Alert archive / New Jersey / Areal Flood Warnings in 2023

Areal Flood Warning 26, NWS Philadelphia/Mount Holly

July 9, 2023Hunterdon County, Warren County, New Jersey; Bucks County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this areal flood warning at Jul 9, 2023, 8:55 PM EDT for Hunterdon County, Warren County, New Jersey; Bucks County, Northampton County, Pennsylvania. It was in force for 6 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
Jul 9, 2023, 8:55 PM EDT (00:55 UTC)
Expired
Jul 10, 2023, 3:00 AM EDT
In force
6 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Hunterdon County, NJ, Warren County, NJ, Bucks County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 95 km from the middle of the area, began a volume at 00:56 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, 0.9 hours before the alert went out and 189 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 2023-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 325 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, Brookhaven, NY at 00:00Z on 2023-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 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
325 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
589 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

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 Jul 9, 5:48 PM EDT, 3 hours 7 minutes earlier.

Area forecast discussion, Jul 9, 5:48 PM EDT, 3 hours 7 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
548 PM EDT Sun Jul 9 2023

.SYNOPSIS...
Low pressure was located in the Chesapeake Bay region this
afternoon. The low will drift northeastward, passing through our
region tonight. The system is forecast to lift slowly through
New England on Monday and Tuesday. High pressure is expected to
follow from the west and southwest for the mid week period.
Another frontal boundary may approach from the northwest late in
the week and over the weekend.

&&

.NEAR TERM /THROUGH MONDAY/...
We have reconfigured the Severe Thunderstorm Watch based on the
latest radar trends. It remains in effect until 8:00 PM for
much of southeastern Pennsylvania, much of central and southern
New Jersey, and Delaware. We have dropped the watch from the
northern and western edge of our forecast area, including our
counties in eastern Maryland.

A negative tilt mid level trough will lift northeastward over
our region this evening. A weak surface low is expected to
follow during the night. The robust lift with and ahead of the
short wave trough will continue to enhance the convection in our
region into this evening. Heavy rain and the threat for
localized damaging wind gusts will continue through that time.
The Flood Watch remains in effect.

As the mid level trough begins to move away to our northeast
overnight, the showers and thunderstorms should taper to
scattered light showers. Lingering low clouds are likely.
Tonight's lows should favor the upper 60s and lower 70s with a
variable wind less than 10 MPH.

Another mid level trough is anticipated to pass eastward over
our region on Monday and Monday night. It should trigger a round
of scattered showers and thunderstorms for Monday, mainly in
the afternoon and evening. The activity should not be nearly as
widespread as today. Also, precipitable waters values are
forecast to drop below 2 inches, so the threat of localized
flooding will be greatly reduced. We are expecting a northwest
wind around 10 MPH on Monday with highs generally ranging from
the upper 70s to the middle 80s.

&&

.SHORT TERM /MONDAY NIGHT THROUGH WEDNESDAY/...
A strong mid level low is forecast to meander over lower Hudson
Bay in Canada and vicinity on Tuesday and Wednesday. We will
likely remain on the edge of its influence.

A continued westerly flow on Tuesday should continue to reduce
humidity levels somewhat. The trend is forecast to persist into
Wednesday. Both days are expected to be precipitation-free as
the surface low moves farther away from us and as high pressure
builds across our region.

Tuesday's maximum temperatures should be in the middle and
upper 80s with dew point readings dropping into the 60s. The air
mass will likely modify a bit for Wednesday, with afternoon
temperatures rising into the upper 80s and lower 90s at that
time.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...
The mid level low is expected to remain over northern Ontario,
northeastern Manitoba and adjacent Hudson Bay from Wednesday
night through Friday and it may begin to drop southward over the
weekend. We should remain on the periphery of its influence
through the period.

Surface high pressure is forecast to move out to sea late in
the week. Humidity should be on the increase again late in the
week in the southerly flow on the back side of the high. Some
short wave energy traveling in the mid level flow along with
increasing instability could begin to trigger some mainly
afternoon and evening showers and thunderstorms each day from
Thursday through Sunday.

Temperatures will likely remain seasonable through the period.

&&

.AVIATION /22Z SUNDAY THROUGH FRIDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

Into this evening...Variable conditions with showers and
thunderstorms. The thunderstorms will be accompanied by MVFR/IFR
conditions and may bring locally strong wind gusts. Wind
generally southeast 5 to 10 MPH. Medium confidence.

Overnight...MVFR/IFR conditions with lingering showers.
Variable wind less than 10 knots. Medium confidence.

Monday...Mainly VFR. Scattered showers and thunderstorms could
briefly lower conditions to MVFR or IFR. Northwest wind 5 to 10
knots. Medium confidence.

Outlook...

Tuesday...Mainly VFR. Some early morning ceiling and visibility
restrictions are possible. Northwest to west wind around 10
knots. Medium to high confidence.

Wednesday...Mainly VFR. Some early morning ceiling and
visibility restrictions are possible. Southwest to south wind
around 10 knots. Medium to high confidence.

Thursday...Mainly VFR. Some early morning ceiling and
visibility restrictions are possible. A chance of afternoon and
evening showers and thunderstorms. Southwest to south wind 10 to
15 knots. Medium confidence.

Friday...Mainly VFR. Some early morning ceiling and visibility
restrictions are possible. A chance of afternoon and evening
showers and thunderstorms. West to southwest wind around 10
knots. Medium confidence.

&&

.MARINE...
Showers and strong thunderstorms are expected into this
evening. Southeast wind around 10 knots, becoming southwest
overnight, then westerly on Monday. Wave heights on our ocean
waters should be 2 to 3 feet, with waves on Delaware Bay at 2
feet or less.

Outlook...

Tuesday through Friday...No marine headlines are anticipated.

Rip currents...

There is a LOW risk for the development of dangerous rip
currents for the New Jersey and Delaware beaches through Monday.
A southeasterly wind around 10 MPH is expected into this
evening. Waves in the surf zone will remain around 2 feet.
Similar surf conditions are forecast for Monday, with a westerly
wind 5 to 10 MPH. A sea breeze may develop on Monday afternoon.
A medium period southeasterly swell is expected to continue
through this time.

&&

.HYDROLOGY...
There continues to be a significant threat for heavy rain this
afternoon and evening. Forecast rain amounts range from 0.75 to
2.25 inches across the region, but locally higher amounts are
likely. At this point, eastern Pennsylvania and northern New
Jersey remain the favored areas for the higher rainfall amounts.
The initial concern will be flash flooding, especially in areas
of poor drainage, including urban areas. Additionally, flooding
is possible on smaller creeks and streams.

Depending on where the band of highest rain amounts settles,
there is some potential for main stem river flooding with this
event. However, there is considerable uncertainty in where the
heaviest rain amounts will be and thus the ultimate impacts for
the main stem rivers.

&&

.CLIMATE...
Widespread heavy rainfall is expected across our forecast area
today. Below is a list of the daily precipitation records.

July 9th Daily Precipitation Records

Allentown (ABE)       4.15" in 1952
AC Airport (ACY)      2.92" in 2021
AC Marina (55N)       2.08" in 2021
Georgetown (GED)      1.87" in 2021
Mount Pocono (MPO)    5.40" in 1952
Philadelphia (PHL)    1.79" in 1952
Reading (RDG)         3.74" in 1952
Trenton (TTN)         2.10" in 1952
Wilmington (ILG)      5.18" in 1952

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Flood Watch until midnight EDT tonight for PAZ054-055-060>062-
     070-071-101>106.
NJ...Flood Watch until midnight EDT tonight for NJZ016>027.
     Flood Watch through late tonight for NJZ001-007>010-012>015.
DE...Flood Watch until midnight EDT tonight for DEZ001>004.
MD...Flood Watch until midnight EDT tonight for MDZ012-015-019-020.
MARINE...None.

&&

SYNOPSIS...Iovino
NEAR TERM...Iovino
SHORT TERM...Iovino
LONG TERM...Iovino
AVIATION...Iovino
MARINE...Iovino
HYDROLOGY...Johnson
CLIMATE...Staarmann
Hazardous weather outlook, Jul 9, 4:20 PM EDT, 4 hours 35 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
0420 PM EDT Sun Jul 09 2023

DEZ001-102020-
New Castle-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for New Castle County in Delaware.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ002-102020-
Kent-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Kent County in Delaware.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ003-102020-
Inland Sussex-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for inland portions of Sussex County
in Delaware.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ004-102020-
Delaware Beaches-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for the Atlantic coastal portions of
Sussex County in Delaware.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ054-102020-
Carbon-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Carbon County in Pennsylvania.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ055-102020-
Monroe-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Monroe County in Pennsylvania.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ060-102020-
Berks-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Berks County in Pennsylvania.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ061-102020-
Lehigh-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Lehigh County in Pennsylvania.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ062-102020-
Northampton-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Northampton County in
Pennsylvania.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ070-102020-
Delaware-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Delaware County in Pennsylvania.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ071-102020-
Philadelphia-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Philadelphia County in
Pennsylvania.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ101-102020-
Western Chester-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for western Chester County in
Pennsylvania.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ102-102020-
Eastern Chester-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for eastern Chester County in
Pennsylvania.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ103-102020-
Western Montgomery-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for western Montgomery County in
Pennsylvania.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ104-102020-
Eastern Montgomery-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for eastern Montgomery County in
Pennsylvania.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ105-102020-
Upper Bucks-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for upper Bucks County in
Pennsylvania.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ106-102020-
Lower Bucks-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for lower Bucks County in
Pennsylvania.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ001-102020-
Sussex-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Sussex County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ007-102020-
Warren-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Warren County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ008-102020-
Morris-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Morris County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ009-102020-
Hunterdon-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Hunterdon County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ010-102020-
Somerset-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Somerset County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ012-102020-
Middlesex-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Middlesex County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ013-102020-
Western Monmouth-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for western Monmouth County in New
Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ014-102020-
Eastern Monmouth-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for eastern Monmouth County in New
Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ015-102020-
Mercer-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Mercer County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ016-102020-
Salem-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Salem County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ017-102020-
Gloucester-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Gloucester County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ018-102020-
Camden-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Camden County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ019-102020-
Northwestern Burlington-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for northwestern Burlington County in
New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ020-102020-
Ocean-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for inland portions of Ocean County
in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ021-102020-
Cumberland-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Cumberland County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ022-102020-
Atlantic-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for inland portions of Atlantic
County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ023-102020-
Cape May-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Cape May County excluding the
Atlantic coast in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ024-102020-
Atlantic Coastal Cape May-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for the Atlantic coastal portions of
Cape May County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ025-102020-
Coastal Atlantic-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for coastal portions of Atlantic
County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ026-102020-
Coastal Ocean-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for coastal portions of Ocean County
in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ027-102020-
Southeastern Burlington-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for southeastern Burlington County in
New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

MDZ012-102020-
Kent MD-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Kent County in Maryland.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

MDZ015-102020-
Queen Annes-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Queen Annes County in Maryland.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

MDZ019-102020-
Talbot-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Talbot County in Maryland.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

MDZ020-102020-
Caroline-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for Caroline County in Maryland.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ430-102020-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for upper Delaware Bay.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ431-102020-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for lower Delaware Bay.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ450-102020-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Monmouth County out 20 nm.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ451-102020-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Ocean County out 20 nm.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ452-102020-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Atlantic County out 20 nm.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ453-102020-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Cape May County out 20 nm.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ454-102020-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to the mouth of Delaware Bay out 20 nm.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ455-102020-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
0420 PM EDT Sun Jul 09 2023

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Sussex County out 20 nm.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

In the hours before

Local storm report, Jul 9, 8:24 PM EDT, 31 minutes before
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Local storm report, Jul 9, 8:27 PM EDT, 28 minutes before
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Local storm report, Jul 9, 8:31 PM EDT, 24 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
831 PM EDT Sun Jul 9 2023

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

0654 PM     Flash Flood      1 ESE Franklin Twp      40.60N 74.90W
07/09/2023                   Hunterdon          NJ   Law Enforcement

            Clinton Township Police have posted pictures
            of the Raritan River flooding the Camp Carr
            campgrounds. Police on scene.

&&

DeSilva
Local storm report, Jul 9, 8:35 PM EDT, 20 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
835 PM EDT Sun Jul 9 2023

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

0526 PM     Flash Flood      1 SW Maiden Creek       40.44N 75.91W
07/09/2023                   Berks              PA   Storm Chaser

            Delayed report... storm chaser reports water
            overrunning roadway on Dries Rd with one
            vehicle in the water.

&&

DeSilva
Local storm report, Jul 9, 8:36 PM EDT, 19 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
836 PM EDT Sun Jul 9 2023

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

0815 PM     Flash Flood      3 NE Ringoes            40.47N 74.83W
07/09/2023                   Hunterdon          NJ   Other Federal

            The Neshanic River at Reaville reached minor
            flood stage.

&&

Staarmann
Local storm report, Jul 9, 8:43 PM EDT, 12 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
843 PM EDT Sun Jul 9 2023

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

0716 PM     Flash Flood      Fleetwood               40.45N 75.83W
07/09/2023                   Berks              PA   Storm Chaser

            Delayed report... storm chaser shows video
            in Fleetwood Park of road washed away in
            Fleetwood.

&&

DeSilva

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 8:20 PM EDTAreal Flood WarningPHIHunterdon, Morris, Somerset, Warren9 hr
Jul 9, 8:38 PM EDTSpecial Marine WarningPHI67 min
Jul 9, 9:00 PM EDTAreal Flood WarningPHIMorris, Somerset, Sussex, Warren11 hr
Jul 9, 10:01 PM EDTAreal Flood WarningPHIHunterdon4 hr
Jul 9, 10:01 PM EDTRiver Flood WarningPHIBergen, Morris, Passaic31 hr
Jul 9, 10:28 PM EDTAreal Flood WarningPHISomerset6 hr
Jul 10, 12:35 AM EDTAreal Flood WarningPHISomerset4 hr
Jul 10, 2:10 AM EDTRiver Flood WarningPHISomerset6 hr
Jul 10, 8:35 AM EDTAreal Flood WarningPHISomerset3 hr
Jul 9, 8:32 PM EDTAreal Flood WarningPHIMontgomery4 hr
Jul 9, 9:33 PM EDTAreal Flood WarningPHIBerks6 hr
Jul 9, 9:50 PM EDTRiver Flood WarningPHIMontgomery22 hr
Jul 9, 9:50 PM EDTRiver Flood WarningPHIChester, Montgomery, Philadelphia12 hr
Jul 9, 9:50 PM EDTRiver Flood WarningPHIMontgomery, Philadelphia12 hr
Jul 9, 9:53 PM EDTRiver Flood WarningPHIChester, Delaware17 hr
Jul 9, 11:35 PM EDTAreal Flood WarningPHIPhiladelphia4 hr
Jul 10, 6:27 PM EDTSpecial Weather StatementPHILehigh33 min
Jul 10, 6:38 PM EDTSpecial Weather StatementPHICarbon22 min
Jul 10, 6:57 PM EDTSpecial Weather StatementPHIBucks33 min
Jul 10, 7:00 PM EDTSpecial Weather StatementPHICarbon30 min
Jul 10, 7:10 PM EDTSevere Thunderstorm WarningPHIBucks50 min
Jul 10, 7:48 PM EDTSpecial Weather StatementPHIMontgomery27 min

Nearby

Areal Flood Warnings in New Jersey, 2023Areal Flood Warnings in Pennsylvania, 2023Every 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.