Alert archive / North Carolina / Tornado Warnings in 2012

Tornado Warning 13, NWS Newport/Morehead City, NC

September 18, 2012Craven County, North Carolina

NWS Newport/Morehead City, NC issued this tornado warning at Sep 18, 2012, 4:58 PM EDT for Craven County, North Carolina. It was in force for 32 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
Sep 18, 2012, 4:58 PM EDT (20:58 UTC)
Expired
Sep 18, 2012, 5:30 PM EDT
In force
32 min
Issued by
NWS Newport/Morehead City, NC
Area
Storm-based polygon

County Craven County, NC

The radar

The Morehead City radar (KMHX), 51 km from the middle of the area, began a volume at 20:59 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
Sep 18, 1:00 PM EDTTornado WatchSPC5 hr

The nearest sounding before it

Newport, NC (KMHX), launched 12:00Z, 9.0 hours before the alert went out and 50 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 2012-09-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1124 joules per kilogram.LCLEL10008507005003002001001 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 2012-09-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 square meters per square second.193958Sfc1 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
1124 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
683 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
215 m²/s²
Significant tornado parameter
0.7
Supercell composite
6.1

Open this sounding in Storm Lab

The text

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

140 
WFUS52 KMHX 182058
TORMHX
NCC049-182130-
/O.NEW.KMHX.TO.W.0013.120918T2058Z-120918T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
458 PM EDT TUE SEP 18 2012

THE NATIONAL WEATHER SERVICE IN NEWPORT HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL CRAVEN COUNTY IN EASTERN NORTH CAROLINA

* UNTIL 530 PM EDT

* AT 454 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO OVER LIMA...OR 6 MILES NORTH OF NEW BERN...MOVING NORTHEAST
  AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SPRING HOPE...
  CAYTON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 800 PM EDT TUESDAY EVENING
FOR EASTERN NORTH CAROLINA.

&&

LAT...LON 3523 7724 3535 7706 3530 7696 3525 7690
      3523 7691 3522 7695 3522 7694 3520 7697
      3516 7697 3515 7698 3509 7710
TIME...MOT...LOC 2058Z 232DEG 29KT 3522 7708

$$

11
1 follow-up statement
809 
WWUS52 KMHX 182124
SVSMHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
524 PM EDT TUE SEP 18 2012

NCC049-182134-
/O.EXP.KMHX.TO.W.0013.000000T0000Z-120918T2130Z/
CRAVEN NC-
524 PM EDT TUE SEP 18 2012

...THE TORNADO WARNING FOR CENTRAL CRAVEN COUNTY EXPIRES AT 530 PM
EDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA AND 
THE WARNING WILL BE ALLOWED TO EXPIRE.

IF YOU OBSERVED SEVERE WEATHER INCLUDING DAMAGING WINDS OR LARGE
HAIL...PLEASE CONTACT THE NATIONAL WEATHER SERVICE BY CALLING TOLL
FREE 1...8 0 0...8 8 9...6 8 8 9...OR NOTIFY YOUR NEAREST LAW
ENFORCEMENT AGENCY AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL
WEATHER SERVICE FORECAST OFFICE IN NEWPORT.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT TUESDAY EVENING
FOR EASTERN NORTH CAROLINA.

LAT...LON 3523 7724 3535 7706 3530 7696 3525 7690
      3523 7691 3522 7695 3522 7694 3520 7697
      3516 7697 3515 7698 3509 7710
TIME...MOT...LOC 2124Z 232DEG 29KT 3535 7688

$$

11

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 18, 11:02 AM EDTSpecial Weather StatementMHXGreene, Jones, Lenoir, Onslow58 min
Sep 18, 12:00 PM EDTSpecial Weather StatementMHXDuplin, Lenoir45 min
Sep 18, 12:41 PM EDTSpecial Weather StatementMHXCarteret, Pamlico49 min
Sep 18, 1:08 PM EDTSpecial Weather StatementMHXBeaufort, Washington67 min
Sep 18, 1:11 PM EDTSpecial Marine WarningMHX64 min
Sep 18, 1:29 PM EDTSpecial Weather StatementMHXCraven, Jones, Onslow61 min
Sep 18, 1:37 PM EDTSpecial Weather StatementMHXPamlico, Tyrrell53 min
Sep 18, 2:30 PM EDTSpecial Weather StatementMHXBeaufort, Carteret, Hyde, Pamlico60 min
Sep 18, 3:00 PM EDTSpecial Weather StatementMHXDuplin60 min
Sep 18, 3:16 PM EDTSpecial Marine WarningMHX59 min
Sep 18, 3:48 PM EDTSpecial Weather StatementMHXJones, Lenoir, Onslow57 min
Sep 18, 3:50 PM EDTSpecial Marine WarningMHX55 min
Sep 18, 3:57 PM EDTSpecial Marine WarningMHX63 min
Sep 18, 4:14 PM EDTSpecial Marine WarningMHX61 min
Sep 18, 4:24 PM EDTTornado WarningMHXJones18 min
Sep 18, 4:33 PM EDTTornado WarningMHXCraven27 min
Sep 18, 4:52 PM EDTSpecial Weather StatementMHXGreene, Pitt53 min
Sep 18, 4:58 PM EDTSpecial Weather StatementMHXOnslow47 min
Sep 18, 5:11 PM EDTTornado WarningMHXBeaufort, Craven19 min
Sep 18, 5:19 PM EDTSpecial Marine WarningMHX56 min
Sep 18, 5:21 PM EDTSpecial Weather StatementMHXCarteret, Pamlico54 min

Nearby

Tornado Warnings in North Carolina, 2012Every tornado warning in 2012Tornadoes in 2012

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.