Alert archive / Virginia / Coastal Flood Statements in 2017

Coastal Flood Statement 44, NWS Wakefield, VA

October 24, 2017Lancaster County, Northumberland County, Westmoreland County, Virginia

NWS Wakefield, VA issued this coastal flood statement at Oct 24, 2017, 3:37 PM EDT for Lancaster County, Northumberland County, Westmoreland County, Virginia. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Oct 24, 2017, 3:37 PM EDT (19:37 UTC)
Expired
Oct 24, 2017, 7:00 PM EDT
In force
3 hr
Issued by
NWS Wakefield, VA

Counties Lancaster County, VA, Northumberland County, VA, Westmoreland County, VA

The radar

The Norfolk radar (KAKQ), 109 km from the middle of the area, began a volume at 19:41 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, 7.6 hours before the alert went out and 102 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 2017-10-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 520 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 2017-10-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 179 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
520 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
709 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
179 m²/s²
0-3 km storm-relative helicity
227 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.0

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 Oct 24, 2:23 PM EDT, 1 hour 14 minutes earlier.

Area forecast discussion, Oct 24, 2:23 PM EDT, 1 hour 14 minutes before
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Hazardous weather outlook, Oct 24, 3:20 PM EDT, 17 minutes before
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In the hours before

Local storm report, Oct 24, 12:17 PM EDT, 3 hours 20 minutes before
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Local storm report, Oct 24, 2:13 PM EDT, 1 hour 24 minutes before
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Local storm report, Oct 24, 2:41 PM EDT, 56 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 23, 10:54 PM EDTSpecial Weather StatementAKQFluvanna, Louisa51 min
Oct 23, 11:23 PM EDTSpecial Weather StatementAKQGoochland, Louisa52 min
Oct 23, 11:48 PM EDTSpecial Weather StatementAKQBrunswick42 min
Oct 24, 12:29 AM EDTSpecial Weather StatementAKQBrunswick, Greensville, City of Emporia46 min
Oct 24, 1:25 AM EDTSpecial Weather StatementAKQChesterfield, Hanover, City of Colonial Heights, City of Richmond50 min
Oct 24, 1:28 AM EDTSpecial Weather StatementAKQPrince George, Southampton, Sussex, City of Franklin47 min
Oct 24, 2:44 AM EDTSpecial Weather StatementAKQKing and Queen, King William, New Kent46 min
Oct 24, 3:25 PM EDTSmall Craft AdvisoryAKQ19 hr
Oct 23, 10:17 PM EDTCoastal Flood StatementAKQDorchester, Somerset, Wicomico11 hr
Oct 24, 8:58 AM EDTCoastal Flood AdvisoryAKQDorchester, Somerset, Wicomico12 hr

Nearby

Coastal Flood Statements in Virginia, 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.