Alert archive / Maryland / Coastal Flood Statements in 2017

Coastal Flood Statement 45, NWS Wakefield, VA

October 29, 2017Dorchester County, Somerset County, Wicomico County, Maryland

NWS Wakefield, VA issued this coastal flood statement at Oct 29, 2017, 7:07 PM EDT for Dorchester County, Somerset County, Wicomico County, Maryland. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Oct 29, 2017, 7:07 PM EDT (23:07 UTC)
Expired
Oct 29, 2017, 10:17 PM EDT
In force
3 hr
Issued by
NWS Wakefield, VA

Counties Dorchester County, MD, Somerset County, MD, Wicomico County, MD

The radar

The Dover AFB radar (KDOX), 70 km from the middle of the area, began a volume at 23:09 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 11.1 hours before the alert went out and 153 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, Washington/Dulle, VA at 12:00Z on 2017-10-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Washington/Dulle, VA at 12:00Z on 2017-10-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 240 square meters per square second.1939587897117136156Sfc1 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
711 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
240 m²/s²
0-3 km storm-relative helicity
283 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
Oct 29, 7:58 AM EDTSpecial Marine WarningAKQ92 min
Oct 29, 8:43 AM EDTSpecial Marine WarningAKQ62 min
Oct 29, 9:29 AM EDTSpecial Marine WarningAKQ61 min
Oct 29, 4:53 PM EDTSpecial Weather StatementAKQAmelia, Brunswick, Chesterfield, Dinwiddie, Goochland, Greensville and 5 more67 min
Oct 29, 7:01 PM EDTSpecial Weather StatementAKQSouthampton, City of Franklin74 min
Oct 29, 7:09 PM EDTSpecial Weather StatementAKQCharles City, Isle of Wight, King and Queen, King William, New Kent, Prince George and 5 more81 min
Oct 29, 7:56 PM EDTSpecial Weather StatementAKQIsle of Wight, City of Chesapeake, City of Franklin, City of Newport News, City of Portsmouth, City of Suffolk79 min

Nearby

Coastal 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.