Alert archive / Pennsylvania / River Flood Warnings in 2023

River Flood Warning 39, NWS Philadelphia/Mount Holly

December 18, 2023Montgomery County, Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Dec 18, 2023, 4:35 AM EST for Montgomery County, Philadelphia County, Pennsylvania. It took effect at Dec 18, 2023, 11:57 AM EST. It was in force for 13 hr.

The area

The outline as issued.

The facts

Issued
Dec 18, 2023, 4:35 AM EST (09:35 UTC)
In effect from
Dec 18, 2023, 11:57 AM EST
Expired
Dec 19, 2023, 12:30 AM EST
In force
13 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
Minor

Counties Montgomery County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 66 km from the middle of the area, began a volume at 09:34 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 Schuylkill River at Philadelphia (PADP1). The gauge peaked at 11.79 ft at Dec 18, 2023, 3:00 PM EST.

actionminormoderate6810121412/1812/1912/20
Action stage
10 ft
Minor stage
11 ft
Moderate stage
13 ft
Major stage
15.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01474500, 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.

570 
WGUS41 KPHI 180935
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
435 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...

  Schuylkill River At Philadelphia affecting Montgomery and 
  Philadelphia Counties.



For the Schuylkill River...including Philadelphia near 30th Street, 
Berne, Reading, Pottstown, Norristown, Philadelphia...Minor flooding 
is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Flooding is occurring or is imminent. Most flood related deaths 
occur in automobiles. Do not attempt to cross water covered bridges, 
dips, or low water crossings. Never try to cross a flowing stream, 
even a small one, on foot. To escape rising water find another route 
over higher ground.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

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

The next statement will be issued this afternoon at 445 PM EST.

&&

PAC091-101-182145-
/O.NEW.KPHI.FL.W.0039.231218T1657Z-231219T1000Z/
/PADP1.1.ER.231218T1657Z.231219T0000Z.231219T0400Z.NO/
435 AM EST Mon Dec 18 2023

...FLOOD WARNING IN EFFECT FROM THIS MORNING TO LATE TONIGHT...

* WHAT...Minor flooding is forecast.

* WHERE...Schuylkill River at Philadelphia.

* WHEN...From this morning to late tonight.

* IMPACTS...At 10.4 feet, Kelly Drive is flooded and closed between 
  North Ferry Road and Falls Bridge.
  At 11.0 feet, Kelly Drive is flooded and closed between Hunting 
  Park Avenue and Falls Bridge. The Flat Rock area is flooded.
  At 11.5 feet, Route 1 off ramp to Ridge Avenue is flooded and 
  closed. MLK Drive is flooded and closed between Greenland Drive 
  and Montgomery Drive.
  At 12.0 feet, Main Street in Manayunk floods in the area of Shurs 
  Lane.

* ADDITIONAL DETAILS...
  - At 4:00 AM EST Monday the stage was 8.2 feet.
  - Forecast...The river is expected to rise above flood stage
    late this morning to a crest of 11.8 feet this evening. It
    will then fall below flood stage late this evening.
  - Flood stage is 11.0 feet.
  - Flood History...This crest compares to a previous crest of
    11.9 feet on 09/29/2004.
  - http://www.weather.gov/safety/flood

&&

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

Schuylkill River
Philadelphia    11.0  8.2  Mon 4 am   10.1 8.6        11.8 7pm 12/18


&&

LAT...LON 3996 7515 3994 7523 3998 7525 4002 7517


$$

MPS
2 follow-up statements
000 
WGUS81 KPHI 181955
FLSPHI

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

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

  Schuylkill River At Philadelphia affecting Montgomery and 
  Philadelphia Counties.



For the Schuylkill River...including Philadelphia near 30th Street, 
Philadelphia...Minor flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Flooding is occurring or is imminent. Most flood related deaths 
occur in automobiles. Do not attempt to cross water covered bridges, 
dips, or low water crossings. Never try to cross a flowing stream, 
even a small one, on foot. To escape rising water find another route 
over higher ground.

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

The next statement will be issued late tonight at 300 AM EST.

&&

PAC091-101-190800-
/O.EXT.KPHI.FL.W.0039.000000T0000Z-231219T2120Z/
/PADP1.1.ER.231218T1438Z.231219T0000Z.231219T1520Z.NO/
255 PM EST Mon Dec 18 2023

...FLOOD WARNING NOW IN EFFECT UNTIL TOMORROW AFTERNOON...

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

* WHERE...Schuylkill River at Philadelphia.

* WHEN...Until tomorrow afternoon.

* IMPACTS...At 10.4 feet, Kelly Drive is flooded and closed between 
  North Ferry Road and Falls Bridge.
  At 11.0 feet, Kelly Drive is flooded and closed between Hunting 
  Park Avenue and Falls Bridge. The Flat Rock area is flooded.
  At 11.5 feet, Route 1 off ramp to Ridge Avenue is flooded and 
  closed. MLK Drive is flooded and closed between Greenland Drive 
  and Montgomery Drive.
  At 12.0 feet, Main Street in Manayunk floods in the area of Shurs 
  Lane.
  At 13.0 feet, Main Street in Manayunk is closed from Ridge Avenue 
  to Leverington Street.

* ADDITIONAL DETAILS...
  - At 2:00 PM EST Monday the stage was 11.8 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 2:00 PM EST Monday was 11.8 feet.
  - Forecast...The river is expected to rise to a crest of 12.5
    feet this evening. It will then fall below flood stage late
    tomorrow morning.
  - Flood stage is 11.0 feet.
  - Flood History...This crest compares to a previous crest of
    12.5 feet on 06/28/2006.
  - http://www.weather.gov/safety/flood

&&

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

Schuylkill River
Philadelphia    11.0  11.8 Mon 2 pm   10.6 8.9        12.5 7pm 12/18


&&

LAT...LON 3996 7515 3994 7523 3998 7525 4002 7517


$$

SFJ
081 
WGUS81 KPHI 190530
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1230 AM EST Tue Dec 19 2023

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

  Schuylkill River At Philadelphia affecting Philadelphia and 
  Montgomery Counties.



PAC091-101-190630-
/O.CAN.KPHI.FL.W.0039.000000T0000Z-231219T0530Z/
/PADP1.1.ER.231218T1438Z.231218T1930Z.231219T0357Z.NO/
1230 AM EST Tue Dec 19 2023

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the Schuylkill River At Philadelphia.

* ADDITIONAL DETAILS...
  - At 12:00 AM EST Tuesday the stage was 10.7 feet and falling.
  - Forecast...The river is expected to fall to 7.6 feet Thursday
    evening.
  - http://www.weather.gov/safety/flood

&&

Stream          Fld   Observed        Fcsts (1 am)        Crest
Location        Stg   Stg Day/Time    Wed  Thu        Stg Time Date

Schuylkill River
Philadelphia    11.0  10.7 Tue 12 a   8.2  7.6         MSG  unknown


&&

LAT...LON 3996 7515 3994 7523 3998 7525 4002 7517


$$

Hoeflich

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, 4:04 AM EST, 31 minutes earlier.

Area forecast discussion, Dec 18, 4:04 AM EST, 31 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
404 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/...
Widespread heavy rainfall, gusty winds and flooding is ongoing
across the forecast area this morning as a deepening area of low
pressure tracks along the Mid-Atlantic Coast. The latest surface
analysis and observations, place the center of the primary low (~985
mb) over the Pamlico Sound of North Carolina, which will continue to
track north-northeastward through the morning hours. Meanwhile, a
secondary area of low pressure has started to develop over the
Eastern Shore of Maryland along a coastal front which is aligned
from north to south from Mt. Pocono to Reading and into the
Delmarva. To the east of this low/boundary is where the heaviest
rainfall and gustiest of winds has occurred so far with rainfall
totals ranging from 1.5-3.5 inches and wind gusts up to 40-50
mph. On the western side, heavy rainfall has occurred as well,
but the winds are much lighter.

Radar reflectivity indicates that our area is in the brunt of the
storm early this morning. Heavy rainfall will continue over the next
3-5 hours or so before the secondary surface low lifts overhead and
eventually to the north and east of our area later this morning.
This will give way to just some lingering showers and periods of
light rain on the backside of the low, which will taper off by early
afternoon before cold air advection takes place. Until then,
southeast flow over the Coastal Plain will remain enhanced as the
low level jet sits overhead. Wind gusts up to 40-50 mph will
continue especially for coastal areas where the Wind Advisory is in
place through 7 AM this morning, with gusts up to 40 mph expected
inland. As the low passes by, winds may briefly subside for about an
hour due to the elongated nature of the low. Nonetheless, this will
be short-lived as winds will abruptly pick back up again on the
backside of the low with west-northwest winds up to 35-45 mph
expected 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 likely across portions of Delaware, Maryland and
southern New Jersey where the axis of rainfall is 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/...
While the Tuesday and Wednesday period won't have nearly as
many weather hazards as what we are about to see over the next
day, there are still a few things to be aware of, including the
potential for some very light snow, primarily in the higher
terrain.

On the heels of the coastal low, another mid and upper level
trough will approach our region, this time from the NW. A low is
expected to close off in the base of this trough by Monday
night or Tuesday, and may start to become negatively tilted, but
looks like it remains relatively progressive over our region,
with any impacts being primarily confined to Monday night and
Tuesday.

As for the impacts, the main one will be very light
precipitation. Because this is digging in from the NW, arriving
just behind the start of dry air advection, expect this to be
quite moisture starved. So any precipitation that we see Monday
night and Tuesday will be very light. None the less, it will be
cold enough across much of the region that there could be a few
snow flakes mixed in with rain drops especially Monday night
into early Tue morning. However, a combination of warm ground
and limited moisture means that only the southern Poconos has a
decent chance (50%) of seeing any accumulating snow, and even
there amounts are expected to be less than one inch.

Additionally, 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 /09Z MONDAY THROUGH FRIDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG,
KMIV, KACY and surrounding areas.

Today...Heavy rainfall will continue through about 12Z. MVFR to
IFR ceilings/visibilities with some potential of LIFR
especially in pockets of heaviest of rainfall this morning. E-SE
winds in the 10- 20 kt range, with higher winds at KMIV/KACY.
Low-level wind shear persists through 12Z, before tapering off
near day break. Conditions start to improve later this morning
and into the afternoon. Ceilings/visibilities improve to MVFR
and VFR as the system pulls away. This will likely occur during
the afternoon. 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
early 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 for tonight
and Monday. Heaviest rain continue through early this morning.

Rainfall totals of 2.5 to 4.5 inches are forecast across the
region with the highest amounts along and north/west of the I-95
corridor. Some locally higher amounts are probable. Rainfall
amounts were increased a bit more overall. Given that this new
rainfall will be onto saturated ground, there is a high flooding
risk and this will be enhanced especially if much of the
heavier rain falls in a shorter period of time. The highest
hourly rainfall rates are expected to occur over the next 3 to 5
hours before tapering off later this morning. We will need to
watch especially the quicker responding creeks and streams, and
some creeks/rivers in eastern Pennsylvania and northern New
Jersey are forecast to get into minor flooding. In addition,
higher rainfall rates could increase the flooding risk in urban
areas.

&&

.TIDES/COASTAL FLOODING...
A strong surge occurred during the night up Delaware Bay and along
the coast of New Jersey and Delaware. This was strongest in Delaware
Bay, however Reedy Point looks to crest just below moderate flooding
early this morning. Since it is close, we will hold onto the Coastal
Flood Warning for a while longer. Issued a Coastal Flood Advisory
for the tidal Delaware River as minor flooding is expected with the
high tide early this morning. This could be locally enhanced due to
plenty of runoff.

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, 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.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Flood Watch through this afternoon for PAZ054-055-060>062-070-
     071-101>106.
     Coastal Flood Advisory until 9 AM EST this morning for PAZ070-
     071-106.
NJ...Coastal Flood Warning until 6 AM EST early this morning for
     NJZ016-021.
     Flood Watch through this afternoon for NJZ001-007>010-012>027.
     Coastal Flood Advisory until 4 PM EST this afternoon for
     NJZ012>014-020-022>027.
     Wind Advisory until 7 AM EST this morning for NJZ013-014-020-
     022>027.
     Coastal Flood Advisory until 9 AM EST this morning for
     NJZ017>019.
DE...Coastal Flood Warning until 6 AM EST early this morning for
     DEZ001-002.
     Flood Watch through this afternoon for DEZ001>004.
     Coastal Flood Advisory until 4 PM EST this afternoon for
     DEZ003-004.
     Wind Advisory until 7 AM EST this morning for DEZ003-004.
MD...Flood Watch through this afternoon for MDZ012-015-019-020.
MARINE...Gale Warning until 6 PM EST this evening for ANZ430-431-
     450>455.

&&

SYNOPSIS...DeSilva/Johnson/RCM
NEAR TERM...DeSilva
SHORT TERM...Johnson
LONG TERM...Johnson
AVIATION...DeSilva/Johnson/RCM
MARINE...DeSilva/Johnson/RCM
HYDROLOGY...WFO PHI
TIDES/COASTAL FLOODING...Gorse
Hazardous weather outlook, Dec 17, 10:46 PM EST, 5 hours 49 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
1046 PM EST Sun Dec 17 2023

DEZ001-190346-
New Castle-
1046 PM EST Sun Dec 17 2023

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

.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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

DEZ002-190346-
Kent-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for Kent County in Delaware.

.DAY ONE...Through tonight.

Moderate 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...Monday through Saturday.

Minor coastal flooding is possible on Monday.
Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

DEZ003-190346-
Inland Sussex-
1046 PM EST Sun Dec 17 2023

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

.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.
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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

DEZ004-190346-
Delaware Beaches-
1046 PM EST Sun Dec 17 2023

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

.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.
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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

PAZ054-190346-
Carbon-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

PAZ055-190346-
Monroe-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

PAZ060-190346-
Berks-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

PAZ061-190346-
Lehigh-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

PAZ062-190346-
Northampton-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

PAZ070-190346-
Delaware-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for Delaware 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

PAZ071-190346-
Philadelphia-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for Philadelphia 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

PAZ101-190346-
Western Chester-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

PAZ102-190346-
Eastern Chester-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

PAZ103-190346-
Western Montgomery-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

PAZ104-190346-
Eastern Montgomery-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

PAZ105-190346-
Upper Bucks-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

PAZ106-190346-
Lower Bucks-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Minor coastal flooding is possible on Monday.
Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

NJZ001-190346-
Sussex-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

NJZ007-190346-
Warren-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

NJZ008-190346-
Morris-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

NJZ009-190346-
Hunterdon-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

NJZ010-190346-
Somerset-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

NJZ012-190346-
Middlesex-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for Middlesex 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.
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...Monday through Saturday.

Minor coastal flooding is possible on Monday.
Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.
Windy conditions may cause isolated instances of tree damage and
power outages on Monday.

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.

NJZ013-190346-
Western Monmouth-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for western Monmouth 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.
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...Monday through Saturday.

Minor coastal flooding is possible on Monday.
Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.
Windy conditions may cause isolated instances of tree damage and
power outages on Monday.

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.

NJZ014-190346-
Eastern Monmouth-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for eastern Monmouth 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.
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...Monday through Saturday.

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

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.

NJZ015-190346-
Mercer-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

NJZ016-190346-
Salem-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for Salem 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

NJZ017-190346-
Gloucester-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for Gloucester 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

NJZ018-190346-
Camden-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for Camden 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.
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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

NJZ019-190346-
Northwestern Burlington-
1046 PM EST Sun Dec 17 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.
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...Monday through Saturday.

Minor coastal flooding is possible on Monday.
Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

NJZ020-190346-
Ocean-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for inland 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.
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...Monday through Saturday.

Minor coastal flooding is possible on Monday.
Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.
Windy conditions may cause isolated instances of tree damage and
power outages on Monday.

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.

NJZ021-190346-
Cumberland-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for Cumberland 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.
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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

NJZ022-190346-
Atlantic-
1046 PM EST Sun Dec 17 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.
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...Monday through Saturday.

Minor coastal flooding is possible on Monday.
Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

NJZ023-190346-
Cape May-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for Cape May County excluding the
Atlantic coast 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.
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...Monday through Saturday.

Minor coastal flooding is possible on Monday.
Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

NJZ024-190346-
Atlantic Coastal Cape May-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for the Atlantic coastal portions of
Cape May 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.
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...Monday through Saturday.

Minor coastal flooding is possible on Monday.
Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.
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.

NJZ025-190346-
Coastal Atlantic-
1046 PM EST Sun Dec 17 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.
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...Monday through Saturday.

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

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.

NJZ026-190346-
Coastal Ocean-
1046 PM EST Sun Dec 17 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.
Very windy conditions may cause scattered to numerous
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...Monday through Saturday.

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

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.

NJZ027-190346-
Southeastern Burlington-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for southeastern Burlington 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.
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...Monday through Saturday.

Minor coastal flooding is possible on Monday.
Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.
Windy conditions may cause isolated instances of tree damage and
power outages on Monday.

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.

MDZ012-190346-
Kent MD-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

MDZ015-190346-
Queen Annes-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Minor coastal flooding is possible on Monday.
Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

MDZ019-190346-
Talbot-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Minor coastal flooding is possible on Monday.
Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

MDZ020-190346-
Caroline-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Minor coastal flooding is possible on Monday.
Several instances of flooding are possible on Monday,
especially in urban and poor-drainage areas and near particularly vulnerable
small creeks and streams.

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.

ANZ430-190346-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
1046 PM EST Sun Dec 17 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...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.

ANZ431-190346-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
1046 PM EST Sun Dec 17 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...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.

ANZ450-190346-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Monmouth 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...Monday through Saturday.

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

ANZ451-190346-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
1046 PM EST Sun Dec 17 2023

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Ocean 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...Monday through Saturday.

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

ANZ452-190346-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

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

ANZ453-190346-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

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

ANZ454-190346-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

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

ANZ455-190346-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
1046 PM EST Sun Dec 17 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...Monday through Saturday.

Storm-force winds and/or very high seas are expected on Monday.
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, 4:10 AM EST, 25 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
410 AM EST Mon Dec 18 2023

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

0330 AM     Non-Tstm Wnd Dmg Seaside Heights         39.95N 74.07W
12/18/2023                   Ocean              NJ   Public

            Reports of some downed power lines, street
            signs and tree branches.

&&

Gorse
Local storm report, Dec 18, 4:26 AM EST, 9 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
426 AM EST Mon Dec 18 2023

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

0230 AM     Flood            1 NNE Upper Providence  39.94N 75.38W
12/18/2023                   Delaware           PA   Public

            Flooding on Rose Tree Road.

&&

Gorse
Local storm report, Dec 18, 4:28 AM EST, 7 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
428 AM EST Mon Dec 18 2023

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

0400 AM     Flood            Georgetown              38.69N 75.39W
12/18/2023                   Sussex             DE   Public

            Several residential yards are flooded in
            Georgetown. Rainfall totals just over 4
            inches.

&&

Gorse
Local storm report, Dec 18, 4:31 AM EST, 4 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
431 AM EST Mon Dec 18 2023

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

0251 AM     Flood            1 SE Ridley Park        39.87N 75.31W
12/18/2023                   Delaware           PA   Dept of Highways

            Flooding on I-95.

&&

Gorse
Local storm report, Dec 18, 4:33 AM EST, 2 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
433 AM EST Mon Dec 18 2023

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

0419 AM     Flood            1 NW Point Breeze       39.94N 75.20W
12/18/2023                   Philadelphia       PA   Dept of Highways

            Flooding on University Avenue near 34th
            Street.

&&

Gorse
Local storm report, Dec 18, 4:34 AM EST, 1 minute before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
434 AM EST Mon Dec 18 2023

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

0347 AM     Flood            1 N Belmont Hills       40.03N 75.24W
12/18/2023                   Montgomery         PA   Dept of Highways

            Flooding in I-76.

&&

Gorse

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, 4:41 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, 10:06 AM ESTRiver Flood WarningPHILehigh, Northampton12 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.