Alert archive / North Carolina / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 21, NWS Wilmington, NC

April 5, 2017Brunswick County, New Hanover County, North Carolina

NWS Wilmington, NC issued this severe thunderstorm warning at Apr 5, 2017, 7:29 PM EDT for Brunswick County, New Hanover County, North Carolina. It was in force for 37 min. 2 reports 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, 7:29 PM EDT (23:29 UTC)
Expired: Apr 5, 2017, 8:06 PM EDT
In force: 37 min
Issued by: NWS Wilmington, NC
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Brunswick County, NC, New Hanover County, NC

The radar

The Wilmington radar (KLTX), 37 km from the middle of the area, began a volume at 23:28 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, 7:30 PM EDT	HAIL 1.75	Saint James, NC
Apr 5, 7:50 PM EDT	TSTM WND GST 56	2 Sw Kure Beach, NC

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

Newport, NC (KMHX), launched 12:00Z, 11.5 hours before the alert went out and 140 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: 1779 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 195 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

975 
WUUS52 KILM 052329
SVRILM
NCC019-129-060030-
/O.NEW.KILM.SV.W.0021.170405T2329Z-170406T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wilmington NC
729 PM EDT WED APR 5 2017

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  South central New Hanover County in southeastern North Carolina...
  Southeastern Brunswick County in southeastern North Carolina...

* Until 830 PM EDT

* At 728 PM EDT, a severe thunderstorm was located over St. James, or
  over Oak Island, moving east at 45 mph.

  HAZARD...60 mph wind gusts and half dollar size hail. 

  SOURCE...Trained weather spotters. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Oak Island, Carolina Beach, Kure Beach, Holden Beach, Caswell
  Beach, Bald Head Island, South Masonboro Island, North Masonboro
  Island, Snows Cut, Ocean Crest Pier, Yaupon Beach, Boiling Spring
  Lakes, St. James, Southport, Civie Town, Supply, Brunswick County
  Community College Main Campus, Myrtle Grove, Masonboro and Mill
  Creek.

This includes US Route 17 in Brunswick County between mile markers 19
and 34.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

A tornado watch remains in effect until 800 PM EDT for southeastern
North Carolina.

LAT...LON 3408 7787 3391 7795 3384 7796 3386 7801
      3388 7800 3387 7802 3389 7802 3390 7807
      3391 7814 3391 7828 3407 7836 3419 7781
TIME...MOT...LOC 2328Z 262DEG 37KT 3395 7814 

HAIL...1.25IN
WIND...60MPH
 
$$

MBB

2 follow-up statements

432 
WWUS52 KILM 052355
SVSILM

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

NCC019-060004-
/O.CAN.KILM.SV.W.0021.000000T0000Z-170406T0030Z/
Brunswick NC-
755 PM EDT WED APR 5 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BRUNSWICK COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 800 PM EDT for southeastern
North Carolina.

LAT...LON 3408 7787 3394 7794 3397 7795 3402 7793
      3406 7793 3412 7794 3416 7795 3419 7781
TIME...MOT...LOC 2354Z 255DEG 36KT 3403 7789 

$$

NCC129-060030-
/O.CON.KILM.SV.W.0021.000000T0000Z-170406T0030Z/
New Hanover NC-
755 PM EDT WED APR 5 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR SOUTH CENTRAL NEW HANOVER COUNTY...

At 754 PM EDT, a severe thunderstorm was located over Carolina Beach,
moving east at 40 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Trained weather spotters. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Carolina Beach, Kure Beach, South Masonboro Island, North Masonboro
Island, Snows Cut, Myrtle Grove, Silver Lake, Sea Breeze and
Masonboro.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

A tornado watch remains in effect until 800 PM EDT for southeastern
North Carolina.

LAT...LON 3408 7787 3394 7794 3397 7795 3402 7793
      3406 7793 3412 7794 3416 7795 3419 7781
TIME...MOT...LOC 2354Z 255DEG 36KT 3403 7789 

HAIL...1.25IN
WIND...60MPH
 
$$

MBB

636 
WWUS52 KILM 060006
SVSILM

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

NCC129-060015-
/O.CAN.KILM.SV.W.0021.000000T0000Z-170406T0030Z/
New Hanover NC-
806 PM EDT WED APR 5 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL NEW HANOVER
COUNTY IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.  However heavy rain is
still possible with this thunderstorm.

LAT...LON 3408 7787 3394 7794 3397 7795 3402 7793
      3406 7793 3412 7794 3416 7795 3419 7781
TIME...MOT...LOC 0004Z 262DEG 37KT 3405 7774 

$$

MBB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 2:59 PM EDT	Wind Advisory	ILM	Bladen, Brunswick, Columbus, New Hanover, Pender, Robeson	31 hr
Apr 5, 5:02 PM EDT	Severe Thunderstorm Warning	ILM	Bladen, Columbus, Robeson	58 min
Apr 5, 5:59 PM EDT	Severe Thunderstorm Warning	ILM	Bladen	38 min
Apr 5, 6:46 PM EDT	Special Weather Statement	ILM	Brunswick	59 min
Apr 5, 7:08 PM EDT	Severe Thunderstorm Warning	ILM	Brunswick	45 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2017 Every severe thunderstorm warning 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.