Alert archive / North Carolina / Tornado Warnings in 2017

Tornado Warning 21, NWS Wilmington, NC

October 23, 2017Brunswick County, Pender County, North Carolina

NWS Wilmington, NC issued this tornado warning at Oct 23, 2017, 11:46 PM EDT for Brunswick County, Pender County, North Carolina. It was in force for 33 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
Oct 23, 2017, 11:46 PM EDT (03:46 UTC)
Expired
Oct 24, 2017, 12:19 AM EDT
In force
33 min
Issued by
NWS Wilmington, NC
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Brunswick County, NC, Pender County, NC

The radar

The Wilmington radar (KLTX), 45 km from the middle of the area, began a volume at 03:50 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 nearest sounding before it

Newport, NC (KMHX), launched 00:00Z, 3.8 hours before the alert went out and 125 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, Newport, NC at 00:00Z on 2017-10-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 531 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Newport, NC at 00:00Z on 2017-10-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 206 square meters per square second.193958Sfc1 km3 km6 km9 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
531 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
678 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
206 m²/s²
0-3 km storm-relative helicity
195 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.2

Open this sounding in Storm Lab

The text

As transmitted.

006 
WFUS52 KILM 240346
TORILM
NCC019-141-240430-
/O.NEW.KILM.TO.W.0021.171024T0346Z-171024T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Wilmington NC
1146 PM EDT MON OCT 23 2017

The National Weather Service in Wilmington has issued a

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

* Until 1230 AM EDT
    
* At 1146 PM EDT, a severe thunderstorm capable of producing a
  tornado was located near Makatoka, or near Shallotte, moving
  northeast at 45 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

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

* Locations impacted include...
  Northwest, Makatoka, Civie Town, Honey Island, Supply, Montague,
  Batarora, Currie, The Borough, Phoenix, Brunswick County Community
  College Main Campus, Sandy Creek and Brunswick Novant Medical
  Center.

This includes the following highways...
 US Route 74 between mile markers 423 and 430.
 US Route 17 in Brunswick County between mile markers 16 and 24.

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 3438 7796 3437 7799 3436 7798 3434 7800
      3433 7803 3432 7803 3432 7801 3395 7831
      3406 7849 3421 7836 3422 7825 3435 7816
      3435 7820 3437 7821 3447 7812 3441 7794
TIME...MOT...LOC 0346Z 216DEG 38KT 3407 7835 

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

$$

RGZ
3 follow-up statements
614 
WWUS52 KILM 240355
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
1155 PM EDT MON OCT 23 2017

NCC019-141-240430-
/O.CON.KILM.TO.W.0021.000000T0000Z-171024T0430Z/
Pender NC-Brunswick NC-
1155 PM EDT MON OCT 23 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT FOR
SOUTHWESTERN PENDER AND NORTHEASTERN BRUNSWICK COUNTIES...
    
At 1154 PM EDT, radar indicated that a tornado was located near 
Honey Island, or 12 miles northeast of Shallotte, moving northeast 
at 45 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. 

Locations impacted include...
Northwest, Batarora, Currie, The Borough, Phoenix, Montague and Sandy
Creek.

This includes US Route 74 between mile markers 423 and 430.
 
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 3438 7796 3437 7799 3436 7798 3434 7800
      3433 7803 3432 7803 3432 7801 3404 7825
      3412 7839 3419 7832 3422 7825 3435 7816
      3439 7815 3447 7812 3441 7794
TIME...MOT...LOC 0354Z 216DEG 38KT 3414 7829 

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

$$

RGZ
957 
WWUS52 KILM 240405
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
1205 AM EDT TUE OCT 24 2017

NCC019-141-240430-
/O.CON.KILM.TO.W.0021.000000T0000Z-171024T0430Z/
Pender NC-Brunswick NC-
1205 AM EDT TUE OCT 24 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT FOR
SOUTHWESTERN PENDER AND NORTHEASTERN BRUNSWICK COUNTIES...
    
At 1204 AM EDT, a severe thunderstorm capable of producing a tornado
was located near Batarora, or 12 miles west of Leland, 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...
Northwest, Batarora, Currie, The Borough, Phoenix, Montague and Sandy
Creek.

This includes US Route 74 between mile markers 423 and 429.
 
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 3438 7796 3437 7799 3436 7798 3434 7800
      3433 7803 3432 7803 3411 7820 3417 7829
      3420 7830 3422 7825 3435 7816 3439 7815
      3447 7812 3441 7794
TIME...MOT...LOC 0404Z 213DEG 33KT 3421 7824 

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

$$

RGZ
932 
WWUS52 KILM 240419
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
1219 AM EDT TUE OCT 24 2017

NCC019-141-240428-
/O.CAN.KILM.TO.W.0021.000000T0000Z-171024T0430Z/
Pender NC-Brunswick NC-
1219 AM EDT TUE OCT 24 2017

...THE TORNADO WARNING FOR SOUTHWESTERN PENDER AND NORTHEASTERN
BRUNSWICK COUNTIES 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 gusty winds and
heavy rain are still possible with this thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Wilmington.

LAT...LON 3438 7796 3437 7799 3436 7798 3434 7800
      3433 7803 3432 7803 3411 7820 3417 7829
      3420 7830 3422 7825 3435 7816 3439 7815
      3447 7812 3441 7794
TIME...MOT...LOC 0417Z 216DEG 38KT 3434 7813 

$$

RGZ

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 23, 9:57 PM EDTSevere Thunderstorm WarningILMBrunswick, Columbus38 min
Oct 23, 10:08 PM EDTSpecial Weather StatementILMColumbus67 min
Oct 23, 10:18 PM EDTSpecial Weather StatementILMPender57 min
Oct 23, 10:27 PM EDTSpecial Weather StatementILMRobeson63 min
Oct 23, 11:45 PM EDTSpecial Weather StatementILMBrunswick, New Hanover, Pender60 min
Oct 24, 12:50 AM EDTSpecial Weather StatementILMNew Hanover, Pender40 min

Nearby

Tornado Warnings in North Carolina, 2017Every tornado warning in 2017Tornadoes 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.