Alert archive / South Carolina / Tornado Warnings in 2017

Tornado Warning 5, NWS Wilmington, NC

April 5, 2017Horry County, South Carolina

NWS Wilmington, NC issued this tornado warning at Apr 5, 2017, 5:53 PM EDT for Horry County, South Carolina. It was in force for 42 min. 1 report 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 5, 2017, 5:53 PM EDT (21:53 UTC)
Expired: Apr 5, 2017, 6:35 PM EDT
In force: 42 min
Issued by: NWS Wilmington, NC
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Horry County, SC

The radar

The Wilmington radar (KLTX), 65 km from the middle of the area, began a volume at 21:56 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

Time	Report	Where	Remark
Apr 5, 6:00 PM EDT	HAIL 1	2 N Bucksport, SC	RELAYED BY MEDIA.

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.

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, 9.9 hours before the alert went out and 126 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.

043 
WFUS52 KILM 052153
TORILM
SCC051-052300-
/O.NEW.KILM.TO.W.0005.170405T2153Z-170405T2300Z/

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

The National Weather Service in Wilmington has issued a

* Tornado Warning for...
  Southern Horry County in northeastern South Carolina...

* Until 700 PM EDT
    
* At 553 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Bucksport, or 8 miles west of Socastee, 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. 

* Locations impacted include...
  Myrtle Beach, Conway, North Myrtle Beach, Myrtle Beach Airport,
  Socastee, Red Hill, Little River, North Myrtle Beach Airport,
  Cherry Grove Inlet, Little River Entrance, Loris, Hickory Grove,
  Homewood, Horry Georgetown Technical College Conway Campus,
  Nixonville, Barefoot Landing Area Of North Myrtle Beach, Bucksport,
  Dongola, Wampee and Goretown.

This includes the following highways...
 SC Highway 31 between mile markers 5 and 24.
 SC Highway 22 between mile markers 10 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 3361 7910 3360 7911 3363 7913 3364 7913
      3365 7912 3366 7914 3366 7915 3368 7916
      3371 7919 3373 7919 3375 7922 3410 7883
      3385 7854 3380 7871 3374 7882 3364 7894
      3357 7910
TIME...MOT...LOC 2153Z 239DEG 42KT 3367 7915 

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

$$

MBB

2 follow-up statements

288 
WWUS52 KILM 052219
SVSILM

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

SCC051-052300-
/O.CON.KILM.TO.W.0005.000000T0000Z-170405T2300Z/
Horry SC-
619 PM EDT WED APR 5 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR CENTRAL
HORRY COUNTY...
    
At 618 PM EDT, a severe thunderstorm capable of producing a tornado 
was located over Forestbrook, north of Myrtle Beach Airport, moving 
northeast at 35 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...
Myrtle Beach, North Myrtle Beach, Red Hill, Little River, North
Myrtle Beach Airport, Cherry Grove Inlet, Little River Entrance,
Myrtle Beach Airport, Socastee, Hickory Grove, Horry Georgetown
Technical College Conway Campus, Nixonville, Barefoot Landing Area Of
North Myrtle Beach, Wampee, Goretown, Cherry Grove Beach, Hand,
Forestbrook, Longs and Hammond.

This includes the following highways...
 SC Highway 31 between mile markers 5 and 24.
 SC Highway 22 between mile markers 15 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 3368 7896 3380 7907 3406 7879 3385 7854
      3380 7871 3374 7882 3372 7884
TIME...MOT...LOC 2218Z 235DEG 31KT 3374 7894 

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

$$

MBB

684 
WWUS52 KILM 052235
SVSILM

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

SCC051-052245-
/O.CAN.KILM.TO.W.0005.000000T0000Z-170405T2300Z/
Horry SC-
635 PM EDT WED APR 5 2017

...THE TORNADO WARNING FOR 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 small hail, gusty
winds and heavy rain are still possible with this thunderstorm.

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

LAT...LON 3368 7896 3380 7907 3406 7879 3385 7854
      3380 7871 3374 7882 3372 7884
TIME...MOT...LOC 2233Z 239DEG 42KT 3384 7873 

$$

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, 5:24 PM EDT	Tornado Warning	ILM	Georgetown, Marion, Williamsburg	51 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.