Widespread showers and thunderstorms brought heavy rain to northern and central New Jersey on the afternoon and evening of July 9. Rainfall totals were as high as 3 to around 5 inches.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PHI wrote it up.
Widespread showers and thunderstorms brought heavy rain to northern and central New Jersey on the afternoon and evening of July 9. Rainfall totals were as high as 3 to around 5 inches.
The local office's own words before the first event, 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 the first event at Jul 9, 12:40 PM EST, 1 hour 35 minutes earlier.
Area Forecast Discussion
National Weather Service Mount Holly NJ
140 PM EDT Sun Jul 9 2023
.SYNOPSIS...
A broad area of low pressure approaching from the west and
southwest will influence our weather this afternoon into tonight
bringing the potential for heavy rain/flash flooding and severe
weather to the region. An associated weak cold front will cross
our region early on Monday. The low is anticipated to drift
away to our east on Monday and Monday night with high pressure
following for the mid week period. Another front may approach
from the west late in the week.
&&
.NEAR TERM /THROUGH TONIGHT/...
All of our counties, except Monmouth and Ocean in New Jersey,
are under a Severe Thunderstorm Watch into this evening.
Showers and thunderstorms developed quickly late this morning
along and to the northwest of the fall line in northern
Delaware, southeastern Pennsylvania and northern New Jersey.
Additional convective activity was approaching our region from
the west and southwest.
A sharp short wave will lift northeast, it will result in
surface cyclogensis on the remnant stalled front over eastern
PA. This will be the focus for storm development this afternoon.
Timing: The prime time period for storms today looks to be from
mid day through late evening (and may continue well after
midnight for portions of northern NJ). This is due to two
factors, first, due to the abundant moisture and cloud cover,
the low levels will be slower to warm, so it will take longer to
reach the convective temp. That being said, there remains
some disagreement in the timing between the convective allowing
models.
Heavy Rain/Flash flooding: There are a lot of factors
increasing our concern with the heavy rain threat. For much of
the region, models depict precipitable water values around 2
inches which is above the 90th percentile for this time of year.
Additionally, the warm cloud layer should be between 10K and
14K ft through much of this period (meaning storms will be far
more efficient with heavy rain rates). While storm motions will
be slightly faster than what we've seen the last few days
(generally 10 to 20 mph), but depending on how quickly the low
lifts northeast, there is the potential for training storms as
the mean cloud layer flow is expected to be parallel to the
front for much of the period. Given the increasing concern for
flash flood, the flood watch includes all of our counties.
Severe Hazards: Bulk shear values are forecast to be 20 to 25
kt despite relatively weak flow in the low levels. As mentioned
by the previous shift, CAPE values around 1000 J/kg are
possible, despite lower lapse rates. Model soundings depict a
mostly skinny CAPE profile for much of the day. With all of this
taken into account, the primary severe hazard for this
afternoon is damaging winds with a potential for moisture loaded
downbursts and robust cold pools. The skinny CAPE profile and
high melting layer decrease the risk for large hail. While the
shear values are higher than we've seen lately, and there could
be localized low level directional shear in the vicinity of any
cold pools or the front itself, the relatively weak low level
flow limits the tornado risk.
The surface low is expected to be northeast of our region into
southern NY by late this evening. With this, we should see the
coverage of showers and storms decrease, especially for
Delmarva, South Jersey, and SE PA. Portions of north Jersey
(where the surface low will still be relatively close to) could
see lingering showers and storms (though rainfall intensity
should diminish) for much of the night. It will be humid with
lows ranging from the mid 60s to near 70 degrees. Low clouds may
linger across most of the region, which cloud limit the fog
potential. However, even with low stratus, fog may still be
possible, especially with any areas there there remains standing
water.
&&
.SHORT TERM /MONDAY THROUGH TUESDAY/...
Few changes to the short term forecast. A robust mid level low
is forecast to meander over northern Ontario and vicinity on
Monday and Tuesday with a trough deepening over the Great Lakes.
A couple of short waves on the periphery of the cyclonic flow
are expected to affect the Middle Atlantic states and the
Northeast from Monday into Tuesday. The models are having some
difficulty in resolving the short wave energy. However, trends
continue to indicate that it will be nudged off the coast and
out to sea on Tuesday.
We are anticipating lingering clouds and a chance of showers
and thunderstorms on Monday. However, a developing west to
northwest flow should help to begin reducing the humidity a bit.
Monday's highs are expected to favor the lower and middle 80s
due to the cloud cover and scattered precipitation. The lowering
trend in humidity should continue into Monday night and
Tuesday. With decreasing cloud cover as well, radiational
cooling should be more efficient and lows on Monday night are
forecast to be mostly in the 60s as a result.
For Tuesday, it still appears as though the day will be
precipitation-free as the surface low moves farther out to sea
and as high pressure begins to build into our region from the
west. Tuesday's maximum temperatures are expected to be warmer
than Monday's as skies continue to clear. Current forecast highs
should be in the middle and upper 80s with dew point readings
dropping into the 60s.
&&
.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
The long term forecast remains largely unchanged as well. The
mid level low is expected to remain over northern Ontario,
northeastern Manitoba and adjacent Hudson Bay from Tuesday night
through Saturday. We should remain on the edge of its influence
through the period.
Surface high pressure is forecast to extend along the central
and southern Appalachians on Tuesday night. The high is
anticipated to slide off the coast on Wednesday, but not before
bringing us a mostly sunny and hot day. Current forecast high
temperatures for Wednesday are in the upper 80s to low 90s for
most everywhere outside of the Southern Poconos where low 80s
are currently forecast.
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 combined with the aforementioned moisture return
would provide the ingredients for some mainly afternoon and
evening showers and thunderstorms on Thursday, Friday and
Saturday. A developing surface low and front may provide a
trigger for these showers and storms to occur though much
uncertainty remains in the timing and strength of the developing
low.
Temperatures will likely remain seasonable for the period from
Thursday through Saturday.
&&
.AVIATION /18Z SUNDAY THROUGH FRIDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.
This afternoon...MVFR/IFR conditions redevelop as a line of
slow moving heavy showers and thunderstorms pushes through the
area between about 18-02z. Times of very heavy afternoon rain
will significantly reduce the local visibilities at times. Low
confidence on the timing of restrictions in thunderstorms from
18z and later.
Tonight...The bulk of the showers and storms should clear the
TAF sites by 03Z, except at KTTN and KABE where it could linger
through 06Z. However, even once showers and storms clear, low
ceilings may linger through much, if not all of the rest of the
night. Variable winds around 5 knots becoming northwest. Low
confidence.
Outlook...
Monday...Mainly VFR. Scattered showers and thunderstorms could
briefly lower conditions to MVFR or IFR. Northwest wind 5 to 10
knots. Medium confidence.
Tuesday...Mainly VFR. Some early morning visibility
restrictions due to fog are possible. Northwest to west wind
around 10 knots. Medium to high confidence.
Wednesday...Mainly VFR. Some early morning visibility
restrictions due to fog are possible. Southwest to south wind
around 10 knots. Medium to high confidence.
Thursday...Mainly VFR. Some early morning ceiling and
visibility restrictions due to stratus and/or fog are possible.
A chance of afternoon and evening showers and thunderstorms.
Southwest to south wind 10 to 15 knots. Medium confidence.
&&
.MARINE...
Winds and seas should stay below SCA criteria through tonight.
However, there is a potential for gusty and erratic winds in the
vicinity of any showers and thunderstorms expected late today
and tonight.
Outlook...
Monday through Wednesday...No marine headlines are anticipated.
Winds are generally expected to be around 5 to 10 knots on
Monday and Tuesday then increasing slightly to around 10 knots
on Wednesday. Seas around 2 to 3 feet are expected.
Thursday...Marine headlines unlikely. Southerly winds are
likely to increase to around 10 to 15 knots with gusts to around
20 knots possible. Seas are likely to increase as well, to
around 3 to 5 feet.
Rip currents...
Through Monday, there is a LOW risk for the development of
dangerous rip currents for the New Jersey and Delaware beaches.
A southeasterly wind to around 10 mph this afternoon, however
waves in the surf zone will remain on the lower side (around 2
feet). Similar surf conditions on Monday, however winds will be
west to northwest 5-10 mph although a sea breeze may develop. A
medium period (7 to 10 second) southeasterly swell is expected
to continue through this time.
&&
.HYDROLOGY...
As mentioned in the near term section, there is 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 (though the location of these
higher amounts is very uncertain). At this point, E Central PA
and northern NJ are the favored areas for higher rainfall
amounts - especially northern NJ where the showers and storms
have the potential to linger the longest. 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 develops,
there is some potential for main stem river flooding with this
event. However, as mentioned there is considerable uncertainty
with where the heaviest rain amounts will be and thus the
ultimate impacts for the main stem rivers.
&&
.CLIMATE...
Widespread heavy rainfall is forecast across portions of the
forecast area on Sunday, July 9th. Below is a list of the daily
precipitation records for the date.
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>019.
Flood Watch until midnight EDT tonight for NJZ020>027.
Flood Watch through late tonight for NJZ001-007>010-012>015.
DE...Flood Watch until midnight EDT tonight for DEZ001.
Flood Watch until midnight EDT tonight for DEZ002>004.
MD...Flood Watch until midnight EDT tonight for MDZ012-015.
Flood Watch until midnight EDT tonight for MDZ019-020.
MARINE...None.
&&
SYNOPSIS...AKL/Iovino
NEAR TERM...Iovino/Johnson
SHORT TERM...AKL/Iovino
LONG TERM...AKL/Iovino
AVIATION...AKL/Iovino/Johnson
MARINE...AKL/Gorse/Johnson
HYDROLOGY...Johnson
CLIMATE...StaarmannHazardous Weather Outlook National Weather Service Mount Holly NJ 1016 AM EDT Sun Jul 09 2023 DEZ001-101416- New Castle- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for New Castle County in Delaware. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. DEZ002-101416- Kent- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Kent County in Delaware. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. DEZ003-101416- Inland Sussex- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for inland portions of Sussex County in Delaware. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. 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. DEZ004-101416- Delaware Beaches- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for the Atlantic coastal portions of Sussex County in Delaware. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. 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. PAZ054-101416- Carbon- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Carbon County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. PAZ055-101416- Monroe- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Monroe County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. PAZ060-101416- Berks- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Berks County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. PAZ061-101416- Lehigh- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Lehigh County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. PAZ062-101416- Northampton- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Northampton County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. PAZ070-101416- Delaware- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Delaware County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. PAZ071-101416- Philadelphia- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Philadelphia County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. PAZ101-101416- Western Chester- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for western Chester County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. PAZ102-101416- Eastern Chester- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for eastern Chester County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. PAZ103-101416- Western Montgomery- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for western Montgomery County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. PAZ104-101416- Eastern Montgomery- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for eastern Montgomery County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. PAZ105-101416- Upper Bucks- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for upper Bucks County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. PAZ106-101416- Lower Bucks- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for lower Bucks County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. NJZ001-101416- Sussex- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Sussex County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. NJZ007-101416- Warren- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Warren County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. NJZ008-101416- Morris- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Morris County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. NJZ009-101416- Hunterdon- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Hunterdon County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. NJZ010-101416- Somerset- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Somerset County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. NJZ012-101416- Middlesex- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Middlesex County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. 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. NJZ013-101416- Western Monmouth- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for western Monmouth County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. 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. NJZ014-101416- Eastern Monmouth- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for eastern Monmouth County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. 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. NJZ015-101416- Mercer- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Mercer County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. NJZ016-101416- Salem- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Salem County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. NJZ017-101416- Gloucester- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Gloucester County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. NJZ018-101416- Camden- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Camden County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. NJZ019-101416- Northwestern Burlington- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for northwestern Burlington County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. NJZ020-101416- Ocean- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for inland portions of Ocean County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. 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. NJZ021-101416- Cumberland- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Cumberland County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. NJZ022-101416- Atlantic- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for inland portions of Atlantic County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. 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. NJZ023-101416- Cape May- 1016 AM 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. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. 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. NJZ024-101416- Atlantic Coastal Cape May- 1016 AM 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. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. 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. NJZ025-101416- Coastal Atlantic- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for coastal portions of Atlantic County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. 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. NJZ026-101416- Coastal Ocean- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for coastal portions of Ocean County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. 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. NJZ027-101416- Southeastern Burlington- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for southeastern Burlington County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. 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. MDZ012-101416- Kent MD- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Kent County in Maryland. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. MDZ015-101416- Queen Annes- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Queen Annes County in Maryland. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. 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. MDZ019-101416- Talbot- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Talbot County in Maryland. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. 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. MDZ020-101416- Caroline- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for Caroline County in Maryland. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. 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. ANZ430-101416- Delaware Bay waters north of East Point NJ to Slaughter Beach DE- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for upper Delaware Bay. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. 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. ANZ431-101416- Delaware Bay waters south of East Point NJ to Slaughter Beach DE- 1016 AM EDT Sun Jul 09 2023 This Hazardous Weather Outlook is for lower Delaware Bay. .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. ANZ450-101416- Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm- 1016 AM 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. ANZ451-101416- Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm- 1016 AM 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. ANZ452-101416- Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm- 1016 AM 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. ANZ453-101416- Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm- 1016 AM 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. 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. ANZ454-101416- Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm- 1016 AM 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. 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. ANZ455-101416- Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm- 1016 AM 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. Scattered severe thunderstorms are possible. 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.
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
245 PM EDT Sun Jul 9 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0144 PM Flood 1 E Phillipsburg 40.70N 75.18W
07/09/2023 Warren NJ Dept of Highways
NJ DOT - STMC: Flooding on US 22 westbound
West of Roseberry St (Phillipsburg) 1 Right
lane of 3 lanes closed.
&&
DeSilvaPreliminary Local Storm Report
National Weather Service Mount Holly NJ
251 PM EDT Sun Jul 9 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0231 PM Flood Vernon 41.20N 74.49W
07/09/2023 Sussex NJ Public
Several videos of street flooding on Route
94 in Vernon.
&&
DeSilvaPreliminary Local Storm Report
National Weather Service Mount Holly NJ
256 PM EDT Sun Jul 9 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0254 PM Flash Flood 1 W Temple 40.41N 75.94W
07/09/2023 Berks PA Dept of Highways
Live streaming video of US 222 @ PA 61 EXIT
with all lanes under water. Road closed in
both directions.
&&
DeSilvaSpecial Weather Statement
National Weather Service Mount Holly NJ
259 PM EDT Sun Jul 9 2023
NJZ008>010-091930-
Hunterdon NJ-Morris NJ-Somerset NJ-
259 PM EDT Sun Jul 9 2023
...A strong thunderstorm will impact portions of northeastern
Hunterdon, southwestern Morris and northwestern Somerset Counties
through 330 PM EDT...
At 258 PM EDT, Doppler radar was tracking a strong thunderstorm near
Califon, or 11 miles northwest of Somerville, moving northeast at 10
mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Mendham, Peapack And Gladstone, Chester, Lebanon, Califon, Far Hills,
White House Station, Long Valley and Bernardsville.
This includes Interstate 78 in New Jersey between mile markers 20 and
30.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
A Severe Thunderstorm Watch remains in effect until 600 PM EDT for
northern and northwestern New Jersey.
&&
LAT...LON 4059 7470 4065 7487 4084 7481 4076 7456
TIME...MOT...LOC 1858Z 209DEG 11KT 4069 7476
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
MLBSpecial Weather Statement
National Weather Service Mount Holly NJ
301 PM EDT Sun Jul 9 2023
PAZ060-061-091930-
Lehigh PA-Berks PA-
301 PM EDT Sun Jul 9 2023
...A strong thunderstorm will impact portions of northeastern Berks
and southwestern Lehigh Counties through 330 PM EDT...
At 301 PM EDT, Doppler radar was tracking a strong thunderstorm over
Fleetwood, or 10 miles northeast of Reading, moving north at 20 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Kutztown, Fleetwood, Topton and Lyons.
This includes Interstate 78 in Pennsylvania between mile markers 39
and 42.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
A Severe Thunderstorm Watch remains in effect until 600 PM EDT for
eastern Pennsylvania.
&&
LAT...LON 4035 7572 4040 7590 4059 7585 4054 7560
TIME...MOT...LOC 1901Z 195DEG 18KT 4044 7579
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
MLBSpecial Weather Statement
National Weather Service Mount Holly NJ
303 PM EDT Sun Jul 9 2023
PAZ060-101-091930-
Western Chester PA-Berks PA-
303 PM EDT Sun Jul 9 2023
...A strong thunderstorm will impact portions of south central Berks
and north central Chester Counties through 330 PM EDT...
At 303 PM EDT, Doppler radar was tracking a strong thunderstorm over
Honey Brook, or 7 miles east of New Holland, moving north at 15 mph.
HAZARD...Wind gusts up to 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Honey Brook, Elverson and New Morgan.
This includes the following highways...
Pennsylvania Turnpike between mile markers 295 and 303.
Interstate 176 in Pennsylvania between mile markers 1 and 5.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
A Severe Thunderstorm Watch remains in effect until 600 PM EDT for
eastern and southeastern Pennsylvania.
&&
LAT...LON 4025 7600 4020 7575 3999 7589 4000 7596
4004 7593 4011 7594 4014 7588 4019 7597
4023 7601
TIME...MOT...LOC 1903Z 194DEG 11KT 4008 7595
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
MLBThe Philadelphia radar (KDIX), 84 km away, was scanning. The volume nearest the first event began at 19:16 UTC.
6 flash flood. Local standard time, as filed.
Halls Mill Road in Readington Township became impassable due to flooding.
Road closures along NJ Route 49 between Interstate 295 and Chestnut Street in Pennsville Township due to flooding.
NJ Route 44 was closed at Berkley Road in Paulsboro due to flooding.
The South Branch of the Raritan River overflowed and flooded the Camp Carr Campground in Clinton Township.
Minor flooding occurred along the Neshanic River in Raritan Township.
Moderate flooding occurred on the Lamington River between Bedminster Township and Branchburg Township.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New Jersey in 2023Every state in 2023This day in weather historyWarnings in New Jersey, July 2023
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1100785, 1100825, 1100840, 1100786, 1100843, 1100845.