Alert archive / Virginia / Special Weather Statements in 2011

Special Weather Statement, NWS Wakefield, VA

August 19, 2011Hanover County, Virginia

NWS Wakefield, VA issued this special weather statement at Aug 19, 2011, 8:57 PM EDT for Hanover County, Virginia. It was in force for 33 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 19, 2011, 8:57 PM EDT (00:57 UTC)
Expired: Aug 19, 2011, 9:30 PM EDT
In force: 33 min
Issued by: NWS Wakefield, VA

County Hanover County, VA

The radar

The Norfolk radar (KAKQ), 91 km from the middle of the area, began a volume at 00:58 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 00:00Z, 1.0 hours before the alert went out and 166 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: 964 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 815 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: -35 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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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wakefield, VA wrote its last area forecast discussion before this special weather statement went out at Aug 19, 4:23 PM EDT, 4 hours 34 minutes earlier.

Area forecast discussion, Aug 19, 4:23 PM EDT, 4 hours 34 minutes before

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Hazardous weather outlook, Aug 19, 5:27 PM EDT, 3 hours 30 minutes before

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In the hours before

Local storm report, Aug 19, 4:50 PM EDT, 4 hours 7 minutes before

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Special weather statement, Aug 19, 6:58 PM EDT, 1 hour 59 minutes before

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Special weather statement, Aug 19, 7:39 PM EDT, 1 hour 18 minutes before

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Special weather statement, Aug 19, 8:25 PM EDT, 32 minutes before

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Special weather statement, Aug 19, 8:48 PM EDT, 9 minutes before

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Special weather statement, Aug 19, 8:57 PM EDT, 0 minutes before

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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 19, 8:25 PM EDT	Special Weather Statement	AKQ	Southampton	35 min
Aug 19, 8:48 PM EDT	Special Weather Statement	AKQ	City of Franklin, City of Suffolk	57 min
Aug 19, 9:30 PM EDT	Special Weather Statement	AKQ	Essex, King and Queen, King William	45 min
Aug 19, 9:36 PM EDT	Special Weather Statement	AKQ	City of Suffolk	54 min
Aug 19, 10:10 PM EDT	Special Weather Statement	AKQ	Essex, King and Queen, New Kent, Richmond	35 min
Aug 19, 11:31 PM EDT	Special Weather Statement	AKQ	Gloucester, Mathews, York	44 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.