Alert archive / Virginia / Tornado Warnings in 2012

Tornado Warning 22, NWS Wakefield, VA

August 25, 2012City of Norfolk, City of Portsmouth, Virginia

NWS Wakefield, VA issued this tornado warning at Aug 25, 2012, 10:13 AM EDT for City of Norfolk, City of Portsmouth, Virginia. 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: Aug 25, 2012, 10:13 AM EDT (14:13 UTC)
Expired: Aug 25, 2012, 10:45 AM EDT
In force: 32 min
Issued by: NWS Wakefield, VA
Area: Storm-based polygon

Counties City of Norfolk, VA, City of Portsmouth, VA

The radar

The Norfolk radar (KAKQ), 61 km from the middle of the area, began a volume at 14:13 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, 2.2 hours before the alert went out and 138 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: 86 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 860 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -37 m²/s²
0-3 km storm-relative helicity: 64 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.

110 
WFUS51 KAKQ 251413
TORAKQ
VAC710-740-251445-
/O.NEW.KAKQ.TO.W.0022.120825T1413Z-120825T1445Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WAKEFIELD VA
1013 AM EDT SAT AUG 25 2012

THE NATIONAL WEATHER SERVICE IN WAKEFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN CITY OF NORFOLK IN SOUTHEAST VIRGINIA...
  NORTHERN CITY OF PORTSMOUTH IN SOUTHEAST VIRGINIA...

* UNTIL 1045 AM EDT

* AT 1009 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR DOWNTOWN            
  PORTSMOUTH..AND MOVING NORTHWEST AT 20 MPH.

* THIS DANGEROUS STORM WILL BE NEAR...
  NORFOLK NAS AROUND 1025 AM EDT.

OTHER LOCATIONS IMPACTED BY THIS DANGEROUS STORM INCLUDE WARDS
CORNER.

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 3682 7631 3692 7640 3695 7636 3695 7635
      3696 7635 3697 7633 3697 7631 3698 7631
      3699 7630 3686 7624
TIME...MOT...LOC 1413Z 153DEG 18KT 3686 7631

$$

ALBRIGHT

1 follow-up statement

036 
WWUS51 KAKQ 251438
SVSAKQ

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
1038 AM EDT SAT AUG 25 2012

VAC710-740-251448-
/O.EXP.KAKQ.TO.W.0022.000000T0000Z-120825T1445Z/
CITY OF NORFOLK VA-CITY OF PORTSMOUTH VA-
1038 AM EDT SAT AUG 25 2012

...THE TORNADO WARNING FOR NORTHERN CITY OF PORTSMOUTH AND WESTERN
CITY OF NORFOLK COUNTIES WILL EXPIRE AT 1045 AM EDT...

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

LAT...LON 3682 7631 3692 7640 3695 7636 3695 7635
      3696 7635 3697 7633 3697 7631 3698 7631
      3699 7630 3686 7624
TIME...MOT...LOC 1438Z 153DEG 18KT 3697 7638

$$

ALBRIGHT

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 25, 2:01 AM EDT	Special Marine Warning	AKQ		59 min
Aug 25, 2:54 AM EDT	Special Marine Warning	AKQ		81 min
Aug 25, 3:38 AM EDT	Special Weather Statement	AKQ	Greensville, City of Emporia	37 min
Aug 25, 5:16 AM EDT	Special Weather Statement	AKQ	Brunswick, Dinwiddie, Greensville, Prince George, Surry, Sussex and 7 more	119 min
Aug 25, 5:30 AM EDT	Severe Thunderstorm Warning	AKQ	Isle of Wight, City of Hampton, City of Newport News, City of Portsmouth, City of Suffolk	45 min
Aug 25, 5:39 AM EDT	Special Marine Warning	AKQ		81 min
Aug 25, 6:16 AM EDT	Special Weather Statement	AKQ	City of Newport News	59 min
Aug 25, 6:48 AM EDT	Flash Flood Warning	AKQ	York, City of Hampton, City of Newport News, City of Poquoson	117 min
Aug 25, 6:58 AM EDT	Areal Flood Advisory	AKQ	Brunswick, Greensville, City of Emporia	2 hr
Aug 25, 8:25 AM EDT	Special Weather Statement	AKQ	Brunswick, Greensville, Southampton, Sussex, City of Emporia	65 min
Aug 25, 9:14 AM EDT	Special Marine Warning	AKQ		46 min
Aug 25, 9:16 AM EDT	Areal Flood Advisory	AKQ	Dinwiddie, Greensville, Prince George, Southampton, Surry, Sussex and 1 more	104 min
Aug 25, 9:16 AM EDT	Special Marine Warning	AKQ		44 min
Aug 25, 9:54 AM EDT	Special Marine Warning	AKQ		51 min
Aug 25, 9:55 AM EDT	Special Marine Warning	AKQ		35 min
Aug 25, 10:04 AM EDT	Special Weather Statement	AKQ	Northampton	56 min
Aug 25, 10:15 AM EDT	Special Marine Warning	AKQ		37 min
Aug 25, 10:34 AM EDT	Special Marine Warning	AKQ		41 min
Aug 25, 10:56 AM EDT	Special Weather Statement	AKQ	Charles City, Hanover, Henrico, James City, New Kent, Prince George and 3 more	64 min
Aug 25, 10:59 AM EDT	Special Weather Statement	AKQ	Gloucester, Mathews, York, City of Hampton, City of Poquoson	61 min
Aug 25, 11:14 AM EDT	Special Weather Statement	AKQ	Accomack	61 min
Aug 25, 11:51 AM EDT	Special Weather Statement	AKQ	Charles City, Isle of Wight, James City, King William, New Kent, Surry and 3 more	54 min
Aug 25, 11:56 AM EDT	Areal Flood Advisory	AKQ	Accomack, Northampton	3 hr
Aug 25, 11:58 AM EDT	Areal Flood Advisory	AKQ	Charles City, Isle of Wight, James City, Prince George, Surry, Sussex	92 min
Aug 25, 12:39 PM EDT	Areal Flood Advisory	AKQ	Isle of Wight, Southampton	81 min
Aug 25, 12:56 PM EDT	Tornado Warning	AKQ	Accomack	34 min
Aug 25, 12:58 PM EDT	Special Marine Warning	AKQ		62 min
Aug 25, 1:11 PM EDT	Areal Flood Advisory	AKQ	Gloucester, Isle of Wight, James City, Mathews, Surry, York and 3 more	109 min
Aug 25, 1:17 PM EDT	Flash Flood Warning	AKQ	Accomack	88 min
Aug 25, 2:37 PM EDT	Areal Flood Advisory	AKQ	Isle of Wight, York, City of Hampton, City of Newport News, City of Poquoson, City of Portsmouth and 1 more	3 hr
Aug 25, 2:37 PM EDT	Tornado Warning	AKQ	Accomack	38 min
Aug 25, 2:42 PM EDT	Special Marine Warning	AKQ		93 min
Aug 25, 3:03 PM EDT	Flash Flood Warning	AKQ	Accomack, Northampton	117 min
Aug 25, 3:13 PM EDT	River Flood Warning	AKQ	Brunswick	6 hr
Aug 25, 3:40 PM EDT	Special Marine Warning	AKQ		95 min
Aug 25, 4:34 PM EDT	Areal Flood Advisory	AKQ	Accomack	116 min
Aug 25, 4:54 PM EDT	Flash Flood Warning	AKQ	Accomack	50 min
Aug 25, 5:13 PM EDT	Special Marine Warning	AKQ		77 min
Aug 25, 5:22 PM EDT	Special Weather Statement	AKQ	Dinwiddie	53 min
Aug 25, 6:26 PM EDT	Special Weather Statement	AKQ	Dinwiddie, Southampton, Sussex	64 min
Aug 25, 6:44 PM EDT	Special Weather Statement	AKQ	Cumberland	46 min
Aug 25, 7:23 PM EDT	Areal Flood Advisory	AKQ	Accomack	3 hr
Aug 25, 7:28 PM EDT	Special Weather Statement	AKQ	Amelia, City of Petersburg	62 min
Aug 25, 7:41 PM EDT	Areal Flood Advisory	AKQ	Amelia, Cumberland, Powhatan, Prince Edward	3 hr

Nearby

Tornado Warnings in Virginia, 2012 Every tornado warning in 2012 Tornadoes 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.