Alert archive / New Jersey / Coastal Flood Statements in 2020

Coastal Flood Statement 18, NWS Philadelphia/Mount Holly

September 30, 2020Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this coastal flood statement at Sep 30, 2020, 12:14 AM EDT for Ocean County, New Jersey. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Sep 30, 2020, 12:14 AM EDT (04:14 UTC)
Expired
Sep 30, 2020, 5:00 AM EDT
In force
5 hr
Issued by
NWS Philadelphia/Mount Holly

County Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 16 km from the middle of the area, began a volume at 04:14 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

Brookhaven, NY (KOKX), launched 00:00Z, 4.2 hours before the alert went out and 162 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, Brookhaven, NY at 00:00Z on 2020-09-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 410 joules per kilogram.LCLLFCEL10008507005003002001001 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, Brookhaven, NY at 00:00Z on 2020-09-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 149 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
410 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
665 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
149 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.4

Open this sounding in Storm Lab

The text

As transmitted.

605 
WHUS41 KPHI 300414
CFWPHI

Coastal Hazard Message
National Weather Service Mount Holly NJ
1214 AM EDT Wed Sep 30 2020

NJZ020-026-300900-
/O.NEW.KPHI.CF.S.0018.200930T0414Z-200930T0900Z/
Ocean-Coastal Ocean-
1214 AM EDT Wed Sep 30 2020

...MINOR FLOODING ALONG BARNEGAT BAY OVERNIGHT...

* WHAT...Up to one half foot of inundation above ground level in 
  low-lying areas near shorelines and tidal waterways.

* WHERE...Barnegat Bay and the tidal waterways that flow into it.

* WHEN...Until 5:00 AM.

* IMPACTS...Minor roadway flooding is possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive on flooded roadways.

$$

Iovino

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 29, 9:24 PM EDTAreal Flood AdvisoryPHIWarren4 hr
Sep 30, 12:52 AM EDTSpecial Marine WarningPHI113 min
Sep 30, 12:58 AM EDTSpecial Weather StatementPHIAtlantic, Cape May, Cumberland62 min
Sep 30, 1:46 AM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Ocean and 1 more3 hr
Sep 30, 1:52 AM EDTSpecial Marine WarningPHI2 hr
Sep 30, 1:56 AM EDTSpecial Weather StatementPHIAtlantic, Burlington, Cape May, Mercer, Middlesex, Monmouth and 2 more64 min
Sep 30, 2:29 AM EDTAreal Flood WarningPHICumberland, Salem15 hr
Sep 30, 2:37 AM EDTAreal Flood AdvisoryPHIBurlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 2 more4 hr

Nearby

Coastal Flood Statements in New Jersey, 2020Every coastal flood statement in 2020

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.