Alert archive / North Carolina / Tornado Warnings in 2017

Tornado Warning 2, NWS Wilmington, NC

February 15, 2017Brunswick County, North Carolina

NWS Wilmington, NC issued this tornado warning at Feb 15, 2017, 11:55 AM EST for Brunswick County, North Carolina. It was in force for 9 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: Feb 15, 2017, 11:55 AM EST (16:55 UTC)
Expired: Feb 15, 2017, 12:04 PM EST
In force: 9 min
Issued by: NWS Wilmington, NC
Area: Storm-based polygon
Tornado: Radar indicated
Damage threat: Considerable

County Brunswick County, NC

The radar

The Wilmington radar (KLTX), 15 km from the middle of the area, began a volume at 16:59 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
Feb 15, 11:57 AM EST	TSTM WND DMG	Longwood, NC	TRACTOR SHED DESTROYED. CHIMNEY BLOWN OVER ONTO ROOF. 2 FOOT DIAMTER TREE BLOWN DOWN. POSSIBLE TORNADO. ETHRIDGE ROAD

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 4.9 hours before the alert went out and 176 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1230 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 180 m²/s²
0-3 km storm-relative helicity: 254 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

792 
WFUS52 KILM 151655
TORILM
NCC019-151745-
/O.NEW.KILM.TO.W.0002.170215T1655Z-170215T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Wilmington NC
1155 AM EST WED FEB 15 2017

The National Weather Service in Wilmington has issued a

* Tornado Warning for...
  Southwestern Brunswick County in southeastern North Carolina...

* Until 1245 PM EST
    
* At 1154 AM EST, a large and extremely dangerous tornado was located
  over Pireway, or 9 miles north of Little River, moving east at 40
  mph.

  This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW! 

  HAZARD...Damaging tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...You are in a life-threatening situation. Flying debris 
           may be deadly to those caught without shelter. Mobile 
           homes will be destroyed. Considerable damage to homes, 
           businesses, and vehicles is likely and complete 
           destruction is possible. 

* The tornado will be near...
  Grissettown around 1200 PM EST. 

This includes US Route 17 in Brunswick County between mile markers 1
and 7.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous and potentially deadly
tornado is developing. To protect your life, 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 3394 7865 3396 7864 3396 7865 3397 7862
      3401 7864 3403 7860 3403 7859 3404 7858
      3405 7855 3388 7846 3387 7850 3385 7854
TIME...MOT...LOC 1654Z 255DEG 37KT 3401 7860 

TORNADO...RADAR INDICATED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...<.75

$$

RGZ

1 follow-up statement

781 
WWUS52 KILM 151704
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
1204 PM EST WED FEB 15 2017

NCC019-151714-
/O.CAN.KILM.TO.W.0002.000000T0000Z-170215T1745Z/
Brunswick NC-
1204 PM EST WED FEB 15 2017

...THE TORNADO WARNING FOR SOUTHWESTERN BRUNSWICK COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has weakened 
and moved out of the warned area. Therefore, the warning has been 
cancelled.

LAT...LON 3394 7865 3396 7864 3396 7865 3397 7862
      3401 7864 3403 7860 3403 7859 3404 7858
      3405 7855 3388 7846 3387 7850 3385 7854
TIME...MOT...LOC 1703Z 255DEG 37KT 3404 7848 

$$

8

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 15, 11:33 AM EST	Special Weather Statement	ILM	Brunswick	57 min
Feb 15, 12:08 PM EST	Severe Thunderstorm Warning	ILM	Brunswick	29 min
Feb 15, 12:10 PM EST	Severe Thunderstorm Warning	ILM	Brunswick, New Hanover	28 min

Nearby

Tornado Warnings in North 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.