Small Craft Advisory 64, NWS Philadelphia/Mount Holly

937 
WHUS71 KPHI 211847
MWWPHI

URGENT - MARINE WEATHER MESSAGE
National Weather Service Mount Holly NJ
247 PM EDT Sun Jun 21 2026

ANZ450>455-220900-
/O.CON.KPHI.SC.Y.0064.260622T1600Z-260623T1000Z/
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 NM-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out
20 NM-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out
20 NM-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 NM-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 NM-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 NM-
247 PM EDT Sun Jun 21 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON MONDAY TO
6 AM EDT TUESDAY...

* WHAT...South winds 15 to 25 kt with gusts up to 30 kt and seas 4 
  to 6 ft expected.

* WHERE...Portions of Atlantic coastal waters. 

* WHEN...From noon Monday to 6 AM EDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ430-431-220900-
/O.CON.KPHI.SC.Y.0064.260622T1900Z-260623T0400Z/
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
247 PM EDT Sun Jun 21 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM MONDAY TO
MIDNIGHT EDT MONDAY NIGHT...

* WHAT...South winds 10 to 20 kt with gusts up to 30 kt and 
  choppy waters expected.

* WHERE...Delaware Bay waters north of East Point NJ to 
  Slaughter Beach DE and Delaware Bay waters south of East Point 
  NJ to Slaughter Beach DE.

* WHEN...From 3 PM Monday to midnight EDT Monday night.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

716 
WHUS71 KPHI 220614
MWWPHI

URGENT - MARINE WEATHER MESSAGE
National Weather Service Mount Holly NJ
214 AM EDT Mon Jun 22 2026

ANZ450>455-231000-
/O.CON.KPHI.SC.Y.0064.260622T1600Z-260623T1000Z/
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 NM-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out
20 NM-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out
20 NM-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 NM-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 NM-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 NM-
214 AM EDT Mon Jun 22 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 6 AM
EDT TUESDAY...

* WHAT...South winds 10 to 20 kt with gusts up to 25 kt and seas 
  3 to 5 ft expected.

* WHERE...Portions of Atlantic coastal waters. 

* WHEN...From noon today to 6 AM EDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ430-431-230400-
/O.CON.KPHI.SC.Y.0064.260622T1900Z-260623T0400Z/
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
214 AM EDT Mon Jun 22 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO MIDNIGHT EDT TONIGHT...

* WHAT...South winds 10 to 20 kt with gusts up to 25 kt and 
  choppy waters expected.

* WHERE...Delaware Bay waters north of East Point NJ to 
  Slaughter Beach DE and Delaware Bay waters south of East Point 
  NJ to Slaughter Beach DE.

* WHEN...From 3 PM this afternoon to midnight EDT tonight.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

962 
WHUS71 KPHI 221828
MWWPHI

URGENT - MARINE WEATHER MESSAGE
National Weather Service Mount Holly NJ
228 PM EDT Mon Jun 22 2026

ANZ450>455-230900-
/O.CON.KPHI.SC.Y.0064.000000T0000Z-260623T1000Z/
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 NM-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out
20 NM-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out
20 NM-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 NM-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 NM-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 NM-
228 PM EDT Mon Jun 22 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT
TUESDAY...

* WHAT...South winds 10 to 20 kt with gusts up to 30 kt and seas 
  3 to 6 ft.

* WHERE...Portions of Atlantic coastal waters. 

* WHEN...Until 6 AM EDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ430-431-230400-
/O.CON.KPHI.SC.Y.0064.260622T1900Z-260623T0400Z/
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
228 PM EDT Mon Jun 22 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT
TONIGHT...

* WHAT...South winds 10 to 20 kt with gusts up to 30 kt and 
  choppy waters expected.

* WHERE...Delaware Bay waters north of East Point NJ to 
  Slaughter Beach DE and Delaware Bay waters south of East Point 
  NJ to Slaughter Beach DE.

* WHEN...Until midnight EDT tonight.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

904 
WHUS71 KPHI 230359
MWWPHI

URGENT - MARINE WEATHER MESSAGE
National Weather Service Mount Holly NJ
1159 PM EDT Mon Jun 22 2026

ANZ430-431-230500-
/O.EXP.KPHI.SC.Y.0064.000000T0000Z-260623T0400Z/
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
1159 PM EDT Mon Jun 22 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT MIDNIGHT EDT TONIGHT...

Winds are diminishing.

$$

ANZ450>455-231000-
/O.CON.KPHI.SC.Y.0064.000000T0000Z-260623T1000Z/
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 NM-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out
20 NM-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out
20 NM-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 NM-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 NM-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 NM-
1159 PM EDT Mon Jun 22 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT
TUESDAY...

* WHAT...South winds 10 to 15 kt.

* WHERE...Portions of Atlantic coastal waters. 

* WHEN...Until 6 AM EDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

013 
WHUS71 KPHI 230609
MWWPHI

URGENT - MARINE WEATHER MESSAGE
National Weather Service Mount Holly NJ
209 AM EDT Tue Jun 23 2026

ANZ450>455-230715-
/O.CAN.KPHI.SC.Y.0064.000000T0000Z-260623T1000Z/
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 NM-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out
20 NM-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out
20 NM-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 NM-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 NM-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 NM-
209 AM EDT Tue Jun 23 2026

...SMALL CRAFT ADVISORY IS CANCELLED...

Winds and seas have diminished.

$$

Area Forecast Discussion
National Weather Service Mount Holly NJ
151 AM EDT Sun Jun 21 2026

.WHAT HAS CHANGED...
Updated the aviation section for the 06z TAFs.

&&

.KEY MESSAGES...
1. Mostly tranquil tonight and Sunday.

2. A system moves in Monday into Monday night bringing the threat
for heavy rainfall with an associated flooding risk along with at
least some threat for severe weather.

&&

.DISCUSSION...
KEY MESSAGE 1...Mostly tranquil tonight and Sunday.

High pressure well to the south/west across the lower Ohio
Valley will continue to weaken tonight and Sunday. It will
provide mostly dry weather and comfortable temperatures tonight
and Sunday. There are a few weak shortwaves in the west to
northwest flow aloft and these are resulting in some lingering
showers across parts of eastern Pennsylvania early this evening.
A lingering shower or a few sprinkles even across parts of New
Jersey. A few additional showers or a low-topped thunderstorm
should be around the northern areas again during Sunday
afternoon.

KEY MESSAGE 2...A system moves in Monday into Monday night bringing
the threat for heavy rainfall with an associated flooding risk along
with at least some threat for severe weather.

Forecast guidance continues to indicate an unsettled start to the
week with low pressure impacting the area but there remain differences
in the details of how all this will play out. The main question continues
to be the exact track of the low, which will have notable consequence
on specific impacts.

The main takeaway though is that is that most areas will see at least
some showers and thunderstorms Monday afternoon into the evening,
potentially even lasting into the overnight. Consensus guidance
shows PWAT values (1.75- 2.00") near the climatological maxima,
setting up the risk for heavy rainfall. NBM probabilities for 1+
inches of rain with the system are in the 60-80 percent range for
areas along and north of the I-95 corridor and generally in the
25 to 50 percent range farther south. For 2+ inches, these probabilities
are as high as 30 to 50 percent over NE PA into NW NJ, generally
around 10 to 25 percent near the I-95 corridor, and less than
10 percent farther south. It is worth noting though that forecast
models notoriously struggle with QPF, especially when it involves
convection. Looking at the different deterministic models, there
are indications that some parts of our area could see 2-3+ inches
of rain but the question is not just if this occurs but if so, where.
If the low tracks farther north, this would tend to keep the heaviest
rain generally favored for NE PA into NW NJ with more of a severe
weather threat south of these areas. However a track farther south
near Delmarva / SE PA / southern NJ could unfortunately mean that
the heaviest rain would be targeted near the I-95 corridor. We're
still in a region-wide drought though so that could mitigate the
flood threat some. At this time the Weather Prediction Center
has areas from the I-95 corridor northward in a SLIGHT risk
(level 2 out of 4) for excessive rainfall meaning scattered
instances of flash flooding will be possible. Farther south, the
risk is MARGINAL (level 1 out of 4) meaning any flash flooding
will be more isolated if it occurs. The Storm Prediction Center
has added a SLIGHT risk (level 2 out of 5) for areas south of
Philadelphia with a MARGINAL risk (level 1 out of 5) for areas
north of there regarding the potential for severe thunderstorms.
As of now, damaging wind gusts are the primary threat however
will need to watch the track of the low and warm front as shear
profiles will be stronger near it, although instability is
still more uncertain.

In terms of timing, the trend is for the system to be a bit slower
meaning showers/storms may not really move in until the afternoon
but would linger through the evening and potentially overnight as
well. The severe weather threat should be diminishing through the
evening but the flood thread may last into the overnight.

Tuesday now looks like it could see some additional showers and
storms, more scattered in nature, due to the system's slower movement
with a final piece of the upper level trough moving through. This
should be focused near and S/E of the urban corridor with the severe
weather and flash flooding threat looking low by this time.

&&

.AVIATION /06Z SUNDAY THROUGH THURSDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

Thru 12Z this morning...VFR. A few lingering showers mainly in
the vicinity of KPNE/KTTN. West-northwest winds around 5 knots
or light and variable. Moderate confidence.

Today and tonight...VFR. A shower possible during the afternoon,
best chance at KABE. West-northwest winds around 10 knots with
some gusts 15-20 knots. Winds may become west or even west-
southwest during the afternoon mainly at KACY. Gusts diminish in
the evening and winds likely go light/variable for a time
overnight before switching easterly toward morning. Moderate
confidence.

Outlook...

Monday and Monday night...Sub-VFR conditions with showers and some
thunderstorms likely mainly for the afternoon and evening periods.

Tuesday...Scattered showers/storms could bring brief restrictions to
the I-95 TAF sites and points S/E of there. VFR should prevail
farther north.

Wednesday...VFR. No significant weather.

Thursday...Chances for shower/storms return (30 to 50 percent
chances) and these could bring brief restrictions.

&&

.MARINE...
The Small Craft Advisory was taken down as gusts have decreased
back below 25 kts at the northern NJ marine zones. Seas at the
adjacent buoy 44025 reached 5 ft earlier but are back to 4 ft
attm. Mostly fair weather expected tonight and Sunday. A brief
shower possible.

Outlook...

Sunday night...No marine headlines expected.

Monday through Monday night...SCA conditions expected with southerly
wind gusts increasing to around 30 kt with seas 4 to 7 feet.

Tuesday...SCA conditions could linger early.

Wednesday through Thursday...Sub SCA conditions.

Rip Currents...

For Sunday, westerly winds diminish to around 10 mph, becoming
southwesterly Sunday night. Onshore swells will remain weak
around 1 to 2 feet with a 7 second period. Breaking waves in the
surf zone will be around 1 foot or less. Therefore, a LOW risk
for the development of dangerous rip currents is forecast for
all beaches on Sunday.

For Monday, south-southeasterly winds will increase to around
15-20 mph. South-southeasterly onshore swells will increase to
around 2 to 3 feet with a 6 second period. Breaking waves in the
surf zone will generally be 1 to 3 feet. There, a MODERATE risk
for the development of dangerous rip currents is forecast for
all beaches except Delaware Beaches where the breaking waves in
the surf zone will generally be 1 to 2 feet that will lead to a
LOW risk for development of dangerous rip currents.

For specific beach forecasts, visit weather.gov/beach/phi

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...None.

&&

DISCUSSION...Fitzsimmons/Gorse/OHara
AVIATION...Fitzsimmons/Gorse/OHara/RCM
MARINE...Fitzsimmons/MJL

Hazardous Weather Outlook
National Weather Service Mount Holly NJ
505 AM EDT Sat Jun 20 2026

MDZ012-015-019-020-210915-
Kent MD-Queen Annes-Talbot-Caroline-
505 AM EDT Sat Jun 20 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.