Alert archive / Virginia / Coastal Flood Statements in 2011

Coastal Flood Statement 9, NWS Wakefield, VA

September 29, 20118 counties in Virginia; Currituck County, North Carolina; 4 counties in Maryland

NWS Wakefield, VA issued this coastal flood statement at Sep 29, 2011, 4:39 PM EDT for 8 counties in Virginia; Currituck County, North Carolina; 4 counties in Maryland. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: Sep 29, 2011, 4:39 PM EDT (20:39 UTC)
Expired: Sep 30, 2011, 3:29 AM EDT
In force: 11 hr
Issued by: NWS Wakefield, VA

Counties Dorchester County, MD, Somerset County, MD, Wicomico County, MD, Worcester County, MD, Currituck County, NC, Accomack County, VA, City of Virginia Beach, VA, Gloucester County, VA, Lancaster County, VA, Mathews County, VA, Middlesex County, VA, Northampton County, VA, Northumberland County, VA

The radar

The Norfolk radar (KAKQ), 111 km from the middle of the area, began a volume at 20:43 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 8.7 hours before the alert went out and 204 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: 578 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 612 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 95 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 Sep 29, 4:23 PM EDT, 16 minutes earlier.

Area forecast discussion, Sep 29, 4:23 PM EDT, 16 minutes before

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Hazardous weather outlook, Sep 29, 7:04 AM EDT, 9 hours 35 minutes before

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In the hours before

Local storm report, Sep 29, 2:13 PM EDT, 2 hours 26 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
Sep 28, 8:31 PM EDT	Areal Flood Warning	AKQ	City of Virginia Beach	119 min
Sep 29, 3:41 AM EDT	Coastal Flood Advisory	AKQ	Accomack, Northampton	9 hr
Sep 29, 2:22 AM EDT	Special Weather Statement	AKQ	Bertie, Chowan, Hertford, Perquimans	53 min
Sep 29, 4:32 AM EDT	Special Weather Statement	AKQ	Camden, Currituck, Pasquotank, Perquimans	58 min

Nearby

Coastal Flood Statements in Virginia, 2011 Coastal Flood Statements in Maryland, 2011 Coastal Flood Statements in North Carolina, 2011 Every coastal flood 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.