  West central Horry County in northeastern South Carolina...

* Until 600 AM EDT.
    
* At 524 AM EDT, a severe thunderstorm capable of producing a tornado
  was located near Hickory Grove, or 8 miles northeast of Conway,
  moving west at 40 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...
  Adrian, Homewood and Bayboro around 530 AM EDT.
  Horry around 540 AM EDT.

Other locations impacted by this tornadic thunderstorm include Aynor.

This includes SC Highway 22 between mile markers 1 and 16.
 
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!

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3385 7926 3389 7926 3389 7927 3408 7922
      3401 7889 3383 7892
TIME...MOT...LOC 0924Z 100DEG 35KT 3392 7895 

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

$$

MCK
1 follow-up statement
212 
WWUS52 KILM 050948
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
548 AM EDT Thu Sep 5 2019

SCC051-050958-
/O.CAN.KILM.TO.W.0021.000000T0000Z-190905T1000Z/
Horry SC-
548 AM EDT Thu Sep 5 2019

...THE TORNADO WARNING FOR WEST CENTRAL HORRY COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.  However heavy rain is
still possible with this thunderstorm.

A Tornado Watch remains in effect until 400 PM EDT for northeastern
South Carolina.

LAT...LON 3385 7926 3389 7926 3389 7927 3408 7922
      3401 7889 3383 7892
TIME...MOT...LOC 0947Z 100DEG 35KT 3396 7924 

$$

MCK

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 5, 2:54 AM EDTSpecial Weather StatementILMWilliamsburg66 min
Sep 5, 4:01 AM EDTTornado Warning Tornado observedILMHorry29 min
Sep 5, 4:10 AM EDTTornado WarningILMHorry35 min
Sep 5, 4:23 AM EDTTornado WarningILMHorry37 min
Sep 5, 4:55 AM EDTTornado WarningILMHorry20 min
Sep 5, 5:06 AM EDTTornado WarningILMHorry24 min
Sep 5, 5:18 AM EDTTornado WarningILMHorry27 min
Sep 5, 5:58 AM EDTTornado WarningILMFlorence, Georgetown, Horry, Marion, Williamsburg28 min
Sep 5, 6:03 AM EDTFlash Flood WarningILMHorry4 hr
Sep 5, 6:47 AM EDTTornado WarningILMHorry12 min
Sep 5, 6:51 AM EDTTornado WarningILMHorry39 min
Sep 5, 7:25 AM EDTTornado WarningILMDillon, Horry, Marion50 min
Sep 5, 7:49 AM EDTTornado WarningILMHorry26 min
Sep 5, 8:12 AM EDTTornado WarningILMHorry33 min
Sep 5, 8:21 AM EDTFlash Flood WarningILMGeorgetown, Horry114 min
Sep 5, 9:19 AM EDTTornado WarningILMHorry26 min
Sep 5, 9:27 AM EDTFlash Flood WarningILMGeorgetown, Horry, Marion, Williamsburg2 hr
Sep 5, 9:37 AM EDTRiver Flood WarningILMDillon, Horry, Marion21 days
Sep 5, 9:37 AM EDTRiver Flood WarningILMDarlington, Florence5 days
Sep 5, 9:58 AM EDTTornado WarningILMHorry32 min
Sep 5, 10:06 AM EDTFlash Flood WarningILMHorry114 min
Sep 5, 2:28 PM EDTFlash Flood WarningILMGeorgetown2 hr
Sep 5, 3:29 PM EDTFlash Flood WarningILMGeorgetown, Horry9 hr
Sep 5, 7:57 PM EDTBeach Hazards StatementILMGeorgetown, Horry9 hr
Sep 5, 7:57 PM EDTRip Current StatementILMGeorgetown, Horry21 hr

Nearby

Tornado Warnings in South Carolina, 2019Every tornado warning in 2019Tornadoes in 2019

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.