Alert archive / North Carolina / Tornado Warnings in 2011

Tornado Warning 21, NWS Newport/Morehead City, NC

April 16, 2011Dare County, Hyde County, North Carolina

NWS Newport/Morehead City, NC issued this tornado warning at Apr 16, 2011, 9:39 PM EDT for Dare County, Hyde County, North Carolina. It was in force for 51 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: Apr 16, 2011, 9:39 PM EDT (01:39 UTC)
Expired: Apr 16, 2011, 10:30 PM EDT
In force: 51 min
Issued by: NWS Newport/Morehead City, NC
Area: Storm-based polygon

Counties Dare County, NC, Hyde County, NC

The radar

The Morehead City radar (KMHX), 142 km from the middle of the area, began a volume at 01:42 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 16, 12:02 PM EDT	Tornado Watch PDS	SPC	11 hr

The nearest sounding before it

Newport, NC (KMHX), launched 00:00Z, 1.7 hours before the alert went out and 142 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: 2506 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 466 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 576 m²/s²
0-3 km storm-relative helicity: 688 m²/s²
Significant tornado parameter: 9.2
Supercell composite: 37.9

Open this sounding in Storm Lab

The text

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

462 
WFUS52 KMHX 170139
TORMHX
NCC055-095-170230-
/O.NEW.KMHX.TO.W.0021.110417T0139Z-110417T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
939 PM EDT SAT APR 16 2011

THE NATIONAL WEATHER SERVICE IN NEWPORT HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN DARE COUNTY IN EASTERN NORTH CAROLINA
  EASTERN HYDE COUNTY IN EASTERN NORTH CAROLINA

* UNTIL 1030 PM EDT

* AT 937 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 5 MILES NORTHEAST OF CENTER OF LAKE MATTAMUSKEET...OR 10
  MILES NORTHWEST OF ENGELHARD...MOVING NORTHEAST AT 55 MPH. QUARTER
  SIZED HAIL AND DAMAGING WINDS IN EXCESS OF 58 MPH ARE ALSO LIKELY
  WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  CENTER OF DARE COUNTY BOMBING RANGE...
  LAKE WORTH...STUMPY POINT...
  MANNS HARBOR...
  WANCHESE...MANTEO...
  WHALEBONE...NAGS HEAD...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER. IF NO SHELTER IS
AVAILABLE LIE DOWN IN A LOW LYING AREA. PROTECT YOURSELF FROM FLYING
DEBRIS.

NIGHTTIME TORNADOES ARE EXTREMELY DANGEROUS AS THEY ARE DIFFICULT TO
SEE. TAKE COVER NOW. DO NOT SEEK VISUAL CONFIRMATION.

PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE BY
CALLING...1...8 0 0...8 8 9...6 8 8 9 OR NOTIFY YOUR LOCAL LAW
ENFORCEMENT AGENCY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT SATURDAY EVENING
FOR EASTERN NORTH CAROLINA.

&&

LAT...LON 3580 7572 3567 7574 3568 7577 3564 7574
      3560 7588 3562 7588 3555 7590 3541 7615
      3559 7629 3560 7622 3569 7613 3566 7604
      3577 7600 3591 7577 3589 7571 3595 7571
      3590 7562 3597 7568 3599 7564 3577 7551
TIME...MOT...LOC 0139Z 235DEG 49KT 3558 7611

$$

8

1 follow-up statement

065 
WWUS52 KMHX 170206
SVSMHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
1006 PM EDT SAT APR 16 2011

NCC055-095-170230-
/O.CON.KMHX.TO.W.0021.000000T0000Z-110417T0230Z/
DARE NC-HYDE NC-
1006 PM EDT SAT APR 16 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT FOR EASTERN
HYDE AND NORTHERN DARE COUNTIES...

AT 1001 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 6 MILES SOUTHWEST OF
CENTER OF DARE COUNTY BOMBING RANGE...OR 12 MILES NORTH OF
ENGELHARD...MOVING NORTHEAST AT 55 MPH.

HAZARDS IN THE WARNING INCLUDE...
A TORNADO.
QUARTER SIZED HAIL.
OTHER DAMAGING WINDS IN EXCESS OF 58 MPH.

LOCATIONS IN THE PATH OF THE STORM INCLUDE... LAKE WORTH...STUMPY
POINT...MANNS HARBOR...WANCHESE...MANTEO...BODIE ISLAND LIGHTHOUSE...
NAGS HEAD AND WHALEBONE.

NIGHTTIME TORNADOES ARE EXTREMELY DANGEROUS AS THEY ARE DIFFICULT TO
SEE. TAKE COVER NOW. DO NOT SEEK VISUAL CONFIRMATION.

WHEN IT IS SAFE TO DO SO...PLEASE CALL IN YOUR REPORTS OF PENNY OR
LARGER SIZED HAIL...AS WELL AS WIND DAMAGE...INCLUDING TREES OR LARGE
LIMBS DOWNED BY CALLING THE NATIONAL WEATHER SERVICE TOLL FREE AT...
1...8 0 0...8 8 9...6 8 8 9.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT SATURDAY EVENING
FOR EASTERN NORTH CAROLINA.

LAT...LON 3580 7572 3567 7574 3568 7577 3564 7574
      3560 7588 3562 7588 3555 7590 3541 7615
      3559 7629 3560 7622 3569 7613 3566 7604
      3577 7600 3591 7577 3589 7571 3595 7571
      3590 7562 3597 7568 3599 7564 3577 7551
TIME...MOT...LOC 0206Z 235DEG 49KT 3571 7589

$$

8

The office that day

Everything else NWS Newport/Morehead City, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 16, 8:14 PM EDT	Tornado Warning	MHX	Carteret, Craven, Jones, Onslow	46 min
Apr 16, 8:22 PM EDT	Special Marine Warning	MHX		37 min
Apr 16, 8:23 PM EDT	Tornado Warning	MHX	Beaufort, Hyde, Tyrrell, Washington	52 min
Apr 16, 8:40 PM EDT	Tornado Warning	MHX	Beaufort, Craven, Pamlico	50 min
Apr 16, 9:01 PM EDT	Special Marine Warning	MHX		44 min
Apr 16, 9:05 PM EDT	Special Marine Warning	MHX		40 min
Apr 16, 9:16 PM EDT	Tornado Warning	MHX	Dare, Tyrrell	44 min
Apr 16, 9:26 PM EDT	Special Marine Warning	MHX		64 min
Apr 16, 9:27 PM EDT	Tornado Warning	MHX	Dare	33 min
Apr 16, 10:23 PM EDT	Severe Thunderstorm Warning	MHX	Dare, Hyde	37 min
Apr 17, 12:15 AM EDT	Small Craft Advisory	MHX		20 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.