Alert archive / New Jersey / Areal Flood Advisories in 2018

Areal Flood Advisory 358, NWS Philadelphia/Mount Holly

December 28, 20185 counties in New Jersey

NWS Philadelphia/Mount Holly issued this areal flood advisory at Dec 28, 2018, 3:38 PM EST for 5 counties in New Jersey. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Dec 28, 2018, 3:38 PM EST (20:38 UTC)
Expired: Dec 28, 2018, 7:22 PM EST
In force: 4 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 38 km from the middle of the area, began a volume at 20:40 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 12:00Z, 8.6 hours before the alert went out and 147 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 520 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 714 m²/s²
0-3 km storm-relative helicity: 922 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this areal flood advisory went out at Dec 28, 12:32 PM EST, 3 hours 6 minutes earlier.

Area forecast discussion, Dec 28, 12:32 PM EST, 3 hours 6 minutes before

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Hazardous weather outlook, Dec 28, 3:34 PM EST, 4 minutes before

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In the hours before

Local storm report, Dec 28, 10:53 AM EST, 4 hours 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1053 AM EST FRI DEC 28 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1038 AM     FLOOD            2 W NEW VERNON          40.75N 74.53W
12/28/2018                   MORRIS             NJ   DEPT OF HIGHWAYS

            NJ DOT - STMC: FLOODING ON I-287 SOUTHBOUND
            NORTH OF EXIT 30 - NORTH MAPLE AVE (HARDING
            TWP) RIGHT LANE CLOSED.

&&

MPS

Local storm report, Dec 28, 11:16 AM EST, 4 hours 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1116 AM EST FRI DEC 28 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1021 AM     FLOOD            2 WNW TROUT LAKE        40.01N 75.37W
12/28/2018                   DELAWARE           PA   DEPT OF HIGHWAYS

            FLOODING ON GODFREY RD BOTH DIRECTIONS
            BETWEEN DARBY PAOLI RD AND SPROUL RD / +
            GODFREY RD. ALL LANES CLOSED.

&&

MPS

Local storm report, Dec 28, 11:28 AM EST, 4 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1128 AM EST FRI DEC 28 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1111 AM     FLOOD            1 SSW STANTON           39.71N 75.65W
12/28/2018                   NEW CASTLE         DE   DEPT OF HIGHWAYS

            OLD STANTON CHRISTIANA RD IS CLOSED NEAR THE
            RAILROAD TRACKS DUE TO HIGH WATER.

&&

MPS

Local storm report, Dec 28, 11:45 AM EST, 3 hours 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1145 AM EST FRI DEC 28 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1134 AM     FLOOD            1 SSW LOWER SOUTHAMPTON 40.14N 75.00W
12/28/2018                   BUCKS              PA   PUBLIC

            PHILMONT AVE BETWEEN HWY 63/RED LION RD AND
            PINE RD CLOSED DUE TO FLOODING.

&&

JEO

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 28, 11:23 AM EST	Areal Flood Advisory	PHI	Gloucester, Salem	8 hr
Dec 28, 11:39 AM EST	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 1 more	8 hr
Dec 28, 12:12 PM EST	Areal Flood Warning	PHI	Hunterdon, Somerset	4 hr
Dec 28, 3:04 PM EST	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Monmouth and 2 more	4 hr
Dec 28, 4:26 PM EST	Coastal Flood Statement	PHI	Ocean	5 hr

Nearby

Areal Flood Advisories in New Jersey, 2018 Every areal flood advisory in 2018

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.