Alert archive / Virginia / Coastal Flood Statements in 2020

Coastal Flood Statement 9, NWS Wakefield, VA

April 8, 202011 counties in Virginia; Worcester County, Maryland

NWS Wakefield, VA issued this coastal flood statement at Apr 8, 2020, 4:30 PM EDT for 11 counties in Virginia; Worcester County, Maryland. It took effect at Apr 8, 2020, 6:00 PM EDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Apr 8, 2020, 4:30 PM EDT (20:30 UTC)
In effect from: Apr 8, 2020, 6:00 PM EDT
Expired: Apr 9, 2020, 2:39 AM EDT
In force: 9 hr
Issued by: NWS Wakefield, VA

Counties Worcester County, MD, City of Hampton, VA, City of Newport News, VA, City of Poquoson, VA, City of Virginia Beach, VA, Gloucester County, VA, Lancaster County, VA, Mathews County, VA, Middlesex County, VA, Northumberland County, VA, Westmoreland County, VA, York County, VA

The radar

The Norfolk radar (KAKQ), 80 km from the middle of the area, began a volume at 20:33 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, 8.5 hours before the alert went out and 281 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: 151 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 989 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: -37 m²/s²
0-3 km storm-relative helicity: -20 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

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 Apr 8, 4:02 PM EDT, 28 minutes earlier.

Area forecast discussion, Apr 8, 4:02 PM EDT, 28 minutes before

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Hazardous weather outlook, Apr 8, 5:21 AM EDT, 11 hours 9 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
Apr 7, 8:07 PM EDT	Special Weather Statement	AKQ	City of Chesapeake	38 min
Apr 7, 8:19 PM EDT	Special Marine Warning	AKQ		56 min
Apr 7, 11:43 PM EDT	Special Marine Warning	AKQ		62 min
Apr 8, 4:34 AM EDT	Small Craft Advisory	AKQ		3 days
Apr 8, 6:23 AM EDT	Special Weather Statement	AKQ	Amelia, Cumberland, Fluvanna, Goochland, Hanover, Louisa and 2 more	37 min
Apr 8, 7:05 AM EDT	Special Weather Statement	AKQ	Amelia, Cumberland, Goochland, Hanover, Nottoway, Powhatan and 2 more	40 min
Apr 8, 4:06 PM EDT	Gale Watch	AKQ		11 hr
Apr 8, 4:06 PM EDT	Small Craft Advisory	AKQ		60 hr
Apr 8, 4:30 PM EDT	Coastal Flood Advisory	AKQ	Accomack, Northampton	11 hr
Apr 7, 11:22 PM EDT	Special Weather Statement	AKQ	Worcester	53 min

Nearby

Coastal Flood Statements in Virginia, 2020 Coastal Flood Statements in Maryland, 2020 Every coastal flood statement in 2020

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.