Alert archive / Virginia / Special Weather Statements in 2018

Special Weather Statement, NWS Wakefield, VA

August 30, 2018Henrico County, Virginia

NWS Wakefield, VA issued this special weather statement at Aug 30, 2018, 3:21 PM EDT for Henrico County, Virginia. It was in force for 24 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 30, 2018, 3:21 PM EDT (19:21 UTC)
Expired: Aug 30, 2018, 3:45 PM EDT
In force: 24 min
Issued by: NWS Wakefield, VA

County Henrico County, VA

The radar

The Norfolk radar (KAKQ), 61 km from the middle of the area, began a volume at 19:22 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 12:00Z, 7.4 hours before the alert went out and 189 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: 609 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 928 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -33 m²/s²
0-3 km storm-relative helicity: -10 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 30, 3:13 PM EDT, 8 minutes earlier.

Area forecast discussion, Aug 30, 3:13 PM EDT, 8 minutes before

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Hazardous weather outlook, Aug 30, 3:00 AM EDT, 12 hours 21 minutes before

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In the hours before

Special weather statement, Aug 30, 2:55 PM EDT, 26 minutes before

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Special weather statement, Aug 30, 3:02 PM EDT, 19 minutes before

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Special weather statement, Aug 30, 3:10 PM EDT, 11 minutes before

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Special weather statement, Aug 30, 3:16 PM EDT, 5 minutes before

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Special weather statement, Aug 30, 3:21 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 30, 2:55 PM EDT	Special Weather Statement	AKQ	Dinwiddie	35 min
Aug 30, 3:02 PM EDT	Special Weather Statement	AKQ	Henrico	28 min
Aug 30, 3:10 PM EDT	Special Weather Statement	AKQ	City of Virginia Beach	35 min
Aug 30, 3:16 PM EDT	Special Weather Statement	AKQ	Louisa	29 min
Aug 30, 3:34 PM EDT	Special Weather Statement	AKQ	James City	26 min
Aug 30, 3:44 PM EDT	Special Weather Statement	AKQ	City of Virginia Beach	31 min
Aug 30, 3:49 PM EDT	Special Weather Statement	AKQ	Louisa	26 min
Aug 30, 3:53 PM EDT	Special Weather Statement	AKQ	Prince George	37 min
Aug 30, 4:00 PM EDT	Areal Flood Advisory	AKQ	City of Virginia Beach	2 hr
Aug 30, 4:09 PM EDT	Special Weather Statement	AKQ	City of Norfolk	51 min
Aug 30, 4:16 PM EDT	Special Weather Statement	AKQ	Gloucester	44 min
Aug 30, 4:23 PM EDT	Special Weather Statement	AKQ	City of Chesapeake	37 min
Aug 30, 4:30 PM EDT	Special Weather Statement	AKQ	Fluvanna	30 min
Aug 30, 4:49 PM EDT	Areal Flood Advisory	AKQ	City of Chesapeake, City of Norfolk, City of Portsmouth	116 min
Aug 30, 4:58 PM EDT	Special Weather Statement	AKQ	Cumberland, Fluvanna	47 min
Aug 30, 5:17 PM EDT	Special Weather Statement	AKQ	Middlesex	28 min
Aug 30, 5:18 PM EDT	Special Weather Statement	AKQ	James City	42 min
Aug 30, 5:42 PM EDT	Areal Flood Advisory	AKQ	Cumberland, Powhatan	3 hr
Aug 30, 5:52 PM EDT	Special Weather Statement	AKQ	Middlesex	23 min
Aug 30, 5:56 PM EDT	Special Weather Statement	AKQ	Amelia	49 min
Aug 30, 6:01 PM EDT	Special Weather Statement	AKQ	City of Richmond	29 min
Aug 30, 6:05 PM EDT	Special Weather Statement	AKQ	Cumberland	25 min
Aug 30, 6:19 PM EDT	Special Weather Statement	AKQ	Goochland	26 min
Aug 30, 6:25 PM EDT	Special Weather Statement	AKQ	Dinwiddie	35 min
Aug 30, 6:30 PM EDT	Special Weather Statement	AKQ	Prince Edward	45 min
Aug 30, 6:45 PM EDT	Areal Flood Advisory	AKQ	Goochland, Louisa, Powhatan	3 hr
Aug 30, 6:48 PM EDT	Areal Flood Advisory	AKQ	Nottoway	5 hr
Aug 30, 7:12 PM EDT	Special Weather Statement	AKQ	Prince George, Sussex	33 min
Aug 30, 7:19 PM EDT	Special Weather Statement	AKQ	Prince Edward	26 min
Aug 30, 7:25 PM EDT	Special Weather Statement	AKQ	Prince Edward	20 min
Aug 30, 7:31 PM EDT	Special Weather Statement	AKQ	Chesterfield	29 min
Aug 30, 7:38 PM EDT	Special Weather Statement	AKQ	Fluvanna	37 min
Aug 30, 7:43 PM EDT	Severe Thunderstorm Warning	AKQ	Amelia, Chesterfield, Powhatan, City of Richmond	47 min
Aug 30, 7:53 PM EDT	Special Weather Statement	AKQ	Prince Edward	37 min
Aug 30, 7:56 PM EDT	Areal Flood Advisory	AKQ	Prince Edward	2 hr
Aug 30, 7:56 PM EDT	Areal Flood Advisory	AKQ	Chesterfield, City of Richmond	2 hr

Nearby

Special Weather Statements in Virginia, 2018 Every special weather statement in 2018

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.