Alert archive / North Carolina / Tornado Warnings in 2011

Tornado Warning 27, NWS Wilmington, NC

August 18, 2011New Hanover County, North Carolina

NWS Wilmington, NC issued this tornado warning at Aug 18, 2011, 10:16 AM EDT for New Hanover County, North Carolina. It was in force for 14 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: Aug 18, 2011, 10:16 AM EDT (14:16 UTC)
Expired: Aug 18, 2011, 10:30 AM EDT
In force: 14 min
Issued by: NWS Wilmington, NC
Area: Storm-based polygon

County New Hanover County, NC

The radar

The Wilmington radar (KLTX), 49 km from the middle of the area, began a volume at 14:16 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
Aug 18, 10:20 AM EDT	TORNADO	Carolina Beach, NC	REPORT OF TORNADO NEAR SEA AND SUN MOTEL NEAR CAROLINA BEACH AVE SOUTH. LAWN FURNITURE AND UMBRELLAS BLOWN AROUND.
Aug 18, 10:28 AM EDT	TORNADO	Carolina Beach, NC	POLICE REPORTS TWO TORNADOS IN CAROLINA BEACH.

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, 2.3 hours before the alert went out and 124 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: 1390 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 738 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

357 
WFUS52 KILM 181416
TORILM
NCC129-181430-
/O.NEW.KILM.TO.W.0027.110818T1416Z-110818T1430Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WILMINGTON NC
1016 AM EDT THU AUG 18 2011

THE NATIONAL WEATHER SERVICE IN WILMINGTON NC HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN NEW HANOVER COUNTY IN SOUTHEAST NORTH CAROLINA

* UNTIL 1030 AM EDT

* AT 1012 AM EDT...THE PUBLIC HAS REPORT A WATERSPOUT HAS MOVED
  ONSHORE CAROLINA BEACH NEAR THE 1800 BLOCK OF CANAL DRIVE. THIS    
  TORNADO IS DRIFTING TO THE SOUTHWEST.

* SOME LOCATIONS IN THE WARNING INCLUDE...
   CAROLINA BEACH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A 
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE 
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

PLEASE REPORT HAIL...DOWNED TREES OR DAMAGING WINDS TO THE NATIONAL
WEATHER SERVICE IN WILMINGTON NC...TOLL FREE AT 877-633-6772...WHEN
YOU CAN DO SO SAFELY.

LAT...LON 3403 7788 3403 7789 3402 7789 3403 7791
      3403 7793 3407 7792 3407 7788 3404 7788
TIME...MOT...LOC 1415Z 016DEG 1KT 3404 7789

$$

HAWKINS

1 follow-up statement

521 
WWUS52 KILM 181434
SVSILM

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
1034 AM EDT THU AUG 18 2011

NCC129-181441-
/O.EXP.KILM.TO.W.0027.000000T0000Z-110818T1430Z/
NEW HANOVER NC-
1034 AM EDT THU AUG 18 2011

...THE TORNADO WARNING FOR SOUTHERN NEW HANOVER COUNTY HAS HAS BEEN 
REISSUED UNTIL 11 AM ...

AT 1029 AM EDT...THE WATERSPOUT CONTINUES TO MOVE INLAND NEAR 
ALABAMA AVENUE. THUS ANOTHER TORNADO WARNING WAS ISSUED FOR THIS 
AREA UNTIL 11 AM.

PLEASE REPORT DOWNED TREES OR DAMAGING WINDS TO THE NATIONAL WEATHER 
SERVICE IN WILMINGTON NC...TOLL FREE AT 877-633-6772...WHEN YOU CAN 
DO SO SAFELY.

LAT...LON 3403 7788 3403 7789 3402 7789 3403 7791
      3403 7793 3407 7792 3407 7788 3404 7788
TIME...MOT...LOC 1416Z 016DEG 1KT 3404 7789

$$

HAWKINS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 10:30 AM EDT	Tornado Warning	ILM	New Hanover	30 min
Aug 18, 11:06 AM EDT	Special Weather Statement	ILM	Brunswick, New Hanover	54 min
Aug 18, 11:32 AM EDT	Areal Flood Advisory	ILM	Brunswick, New Hanover	102 min
Aug 18, 12:39 PM EDT	Areal Flood Warning	ILM	New Hanover	34 min

Nearby

Tornado Warnings in North Carolina, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.