Alert archive / Virginia / Tornado Warnings in 2012

Tornado Warning 20, NWS Wakefield, VA

August 1, 2012Accomack County, Virginia

NWS Wakefield, VA issued this tornado warning at Aug 1, 2012, 1:56 PM EDT for Accomack County, Virginia. It was in force for 34 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 1, 2012, 1:56 PM EDT (17:56 UTC)
Expired
Aug 1, 2012, 2:30 PM EDT
In force
34 min
Issued by
NWS Wakefield, VA
Area
Storm-based polygon

County Accomack County, VA

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 5.9 hours before the alert went out and 39 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, Wallops Is Stn, VA at 12:00Z on 2012-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 273 joules per kilogram.LCLLFCEL10008507005003002001001 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, Wallops Is Stn, VA at 12:00Z on 2012-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 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
273 J/kg
Mixed-layer CIN
-109 J/kg
Mixed-layer LCL
1197 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

235 
WFUS51 KAKQ 011756
TORAKQ
VAC001-011830-
/O.NEW.KAKQ.TO.W.0020.120801T1756Z-120801T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WAKEFIELD VA
156 PM EDT WED AUG 1 2012

THE NATIONAL WEATHER SERVICE IN WAKEFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL ACCOMACK COUNTY IN SOUTHEAST VIRGINIA...

* UNTIL 230 PM EDT

* AT 152 PM EDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO ON 
ROSECOTTAGE ROAD...SOUTHEAST OF ONLEY...OR 11 MILES NORTHEAST OF 
EXMORE. DOPPLER RADAR  SHOWED THIS THUNDERSTORM MOVING EAST AT 10 MPH.

* THE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF SOUTH CENTRAL   
ACCOMACK COUNTY.

PLEASE SEND YOUR REPORTS OF HAIL AND OR WIND DAMAGE...INCLUDING TREES
OR LARGE LIMBS DOWNED...BY CALLING NOAA'S NATIONAL WEATHER SERVICE IN
WAKEFIELD AT...1...800...7 3 7...8 6 2 4.

&&

LAT...LON 3765 7557 3759 7560 3758 7558 3756 7558
      3755 7560 3757 7566 3762 7570 3768 7558
      3768 7557
TIME...MOT...LOC 1755Z 255DEG 6KT 3760 7564

$$

44
2 follow-up statements
943 
WWUS51 KAKQ 011811
SVSAKQ

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
211 PM EDT WED AUG 1 2012

VAC001-011830-
/O.CON.KAKQ.TO.W.0020.000000T0000Z-120801T1830Z/
ACCOMACK VA-
211 PM EDT WED AUG 1 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL ACCOMACK
COUNTY UNTIL 230 PM EDT...

AT 205 PM EDT...A THUNDERSTORM...POSSIBLY PRODUCING A TORNADO...
WAS LOCATED 8 MILES SOUTHEAST OF ONLEY...OR 12 MILES NORTHEAST OF 
EXMORE...MOVING EAST AT 5 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF SOUTHERN ACCOMACK COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE SEND YOUR REPORTS OF HAIL AND OR WIND DAMAGE...INCLUDING TREES
OR LARGE LIMBS DOWNED...BY CALLING NOAA'S NATIONAL WEATHER SERVICE
AT...1...800...7 3 7...8 6 2 4 IN WAKEFIELD.

&&

LAT...LON 3758 7565 3762 7565 3766 7560 3766 7558
      3765 7557 3759 7560 3758 7558 3756 7558
      3755 7560
TIME...MOT...LOC 1810Z 255DEG 6KT 3761 7561

$$

44
752 
WWUS51 KAKQ 011823
SVSAKQ

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
223 PM EDT WED AUG 1 2012

VAC001-011833-
/O.EXP.KAKQ.TO.W.0020.000000T0000Z-120801T1830Z/
ACCOMACK VA-
223 PM EDT WED AUG 1 2012

...THE TORNADO WARNING FOR SOUTH CENTRAL ACCOMACK COUNTY WILL EXPIRE
AT 230 PM EDT...

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

PLEASE SEND YOUR REPORTS OF HAIL AND OR WIND DAMAGE...INCLUDING TREES
OR LARGE LIMBS DOWNED...BY CALLING NOAA'S NATIONAL WEATHER SERVICE
AT...1...800...7 3 7...8 6 2 4 IN WAKEFIELD.

LAT...LON 3758 7565 3762 7565 3766 7560 3766 7558
      3765 7557 3759 7560 3758 7558 3756 7558
      3755 7560
TIME...MOT...LOC 1823Z 255DEG 6KT 3762 7558

$$

44

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 12:17 AM EDTSpecial Weather StatementAKQCumberland, Goochland, Louisa, Powhatan43 min
Aug 1, 4:14 AM EDTSpecial Weather StatementAKQCity of Suffolk31 min
Aug 1, 5:11 AM EDTSpecial Weather StatementAKQAccomack94 min
Aug 1, 6:40 AM EDTSpecial Marine WarningAKQ35 min
Aug 1, 6:51 AM EDTSpecial Marine WarningAKQ39 min
Aug 1, 11:34 AM EDTTornado WarningAKQAccomack26 min
Aug 1, 12:20 PM EDTSpecial Weather StatementAKQCity of Chesapeake, City of Virginia Beach40 min
Aug 1, 12:31 PM EDTAreal Flood AdvisoryAKQAccomack59 min
Aug 1, 12:39 PM EDTSpecial Marine WarningAKQ81 min
Aug 1, 12:51 PM EDTAreal Flood AdvisoryAKQCity of Virginia Beach69 min
Aug 1, 1:32 PM EDTSpecial Marine WarningAKQ43 min
Aug 1, 2:01 PM EDTSpecial Marine WarningAKQ44 min
Aug 1, 6:07 PM EDTSpecial Weather StatementAKQLunenburg53 min
Aug 1, 6:12 PM EDTSevere Thunderstorm WarningAKQLunenburg, Nottoway, Prince Edward33 min
Aug 1, 6:49 PM EDTSpecial Weather StatementAKQLunenburg56 min
Aug 1, 7:45 PM EDTSpecial Weather StatementAKQLunenburg45 min

Nearby

Tornado Warnings in Virginia, 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.