Alert archive / North Carolina / Tornado Warnings in 2011

Tornado Warning 40, NWS Newport/Morehead City, NC

August 26, 2011Onslow County, North Carolina

NWS Newport/Morehead City, NC issued this tornado warning at Aug 26, 2011, 10:39 PM EDT for Onslow County, North Carolina. It was in force for 36 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
Aug 26, 2011, 10:39 PM EDT (02:39 UTC)
Expired
Aug 26, 2011, 11:15 PM EDT
In force
36 min
Issued by
NWS Newport/Morehead City, NC
Area
Storm-based polygon

County Onslow County, NC

The radar

The Morehead City radar (KMHX), 54 km from the middle of the area, began a volume at 02:40 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.

IssuedProductOfficeLasted
Aug 26, 8:11 PM EDTTornado WatchSPC9 hr

The nearest sounding before it

Newport, NC (KMHX), launched 00:00Z, 2.7 hours before the alert went out and 54 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 2011-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 148 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Newport, NC at 00:00Z on 2011-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 361 square meters per square second.19395878Sfc1 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
148 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
445 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
361 m²/s²
0-3 km storm-relative helicity
415 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.9

Open this sounding in Storm Lab

The text

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

684 
WFUS52 KMHX 270239
TORMHX
NCC133-270315-
/O.NEW.KMHX.TO.W.0040.110827T0239Z-110827T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
1039 PM EDT FRI AUG 26 2011

THE NATIONAL WEATHER SERVICE IN NEWPORT HAS ISSUED A

* TORNADO WARNING FOR...
  ONSLOW COUNTY IN EASTERN NORTH CAROLINA

* UNTIL 1115 PM EDT

* AT 1035 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 9 MILES SOUTH OF HAMMOCKS BEACH...OR 19 MILES SOUTHEAST OF
  CAMP LEJEUNE MAIN GATE...MOVING NORTHWEST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DUCK CREEK...ONSLOW BEACH...
  MARINES...SNEADS FERRY...
  CAMP LEJEUNE MAIN GATE...
  VERONA...DIXON...
  HAWS RUN...

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.

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 500 AM EDT SATURDAY MORNING
FOR EASTERN NORTH CAROLINA.

&&

LAT...LON 3448 7758 3472 7769 3478 7768 3495 7755
      3479 7732 3479 7731 3464 7710 3460 7721
      3453 7732 3444 7750 3445 7753
TIME...MOT...LOC 0238Z 114DEG 48KT 3453 7716

$$

5

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 9:09 PM EDTTornado WarningMHXBeaufort, Hyde, Pamlico36 min
Aug 26, 10:12 PM EDTAreal Flood WarningMHXBeaufort, Carteret, Craven, Dare, Hyde, Jones and 4 more6 hr
Aug 26, 10:53 PM EDTTornado WarningMHXTyrrell, Washington52 min
Aug 26, 10:54 PM EDTTornado WarningMHXBeaufort, Hyde, Tyrrell, Washington36 min
Aug 26, 11:43 PM EDTTornado WarningMHXTyrrell32 min
Aug 27, 4:12 AM EDTRiver Flood WarningMHXJones20 hr
Aug 27, 4:29 AM EDTAreal Flood WarningMHXDare, Hyde6 hr
Aug 27, 4:31 AM EDTAreal Flood WarningMHXBeaufort, Carteret, Craven, Dare, Hyde, Jones and 4 more6 hr
Aug 27, 4:52 AM EDTRiver Flood WarningMHXCraven9 days
Aug 27, 5:47 AM EDTRiver Flood WarningMHXBeaufort16 hr
Aug 27, 9:23 AM EDTAreal Flood WarningMHXDuplin, Greene, Lenoir, Martin, Pitt12 hr
Aug 27, 9:33 AM EDTAreal Flood WarningMHXBeaufort, Carteret, Craven, Dare, Duplin, Hyde and 8 more12 hr
Aug 27, 12:51 PM EDTFlash Flood WarningMHXBeaufort, Craven, Greene, Hyde, Jones, Lenoir and 5 more6 hr
Aug 27, 12:58 PM EDTAreal Flood WarningMHXDare, Hyde6 hr
Aug 27, 4:20 PM EDTRiver Flood WarningMHXDuplin5 hr
Aug 27, 4:20 PM EDTRiver Flood WarningMHXGreene3 days
Aug 27, 4:20 PM EDTRiver Flood WarningMHXPitt8 days
Aug 27, 4:20 PM EDTRiver Flood WarningMHXMartin5 hr
Aug 27, 4:29 PM EDTRiver Flood WarningMHXPitt3 days

Nearby

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