Alert archive / Delaware / Coastal Flood Statements in 2019

Coastal Flood Statement 13, NWS Philadelphia/Mount Holly

November 18, 2019Sussex County, Delaware; Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this coastal flood statement at Nov 18, 2019, 4:01 PM EST for Sussex County, Delaware; Ocean County, New Jersey. It took effect at Nov 18, 2019, 4:07 PM EST. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Nov 18, 2019, 4:01 PM EST (21:01 UTC)
In effect from
Nov 18, 2019, 4:07 PM EST
Expired
Nov 18, 2019, 10:00 PM EST
In force
6 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Sussex County, DE, Ocean County, NJ

The radar

The Dover AFB radar (KDOX), 75 km from the middle of the area, began a volume at 21:01 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, 9.0 hours before the alert went out and 158 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 2019-11-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 2019-11-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 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
2 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
429 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

974 
WHUS41 KPHI 182101
CFWPHI

Coastal Hazard Message
National Weather Service Mount Holly NJ
401 PM EST Mon Nov 18 2019

NJZ020-026-190300-
/O.NEW.KPHI.CF.S.0013.191118T2101Z-191119T0300Z/
Ocean-Coastal Ocean-
401 PM EST Mon Nov 18 2019

...MINOR FLOODING ALONG NORTHERN BARNEGAT BAY...

* LOCATIONS...Barnegat Bay, to the north of Barnegat Inlet, and 
  its tidal tributaries.

* TIMING...A northeasterly wind has keep water trapped in the 
  northern part of Barnegat Bay this afternoon into this evening. 
  However, now that winds are shifting to offshore, they should 
  allow water to push out of the bay later this evening and 
  overnight.

* COASTAL FLOOD IMPACTS...Up to a half foot of inundation above 
  ground level is possible in low-lying areas near shorelines and 
  tidal waterways. Minor flooding is expected with some road 
  closures possible.

&&

$$

DEZ003-004-190300-
/O.NEW.KPHI.CF.S.0013.191118T2101Z-191119T0300Z/
Inland Sussex-Delaware Beaches-
401 PM EST Mon Nov 18 2019

...MINOR FLOODING ALONG LITTLE ASSAWOMAN BAY...

* LOCATIONS...Assawoman Bay and its tidal tributaries.

* TIMING...A northeasterly wind has keep water trapped in the 
  northern part of Barnegat Bay this afternoon into this evening. 
  However, now that winds are shifting to offshore, they should 
  allow water to push out of the bay later this evening and 
  overnight.

* COASTAL FLOOD IMPACTS...Up to a half foot of inundation above 
  ground level is possible in low-lying areas near shorelines and 
  tidal waterways. Minor flooding is expected with some road 
  closures possible. 

&&

$$

Robertson
1 follow-up statement
900 
WHUS41 KPHI 182107 CCA
CFWPHI

Coastal Hazard Message...CORRECTED
National Weather Service Mount Holly NJ
407 PM EST Mon Nov 18 2019

NJZ020-026-190300-
/O.NEW.KPHI.CF.S.0013.191118T2107Z-191119T0300Z/
Ocean-Coastal Ocean-
407 PM EST Mon Nov 18 2019

...MINOR FLOODING ALONG NORTHERN BARNEGAT BAY...

* LOCATIONS...Barnegat Bay, to the north of Barnegat Inlet, and 
  its tidal tributaries.

* TIMING...A northeasterly wind has keep water trapped in the 
  northern part of Barnegat Bay this afternoon into this evening. 
  However, now that winds are shifting to offshore, they should 
  allow water to push out of the bay later this evening and 
  overnight.

* COASTAL FLOOD IMPACTS...Up to a half foot of inundation above 
  ground level is possible in low-lying areas near shorelines and 
  tidal waterways. Minor flooding is expected with some road 
  closures possible.

&&

$$

DEZ003-004-190300-
/O.COR.KPHI.CF.S.0013.191118T2107Z-191119T0300Z/
Inland Sussex-Delaware Beaches-
407 PM EST Mon Nov 18 2019

...MINOR FLOODING ALONG LITTLE ASSAWOMAN BAY...

* LOCATIONS...Assawoman Bay and its tidal tributaries.

* TIMING...A northeasterly wind has keep water trapped in the Little
  Assawoman Bay this afternoon into this evening. However, now 
  that winds are shifting to offshore, they should allow water to 
  push out of the bay later this evening and overnight.

* COASTAL FLOOD IMPACTS...Up to a half foot of inundation above 
  ground level is possible in low-lying areas near shorelines and 
  tidal waterways. Minor flooding is expected with some road 
  closures possible. 

&&

$$

Robertson

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 17, 11:04 PM ESTSmall Craft AdvisoryPHI37 hr

Nearby

Coastal Flood Statements in Delaware, 2019Coastal Flood Statements in New Jersey, 2019Every coastal flood statement in 2019

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.