Freeze Watch 3, NWS Philadelphia/Mount Holly

Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA

102 
WWUS71 KPHI 190105
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
905 PM EDT Sat Apr 18 2026

NJZ001-007>010-012-013-015>023-027-PAZ054-055-060>062-101>106-190900-
/O.CON.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Western
Monmouth-Mercer-Salem-Gloucester-Camden-Northwestern Burlington-
Ocean-Cumberland-Atlantic-Cape May-Southeastern Burlington-Carbon-
Monroe-Berks-Lehigh-Northampton-Western Chester-Eastern Chester-
Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Hammonton, Collegeville, Jackson,
Perkasie, Newton, Pottstown, Freehold, Millville, Cape May Court
House, Easton, Kennett Square, Glassboro, Bethlehem, Doylestown,
Lansdale, Somerville, Morristown, Cherry Hill, Reading,
Flemington, Norristown, Washington, Stroudsburg, Mount Holly,
Allentown, New Brunswick, West Chester, Trenton, Morrisville,
Oxford, Chalfont, Jim Thorpe, Camden, Moorestown, Wharton State
Forest, Pennsville, and Honey Brook
905 PM EDT Sat Apr 18 2026

...FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH 
TUESDAY MORNING...

* WHAT...Sub-freezing temperatures with lows as cold as the mid-20s.

* WHERE...Portions of central, northern, northwest, and southern New 
  Jersey and east central, northeast, and southeast Pennsylvania.

* WHEN...From late Monday night through Tuesday morning.

* IMPACTS...Frost and freeze conditions could kill crops and other 
  sensitive vegetation.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Watch means sub-freezing temperatures are possible. These 
conditions could kill crops and other sensitive vegetation.

&&

$$

MJL

335 
WWUS71 KPHI 190511
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
111 AM EDT Sun Apr 19 2026

PAZ054-055-192000-
/O.NEW.KPHI.FZ.W.0003.260420T0300Z-260420T1400Z/
/O.CON.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
Carbon-Monroe-
Including the cities of Stroudsburg and Jim Thorpe
111 AM EDT Sun Apr 19 2026

...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 10 AM EDT 
MONDAY...
...FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH 
TUESDAY MORNING...

* WHAT...For the Freeze Warning, sub-freezing temperatures as low as 
  25 expected. For the Freeze Watch, sub-freezing temperatures as 
  low as 19 possible.

* WHERE...Carbon and Monroe Counties.

* WHEN...For the Freeze Warning, from 11 PM this evening to 10 AM 
  EDT Monday. For the Freeze Watch, from late Monday night through 
  Tuesday morning.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

DEZ001-PAZ070-071-192000-
/O.EXA.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
New Castle-Delaware-Philadelphia-
Including the cities of Media, Philadelphia, and Wilmington
111 AM EDT Sun Apr 19 2026

...FREEZE WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY 
MORNING...

* WHAT...Sub-freezing temperatures as low as 30 possible, mainly 
  outside of the urban city centers.

* WHERE...In Delaware, New Castle County. In Pennsylvania, Delaware 
  and Philadelphia Counties.

* WHEN...From late Monday night through Tuesday morning.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

DEZ002-003-MDZ012-015-019-020-192000-
/O.EXA.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline-
Including the cities of Centreville, Denton, Georgetown, Dover,
Chestertown, and Easton
111 AM EDT Sun Apr 19 2026

...FREEZE WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY 
MORNING...

* WHAT...Sub-freezing temperatures as low as 30 possible.

* WHERE...In Delaware, Kent and Inland Sussex Counties. In Maryland, 
  Caroline, Kent MD, Queen Annes, and Talbot Counties.

* WHEN...From late Monday night through Tuesday morning.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

NJZ001-007>010-012-013-015>023-027-PAZ060>062-101>106-192000-
/O.CON.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Western
Monmouth-Mercer-Salem-Gloucester-Camden-Northwestern Burlington-
Ocean-Cumberland-Atlantic-Cape May-Southeastern Burlington-Berks-
Lehigh-Northampton-Western Chester-Eastern Chester-Western
Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Bethlehem, Somerville, Moorestown, West
Chester, Jackson, Flemington, Mount Holly, Newton, Morristown,
Lansdale, Wharton State Forest, Oxford, Easton, Camden,
Collegeville, Pottstown, New Brunswick, Morrisville, Washington,
Freehold, Reading, Trenton, Norristown, Glassboro, Pennsville,
Perkasie, Allentown, Cape May Court House, Cherry Hill, Honey
Brook, Hammonton, Kennett Square, Millville, Chalfont, and
Doylestown
111 AM EDT Sun Apr 19 2026

...FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH 
TUESDAY MORNING...

* WHAT...Sub-freezing temperatures as low as 26 possible.

* WHERE...Portions of central, northern, northwest, and southern New 
  Jersey and east central and southeast Pennsylvania.

* WHEN...From late Monday night through Tuesday morning.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

Johnson/Gorse

168 
WWUS71 KPHI 191746
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
146 PM EDT Sun Apr 19 2026

NJZ001-200800-
/O.EXA.KPHI.FZ.W.0003.260420T0300Z-260420T1400Z/
/O.CON.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
Sussex-
Including the cities of Newton
146 PM EDT Sun Apr 19 2026

...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 10 AM EDT 
MONDAY...
...FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH 
TUESDAY MORNING...

* WHAT...For the Freeze Warning, sub-freezing temperatures as low as 
  31 expected. For the Freeze Watch, sub-freezing temperatures as 
  low as 21 possible.

* WHERE...Sussex County.

* WHEN...For the Freeze Warning, from 11 PM this evening to 10 AM 
  EDT Monday. For the Freeze Watch, from late Monday night through 
  Tuesday morning.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

PAZ054-055-200800-
/O.CON.KPHI.FZ.W.0003.260420T0300Z-260420T1400Z/
/O.CON.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
Carbon-Monroe-
Including the cities of Jim Thorpe and Stroudsburg
146 PM EDT Sun Apr 19 2026

...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 10 AM 
EDT MONDAY...
...FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH 
TUESDAY MORNING...

* WHAT...For the Freeze Warning, sub-freezing temperatures as low as 
  24 expected. For the Freeze Watch, sub-freezing temperatures as 
  low as 19 possible.

* WHERE...Carbon and Monroe Counties.

* WHEN...For the Freeze Warning, from 11 PM this evening to 10 AM 
  EDT Monday. For the Freeze Watch, from late Monday night through 
  Tuesday morning.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

NJZ007>010-PAZ062-200800-
/O.NEW.KPHI.FR.Y.0002.260420T0600Z-260420T1200Z/
/O.CON.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
Warren-Morris-Hunterdon-Somerset-Northampton-
Including the cities of Somerville, Easton, Washington,
Bethlehem, Morristown, and Flemington
146 PM EDT Sun Apr 19 2026

...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT MONDAY...
...FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH 
TUESDAY MORNING...

* WHAT...For the Frost Advisory, temperatures as low as 34 will 
  result in frost formation. For the Freeze Watch, sub-freezing 
  temperatures as low as 24 possible.

* WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon 
  Counties. In Pennsylvania, Northampton County.

* WHEN...For the Frost Advisory, from 2 AM to 8 AM EDT Monday. For 
  the Freeze Watch, from late Monday night through Tuesday morning.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing. Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

DEZ001-PAZ070-071-200800-
/O.CON.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
New Castle-Delaware-Philadelphia-
Including the cities of Wilmington, Philadelphia, and Media
146 PM EDT Sun Apr 19 2026

...FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH 
TUESDAY MORNING...

* WHAT...Sub-freezing temperatures as low as 27 possible.

* WHERE...In Delaware, New Castle County. In Pennsylvania, Delaware 
  and Philadelphia Counties.

* WHEN...From late Monday night through Tuesday morning.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

DEZ002-003-MDZ012-015-019-020-200800-
/O.CON.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline-
Including the cities of Dover, Easton, Georgetown, Chestertown,
Denton, and Centreville
146 PM EDT Sun Apr 19 2026

...FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH 
TUESDAY MORNING...

* WHAT...Sub-freezing temperatures as low as 29 possible.

* WHERE...In Delaware, Kent and Inland Sussex Counties. In Maryland, 
  Caroline, Kent MD, Queen Annes, and Talbot Counties.

* WHEN...From late Monday night through Tuesday morning.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

NJZ012-013-015>023-027-PAZ060-061-101>106-200800-
/O.CON.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
Middlesex-Western Monmouth-Mercer-Salem-Gloucester-Camden-
Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May-
Southeastern Burlington-Berks-Lehigh-Western Chester-Eastern
Chester-Western Montgomery-Eastern Montgomery-Upper Bucks-Lower
Bucks-
Including the cities of Morrisville, Pottstown, Oxford, Jackson,
Chalfont, Doylestown, Glassboro, Perkasie, Cape May Court House,
Reading, Millville, Honey Brook, West Chester, New Brunswick,
Freehold, Camden, Norristown, Kennett Square, Moorestown, Mount
Holly, Hammonton, Pennsville, Allentown, Cherry Hill,
Collegeville, Lansdale, Trenton, and Wharton State Forest
146 PM EDT Sun Apr 19 2026

...FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH 
TUESDAY MORNING...

* WHAT...Sub-freezing temperatures as low as 25 possible.

* WHERE...Portions of central, northern, and southern New Jersey and 
  east central and southeast Pennsylvania.

* WHEN...From late Monday night through Tuesday morning.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

Hoeflich

575 
WWUS71 KPHI 200625
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
225 AM EDT Mon Apr 20 2026

NJZ001-PAZ054-055-202000-
/O.UPG.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
/O.NEW.KPHI.FZ.W.0004.260421T0400Z-260421T1300Z/
/O.CON.KPHI.FZ.W.0003.000000T0000Z-260420T1400Z/
Sussex-Carbon-Monroe-
Including the cities of Jim Thorpe, Newton, and Stroudsburg
225 AM EDT Mon Apr 20 2026

...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT THIS MORNING...
...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT 
TUESDAY...

* WHAT...For the first Freeze Warning, sub-freezing temperatures as 
  low as 26. For the second Freeze Warning, sub-freezing 
  temperatures as low as 22 expected.

* WHERE...In New Jersey, Sussex County. In Pennsylvania, Carbon and 
  Monroe Counties.

* WHEN...For the first Freeze Warning, until 10 AM EDT this morning. 
  For the second Freeze Warning, from midnight tonight to 9 AM EDT 
  Tuesday.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

NJZ007>010-PAZ062-202000-
/O.UPG.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
/O.NEW.KPHI.FZ.W.0004.260421T0400Z-260421T1300Z/
/O.CON.KPHI.FR.Y.0002.000000T0000Z-260420T1200Z/
Warren-Morris-Hunterdon-Somerset-Northampton-
Including the cities of Easton, Morristown, Washington,
Bethlehem, Flemington, and Somerville
225 AM EDT Mon Apr 20 2026

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING...
...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT 
TUESDAY...

* WHAT...For the Frost Advisory, temperatures as low as 33 will 
  result in frost formation. For the Freeze Warning, sub-freezing 
  temperatures as low as 26 expected.

* WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon 
  Counties. In Pennsylvania, Northampton County.

* WHEN...For the Frost Advisory, until 8 AM EDT this morning. For 
  the Freeze Warning, from midnight tonight to 9 AM EDT Tuesday.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing. Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

DEZ001-PAZ070-071-202000-
/O.UPG.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
/O.NEW.KPHI.FZ.W.0004.260421T0400Z-260421T1300Z/
New Castle-Delaware-Philadelphia-
Including the cities of Media, Philadelphia, and Wilmington
225 AM EDT Mon Apr 20 2026

...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT 
TUESDAY...

* WHAT...Sub-freezing temperatures as low as 27 expected.

* WHERE...In Delaware, New Castle County. In Pennsylvania, Delaware 
  and Philadelphia Counties.

* WHEN...From midnight tonight to 9 AM EDT Tuesday.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

DEZ002-003-MDZ012-015-019-020-202000-
/O.UPG.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
/O.NEW.KPHI.FZ.W.0004.260421T0400Z-260421T1300Z/
Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline-
Including the cities of Georgetown, Chestertown, Easton, Denton,
Dover, and Centreville
225 AM EDT Mon Apr 20 2026

...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT 
TUESDAY...

* WHAT...Sub-freezing temperatures as low as 29 expected.

* WHERE...In Delaware, Kent and Inland Sussex Counties. In Maryland, 
  Caroline, Kent MD, Queen Annes, and Talbot Counties.

* WHEN...From midnight tonight to 9 AM EDT Tuesday.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

NJZ012-013-015>023-027-PAZ060-061-101>106-202000-
/O.UPG.KPHI.FZ.A.0003.260421T0400Z-260421T1300Z/
/O.NEW.KPHI.FZ.W.0004.260421T0400Z-260421T1300Z/
Middlesex-Western Monmouth-Mercer-Salem-Gloucester-Camden-
Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May-
Southeastern Burlington-Berks-Lehigh-Western Chester-Eastern
Chester-Western Montgomery-Eastern Montgomery-Upper Bucks-Lower
Bucks-
Including the cities of Perkasie, Oxford, West Chester,
Hammonton, Wharton State Forest, Lansdale, Mount Holly,
Millville, Jackson, Doylestown, Honey Brook, Cape May Court
House, Allentown, Camden, Glassboro, Kennett Square, Cherry Hill,
Morrisville, Trenton, Chalfont, Pennsville, Moorestown,
Pottstown, Collegeville, Freehold, New Brunswick, Reading, and
Norristown
225 AM EDT Mon Apr 20 2026

...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT 
TUESDAY...

* WHAT...Sub-freezing temperatures as low as 26 expected.

* WHERE...Portions of central, northern, and southern New Jersey and 
  east central and southeast Pennsylvania.

* WHEN...From midnight tonight to 9 AM EDT Tuesday.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

Guzzo

Area Forecast Discussion
National Weather Service Mount Holly NJ
833 AM EDT Sat Apr 18 2026

.WHAT HAS CHANGED...
Dense Fog Advisory issued for the coastal waters from Mansquan
Inlet NJ to Fenwick Island DE out to 60nmi through 4PM.

&&

.KEY MESSAGES...
1. A strong cold front will bring rain showers to the area
Tonight into Sunday.

2. Widespread minor tidal flooding along the Atlantic coasts of New
Jersey and Delaware, Delaware Bay, and the tidal Delaware River with
tonight's high tide.

3. Much colder air early next week with frost/freeze conditions,
followed by a return to above average temperatures later in the
week.

&&

.DISCUSSION...
KEY MESSAGE 1...A strong cold front will bring rain showers to
the area Saturday night into Sunday.

A cold front will move into the area late Tonight and should
move off the coast by mid day Sunday. This front, combined with
the surface low sliding along the front, will provide enough
lift for widespread rain across the area. Chances for measurable
rain range from 70 to 80 percent. That being said, this is
unlikely to result in substantial rain amounts. Storm (shower)
motions should be relatively fast, and the front itself has
trended faster. Thus, rain amounts are forecast to be a few
hundredths of an inch up to one half an inch.

In terms of other hazards, instability, especially surface or
low level based instability is forecast to be very limited (less
than 50 J/kg of CAPE). Thus the risk for other thunderstorm
hazards is very low. That being said, there is some very
elevated instability (for parcels above 850 mb), especially west
of the fall line, so can't rule out a rumble of thunder or gusty
winds.

Though this is a strong cold front, the temperature difference
won't feel as dramatic as it could, thanks to a marine layer
staying mostly in place over our region today. None the less,
for most inland areas, temperatures on Sunday will be 5 to 20
degrees colder as compared to Saturday; highs on Saturday will
range from the mid 50s to mid 70s, compared with highs on Sunday
ranging from the mid 40s to mid 60s.

KEY MESSAGE 2...Widespread minor tidal flooding along the Atlantic
coasts of New Jersey and Delaware, Delaware Bay, and the tidal
Delaware River with tonight's high tide.

A Coastal Flood Advisory remains in effect for the Atlantic coasts
of New Jersey and Delaware, as well as along Delaware Bay and up the
tidal Delaware River for the high tide cycles tonight.

High astronomical tides associated with the New Moon that occurred
yesterday and onshore flow today and tonight is forecast to result
in widespread minor tidal flooding with tonight's high tide along
the Atlantic coasts of New Jersey and Delaware, Delaware Bay, and
the tidal Delaware River. A northeast to east wind will become
southeasterly by later today into this evening, with surge values
increasing to near 1 foot above normal. This will put most tidal
areas into minor flood stage during high tide tonight.

A modest offshore wind will develop in the wake of a cold front on
Sunday, which should limit the risk of any additional flooding for
Sunday night's high tide.

No tidal flooding is forecast for our portion of the Eastern Shore
of Chesapeake Bay.

KEY MESSAGE 3...Much colder air early next week with frost/freeze
conditions, followed by a return to above average temperatures later
in the week.

As a strong upper-level trough pivots across the East Sunday night
and Monday, surface high pressure with a much colder air mass with
it will be in place. The high itself will settle over our area
Monday night into Tuesday morning before shifting offshore. A breeze
will occur Sunday night and Monday with a lingering pressure
gradient ahead of surface high pressure. While it will be much
colder Sunday night, just enough wind may limit frost formation.
Much lighter to nearly calm wind Monday night along with a mostly
clear sky should result in more efficient radiational cooling
conditions. As a result, widespread frost and/or freeze conditions
are probable early Tuesday morning. Frost early Tuesday morning
could be somewhat limited given a much drier low-level air mass in
place, however areas outside of the larger cities and away from the
immediate coast area forecast to drop to and below freezing. The
recent excessive warmth has quickly started the vegetation sooner,
therefore all of our counties are now active regarding the growing
season.

High temperatures both Monday and Tuesday are forecast to be in the
40s and 50s across the region, which is several degrees below
average. A return, southerly, flow becomes established during
Tuesday and it continues into Wednesday. This along with an increase
in warm air advection and rising heights will result in temperatures
climbing back above average Wednesday through Friday. A warm front
may arrive at the end of the week. As of now, the chance for a much
needed widespread rainfall Monday through Friday of next week looks
to be very low.

&&

.AVIATION /12Z SATURDAY THROUGH WEDNESDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG,
KMIV, KACY and surrounding areas.

Today...The low clouds are likely to clear from KRDG the
earliest, most other sites by 15Z. At KACY, there is a 40%
chance that the low clouds (at least MVFR) persist through the
day. For the other TAF sites, once the low clouds dissipate,
conditions should stay VFR through at least 21Z. After 21Z,
another low cloud deck may start encroaching on the area, though
this is more likely not to move back in until after 00Z. Winds
have already begun to shift to southeasterly, and should
generally favor that direction, with wind speeds around 10 kt or
less.

Tonight...Another low cloud deck will move over the region, with
widespread MVFR, and localized IFR conditions expected.
Additionally, some visibility restrictions to MVFR with SHRA is
possible, particularly after 06Z. Winds should generally favor
southeasterly through most of the night, with wind speeds of 5
to 15 kt.

Outlook...

Sunday...Widespread MVFR and localized IFR conditions continue
(mostly due to low clouds). SHRA are likely, but an isolated
thunderstorm cannot be ruled out. Expect an abrupt shift to
northwesterly winds before 15Z, with a subsequent increase in
wind speeds (gusts up to 25 kt) as well.

Sunday night through Tuesday...VFR. West-northwest wind gusts to
around 20 knots Monday, quickly diminishing Monday night.

Wednesday...Some MVFR conditions are possible at times.

&&

.MARINE...
Through Tonight...Winds and seas should stay below Small Craft
Advisory criteria. A large area of fog has been impacting
the NJ and DE coastal waters early this morning, with
visibilities less than one nautical mile roughly from Manasquan
Inlet NJ to the MD/DE border. Expect the fog to continue into
the afternoon.

Sunday...Winds will shift to northwesterly and increase quickly
behind a cold front Sunday Morning. Expect SCA conditions on all
waters through the day time. There is a 40% chance that wind
speeds exceed gale criteria for a brief period behind the front,
particularly at the mouth of the Delaware Bay. However, for now,
widespread SCA looks more likely, so have issued an SCA for the
coastal waters out to 20 nmi. For the outer marine areas (20 to
60 nmi), winds are likely to stay below gale criteria.

Outlook...

Sunday night through Wednesday...The conditions are anticipated to
be below Small Craft Advisory criteria.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Coastal Flood Advisory from 1 AM to 6 AM EDT Sunday for PAZ070-
     071-106.
NJ...Coastal Flood Advisory from 11 PM this evening to 3 AM EDT
     Sunday for NJZ016.
     Coastal Flood Advisory from 8 PM this evening to 2 AM EDT
     Sunday for NJZ012>014-020>027.
     Coastal Flood Advisory from 1 AM to 6 AM EDT Sunday for
     NJZ017>019.
DE...Coastal Flood Advisory from 11 PM this evening to 3 AM EDT
     Sunday for DEZ001.
     Coastal Flood Advisory from 8 PM this evening to 2 AM EDT
     Sunday for DEZ002>004.
MD...None.
MARINE...Small Craft Advisory from 8 AM to 6 PM EDT Sunday for ANZ430-
     431-450>455.
     Dense Fog Advisory until 4 PM EDT this afternoon for ANZ431-
     451>455-481>483-485.

&&

DISCUSSION...Gorse/Johnson
AVIATION...Gorse/Johnson
MARINE...Franklin/Gorse/Johnson

Hazardous Weather Outlook
National Weather Service Mount Holly NJ
505 AM EDT Sat Apr 18 2026

MDZ012-015-019-020-190915-
Kent MD-Queen Annes-Talbot-Caroline-
505 AM EDT Sat Apr 18 2026

This Hazardous Weather Outlook is for northeast Maryland.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.