Alert archive / North Carolina / Areal Flood Advisories in 2017

Areal Flood Advisory 21, NWS Wakefield, VA

July 8, 2017Camden County, Currituck County, Pasquotank County, North Carolina

NWS Wakefield, VA issued this areal flood advisory at Jul 8, 2017, 10:02 PM EDT for Camden County, Currituck County, Pasquotank County, North Carolina. It was in force for 118 min.

The area

The counties it named.

The facts

Issued
Jul 8, 2017, 10:02 PM EDT (02:02 UTC)
Expired
Jul 9, 2017, 12:00 AM EDT
In force
118 min
Issued by
NWS Wakefield, VA
Area
Storm-based polygon

Counties Camden County, NC, Currituck County, NC, Pasquotank County, NC

The radar

The Norfolk radar (KAKQ), 108 km from the middle of the area, began a volume at 02:02 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

Newport, NC (KMHX), launched 00:00Z, 2.0 hours before the alert went out and 185 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, Newport, NC at 00:00Z on 2017-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1919 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, Newport, NC at 00:00Z on 2017-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 square meters per square second.193958Sfc1 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
1919 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
1178 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.7

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 8:53 PM EDTSpecial Marine WarningAKQ52 min
Jul 8, 9:48 PM EDTSpecial Marine WarningAKQ72 min
Jul 8, 10:06 PM EDTSpecial Marine WarningAKQ54 min
Jul 8, 10:35 PM EDTSpecial Marine WarningAKQ70 min
Jul 8, 10:35 PM EDTSpecial Weather StatementAKQCity of Virginia Beach10 min
Jul 8, 8:28 PM EDTSpecial Weather StatementAKQGates, Hertford47 min
Jul 8, 8:56 PM EDTSpecial Weather StatementAKQCamden, Pasquotank49 min
Jul 8, 9:06 PM EDTSpecial Weather StatementAKQPerquimans39 min
Jul 8, 10:29 PM EDTSpecial Weather StatementAKQPerquimans46 min
Jul 8, 10:43 PM EDTSpecial Weather StatementAKQCurrituck32 min
Jul 8, 11:25 PM EDTSpecial Weather StatementAKQCurrituck, Pasquotank, Perquimans50 min

Nearby

Areal Flood Advisories in North Carolina, 2017Every areal flood advisory 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.