Alert archive / Virginia / Special Weather Statements in 2011

Special Weather Statement, NWS Wakefield, VA

August 7, 2011Fluvanna County, Virginia

NWS Wakefield, VA issued this special weather statement at Aug 7, 2011, 4:45 PM EDT for Fluvanna County, Virginia. It was in force for 60 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 7, 2011, 4:45 PM EDT (20:45 UTC)
Expired: Aug 7, 2011, 5:45 PM EDT
In force: 60 min
Issued by: NWS Wakefield, VA

County Fluvanna County, VA

The radar

The Sterling radar (KLWX), 115 km from the middle of the area, began a volume at 20:45 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.8 hours before the alert went out and 116 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: 1180 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 564 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

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
Aug 7, 11:40 AM EDT	Heat Advisory	AKQ	Amelia, Brunswick, Charles City, Cumberland, Dinwiddie, Gloucester and 25 more	7 hr
Aug 7, 5:29 PM EDT	Special Weather Statement	AKQ	Fluvanna, Goochland, Louisa	61 min
Aug 7, 6:14 PM EDT	Special Weather Statement	AKQ	Caroline, Hanover, King William	61 min
Aug 7, 6:17 PM EDT	Special Weather Statement	AKQ	Amelia, Cumberland, Goochland, Powhatan	58 min
Aug 7, 7:03 PM EDT	Special Weather Statement	AKQ	King and Queen, King William	42 min
Aug 7, 7:09 PM EDT	Special Weather Statement	AKQ	Chesterfield, Henrico, Prince George, City of Colonial Heights, City of Hopewell, City of Petersburg and 1 more	66 min
Aug 7, 7:17 PM EDT	Special Weather Statement	AKQ	Amelia	58 min
Aug 7, 7:36 PM EDT	Special Weather Statement	AKQ	Gloucester, Lancaster, Mathews, Middlesex	39 min

Nearby

Special Weather Statements in Virginia, 2011 Every special weather statement 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.