Alert archive / Virginia / Special Weather Statements in 2013

Special Weather Statement, NWS Wakefield, VA

April 12, 201324 counties in Virginia

NWS Wakefield, VA issued this special weather statement at Apr 12, 2013, 6:21 AM EDT for 24 counties in Virginia. It was in force for 54 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: Apr 12, 2013, 6:21 AM EDT (10:21 UTC)
Expired: Apr 12, 2013, 7:15 AM EDT
In force: 54 min
Issued by: NWS Wakefield, VA

All 24 counties

Amelia County, VA, Brunswick County, VA, Caroline County, VA, Chesterfield County, VA, City of Colonial Heights, VA, City of Emporia, VA, City of Hopewell, VA, City of Petersburg, VA, City of Richmond, VA, Cumberland County, VA, Dinwiddie County, VA, Fluvanna County, VA, Goochland County, VA, Greensville County, VA, Hanover County, VA, Henrico County, VA, King William County, VA, Louisa County, VA, Lunenburg County, VA, Mecklenburg County, VA, Nottoway County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA

The radar

The Norfolk radar (KAKQ), 105 km from the middle of the area, began a volume at 10:22 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

Roanoke, VA (KRNK), launched 00:00Z, 10.4 hours before the alert went out and 145 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1699 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 85 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.

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 12, 5:29 AM EDT	Special Weather Statement	AKQ	Cumberland, Powhatan	61 min
Apr 12, 7:16 AM EDT	Special Weather Statement	AKQ	Amelia, Nottoway	44 min
Apr 12, 7:37 AM EDT	Special Weather Statement	AKQ	Caroline	23 min
Apr 12, 7:54 AM EDT	Special Weather Statement	AKQ	Essex, Hanover, City of Richmond	36 min
Apr 12, 2:43 PM EDT	Special Weather Statement	AKQ	City of Franklin, City of Portsmouth, City of Suffolk	47 min
Apr 12, 3:02 PM EDT	Special Weather Statement	AKQ	City of Suffolk	58 min
Apr 12, 3:04 PM EDT	Special Weather Statement	AKQ	City of Suffolk	56 min
Apr 12, 3:34 PM EDT	Special Weather Statement	AKQ	City of Norfolk, City of Portsmouth	41 min
Apr 12, 4:20 PM EDT	Special Weather Statement	AKQ	City of Chesapeake, City of Virginia Beach	55 min
Apr 12, 5:05 PM EDT	Special Weather Statement	AKQ	Northumberland	40 min
Apr 12, 2:31 PM EDT	Special Weather Statement	AKQ	Dorchester	59 min
Apr 12, 3:25 PM EDT	Special Weather Statement	AKQ	Dorchester	65 min
Apr 12, 2:08 PM EDT	Special Weather Statement	AKQ	Northampton	37 min
Apr 12, 3:51 PM EDT	Special Weather Statement	AKQ	Bertie, Camden, Chowan, Gates, Pasquotank, Perquimans	54 min
Apr 12, 4:23 PM EDT	Special Weather Statement	AKQ	Bertie, Chowan	37 min
Apr 12, 4:50 PM EDT	Special Weather Statement	AKQ	Camden, Currituck, Pasquotank, Perquimans	55 min

Nearby

Special Weather Statements in Virginia, 2013 Every special weather statement in 2013

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.