Alert archive / New Jersey / Areal Flood Warnings in 2023

Areal Flood Warning 43, NWS Philadelphia/Mount Holly

December 10, 2023Monmouth County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this areal flood warning at Dec 10, 2023, 9:42 PM EST for Monmouth County, Ocean County, New Jersey. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Dec 10, 2023, 9:42 PM EST (02:42 UTC)
Expired: Dec 11, 2023, 1:45 AM EST
In force: 4 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Monmouth County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 23 km from the middle of the area, began a volume at 02:44 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, 2.7 hours before the alert went out and 143 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: 596 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 350 m²/s²
0-3 km storm-relative helicity: 370 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 warning 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 warning went out at Dec 10, 4:06 PM EST, 5 hours 36 minutes earlier.

Area forecast discussion, Dec 10, 4:06 PM EST, 5 hours 36 minutes before

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Hazardous weather outlook, Dec 10, 4:44 PM EST, 4 hours 58 minutes before

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In the hours before

Local storm report, Dec 10, 7:58 PM EST, 1 hour 44 minutes before

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Local storm report, Dec 10, 7:59 PM EST, 1 hour 43 minutes before

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Local storm report, Dec 10, 8:14 PM EST, 1 hour 28 minutes before

Preliminary Local Storm Report
National Weather Service Mount Holly NJ
814 PM EST Sun Dec 10 2023

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

0806 PM     Flood            1 ENE Tinicum Twp       39.88N 75.27W
12/10/2023                   Delaware           PA   Dept of Highways

            Flooding on I-95 S near Philadelphia
            International Airport. There is a lane
            restriction. Time given in report.

&&

Hoeflich

Local storm report, Dec 10, 8:15 PM EST, 1 hour 27 minutes before

Preliminary Local Storm Report
National Weather Service Mount Holly NJ
815 PM EST Sun Dec 10 2023

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

0810 PM     Flood            1 SW King of Prussia    40.08N 75.39W
12/10/2023                   Montgomery         PA   Dept of Highways

            Flooding on I-76 near Route 202 in King of
            Prussia. There is a lane restriction. Time
            given in report.

&&

Hoeflich

Local storm report, Dec 10, 8:43 PM EST, 59 minutes before

Preliminary Local Storm Report
National Weather Service Mount Holly NJ
843 PM EST Sun Dec 10 2023

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

0819 PM     Flood            1 NNE Belmont           39.98N 75.20W
12/10/2023                   Philadelphia       PA   Dept of Highways

            Flooding on I-76 near exit 339. There is a
            lane restriction. Time given in report.

&&

Hoeflich

Local storm report, Dec 10, 9:25 PM EST, 17 minutes before

Preliminary Local Storm Report
National Weather Service Mount Holly NJ
925 PM EST Sun Dec 10 2023

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

0833 PM     Rain             5 SE Trappe             38.60N 76.00W
12/10/2023  M2.92 inch       Talbot             MD   Mesonet

            Mesonet station CW1706 Cambridge.

0900 PM     Rain             Harrington              38.91N 75.58W
12/10/2023  M2.76 inch       Kent               DE   Mesonet

0855 PM     Rain             Greentree               39.90N 74.96W
12/10/2023  M2.55 inch       Camden             NJ   Mesonet

            Mesonet station FW5255 Cherry Hill.

0855 PM     Rain             3 WNW Frederica         39.03N 75.52W
12/10/2023  M2.51 inch       Kent               DE   Mesonet

            Mesonet station EW5390 Felton.

0900 PM     Rain             Seaford                 38.65N 75.70W
12/10/2023  M2.31 inch       Sussex             DE   Mesonet

0900 PM     Rain             Fortescue NJWxNet       39.24N 75.18W
12/10/2023  M2.29 inch       Cumberland         NJ   Mesonet

0900 PM     Rain             Frederica               39.00N 75.44W
12/10/2023  M2.20 inch       Kent               DE   Mesonet

0900 PM     Rain             Kitts Hummock           39.09N 75.44W
12/10/2023  M2.16 inch       Kent               DE   Mesonet

0855 PM     Rain             2 SSE Greenwood         38.78N 75.58W
12/10/2023  M2.14 inch       Sussex             DE   Mesonet

            Mesonet station EW7993 Greenwood.

0845 PM     Rain             1 SSE West Chester      39.95N 75.59W
12/10/2023  M2.08 inch       Chester            PA   Mesonet

            Mesonet station FW9225 West Chester.

0855 PM     Rain             2 ESE Tabernacle        39.83N 74.67W
12/10/2023  M2.07 inch       Burlington         NJ   Mesonet

            Mesonet station CW0992 Tabernacle.

0810 PM     Rain             2 N Winslow Twp         39.68N 74.86W
12/10/2023  M2.04 inch       Camden             NJ   Mesonet

            Mesonet station BLAN4 Blue Ancor.

0857 PM     Rain             1 ESE Ironia            40.82N 74.60W
12/10/2023  M2.03 inch       Morris             NJ   Mesonet

            Mesonet station EW6513 Randolph.

0900 PM     Rain             Hockessin               39.79N 75.70W
12/10/2023  M1.99 inch       New Castle         DE   Mesonet

0857 PM     Rain             1 NNW Oaks              40.14N 75.46W
12/10/2023  M1.96 inch       Montgomery         PA   Mesonet

            Mesonet station GW1992 COLLEGEVILLE.

0900 PM     Rain             Hammonton NJWxNet       39.64N 74.76W
12/10/2023  M1.94 inch       Atlantic           NJ   Mesonet

0855 PM     Rain             1 NW East Norriton      40.16N 75.35W
12/10/2023  M1.92 inch       Montgomery         PA   Mesonet

            Mesonet station EW6703 East Norriton.

0900 PM     Rain             Newark                  39.67N 75.75W
12/10/2023  M1.92 inch       New Castle         DE   Mesonet

0858 PM     Rain             2 SW Glendale           39.61N 75.70W
12/10/2023  M1.90 inch       New Castle         DE   Mesonet

            Mesonet station GW1337 BEAR.

&&

Gorse

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 10, 7:08 PM EST	Areal Flood Advisory	PHI	Gloucester, Salem	4 hr
Dec 10, 7:27 PM EST	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	8 hr
Dec 10, 9:24 PM EST	Areal Flood Warning	PHI	Hunterdon	12 hr
Dec 11, 3:28 AM EST	Areal Flood Warning	PHI	Somerset	11 hr
Dec 11, 4:36 AM EST	Areal Flood Warning	PHI	Somerset	5 hr
Dec 11, 2:33 PM EST	Small Craft Advisory	PHI		40 hr
Dec 10, 11:04 PM EST	Areal Flood Warning	PHI	Chester, Delaware	6 hr
Dec 10, 11:36 PM EST	Areal Flood Warning	PHI	Montgomery	9 hr
Dec 10, 11:42 PM EST	Areal Flood Warning	PHI	Montgomery	4 hr
Dec 11, 12:44 AM EST	Areal Flood Warning	PHI	Bucks	9 hr
Dec 11, 1:19 AM EST	Areal Flood Warning	PHI	Montgomery, Philadelphia	8 hr
Dec 11, 1:34 AM EST	Areal Flood Warning	PHI	Berks	7 hr
Dec 11, 2:43 AM EST	River Flood Warning	PHI	Bucks	10 hr
Dec 11, 3:02 AM EST	River Flood Warning	PHI	Chester	4 hr
Dec 11, 4:26 AM EST	Areal Flood Warning	PHI	Lehigh	6 hr
Dec 10, 10:21 PM EST	River Flood Warning	PHI	New Castle	6 hr

Nearby

Areal Flood Warnings in New Jersey, 2023 Every areal flood warning in 2023

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.