Alert archive / South Carolina / Tornado Warnings in 2017

Tornado Warning 7, NWS Wilmington, NC

May 4, 2017Horry County, South Carolina

NWS Wilmington, NC issued this tornado warning at May 4, 2017, 11:41 PM EDT for Horry County, South Carolina. It was in force for 34 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: May 4, 2017, 11:41 PM EDT (03:41 UTC)
Expired: May 5, 2017, 12:15 AM EDT
In force: 34 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), 57 km from the middle of the area, began a volume at 03:44 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
May 4, 8:49 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 3.7 hours before the alert went out and 149 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: 401 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 781 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 278 m²/s²
0-3 km storm-relative helicity: 329 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 8.3

Open this sounding in Storm Lab

The text

As transmitted.

984 
WFUS52 KILM 050341
TORILM
SCC051-050415-
/O.NEW.KILM.TO.W.0007.170505T0341Z-170505T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Wilmington NC
1141 PM EDT THU MAY 4 2017

The National Weather Service in Wilmington has issued a

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

* Until 1215 AM EDT
    
* At 1141 PM EDT, a severe thunderstorm capable of producing a
  tornado was located over Francis Marion University, or over Red
  Hill, moving north at 30 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

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

* Locations impacted include...
  Conway, Red Hill, Socastee, Horry, Loris, Hickory Grove, Homewood,
  Horry Georgetown Technical College Conway Campus, Adrian,
  Bucksville, Forestbrook, Coastal Carolina University, Bayboro,
  Allsbrook, Green Sea, Loris Community Hospital, Lighthouse Care
  Center Of Conway and Conway Medical Center.

This includes the following highways...
 SC Highway 31 near mile marker 5.
 SC Highway 22 between mile markers 1 and 16.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3371 7915 3421 7915 3422 7913 3421 7896
      3411 7885 3370 7894
TIME...MOT...LOC 0341Z 185DEG 27KT 3379 7904 

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

$$

DCH

2 follow-up statements

434 
WWUS52 KILM 050403
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
1203 AM EDT FRI MAY 5 2017

SCC051-050415-
/O.CON.KILM.TO.W.0007.000000T0000Z-170505T0415Z/
Horry SC-
1203 AM EDT FRI MAY 5 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT FOR CENTRAL
HORRY COUNTY...
    
At 1200 AM EDT, a severe thunderstorm capable of producing a tornado
was located over Adrian, or 7 miles north of Conway, moving north at 
30 mph.  Another potential severe thunderstorm was located 2 miles 
south of Green Sea and showed some signs of possibly putting down a 
brief tornado. It too was moving north at 30 mph. 

HAZARD...TORNADO. 

SOURCE...Radar indicated rotation. 

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

Locations impacted include...
Loris, Hickory Grove, Homewood, Adrian, Bayboro, Allsbrook, Green Sea
and Loris Community Hospital.

This includes SC Highway 22 between mile markers 5 and 16.
 
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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 3386 7909 3415 7907 3421 7906 3421 7896
      3411 7885 3386 7891
TIME...MOT...LOC 0400Z 185DEG 27KT 3394 7902 

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

$$

DCH

808 
WWUS52 KILM 050412
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
1212 AM EDT FRI MAY 5 2017

SCC051-050422-
/O.EXP.KILM.TO.W.0007.000000T0000Z-170505T0415Z/
Horry SC-
1212 AM EDT FRI MAY 5 2017

...THE TORNADO WARNING FOR CENTRAL HORRY COUNTY WILL EXPIRE AT 1215
AM EDT...
                
The storms which prompted the warning have weakened below severe 
limits, and no longer appears capable of producing tornadoes.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 300 AM EDT for southeastern
North Carolina...and northeastern South Carolina.

LAT...LON 3386 7909 3415 7907 3421 7906 3421 7896
      3411 7885 3386 7891
TIME...MOT...LOC 0412Z 185DEG 27KT 3402 7901 

$$

DCH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 9:30 PM EDT	Special Weather Statement	ILM	Darlington	60 min
May 4, 10:31 PM EDT	Special Weather Statement	ILM	Marion	59 min
May 4, 10:36 PM EDT	Tornado Warning	ILM	Florence, Marion	39 min
May 4, 11:09 PM EDT	Special Weather Statement	ILM	Horry	51 min
May 5, 1:27 AM EDT	Special Marine Warning	ILM		63 min
May 5, 2:51 AM EDT	Areal Flood Advisory	ILM	Darlington, Marlboro	114 min
May 5, 3:27 AM EDT	Special Weather Statement	ILM	Marion	33 min
May 5, 3:29 AM EDT	Special Marine Warning	ILM		46 min
May 5, 3:50 AM EDT	Special Marine Warning	ILM		25 min
May 5, 4:00 AM EDT	Special Weather Statement	ILM	Marion	30 min
May 5, 4:04 AM EDT	Severe Thunderstorm Warning	ILM	Dillon, Horry, Marion	26 min
May 5, 4:24 AM EDT	Special Marine Warning	ILM		36 min
May 5, 5:25 AM EDT	Beach Hazards Statement	ILM	Georgetown, Horry	15 hr
May 5, 6:22 AM EDT	Small Craft Advisory	ILM		51 hr
May 5, 6:45 AM EDT	Special Marine Warning	ILM		30 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.