Alert archive / Virginia / Coastal Flood Statements in 2018

Coastal Flood Statement 4, NWS Wakefield, VA

March 21, 201814 counties in Virginia

NWS Wakefield, VA issued this coastal flood statement at Mar 21, 2018, 10:16 AM EDT for 14 counties in Virginia. It took effect at Mar 21, 2018, 11:00 AM EDT. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued: Mar 21, 2018, 10:16 AM EDT (14:16 UTC)
In effect from: Mar 21, 2018, 11:00 AM EDT
Expired: Mar 22, 2018, 7:00 AM EDT
In force: 20 hr
Issued by: NWS Wakefield, VA

Counties City of Chesapeake, VA, City of Hampton, VA, City of Newport News, VA, City of Poquoson, VA, City of Williamsburg, VA, Gloucester County, VA, James City County, VA, Lancaster County, VA, Mathews County, VA, Middlesex County, VA, Northumberland County, VA, Surry County, VA, Westmoreland County, VA, York County, VA

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 2.3 hours before the alert went out and 263 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: 621 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -119 m²/s²
0-3 km storm-relative helicity: -123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this coastal flood 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 coastal flood statement went out at Mar 21, 7:10 AM EDT, 3 hours 6 minutes earlier.

Area forecast discussion, Mar 21, 7:10 AM EDT, 3 hours 6 minutes before

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Hazardous weather outlook, Mar 21, 5:48 AM EDT, 4 hours 28 minutes before

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In the hours before

Local storm report, Mar 21, 9:35 AM EDT, 41 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
Mar 20, 11:37 PM EDT	Special Weather Statement	AKQ	Brunswick, Lunenburg, Mecklenburg, Nottoway	53 min
Mar 21, 4:12 PM EDT	Coastal Flood Statement	AKQ	City of Virginia Beach	9 hr
Mar 21, 4:12 PM EDT	Coastal Flood Statement	AKQ	James City, Surry, City of Williamsburg	16 hr

Nearby

Coastal Flood Statements in Virginia, 2018 Every coastal flood 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.