Alert archive / North Carolina / Tornado Warnings in 2011

Tornado Warning 76, NWS Wakefield, VA

September 23, 2011Camden County, Currituck County, North Carolina

NWS Wakefield, VA issued this tornado warning at Sep 23, 2011, 5:14 PM EDT for Camden County, Currituck County, North Carolina. It was in force for 16 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 23, 2011, 5:14 PM EDT (21:14 UTC)
Expired: Sep 23, 2011, 5:30 PM EDT
In force: 16 min
Issued by: NWS Wakefield, VA
Area: Storm-based polygon

Counties Camden County, NC, Currituck County, NC

The radar

The Norfolk radar (KAKQ), 120 km from the middle of the area, began a volume at 21:15 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 nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.2 hours before the alert went out and 177 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: 57 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 903 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

825 
WFUS51 KAKQ 232114
TORAKQ
NCC029-053-232130-
/O.NEW.KAKQ.TO.W.0076.110923T2114Z-110923T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WAKEFIELD VA
514 PM EDT FRI SEP 23 2011

THE NATIONAL WEATHER SERVICE IN WAKEFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL CAMDEN COUNTY IN NORTHEAST NORTH CAROLINA...
  EASTERN CURRITUCK COUNTY IN NORTHEAST NORTH CAROLINA...

* UNTIL 530 PM EDT

* AT 510 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR POPLAR BRANCH...OR NEAR COINJOCK...AND
  MOVING NORTHEAST AT 40 MPH.

* THIS DANGEROUS STORM WILL BE NEAR...
  COROLLA AROUND 525 PM EDT.

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...A VEHICLE... OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3628 7601 3643 7593 3642 7591 3636 7591
      3629 7587 3633 7586 3634 7583 3640 7588
      3642 7587 3642 7586 3644 7590 3648 7591
      3655 7588 3654 7585 3633 7580 3623 7592
TIME...MOT...LOC 2114Z 214DEG 33KT 3633 7591

$$

ALBRIGHT

1 follow-up statement

694 
WWUS51 KAKQ 232139
SVSAKQ

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
539 PM EDT FRI SEP 23 2011

NCC029-053-232150-
/O.EXP.KAKQ.TO.W.0076.000000T0000Z-110923T2130Z/
CAMDEN NC-CURRITUCK NC-
539 PM EDT FRI SEP 23 2011

...THE TORNADO WARNING FOR EASTERN CURRITUCK AND EAST CENTRAL CAMDEN
COUNTIES HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.

LAT...LON 3628 7601 3643 7593 3642 7591 3636 7591
      3629 7587 3633 7586 3634 7583 3640 7588
      3642 7587 3642 7586 3644 7590 3648 7591
      3655 7588 3654 7585 3633 7580 3623 7592
TIME...MOT...LOC 2114Z 214DEG 33KT 3633 7591

$$

BHURLEY

The office that day

Everything else NWS Wakefield, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 23, 2:17 PM EDT	Areal Flood Advisory	AKQ	Bertie, Camden, Chowan, Currituck, Gates, Hertford and 3 more	103 min
Sep 23, 3:02 PM EDT	Areal Flood Advisory	AKQ	Northampton	2 hr
Sep 23, 3:22 PM EDT	Tornado Warning	AKQ	Camden, Gates, Pasquotank, Perquimans	23 min
Sep 23, 3:59 PM EDT	Areal Flood Advisory	AKQ	Bertie, Camden, Chowan, Currituck, Gates, Hertford and 2 more	2 hr
Sep 23, 4:52 PM EDT	Tornado Warning	AKQ	Camden, Currituck, Pasquotank	23 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.