Alert archive / Virginia / Coastal Flood Statements in 2017

Coastal Flood Statement 16, NWS Wakefield, VA

May 11, 201716 counties in Virginia; Dorchester County, Somerset County, Wicomico County, Maryland

NWS Wakefield, VA issued this coastal flood statement at May 11, 2017, 6:04 PM EDT for 16 counties in Virginia; Dorchester County, Somerset County, Wicomico County, Maryland. It took effect at May 12, 2017, 12:00 AM EDT. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued
May 11, 2017, 6:04 PM EDT (22:04 UTC)
In effect from
May 12, 2017, 12:00 AM EDT
Expired
May 12, 2017, 5:54 PM EDT
In force
18 hr
Issued by
NWS Wakefield, VA

Counties Dorchester County, MD, Somerset County, MD, Wicomico County, MD, Accomack County, VA, 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, Northampton County, VA, Northumberland County, VA, Surry County, VA, Westmoreland County, VA, York County, VA

The radar

The Norfolk radar (KAKQ), 83 km from the middle of the area, began a volume at 22:03 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, 10.1 hours before the alert went out and 280 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-pSkew-T log-p diagram, Roanoke, VA at 12:00Z on 2017-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 12:00Z on 2017-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1015 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
176 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 May 11, 5:49 PM EDT, 15 minutes earlier.

Area forecast discussion, May 11, 5:49 PM EDT, 15 minutes before
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Hazardous weather outlook, May 11, 4:24 PM EDT, 1 hour 40 minutes before
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In the hours before

Local storm report, May 11, 1:17 PM EDT, 4 hours 47 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 10, 8:23 PM EDTSpecial Weather StatementAKQPrince Edward37 min
May 10, 8:52 PM EDTSpecial Weather StatementAKQAmelia, Nottoway38 min
May 10, 8:54 PM EDTSpecial Weather StatementAKQLunenburg36 min
May 10, 9:10 PM EDTSevere Thunderstorm WarningAKQLunenburg, Mecklenburg50 min
May 10, 9:22 PM EDTSpecial Weather StatementAKQPrince Edward38 min
May 10, 9:28 PM EDTSpecial Weather StatementAKQDinwiddie47 min
May 10, 9:52 PM EDTSevere Thunderstorm WarningAKQMecklenburg38 min
May 10, 9:58 PM EDTSpecial Weather StatementAKQLunenburg, Prince Edward62 min
May 10, 10:42 PM EDTSevere Thunderstorm WarningAKQLunenburg, Mecklenburg63 min
May 10, 11:40 PM EDTSevere Thunderstorm WarningAKQMecklenburg35 min
May 10, 11:42 PM EDTSpecial Weather StatementAKQCity of Franklin63 min
May 11, 12:03 AM EDTSpecial Weather StatementAKQBrunswick42 min
May 11, 2:00 AM EDTSpecial Weather StatementAKQSurry, City of Hampton, City of Newport News, City of Norfolk, City of Poquoson, City of Portsmouth and 1 more45 min
May 11, 2:57 AM EDTSmall Craft AdvisoryAKQ5 days
May 11, 7:16 AM EDTSpecial Weather StatementAKQEssex, King and Queen, King William29 min
May 11, 7:45 AM EDTSpecial Weather StatementAKQKing and Queen, Middlesex30 min
May 11, 8:18 AM EDTSpecial Weather StatementAKQMathews, Middlesex42 min
May 11, 9:39 AM EDTSpecial Weather StatementAKQNorthampton36 min
May 11, 10:16 AM EDTSpecial Marine WarningAKQ44 min
May 11, 6:34 PM EDTSpecial Weather StatementAKQMecklenburg41 min
May 11, 6:40 PM EDTSevere Thunderstorm WarningAKQMecklenburg50 min

Nearby

Coastal Flood Statements in Virginia, 2017Coastal Flood Statements in Maryland, 2017Every coastal flood statement in 2017

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.