Alert archive / Virginia / Coastal Flood Statements in 2011

Coastal Flood Statement 4, NWS Wakefield, VA

May 16, 20114 counties in Virginia; Currituck County, North Carolina; Worcester County, Maryland

NWS Wakefield, VA issued this coastal flood statement at May 16, 2011, 3:29 PM EDT for 4 counties in Virginia; Currituck County, North Carolina; Worcester County, Maryland. It took effect at May 16, 2011, 4:00 PM EDT. It was in force for 32 hr.

The area

The counties it named.

The facts

Issued
May 16, 2011, 3:29 PM EDT (19:29 UTC)
In effect from
May 16, 2011, 4:00 PM EDT
Expired
May 18, 2011, 12:05 AM EDT
In force
32 hr
Issued by
NWS Wakefield, VA

Counties Worcester County, MD, Currituck County, NC, City of Chesapeake, VA, City of Virginia Beach, VA, Gloucester County, VA, Northampton County, VA

The radar

The Norfolk radar (KAKQ), 91 km from the middle of the area, began a volume at 19:31 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 12:00Z, 7.5 hours before the alert went out and 105 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, Wallops Is Stn, VA at 12:00Z on 2011-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 31 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, Wallops Is Stn, VA at 12:00Z on 2011-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 square meters per square second.1939587897Sfc1 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
31 J/kg
Mixed-layer CIN
-107 J/kg
Mixed-layer LCL
1080 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
103 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 9:25 PM EDTSpecial Weather StatementAKQPrince George50 min
May 15, 10:32 PM EDTSpecial Weather StatementAKQGloucester, Isle of Wight, James City, Surry, City of Newport News, City of Williamsburg28 min
May 15, 11:03 PM EDTSpecial Weather StatementAKQGloucester, Lancaster, Mathews, Middlesex, Northumberland42 min
May 16, 4:02 AM EDTSmall Craft AdvisoryAKQ4 days
May 16, 4:50 PM EDTSpecial Weather StatementAKQCumberland, Prince Edward55 min
May 16, 5:12 PM EDTSpecial Weather StatementAKQCumberland, Goochland, Powhatan63 min
May 16, 5:44 PM EDTSpecial Weather StatementAKQLouisa61 min
May 15, 8:35 PM EDTSpecial Weather StatementAKQBertie40 min
May 16, 12:37 AM EDTSpecial Weather StatementAKQDorchester, Somerset, Wicomico53 min

Nearby

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