Alert archive / North Carolina / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 3, NWS Wilmington, NC

February 15, 2017Brunswick County, New Hanover County, North Carolina

NWS Wilmington, NC issued this severe thunderstorm warning at Feb 15, 2017, 12:10 PM EST for Brunswick County, New Hanover County, North Carolina. It was in force for 28 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, 12:10 PM EST (17:10 UTC)
Expired
Feb 15, 2017, 12:38 PM EST
In force
28 min
Issued by
NWS Wilmington, NC
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Brunswick County, NC, New Hanover County, NC

The radar

The Wilmington radar (KLTX), 36 km from the middle of the area, began a volume at 17:11 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

TimeReportWhereRemark
Feb 15, 12:30 PM ESTTSTM WND DMGGreenbriar, NCLARGE PINE TREE SNAPPED AT THE BASE.

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

The nearest sounding before it

Newport, NC (KMHX), launched 12:00Z, 5.2 hours before the alert went out and 133 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 12:00Z on 2017-02-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2017-02-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 165 square meters per square second.1939587897117Sfc1 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
1 J/kg
Mixed-layer CIN
-114 J/kg
Mixed-layer LCL
1282 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
165 m²/s²
0-3 km storm-relative helicity
228 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

537 
WUUS52 KILM 151710
SVRILM
NCC019-129-151815-
/O.NEW.KILM.SV.W.0003.170215T1710Z-170215T1815Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wilmington NC
1210 PM EST WED FEB 15 2017

The National Weather Service in Wilmington has issued a

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

* Until 115 PM EST

* At 1210 PM EST, a severe thunderstorm was located near Brunswick
  County Community College Main Campus, or 9 miles northeast of
  Shallotte, moving east at 55 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Carolina Beach, South Masonboro Island, Snows Cut, North Masonboro
  Island, Boiling Spring Lakes, Mill Creek, Myrtle Grove, Sea Breeze,
  Brunswick County Community College Main Campus, Silver Lake and
  Bolivia.

This includes US Route 17 in Brunswick County between mile markers 24
and 36.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.

&&

LAT...LON 3402 7790 3404 7835 3415 7828 3414 7784
TIME...MOT...LOC 1710Z 275DEG 50KT 3407 7827 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

RGZ
2 follow-up statements
129 
WWUS52 KILM 151720
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
1220 PM EST WED FEB 15 2017

NCC019-129-151815-
/O.CON.KILM.SV.W.0003.000000T0000Z-170215T1815Z/
New Hanover NC-Brunswick NC-
1220 PM EST WED FEB 15 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM EST
FOR SOUTH CENTRAL NEW HANOVER AND EAST CENTRAL BRUNSWICK COUNTIES...

At 1220 PM EST, a severe thunderstorm was located over Mill Creek, or
9 miles north of Oak Island, moving east at 60 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Carolina Beach, Snows Cut, South Masonboro Island, Boiling Spring
Lakes, Mill Creek, Myrtle Grove, Sea Breeze and Bolivia.

This includes US Route 17 in Brunswick County between mile markers 31
and 34.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.

&&

LAT...LON 3402 7790 3404 7817 3412 7813 3413 7785
TIME...MOT...LOC 1720Z 275DEG 50KT 3406 7810 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

RGZ
423 
WWUS52 KILM 151738
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
1238 PM EST WED FEB 15 2017

NCC019-129-151748-
/O.CAN.KILM.SV.W.0003.000000T0000Z-170215T1815Z/
New Hanover NC-Brunswick NC-
1238 PM EST WED FEB 15 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL NEW HANOVER AND
EAST CENTRAL BRUNSWICK COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.

LAT...LON 3402 7790 3404 7817 3412 7813 3413 7785
TIME...MOT...LOC 1736Z 275DEG 50KT 3404 7780 

$$

RGZ

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 15, 11:33 AM ESTSpecial Weather StatementILMBrunswick57 min
Feb 15, 11:55 AM ESTTornado Warning Considerable damage threatILMBrunswick9 min
Feb 15, 12:08 PM ESTSevere Thunderstorm WarningILMBrunswick29 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2017Every 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.