Alert archive / Virginia / Coastal Flood Warnings in 2021

Coastal Flood Warning 2, NWS Wakefield, VA

May 29, 20214 counties in Virginia

NWS Wakefield, VA issued this coastal flood warning at May 29, 2021, 11:49 PM EDT for 4 counties in Virginia. It took effect at May 30, 2021, 1:00 AM EDT. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 29, 2021, 11:49 PM EDT (03:49 UTC)
In effect from: May 30, 2021, 1:00 AM EDT
Expired: May 30, 2021, 6:59 AM EDT
In force: 6 hr
Issued by: NWS Wakefield, VA

Counties City of Newport News, VA, City of Williamsburg, VA, James City County, VA, Surry County, VA

The radar

The Norfolk radar (KAKQ), 34 km from the middle of the area, began a volume at 03:50 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, 3.8 hours before the alert went out and 142 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 546 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 181 m²/s²
0-3 km storm-relative helicity: 263 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 warning 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 warning went out at May 29, 8:50 PM EDT, 2 hours 59 minutes earlier.

Area forecast discussion, May 29, 8:50 PM EDT, 2 hours 59 minutes before

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Hazardous weather outlook, May 29, 7:39 PM EDT, 4 hours 10 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Wakefield, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 30, 4:01 AM EDT	Small Craft Advisory	AKQ		14 hr
May 30, 4:17 AM EDT	Coastal Flood Advisory	AKQ	Accomack, Gloucester, James City, Mathews, Northampton, Surry and 7 more	11 hr
May 30, 4:17 AM EDT	High Surf Advisory	AKQ	Worcester	6 hr

Nearby

Coastal Flood Warnings in Virginia, 2021 Every coastal flood warning in 2021

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.