Alert archive / South Carolina / Tornado Warnings in 2017

Tornado Warning 4, NWS Wilmington, NC

April 5, 2017Georgetown County, Marion County, Williamsburg County, South Carolina

NWS Wilmington, NC issued this tornado warning at Apr 5, 2017, 5:24 PM EDT for Georgetown County, Marion County, Williamsburg County, South Carolina. It was in force for 51 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: Apr 5, 2017, 5:24 PM EDT (21:24 UTC)
Expired: Apr 5, 2017, 6:15 PM EDT
In force: 51 min
Issued by: NWS Wilmington, NC
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Georgetown County, SC, Marion County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 84 km from the middle of the area, began a volume at 21:25 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.

Issued	Product	Office	Lasted
Apr 5, 2:45 PM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 9.4 hours before the alert went out and 112 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 626 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 862 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

As transmitted.

872 
WFUS52 KILM 052124
TORILM
SCC043-067-089-052215-
/O.NEW.KILM.TO.W.0004.170405T2124Z-170405T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Wilmington NC
524 PM EDT WED APR 5 2017

The National Weather Service in Wilmington has issued a

* Tornado Warning for...
  Northern Georgetown County in northeastern South Carolina...
  South central Marion County in northeastern South Carolina...
  East central Williamsburg County in northeastern South Carolina...

* Until 615 PM EDT
    
* At 523 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Warsaw, or 16 miles northwest of Georgetown,
  moving northeast at 45 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Expect damage to mobile homes, roofs, and vehicles. 

* Locations impacted include...
  Plantersville, Rhems, Outland, Warsaw, Yauhannah, Oatland and
  Morrisville.

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 7964 3381 7934 3380 7932 3383 7932
      3388 7926 3384 7926 3383 7925 3382 7926
      3378 7925 3373 7919 3371 7919 3368 7916
      3366 7915 3366 7914 3365 7912 3364 7913
      3362 7912 3336 7943
TIME...MOT...LOC 2123Z 226DEG 40KT 3353 7950 

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

$$

MBB

3 follow-up statements

469 
WWUS52 KILM 052138
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
538 PM EDT WED APR 5 2017

SCC043-067-089-052215-
/O.CON.KILM.TO.W.0004.000000T0000Z-170405T2215Z/
Georgetown SC-Marion SC-Williamsburg SC-
538 PM EDT WED APR 5 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM EDT FOR
NORTHEASTERN GEORGETOWN...SOUTH CENTRAL MARION AND EAST CENTRAL
WILLIAMSBURG COUNTIES...
    
At 538 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Rhems, or 15 miles north of Georgetown, moving
northeast 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. 

Locations impacted include...
Plantersville, Rhems, Outland, Oatland and Yauhannah. 

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 3381 7934 3380 7932 3383 7932 3388 7926
      3384 7926 3383 7925 3382 7926 3378 7925
      3373 7919 3371 7919 3368 7916 3366 7915
      3366 7914 3365 7912 3364 7913 3362 7912
      3346 7932 3365 7952
TIME...MOT...LOC 2138Z 236DEG 34KT 3359 7935 

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

$$

MBB

632 
WWUS52 KILM 052147
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
547 PM EDT WED APR 5 2017

SCC067-089-052157-
/O.CAN.KILM.TO.W.0004.000000T0000Z-170405T2215Z/
Marion SC-Williamsburg SC-
547 PM EDT WED APR 5 2017

...THE TORNADO WARNING FOR SOUTH CENTRAL MARION AND EAST CENTRAL
WILLIAMSBURG COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has weakened 
moved out of the warned area. Therefore, the warning has been 
cancelled.

A tornado watch remains in effect until 800 PM EDT for northeastern
South Carolina.

LAT...LON 3358 7938 3376 7930 3374 7929 3372 7929
      3372 7927 3371 7927 3371 7924 3369 7925
      3370 7922 3370 7920 3371 7920 3368 7916
      3366 7915 3365 7912 3364 7913 3362 7912
      3350 7927
TIME...MOT...LOC 2147Z 234DEG 40KT 3365 7924 

$$

SCC043-052215-
/O.CON.KILM.TO.W.0004.000000T0000Z-170405T2215Z/
Georgetown SC-
547 PM EDT WED APR 5 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM EDT FOR
NORTHEASTERN GEORGETOWN COUNTY...
    
At 547 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Yauhannah, or 12 miles northwest of Murrells Inlet,
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. 

Locations impacted include...
Plantersville and Yauhannah. 

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 3358 7938 3376 7930 3374 7929 3372 7929
      3372 7927 3371 7927 3371 7924 3369 7925
      3370 7922 3370 7920 3371 7920 3368 7916
      3366 7915 3365 7912 3364 7913 3362 7912
      3350 7927
TIME...MOT...LOC 2147Z 234DEG 40KT 3365 7924 

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

$$

MBB

211 
WWUS52 KILM 052205
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
605 PM EDT WED APR 5 2017

SCC043-052215-
/O.EXP.KILM.TO.W.0004.000000T0000Z-170405T2215Z/
Georgetown SC-
605 PM EDT WED APR 5 2017

...THE TORNADO WARNING FOR NORTHEASTERN GEORGETOWN COUNTY WILL EXPIRE
AT 615 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 800 PM EDT for northeastern
South Carolina.

LAT...LON 3358 7938 3376 7930 3374 7929 3372 7929
      3372 7927 3371 7927 3371 7924 3369 7925
      3370 7922 3370 7920 3371 7920 3368 7916
      3366 7915 3365 7912 3364 7913 3362 7912
      3350 7927
TIME...MOT...LOC 2205Z 226DEG 40KT 3379 7907 

$$

MBB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 4:18 AM EDT	Gale Warning	ILM		54 hr
Apr 5, 2:59 PM EDT	Wind Advisory	ILM	Darlington, Dillon, Florence, Georgetown, Horry, Marion and 2 more	31 hr
Apr 5, 3:50 PM EDT	Severe Thunderstorm Warning	ILM	Darlington, Florence	59 min
Apr 5, 4:37 PM EDT	Special Weather Statement	ILM	Williamsburg	38 min
Apr 5, 4:42 PM EDT	Special Weather Statement	ILM	Dillon	33 min
Apr 5, 4:52 PM EDT	Areal Flood Advisory	ILM	Darlington, Florence, Williamsburg	3 hr
Apr 5, 5:02 PM EDT	Severe Thunderstorm Warning	ILM	Dillon, Marion	58 min
Apr 5, 5:11 PM EDT	Severe Thunderstorm Warning	ILM	Georgetown, Williamsburg	29 min
Apr 5, 5:53 PM EDT	Tornado Warning	ILM	Horry	42 min
Apr 5, 6:58 PM EDT	Special Weather Statement	ILM	Horry	32 min
Apr 5, 7:16 PM EDT	Special Marine Warning	ILM		29 min
Apr 5, 7:44 PM EDT	Special Marine Warning	ILM		61 min
Apr 5, 7:48 PM EDT	Special Marine Warning	ILM		57 min

Nearby

Tornado Warnings in South Carolina, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.