Alert archive / Pennsylvania / River Flood Warnings in 2023

River Flood Warning 64, NWS Philadelphia/Mount Holly

December 18, 2023Lehigh County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Dec 18, 2023, 10:06 AM EST for Lehigh County, Northampton County, Pennsylvania. It took effect at Dec 18, 2023, 1:00 PM EST. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Dec 18, 2023, 10:06 AM EST (15:06 UTC)
In effect from
Dec 18, 2023, 1:00 PM EST
Expired
Dec 18, 2023, 9:55 PM EST
In force
9 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
Minor

Counties Lehigh County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 129 km from the middle of the area, began a volume at 15:10 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 river

Written for the forecast point Lehigh River at Walnutport (WNTP1). The gauge peaked at 9.00 ft at Dec 18, 2023, 2:00 PM EST.

actionminormoderate51012/1812/1912/20
Action stage
7.5 ft
Minor stage
8 ft
Moderate stage
12 ft
Major stage
16 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01451000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The text

As transmitted.

647 
WGUS41 KPHI 181506
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
1006 AM EST Mon Dec 18 2023

...The National Weather Service in Mount Holly NJ has issued a Flood 
Warning for the following rivers in Pennsylvania...

  Lehigh River At Walnutport affecting Northampton and Lehigh 
  Counties.



For the Lehigh River...including Walnutport...Minor flooding is 
forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

Additional information is available at www.weather.gov/phi.

The next statement will be issued this evening at 700 PM EST.

&&

PAC077-095-190000-
/O.NEW.KPHI.FL.W.0064.231218T1800Z-231219T0000Z/
/WNTP1.1.ER.231218T1800Z.231218T1800Z.231218T1800Z.NO/
1006 AM EST Mon Dec 18 2023

...FLOOD WARNING IN EFFECT UNTIL THIS EVENING...

* WHAT...Minor flooding is forecast.

* WHERE...Lehigh River at Walnutport.

* WHEN...Until this evening.

* IMPACTS...At 6.0 feet, Minor flooding begins downstream at 
  Catasaqua and Hokendaqua.

* ADDITIONAL DETAILS...
  - At 9:45 AM EST Monday the stage was 8.0 feet.
  - Forecast...The river is expected to rise to a crest of 8.0
    feet this afternoon.
  - Flood stage is 8.0 feet.
  - Flood History...This crest compares to a previous crest of
    7.5 feet on 09/17/1999.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (1 pm)        Crest
Location        Stg   Stg Day/Time    Tue  Wed        Stg Time Date

Lehigh River
Walnutport      8.0   8.0  Mon 9 am   5.7  4.8        8.0 1pm 12/18


&&

LAT...LON 4077 7563 4081 7559 4064 7542 4059 7545


$$

Kruzdlo
3 follow-up statements
359 
WGUS81 KPHI 182234
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
534 PM EST Mon Dec 18 2023

...The Flood Warning continues for the following rivers in 
Pennsylvania...

  Lehigh River At Walnutport affecting Northampton and Lehigh 
  Counties.



For the Lehigh River...including Walnutport...Minor flooding is 
forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

Additional information is available at www.weather.gov/phi.

The next statement will be issued this evening at 700 PM EST.

&&

PAC077-095-190000-
/O.CON.KPHI.FL.W.0064.000000T0000Z-231219T0000Z/
/WNTP1.1.ER.231218T1452Z.231218T1845Z.231219T0000Z.NO/
534 PM EST Mon Dec 18 2023

...FLOOD WARNING REMAINS IN EFFECT UNTIL THIS EVENING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Lehigh River at Walnutport.

* WHEN...Until this evening.

* IMPACTS...At 6.0 feet, Minor flooding begins downstream at 
  Catasaqua and Hokendaqua.

* ADDITIONAL DETAILS...
  - At 5:15 PM EST Monday the stage was 8.6 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 5:15 PM EST Monday was 9.0 feet.
  - Forecast...The river is expected to fall below flood stage
    this evening and continue falling to 4.3 feet early Thursday
    afternoon.
  - Flood stage is 8.0 feet.
  - Flood History...This crest compares to a previous crest of
    8.8 feet on 09/09/2011.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (7 pm)        Crest
Location        Stg   Stg Day/Time    Tue  Wed        Stg Time Date

Lehigh River
Walnutport      8.0   8.6  Mon 5 pm   5.4  4.6     Crested & falling


&&

LAT...LON 4077 7563 4081 7559 4064 7542 4059 7545


$$

Kruzdlo
088 
WGUS81 KPHI 182346
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
646 PM EST Mon Dec 18 2023

...The Flood Warning is extended for the following rivers in 
Pennsylvania...

  Lehigh River At Walnutport affecting Northampton and Lehigh 
  Counties.



For the Lehigh River...including Walnutport...Minor flooding is 
forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

Additional information is available at www.weather.gov/phi.

The next statement will be issued this evening at 1000 PM EST.

&&

PAC077-095-190300-
/O.EXT.KPHI.FL.W.0064.000000T0000Z-231219T0300Z/
/WNTP1.1.ER.231218T1452Z.231218T1845Z.231219T0000Z.NO/
646 PM EST Mon Dec 18 2023

...FLOOD WARNING NOW IN EFFECT UNTIL LATE THIS EVENING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Lehigh River at Walnutport.

* WHEN...Until late this evening.

* IMPACTS...At 6.0 feet, Minor flooding begins downstream at 
  Catasaqua and Hokendaqua.

* ADDITIONAL DETAILS...
  - At 6:30 PM EST Monday the stage was 8.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 6:30 PM EST Monday was 9.0 feet.
  - Forecast...The river is expected to fall below flood stage
    this evening and continue falling to 4.3 feet early Thursday
    afternoon.
  - Flood stage is 8.0 feet.
  - Flood History...This crest compares to a previous crest of
    8.8 feet on 09/09/2011.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (7 pm)        Crest
Location        Stg   Stg Day/Time    Tue  Wed        Stg Time Date

Lehigh River
Walnutport      8.0   8.3  Mon 6 pm   5.4  4.6     Crested & falling


&&

LAT...LON 4077 7563 4081 7559 4064 7542 4059 7545


$$

Kruzdlo
468 
WGUS81 KPHI 190255
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
955 PM EST Mon Dec 18 2023

...The Flood Warning is cancelled for the following rivers in 
Pennsylvania...

  Lehigh River At Walnutport affecting Northampton and Lehigh 
  Counties.



PAC077-095-190400-
/O.CAN.KPHI.FL.W.0064.000000T0000Z-231219T0255Z/
/WNTP1.1.ER.231218T1452Z.231218T1845Z.231219T0045Z.NO/
955 PM EST Mon Dec 18 2023

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Lehigh River At Walnutport.

* ADDITIONAL DETAILS...
  - At 9:45 PM EST Monday the stage was 7.6 feet.
  - Forecast...The river is expected to fall to 5.0 feet Thursday
    evening.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (7 pm)        Crest
Location        Stg   Stg Day/Time    Tue  Wed        Stg Time Date

Lehigh River
Walnutport      8.0   7.6  Mon 9 pm   6.1  5.4        6.4 1pm 12/19


&&

LAT...LON 4077 7563 4081 7559 4064 7542 4059 7545


$$

MJL

What forecasters said that day

The local office's own words before this river 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 river flood warning went out at Dec 18, 10:05 AM EST, 1 minute earlier.

Area forecast discussion, Dec 18, 10:05 AM EST, 1 minute before
Area Forecast Discussion
National Weather Service Mount Holly NJ
1005 AM EST Mon Dec 18 2023

.SYNOPSIS...
Strengthening area of low pressure will move across our area
later this morning and lift north and east into south-eastern
Canada by this evening. An upper trough with a surface cold
front will pass through the region on Tuesday. High pressure
then builds east through the end of the work week. Another weak
cold front may approach for Saturday.

&&

.NEAR TERM /THROUGH TONIGHT/...
As of 930 AM...The base of the 500mb trough is swinging through
DelmarVa with dry air starting to push in on the back side of
the storm. We've see the radar start to trend light as the bulk
of the precip has tapered off. Obs are showing the cold air
advection is surging in across the region so the rainfall should
continue to rapid wane as the lift weakens and subsidence
begins. Winds behind the front are turning westerly fairly
quickly and should remain westerly and breezy through much of
the afternoon. Previous forecast discussion follows:

The latest surface analysis now places the primary surface low
(985 mb) offshore of Cape Hatteras with the secondary low that
formed along the inverted trough near the Catskills of New York
State. Heavy rainfall and gusty winds have been ongoing this
morning with several reports of flooding across the area. Winds
earlier this morning have gusted up to 40-50+ mph along the
coast of NJ/DE, but these winds have tapered off...for now.
Rainfall totals as of 6 AM have ranged from 2.0-4.0 inches, with
localized 5.0+ inches recorded in southern Delaware.

Radar reflectivity indicates that the heaviest rainfall for the
most part has now lifted out of the Delmarva and is currently
tracking across E PA and New Jersey. The heavy rainfall will
continue for another 1-2 hours, before beginning to become
lighter in nature through the late morning. As the primary low
passes by offshore, any lingering showers will taper off by
early afternoon.

The strongest of winds have now passed as the combination of the
low level jet and enhanced low level flow have now moved off to
our north and east. Thus, the Wind Advisory along the coasts of
NJ and DE has been allowed to expire at 7 AM. There will be a
temporarily lull in wind activity this morning as the elongated
trough remains over the area. However, as the primary low begins
to pass by winds will abruptly pick back up again on the
backside of the low with west-northwest winds up to 35-45 mph
this afternoon. For now, have held off on any wind advisories
across our area for this afternoon.

In terms of storm total rainfall, we are looking at a
widespread swath of 2.5-4.5 inches of rain with locally higher
amounts up to 6.0 inches across portions of Delaware and
Maryland where the axis of rainfall was maximized. The Flood
Watch remains in effect through this afternoon as many of the
smaller rivers and streams will reach their flood stages later
today.

Just as one system passes by, another one will be quickly on its
heels. An upper level trough will swing towards our area late
tonight into early Tuesday. Most of the area will remain dry, but in
the higher elevations of the Poconos, Lehigh Valley and Northern NJ,
there looks to be enough moisture to where some precipitation may
reach the ground. This precip would be in the form of snow as cold
air advection will be well underway with temperatures falling below
freezing. In short, snowfall amounts will be rather light, but will
range from a trace to a half-inch mainly across Carbon and Monroe
counties. Any snowfall should end by Tuesday morning.

&&

.SHORT TERM /TUESDAY THROUGH WEDNESDAY/...
Tuesday should be breezy. The tightest low/mid level height
gradient and tightest surface pressure gradient never quite line
up perfectly, so max wind gusts are likely to be in the 25 to
30 mph range (possibly as high as 35 mph on ridge lines).

Once this trough slides east of our region Tuesday night into
Wednesday, it should kick off a return to dry conditions and
seasonable temperatures.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...
The trend of dry and seasonable is expected to continue
Thursday and Friday as a broad surface high pressure system will
gradually build eastward towards our region.

In the upper levels, a broad ridge becomes entrenched over the
eastern U.S.. Several models depict a short wave trough sliding
eastward to the south of the ridge, which could result in
precipitation by next weekend, but once again, moisture will be
limited. Additionally, depending on how robust the ridge is, the
short wave trough may weaken as it tries to undercut it. All
that being said, stayed with the previous forecast in keeping
slight chance pops on Saturday.

&&

.AVIATION /15Z MONDAY THROUGH FRIDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG,
KMIV, KACY and surrounding areas.

Today...Heavy rainfall will continue north of KPHL for about
another 1-2 hours before becoming light in nature. MVFR to IFR
ceilings/visibilities will gradually lift to VFR by the late
afternoon. E-SE winds in the 10-20 kt range, will become W-NW
winds develop on the backside of the low up between 15-25 kt
with gusts up to 30-35 kt possible. Moderate confidence.

Tonight...VFR expected at all terminals. Winds diminish to SW-W
around 10-15 kt. Isolated chance of a snow shower at KABE, otherwise
remaining dry at all terminals. Moderate confidence.

Outlook...
Tuesday...VFR expected. SW winds 10 to 15 KT becoming
northwesterly 10 to 20 mph with gusts up to 30 mph. Moderate
confidence.

Wednesday through Friday...VFR. NW winds 5 to 15 kt. High
confidence.

&&

.MARINE...
A Gale Warning remains in effect through 6 PM today. SE winds around
30-35 kt sustained with gusts up to 40-45 kt will continue through
this morning. As the low passes by later this morning, winds
will switch around to the W-NW and be sustained around 25-30 kt
with gusts up to 30-40 kt through this afternoon. Seas ranging
from 14-18 feet with localized seas up to 20 feet possible
through today.

For tonight, Small Craft Advisory conditions will continue as winds
diminish and gradually become SW-W around 15-20 kt with gusts up to
25 kt. Seas likewise will gradually lower as well between 10-14
feet.

Outlook...

Tuesday...SCA conditions are expected on all waters both due to
NW winds gusting up to 30 kt, and elevated seas primarily on
the Atlantic coastal waters.

Tuesday night through Friday...Once winds diminish, no
additional SCA conditions are likely on the Delaware Bay. On the
Atlantic coastal waters elevated seas may linger for most, if
not all of this period.

&&

.HYDROLOGY...
Flood Watch remains in effect for our entire area through this
afternoon.

Rainfall totals of 3 to 5 inches have been seen across the
forecast region with a significant number of gages in flood
stage. Several gages are currently either in Moderate or
forecast to increase into moderate and/or major flood stage.
Soil moisture from FLASH Crest data suggests that nearly the
entire Raritan and Passaic basins are completely saturated.
This is leading to all of the rainfall going straight into
runoff. The combination of high soil moisture from last
weekend's storm and the excessive rainfall from this storm has
lead to rivers responding much higher than initially forecast.

Please continue to monitor information from Law Enforcement,
local media, and heed any warnings in effect. Avoid flooded
roadways and when safely possible please pass along flood
reports to the NWS.

&&

.TIDES/COASTAL FLOODING...
The Coastal Flood Warning for the tidal Delaware River has been
allowed to expire. High tide has passed and water levels will
continue to recede. However, excessive runoff from rainfall may
continue to result in flooding of roadways and urbanized areas,
especially near tidal waterways.

The onshore surge will last the longest across the central to
especially northern portions of the New Jersey coast. Widespread
minor tidal flooding is expected with the midday high tide,
although this may subside more by later today as the winds turn
offshore and strengthen. Water will likely be trapped for a
while in Barnegat Bay (Ocean County) as the flow turns offshore
and the water, including runoff, sloshes around. Due to a
combination of freshwater runoff from the heavy rain, the surge
being slower to drain out of Barnegat Bay, and westerly winds
pushing the water toward the bay side of the barrier island,
there could be locally MODERATE flooding for the late morning
and early afternoon high tide.

Farther south for the Atlantic coast of Sussex County, Delaware,
mostly back bay flooding should continue for a while today and
therefore maintained the Coastal Flood Advisory for now.

The Claiborne tidal gauge reached well above minor flood stage,
so a Coastal Flood Advisory was issued for the nearby eastern
shore counties. Tolchester Beach is cresting right at minor
flood stage threshold, so any tidal flooding in Ken (MD) County
should remain isolated.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Flood Watch until 6 PM EST this evening for PAZ054-055-060>062-
     070-071-101>106.
NJ...Flood Watch until 6 PM EST this evening for NJZ001-007>010-
     012>027.
     Coastal Flood Advisory until 4 PM EST this afternoon for
     NJZ012>014-020-022>027.
DE...Flood Watch until 6 PM EST this evening for DEZ001>004.
     Coastal Flood Advisory until 4 PM EST this afternoon for
     DEZ003-004.
MD...Flood Watch until 6 PM EST this evening for MDZ012-015-019-020.
     Coastal Flood Advisory until noon EST today for MDZ015-019-020.
MARINE...Gale Warning until 6 PM EST this evening for ANZ430-431-
     450>455.

&&

SYNOPSIS...DeSilva/Johnson/RCM
NEAR TERM...Deal/DeSilva
SHORT TERM...Johnson
LONG TERM...Johnson
AVIATION...DeSilva/Johnson/RCM
MARINE...DeSilva/Johnson/RCM
HYDROLOGY...WFO PHI
TIDES/COASTAL FLOODING...Staarmann
Hazardous weather outlook, Dec 18, 4:44 AM EST, 5 hours 22 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
0444 AM EST Mon Dec 18 2023

DEZ001-190944-
New Castle-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for New Castle 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.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

DEZ002-190944-
Kent-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Kent 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.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

DEZ003-190944-
Inland Sussex-
0444 AM EST Mon Dec 18 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.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

DEZ004-190944-
Delaware Beaches-
0444 AM EST Mon Dec 18 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.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

PAZ054-190944-
Carbon-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Carbon County in Pennsylvania.

.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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

PAZ055-190944-
Monroe-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Monroe County in Pennsylvania.

.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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

PAZ060-190944-
Berks-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Berks County in Pennsylvania.

.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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

PAZ061-190944-
Lehigh-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Lehigh County in Pennsylvania.

.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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

PAZ062-190944-
Northampton-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Northampton County in
Pennsylvania.

.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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

PAZ070-190944-
Delaware-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Delaware County in Pennsylvania.

.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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

PAZ071-190944-
Philadelphia-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Philadelphia County in
Pennsylvania.

.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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

PAZ101-190944-
Western Chester-
0444 AM EST Mon Dec 18 2023

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

.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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

PAZ102-190944-
Eastern Chester-
0444 AM EST Mon Dec 18 2023

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

.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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

PAZ103-190944-
Western Montgomery-
0444 AM EST Mon Dec 18 2023

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

.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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

PAZ104-190944-
Eastern Montgomery-
0444 AM EST Mon Dec 18 2023

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

.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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

PAZ105-190944-
Upper Bucks-
0444 AM EST Mon Dec 18 2023

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

.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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

PAZ106-190944-
Lower Bucks-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Minor coastal flooding is possible.
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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ001-190944-
Sussex-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Sussex 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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ007-190944-
Warren-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Warren 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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ008-190944-
Morris-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Morris 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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ009-190944-
Hunterdon-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Hunterdon 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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ010-190944-
Somerset-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Somerset 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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ012-190944-
Middlesex-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Minor coastal flooding is possible.
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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ013-190944-
Western Monmouth-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Minor coastal flooding is possible.
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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ014-190944-
Eastern Monmouth-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Minor coastal flooding is possible.
Several instances of flooding are possible, especially in urban and
poor-drainage areas and near vulnerable small creeks and streams.
Large breaking waves are expected to result in dangerous
swimming conditions in the surf zone. Localized beach erosion is possible.
Windy conditions may cause isolated instances of tree damage and power outages.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Life-threatening swimming conditions in the surf zone
and significant beach erosion are expected on Tuesday.
Life-threatening swimming conditions in the surf zone
and significant beach erosion are expected on Tuesday.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

NJZ015-190944-
Mercer-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Mercer 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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ016-190944-
Salem-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Salem 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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ017-190944-
Gloucester-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Gloucester 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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ018-190944-
Camden-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Camden 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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ019-190944-
Northwestern Burlington-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Minor coastal flooding is possible.
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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ020-190944-
Ocean-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Minor coastal flooding is possible.
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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ021-190944-
Cumberland-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Cumberland 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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ022-190944-
Atlantic-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Minor coastal flooding is possible.
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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ023-190944-
Cape May-
0444 AM EST Mon Dec 18 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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

NJZ024-190944-
Atlantic Coastal Cape May-
0444 AM EST Mon Dec 18 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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Large breaking waves are expected to result in dangerous swimming
conditions in the surf zone on Tuesday. Localized beach erosion
is possible.
Large breaking waves are expected to result in dangerous swimming
conditions in the surf zone on Tuesday. Localized beach erosion
is possible.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

NJZ025-190944-
Coastal Atlantic-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Minor coastal flooding is possible.
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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Large breaking waves are expected to result in dangerous swimming
conditions in the surf zone on Tuesday. Localized beach erosion
is possible.
Large breaking waves are expected to result in dangerous swimming
conditions in the surf zone on Tuesday. Localized beach erosion
is possible.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

NJZ026-190944-
Coastal Ocean-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Minor coastal flooding is possible.
Several instances of flooding are possible, especially in urban and
poor-drainage areas and near vulnerable small creeks and streams.
Large breaking waves are expected to result in dangerous
swimming conditions in the surf zone. Localized beach erosion is possible.
Windy conditions may cause isolated instances of tree damage and power outages.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Life-threatening swimming conditions in the surf zone
and significant beach erosion are expected on Tuesday.
Life-threatening swimming conditions in the surf zone
and significant beach erosion are expected on Tuesday.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

NJZ027-190944-
Southeastern Burlington-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Minor coastal flooding is possible.
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/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

MDZ012-190944-
Kent MD-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Kent 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.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

MDZ015-190944-
Queen Annes-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for Queen Annes 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.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

MDZ019-190944-
Talbot-
0444 AM EST Mon Dec 18 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.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

MDZ020-190944-
Caroline-
0444 AM EST Mon Dec 18 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.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

ANZ430-190944-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for upper Delaware Bay.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

ANZ431-190944-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
0444 AM EST Mon Dec 18 2023

This Hazardous Weather Outlook is for lower Delaware Bay.

.DAY ONE...Through tonight.

Gale-force winds and/or very rough seas are forecast.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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.

ANZ450-190944-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Large breaking waves are expected to result in dangerous
swimming conditions in the surf zone. Localized beach erosion is possible.
Hurricane-force winds and/or dangerously high seas are forecast.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Life-threatening swimming conditions in the surf zone
and significant beach erosion are expected on Tuesday.
Life-threatening swimming conditions in the surf zone
and significant beach erosion are expected on Tuesday.
Gale-force winds and/or very rough seas are forecast on Tuesday.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

ANZ451-190944-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Large breaking waves are expected to result in dangerous
swimming conditions in the surf zone. Localized beach erosion is possible.
Hurricane-force winds and/or dangerously high seas are forecast.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Life-threatening swimming conditions in the surf zone
and significant beach erosion are expected on Tuesday.
Life-threatening swimming conditions in the surf zone
and significant beach erosion are expected on Tuesday.
Gale-force winds and/or very rough seas are forecast on Tuesday.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

ANZ452-190944-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Hurricane-force winds and/or dangerously high seas are forecast.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Large breaking waves are expected to result in dangerous swimming
conditions in the surf zone on Tuesday. Localized beach erosion
is possible.
Large breaking waves are expected to result in dangerous swimming
conditions in the surf zone on Tuesday. Localized beach erosion
is possible.
Gale-force winds and/or very rough seas are forecast on Tuesday.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

ANZ453-190944-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Hurricane-force winds and/or dangerously high seas are forecast.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Large breaking waves are expected to result in dangerous swimming
conditions in the surf zone on Tuesday. Localized beach erosion
is possible.
Large breaking waves are expected to result in dangerous swimming
conditions in the surf zone on Tuesday. Localized beach erosion
is possible.
Gale-force winds and/or very rough seas are forecast on Tuesday.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

ANZ454-190944-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
0444 AM EST Mon Dec 18 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.

Storm-force winds and/or very high seas are expected.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Gale-force winds and/or very rough seas are forecast on Tuesday.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

ANZ455-190944-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
0444 AM EST Mon Dec 18 2023

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

.DAY ONE...Through tonight.

Storm-force winds and/or very high seas are expected.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Gale-force winds and/or very rough seas are forecast on Tuesday.

Please go to weather.gov/erh/ghwo?wfo=phi for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Local storm report, Dec 18, 9:31 AM EST, 35 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
931 AM EST Mon Dec 18 2023

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

0829 AM     Rain             1 E Willow Grove        40.14N 75.10W
12/18/2023  M3.64 inch       Montgomery         PA   Trained Spotter

            Local Roads were flooded in the area but are
            now starting to recede.

&&

Staarmann
Local storm report, Dec 18, 9:32 AM EST, 34 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
932 AM EST Mon Dec 18 2023

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

0815 AM     Rain             Washington Twp          40.72N 75.63W
12/18/2023  M2.53 inch       Lehigh             PA   Trained Spotter

&&

Staarmann
Local storm report, Dec 18, 9:33 AM EST, 33 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
933 AM EST Mon Dec 18 2023

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

0855 AM     Rain             South River             40.45N 74.38W
12/18/2023  M4.62 inch       Middlesex          NJ   Trained Spotter

            Some minor basement flooding beginning.

&&

Staarmann
Local storm report, Dec 18, 9:36 AM EST, 30 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
936 AM EST Mon Dec 18 2023

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

0925 AM     Flood            1 SW Ancient Oaks       40.53N 75.60W
12/18/2023                   Lehigh             PA   Trained Spotter

            Spring Creek Road closed due to flooding
            near Route 100 and Trexlertown Road. 3.78
            inches of rain.

&&

Staarmann
Local storm report, Dec 18, 9:37 AM EST, 29 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
937 AM EST Mon Dec 18 2023

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

0900 AM     Rain             2 SSW Jackson           40.10N 74.29W
12/18/2023  M3.20 inch       Ocean              NJ   Trained Spotter

            Storm total rain.

&&

Staarmann
Local storm report, Dec 18, 9:41 AM EST, 25 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
941 AM EST Mon Dec 18 2023

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

0800 AM     Flood            5 ENE Delmar            38.47N 75.49W
12/18/2023                   Sussex             DE   Cocorahs

            Water is running across Brittingham Road at
            two overflowing pipe locations. Water is
            ponding and crossing Pepperbox Road. Water
            is overflowing pipe and running across Oak
            Branch Road. Widespread field ponding.

&&

Staarmann

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 17, 11:44 PM ESTAreal Flood AdvisoryPHILehigh, Northampton4 hr
Dec 18, 1:00 AM ESTAreal Flood AdvisoryPHIChester, Montgomery8 hr
Dec 18, 1:01 AM ESTAreal Flood AdvisoryPHILehigh, Montgomery22 min
Dec 18, 1:03 AM ESTAreal Flood AdvisoryPHILehigh3 hr
Dec 18, 1:23 AM ESTAreal Flood WarningPHILehigh, Montgomery15 hr
Dec 18, 1:51 AM ESTAreal Flood WarningPHIChester16 hr
Dec 18, 2:05 AM ESTRiver Flood WarningPHIChester20 hr
Dec 18, 2:08 AM ESTAreal Flood WarningPHIChester, Delaware12 hr
Dec 18, 2:30 AM ESTAreal Flood WarningPHIBucks, Delaware, Montgomery, Philadelphia16 hr
Dec 18, 2:45 AM ESTAreal Flood WarningPHIChester6 hr
Dec 18, 3:06 AM ESTAreal Flood AdvisoryPHIBucks, Montgomery64 min
Dec 18, 3:11 AM ESTAreal Flood AdvisoryPHIBucks, Montgomery72 min
Dec 18, 3:22 AM ESTAreal Flood AdvisoryPHIChester34 min
Dec 18, 3:56 AM ESTAreal Flood WarningPHIChester5 hr
Dec 18, 4:00 AM ESTAreal Flood WarningPHILehigh21 hr
Dec 18, 4:07 AM ESTAreal Flood WarningPHILehigh, Northampton23 hr
Dec 18, 4:10 AM ESTAreal Flood WarningPHIBucks, Montgomery14 hr
Dec 18, 4:20 AM ESTRiver Flood WarningPHIChester, Delaware22 hr
Dec 18, 4:23 AM ESTAreal Flood WarningPHIBucks, Montgomery10 hr
Dec 18, 4:27 AM ESTRiver Flood WarningPHIMontgomery13 hr
Dec 18, 4:35 AM ESTRiver Flood WarningPHIMontgomery, Philadelphia20 hr
Dec 18, 4:41 AM ESTAreal Flood WarningPHIBerks, Chester, Montgomery14 hr
Dec 18, 4:49 AM ESTRiver Flood WarningPHIChester, Montgomery, Philadelphia30 hr
Dec 18, 4:51 AM ESTRiver Flood WarningPHIBucks18 hr
Dec 18, 5:00 AM ESTRiver Flood WarningPHIMontgomery30 hr
Dec 18, 5:19 AM ESTRiver Flood WarningPHIDelaware9 hr
Dec 18, 5:22 AM ESTCoastal Flood WarningPHIBucks, Delaware, Philadelphia5 hr
Dec 18, 6:23 AM ESTAreal Flood AdvisoryPHIMonroe, Northampton3 hr
Dec 18, 8:31 AM ESTRiver Flood WarningPHIBerks11 hr
Dec 18, 8:46 AM ESTAreal Flood WarningPHIChester6 hr
Dec 18, 9:41 AM ESTRiver Flood WarningPHIMonroe6 hr
Dec 18, 9:44 AM ESTRiver Flood WarningPHIMonroe13 hr
Dec 18, 2:26 PM ESTRiver Flood WarningPHIBerks12 hr
Dec 18, 2:59 PM ESTRiver Flood WarningPHIPhiladelphia9 hr

Nearby

River Flood Warnings in Pennsylvania, 2023Every river 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.