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United States Warnings, Watches, And Advisories Coastal Flood Advisory
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Coastal Flood Advisory
In effect:
Saturday, Apr 18 2026 11:00 PM EDT – Sunday, Apr 19 2026 2:00 AM EDT
Issued by NWS Upton NY
COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 11 PM SATURDAY TO 2 AM EDT SUNDAY
What:
Up to one half foot of inundation above ground level
expected in vulnerable areas near the waterfront and shoreline.
Up to one half foot of inundation above ground level
expected in vulnerable areas near the waterfront and shoreline.
Where:
Northwest Suffolk, Northern Queens and Northern Nassau
Counties.
Northwest Suffolk, Northern Queens and Northern Nassau
Counties.
When:
From 11 PM Saturday to 2 AM EDT Sunday.
From 11 PM Saturday to 2 AM EDT Sunday.
Impacts:
Minor flooding in the more vulnerable locations near
the waterfront and shoreline. Some roads and low lying
properties including parking lots, parks, lawns, and homes and
businesses with basements near the waterfront will experience
minor flooding.
Minor flooding in the more vulnerable locations near
the waterfront and shoreline. Some roads and low lying
properties including parking lots, parks, lawns, and homes and
businesses with basements near the waterfront will experience
minor flooding.
Instructions:
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Areas Impacted:
Northwest Suffolk
Northern Queens
Northern Nassau
Coastal Flood Advisory
In effect:
Saturday, Apr 18 2026 8:00 PM EDT – Sunday, Apr 19 2026 12:00 AM EDT
Issued by NWS Upton NY
COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 8 PM SATURDAY TO MIDNIGHT EDT SATURDAY NIGHT... ...COASTAL FLOOD STATEMENT HAS EXPIRED
What:
Up to one foot of inundation above ground level
expected in vulnerable areas near the waterfront and shoreline.
Up to one foot of inundation above ground level
expected in vulnerable areas near the waterfront and shoreline.
Where:
Southern Queens and Southern Nassau Counties.
Southern Queens and Southern Nassau Counties.
When:
For the Coastal Flood Advisory, from 8 PM Saturday to
midnight EDT Saturday night.
For the Coastal Flood Advisory, from 8 PM Saturday to
midnight EDT Saturday night.
Impacts:
Widespread flooding of vulnerable areas near the
waterfront and shoreline, including roads, parking lots, parks,
lawns, and homes and businesses with basements near the
waterfront. Road closures are possible, and vehicles parked
in vulnerable areas near the waterfront could experience
flooded.
Widespread flooding of vulnerable areas near the
waterfront and shoreline, including roads, parking lots, parks,
lawns, and homes and businesses with basements near the
waterfront. Road closures are possible, and vehicles parked
in vulnerable areas near the waterfront could experience
flooded.
Additional Details:
Moderate coastal flood benchmarks may be
approached for the Saturday evening high tide in Southern Nassau.
Additional minor flooding is possible for the Sunday evening
high tide.
Moderate coastal flood benchmarks may be
approached for the Saturday evening high tide in Southern Nassau.
Additional minor flooding is possible for the Sunday evening
high tide.
Instructions:
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Areas Impacted:
Southern Queens
Southern Nassau
Coastal Flood Advisory
In effect:
Saturday, Apr 18 2026 8:00 PM EDT – Sunday, Apr 19 2026 12:00 AM EDT
Issued by NWS Upton NY
COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 8 PM SATURDAY TO MIDNIGHT EDT SATURDAY NIGHT... ...COASTAL FLOOD STATEMENT HAS EXPIRED
What:
Up to one foot of inundation above ground level
expected in vulnerable areas near the waterfront and shoreline.
Up to one foot of inundation above ground level
expected in vulnerable areas near the waterfront and shoreline.
Where:
In New Jersey, Hudson, Eastern Essex and Eastern Union
Counties. In New York, Richmond (Staten Island) County.
In New Jersey, Hudson, Eastern Essex and Eastern Union
Counties. In New York, Richmond (Staten Island) County.
When:
For the Coastal Flood Advisory, from 8 PM Saturday to
midnight EDT Saturday night.
For the Coastal Flood Advisory, from 8 PM Saturday to
midnight EDT Saturday night.
Impacts:
Minor flooding in the more vulnerable locations
near the waterfront and shoreline. Some roads and low lying
properties including parking lots, parks, lawns, and homes and
businesses with basements near the waterfront will experience
minor flooding.
Minor flooding in the more vulnerable locations
near the waterfront and shoreline. Some roads and low lying
properties including parking lots, parks, lawns, and homes and
businesses with basements near the waterfront will experience
minor flooding.
Instructions:
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Areas Impacted:
Hudson
Eastern Essex
Eastern Union
Richmond (Staten Is.)
Coastal Flood Advisory
In effect:
Saturday, Apr 18 2026 11:00 PM EDT – Sunday, Apr 19 2026 2:00 AM EDT
Issued by NWS Upton NY
COASTAL FLOOD STATEMENT REMAINS IN EFFECT UNTIL 1 AM EDT SATURDAY... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 11 PM SATURDAY TO 2 AM EDT SUNDAY
What:
For the Coastal Flood Statement, up to one half foot of
inundation above ground level expected in vulnerable areas
near the waterfront and shoreline. For the Coastal Flood
Advisory, up to one foot of inundation above ground level
expected in vulnerable areas near the waterfront and shoreline.
For the Coastal Flood Statement, up to one half foot of
inundation above ground level expected in vulnerable areas
near the waterfront and shoreline. For the Coastal Flood
Advisory, up to one foot of inundation above ground level
expected in vulnerable areas near the waterfront and shoreline.
Where:
In Connecticut, Southern Fairfield County. In New
York, Southern Westchester County.
In Connecticut, Southern Fairfield County. In New
York, Southern Westchester County.
When:
For the Coastal Flood Statement, until 1 AM EDT
Saturday. For the Coastal Flood Advisory, from 11 PM Saturday
to 2 AM EDT Sunday.
For the Coastal Flood Statement, until 1 AM EDT
Saturday. For the Coastal Flood Advisory, from 11 PM Saturday
to 2 AM EDT Sunday.
Impacts:
Minor flooding in the more vulnerable locations near
the waterfront and shoreline. Some roads and low lying
properties including parking lots, parks, lawns, and homes and
businesses with basements near the waterfront will experience
minor flooding.
Minor flooding in the more vulnerable locations near
the waterfront and shoreline. Some roads and low lying
properties including parking lots, parks, lawns, and homes and
businesses with basements near the waterfront will experience
minor flooding.
Additional Details:
Additional minor flooding is possible for
the Sunday evening high tide.
Additional minor flooding is possible for
the Sunday evening high tide.
Instructions:
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Areas Impacted:
Southern Fairfield
Southern Westchester
Coastal Flood Advisory
In effect:
Saturday, Apr 18 2026 11:00 PM EDT – Sunday, Apr 19 2026 3:00 AM EDT
Issued by NWS Mount Holly NJ
COASTAL FLOOD ADVISORY IN EFFECT FROM 11 PM SATURDAY TO 3 AM EDT SUNDAY
What:
Up to one foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
Up to one foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
Where:
In Delaware, New Castle. In New Jersey, Salem.
In Delaware, New Castle. In New Jersey, Salem.
When:
From 11 PM Saturday to 3 AM EDT Sunday.
From 11 PM Saturday to 3 AM EDT Sunday.
Impacts:
At this level, flooding begins on the most
vulnerable roads along tidal waterways. Some partial or full
road closures are possible.
At this level, flooding begins on the most
vulnerable roads along tidal waterways. Some partial or full
road closures are possible.
Instructions:
A Coastal Flood Advisory means that minor tidal flooding is
expected. Minor tidal flooding often results in some road
closures. Usually, the most vulnerable roadways will flood.
Do not leave your vehicle at a location that is prone to tidal
flooding. Do not drive your vehicle through flood waters. The
water may be deeper than you think it is. You will be putting
yourself in danger and your vehicle may be damaged, leading to
costly repairs.
Visit the National Water Prediction Service at
https://water.noaa.gov/wfo/phi for additional water level and
flood impact information for your local tide gauge.
A Coastal Flood Advisory means that minor tidal flooding is
expected. Minor tidal flooding often results in some road
closures. Usually, the most vulnerable roadways will flood.
Do not leave your vehicle at a location that is prone to tidal
flooding. Do not drive your vehicle through flood waters. The
water may be deeper than you think it is. You will be putting
yourself in danger and your vehicle may be damaged, leading to
costly repairs.
Visit the National Water Prediction Service at
https://water.noaa.gov/wfo/phi for additional water level and
flood impact information for your local tide gauge.
Areas Impacted:
New Castle
Salem
Coastal Flood Advisory
In effect:
Saturday, Apr 18 2026 8:00 PM EDT – Sunday, Apr 19 2026 2:00 AM EDT
Issued by NWS Mount Holly NJ
COASTAL FLOOD ADVISORY IN EFFECT FROM 8 PM SATURDAY TO 2 AM EDT SUNDAY
What:
Up to one foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
Up to one foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
Where:
Portions of central and southern Delaware and New
Jersey.
Portions of central and southern Delaware and New
Jersey.
When:
From 8 PM Saturday to 2 AM EDT Sunday.
From 8 PM Saturday to 2 AM EDT Sunday.
Impacts:
At this level, flooding begins on the most
vulnerable roads in coastal and bayside communities, and along
inland tidal waterways. Some partial or full road closures are
possible.
At this level, flooding begins on the most
vulnerable roads in coastal and bayside communities, and along
inland tidal waterways. Some partial or full road closures are
possible.
Instructions:
A Coastal Flood Advisory means that minor tidal flooding is
expected. Minor tidal flooding often results in some road
closures. Usually, the most vulnerable roadways will flood.
Do not leave your vehicle at a location that is prone to tidal
flooding. Do not drive your vehicle through flood waters. The
water may be deeper than you think it is. You will be putting
yourself in danger and your vehicle may be damaged, leading to
costly repairs.
Visit the National Water Prediction Service at
https://water.noaa.gov/wfo/phi for additional water level and
flood impact information for your local tide gauge.
A Coastal Flood Advisory means that minor tidal flooding is
expected. Minor tidal flooding often results in some road
closures. Usually, the most vulnerable roadways will flood.
Do not leave your vehicle at a location that is prone to tidal
flooding. Do not drive your vehicle through flood waters. The
water may be deeper than you think it is. You will be putting
yourself in danger and your vehicle may be damaged, leading to
costly repairs.
Visit the National Water Prediction Service at
https://water.noaa.gov/wfo/phi for additional water level and
flood impact information for your local tide gauge.
Areas Impacted:
Kent
Inland Sussex
Delaware Beaches
Middlesex
Western Monmouth
Eastern Monmouth
Ocean
Cumberland
Atlantic
Cape May
Atlantic Coastal Cape May
Coastal Atlantic
Coastal Ocean
Southeastern Burlington
Coastal Flood Advisory
In effect:
Sunday, Apr 19 2026 1:00 AM EDT – Sunday, Apr 19 2026 6:00 AM EDT
Issued by NWS Mount Holly NJ
COASTAL FLOOD ADVISORY IN EFFECT FROM 1 AM TO 6 AM EDT SUNDAY
What:
Up to one foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
Up to one foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
Where:
In New Jersey, Gloucester, Camden and Northwestern
Burlington. In Pennsylvania, Delaware, Philadelphia, Eastern
Montgomery and Lower Bucks.
In New Jersey, Gloucester, Camden and Northwestern
Burlington. In Pennsylvania, Delaware, Philadelphia, Eastern
Montgomery and Lower Bucks.
When:
From 1 AM to 6 AM EDT Sunday.
From 1 AM to 6 AM EDT Sunday.
Impacts:
At this level, flooding begins on the most
vulnerable roads along tidal waterways. Some partial or full
road closures are possible.
At this level, flooding begins on the most
vulnerable roads along tidal waterways. Some partial or full
road closures are possible.
Instructions:
A Coastal Flood Advisory means that minor tidal flooding is
expected. Minor tidal flooding often results in some road
closures. Usually, the most vulnerable roadways will flood.
Do not leave your vehicle at a location that is prone to tidal
flooding. Do not drive your vehicle through flood waters. The
water may be deeper than you think it is. You will be putting
yourself in danger and your vehicle may be damaged, leading to
costly repairs.
Visit the National Water Prediction Service at
https://water.noaa.gov/wfo/phi for additional water level and
flood impact information for your local tide gauge.
A Coastal Flood Advisory means that minor tidal flooding is
expected. Minor tidal flooding often results in some road
closures. Usually, the most vulnerable roadways will flood.
Do not leave your vehicle at a location that is prone to tidal
flooding. Do not drive your vehicle through flood waters. The
water may be deeper than you think it is. You will be putting
yourself in danger and your vehicle may be damaged, leading to
costly repairs.
Visit the National Water Prediction Service at
https://water.noaa.gov/wfo/phi for additional water level and
flood impact information for your local tide gauge.
Areas Impacted:
Gloucester
Camden
Northwestern Burlington
Delaware
Philadelphia
Eastern Montgomery
Lower Bucks
Coastal Flood Advisory
In effect:
Saturday, Apr 18 2026 4:03 AM – Saturday, Apr 18 2026 5:00 PM
Issued by NWS Tiyan GU
HIGH SURF WARNING REMAINS IN EFFECT UNTIL 10 AM CHST THIS MORNING... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 5 PM CHST THIS AFTERNOON... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH SUNDAY AFTERNOON... ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 5 PM CHST SUNDAY
What:
For the High Surf Warning, dangerously large breaking
waves of 11 to 15 feet. For the Coastal Flood Advisory, minor
coastal flooding of 1 to 2 feet. For the High Surf Advisory,
large breaking waves of 10 to 14 feet expected. For the High Rip
Current Risk, dangerous rip currents.
For the High Surf Warning, dangerously large breaking
waves of 11 to 15 feet. For the Coastal Flood Advisory, minor
coastal flooding of 1 to 2 feet. For the High Surf Advisory,
large breaking waves of 10 to 14 feet expected. For the High Rip
Current Risk, dangerous rip currents.
Where:
South, west and north facing reefs and shorelines of
Guam and Rota.
South, west and north facing reefs and shorelines of
Guam and Rota.
When:
For the High Surf Warning, until 10 AM ChST this morning.
For the Coastal Flood Advisory, until 5 PM ChST today. For the
High Surf Advisory, from 10 AM this morning to 5 PM ChST Sunday.
For the High Rip Current Risk, through Sunday afternoon.
For the High Surf Warning, until 10 AM ChST this morning.
For the Coastal Flood Advisory, until 5 PM ChST today. For the
High Surf Advisory, from 10 AM this morning to 5 PM ChST Sunday.
For the High Rip Current Risk, through Sunday afternoon.
Impacts:
Flooding of lots, parks, and roads with only isolated
road closures expected. Breaking waves can sweep people off
jetties and docks, and into dangerous seas. Life-threatening
swimming conditions and significant beach erosion can be
expected. Rip currents can sweep even the best swimmers away from
shore into deeper water.
Flooding of lots, parks, and roads with only isolated
road closures expected. Breaking waves can sweep people off
jetties and docks, and into dangerous seas. Life-threatening
swimming conditions and significant beach erosion can be
expected. Rip currents can sweep even the best swimmers away from
shore into deeper water.
Additional Details:
As TY Sinlaku continues to move away, the
primary swell and highest surf will be northwest. Seas will be
slow to subside over the next couple of days. Surf heights of
12 to 16 feet are expected for Guam and Rota.
As TY Sinlaku continues to move away, the
primary swell and highest surf will be northwest. Seas will be
slow to subside over the next couple of days. Surf heights of
12 to 16 feet are expected for Guam and Rota.
Instructions:
Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.
Rip currents will be life threatening. If caught in a rip
current, relax and float. Don't swim against the current. If
able, swim in a direction following the shoreline. If unable to
escape, face the shore and call or wave for help.
Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.
Rip currents will be life threatening. If caught in a rip
current, relax and float. Don't swim against the current. If
able, swim in a direction following the shoreline. If unable to
escape, face the shore and call or wave for help.
Areas Impacted:
Guam
Rota
Coastal Flood Advisory
In effect:
Saturday, Apr 18 2026 5:00 AM – Sunday, Apr 19 2026 11:00 AM
Issued by NWS Tiyan GU
COASTAL FLOOD WARNING IS CANCELLED... ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 10 AM CHST THIS MORNING... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH SUNDAY AFTERNOON... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 11 AM CHST SUNDAY... ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 5 PM CHST SUNDAY
What:
For the High Surf Warning, dangerously
large breaking waves of 12 to 17 feet. For the Coastal Flood
Advisory, minor coastal flooding of 1 to 2 feet expected. For the
High Surf Advisory, large breaking waves of 10 to 14 feet
expected. For the High Rip Current Risk, dangerous rip currents.
For the High Surf Warning, dangerously
large breaking waves of 12 to 17 feet. For the Coastal Flood
Advisory, minor coastal flooding of 1 to 2 feet expected. For the
High Surf Advisory, large breaking waves of 10 to 14 feet
expected. For the High Rip Current Risk, dangerous rip currents.
Where:
South, west, and north facing reefs of Tinian and Saipan.
South, west, and north facing reefs of Tinian and Saipan.
When:
For the High Surf Warning, until 10 AM ChST this
morning. For the Coastal Flood Advisory, until 11 AM ChST Sunday.
For the High Surf Advisory, from 10 AM this morning to 5 PM ChST
Sunday. For the High Rip Current Risk, through Sunday afternoon.
For the High Surf Warning, until 10 AM ChST this
morning. For the Coastal Flood Advisory, until 11 AM ChST Sunday.
For the High Surf Advisory, from 10 AM this morning to 5 PM ChST
Sunday. For the High Rip Current Risk, through Sunday afternoon.
Impacts:
Flooding of lots, parks, and roads with only isolated
road closures expected. Breaking waves can sweep people off
jetties and docks, and into dangerous seas. Life-threatening
swimming conditions and significant beach erosion can be
expected. Rip currents can sweep even the best swimmers away from
shore into deeper water.
Flooding of lots, parks, and roads with only isolated
road closures expected. Breaking waves can sweep people off
jetties and docks, and into dangerous seas. Life-threatening
swimming conditions and significant beach erosion can be
expected. Rip currents can sweep even the best swimmers away from
shore into deeper water.
Additional Details:
As Typhoon Sinlaku continues to move away,
the primary swell and highest surf will be northwest. Seas will
be slow to subside over the next couple of days.
As Typhoon Sinlaku continues to move away,
the primary swell and highest surf will be northwest. Seas will
be slow to subside over the next couple of days.
Instructions:
Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.
Rip currents will be life threatening. If caught in a rip
current, relax and float. Don't swim against the current. If
able, swim in a direction following the shoreline. If unable to
escape, face the shore and call or wave for help.
Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.
Rip currents will be life threatening. If caught in a rip
current, relax and float. Don't swim against the current. If
able, swim in a direction following the shoreline. If unable to
escape, face the shore and call or wave for help.
Areas Impacted:
Tinian
Saipan
Coastal Flood Advisory
In effect:
Friday, Apr 17 2026 9:00 PM EDT – Saturday, Apr 18 2026 1:00 AM EDT
Issued by NWS Wilmington NC
COASTAL FLOOD ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 1 AM EDT SATURDAY
What:
Up to one half foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
Up to one half foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
Where:
The lower Cape Fear River including downtown
Wilmington.
The lower Cape Fear River including downtown
Wilmington.
When:
From 9 PM this evening to 1 AM EDT Saturday.
From 9 PM this evening to 1 AM EDT Saturday.
Impacts:
The lowest portions of USS North Carolina Road and
Battleship Road begin to observe minor coastal flooding. Water
begins to spread out of storm drains onto Water Street just
south of Market Street in downtown Wilmington.
The lowest portions of USS North Carolina Road and
Battleship Road begin to observe minor coastal flooding. Water
begins to spread out of storm drains onto Water Street just
south of Market Street in downtown Wilmington.
Additional Details:
Affected areas listed are based on
average tide conditions. Additional locations may experience
flooding during periods of heavy rainfall, high winds, or
other factors.
Affected areas listed are based on
average tide conditions. Additional locations may experience
flooding during periods of heavy rainfall, high winds, or
other factors.
Instructions:
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Areas Impacted:
Inland New Hanover