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Perth Amboy, NJ (PABN4)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

No Plot Available

Total Water Level Main Page

Sandy Hook, NJ (SDHN4)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

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Total Water Level Main Page

Manasquan, NJ (MSNN4)

Total Water Level Obs/Forecasts Scaled to Records

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Total Water Level Main Page

Barnegat Light, NJ (BGLN4)

Total Water Level Obs/Forecasts Scaled to Records

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Total Water Level Main Page

Atlantic City, NJ (ACYN4)

Total Water Level Obs/Forecasts Scaled to Records

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Total Water Level Main Page

Ocean City, NJ (ONCN4)

Total Water Level Obs/Forecasts Scaled to Records

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Total Water Level Main Page

Cape May, NJ (PABN4)

Total Water Level Obs/Forecasts Scaled to Records

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Total Water Level Main Page

Bivalve, NJ (BVVN4)

Total Water Level Obs/Forecasts Scaled to Records

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Total Water Level Main Page

Burlington, NJ (BDRN4)

Total Water Level Obs/Forecasts Scaled to Records

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Total Water Level Main Page

Philadelphia, PA (PHBP1)

Total Water Level Obs/Forecasts Scaled to Records

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Total Water Level Main Page

Reedy Point, DE (RDYD1)

Total Water Level Obs/Forecasts Scaled to Records

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Total Water Level Main Page

Bowers Beach, DE (BOWD1)

Total Water Level Obs/Forecasts Scaled to Records

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Total Water Level Main Page

Lewes, DE (LWSD1)

Total Water Level Obs/Forecasts Scaled to Records

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Chesapeake City, MD (CHCM2)

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Total Water Level Main Page

Tolchester Beach, MD (TCBM2)

Total Water Level Obs/Forecasts Scaled to Records

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Total Water Level Main Page

Claiborne, MD (CLNM2)

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Coastal Hazard Message NWS PHI

WHUS41 KPHI 031619
CFWPHI

Coastal Hazard Message
National Weather Service Mount Holly NJ
1219 PM EDT Fri Jul 3 2020

NJZ012>014-020-026-040400-
/O.NEW.KPHI.CF.Y.0017.200703T2300Z-200704T0400Z/
Middlesex-Western Monmouth-Eastern Monmouth-Ocean-Coastal Ocean-
1219 PM EDT Fri Jul 3 2020

...COASTAL FLOOD ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
MIDNIGHT EDT TONIGHT...

* WHAT...Up to one half foot of inundation above ground level 
  expected in low-lying areas near shorelines and tidal 
  waterways.

* WHERE...Middlesex, Western Monmouth, Eastern Monmouth, Ocean 
  and Coastal Ocean.

* WHEN...From 7 PM this evening to midnight EDT tonight.

* 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.

* ADDITIONAL DETAILS...Additional minor coastal flooding is
  possible with the evening high tide cycles on Saturday and
  Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 Advanced Hydrologic Prediction Service at
water.weather.gov/ahps for additional water level and flood
impact information for your local tide gauge.

&&

Time of high total tides are approximate to the nearest hour.

Arthur Kill at Perth Amboy
MLLW Categories - Minor 7.1 ft, Moderate 8.1 ft, Major 9.1 ft
MHHW Categories - Minor 1.4 ft, Moderate 2.4 ft, Major 3.4 ft

             Total      Total    Departure          
 Day/Time    Tide       Tide     from Norm   Flood  
            ft MLLW    ft MHHW       ft      Impact 
 --------  ---------  ---------  ---------  --------
 03/07 PM     7.4        1.8       0.8      Minor    
 04/08 AM     6.1        0.5       0.8       None    
 04/08 PM     7.3        1.7       0.7      Minor    
 05/09 AM     5.8        0.2       0.5       None    
 05/09 PM     7.1        1.5       0.6      Minor    
 06/09 AM     5.6       -0.0       0.4       None

Sandy Hook Bay at Sandy Hook
MLLW Categories - Minor 6.7 ft, Moderate 7.7 ft, Major 8.7 ft
MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 3.5 ft

             Total      Total    Departure          
 Day/Time    Tide       Tide     from Norm   Flood  
            ft MLLW    ft MHHW       ft      Impact 
 --------  ---------  ---------  ---------  --------
 03/07 PM     7.0        1.8       0.9      Minor    
 04/08 AM     5.8        0.6       0.9       None    
 04/08 PM     6.9        1.7       0.8      Minor    
 05/09 AM     5.5        0.3       0.6       None    
 05/09 PM     6.7        1.5       0.7      Minor    
 06/09 AM     5.4        0.2       0.6       None

Watson Creek at Manasquan
MLLW Categories - Minor 5.7 ft, Moderate 6.7 ft, Major 7.7 ft
MHHW Categories - Minor 1.2 ft, Moderate 2.2 ft, Major 3.2 ft

             Total      Total    Departure          
 Day/Time    Tide       Tide     from Norm   Flood  
            ft MLLW    ft MHHW       ft      Impact 
 --------  ---------  ---------  ---------  --------
 03/07 PM     6.0        1.5       0.4      Minor    
 04/08 AM     5.0        0.5       0.6       None    
 04/08 PM     6.0        1.5       0.5      Minor    
 05/08 AM     4.8        0.3       0.4       None    
 05/09 PM     5.7        1.2       0.3      Minor    
 06/09 AM     4.6        0.1       0.2       None

Barnegat Bay at Barnegat Light
MLLW Categories - Minor 3.5 ft, Moderate 4.5 ft, Major 5.5 ft
MHHW Categories - Minor 1.0 ft, Moderate 2.0 ft, Major 3.0 ft

             Total      Total    Departure          
 Day/Time    Tide       Tide     from Norm   Flood  
            ft MLLW    ft MHHW       ft      Impact 
 --------  ---------  ---------  ---------  --------
 03/07 PM     3.8        1.3       0.7      Minor    
 04/08 AM     3.0        0.5       0.8       None    
 04/08 PM     3.9        1.4       0.8      Minor    
 05/08 AM     2.9        0.4       0.7       None    
 05/09 PM     3.6        1.1       0.6      Minor    
 06/09 AM     2.7        0.2       0.5       None

&&

$$

NJZ022>025-027-040400-
/O.NEW.KPHI.CF.Y.0017.200703T2300Z-200704T0400Z/
Atlantic-Cape May-Atlantic Coastal Cape May-Coastal Atlantic-
Southeastern Burlington-
1219 PM EDT Fri Jul 3 2020

...COASTAL FLOOD ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
MIDNIGHT EDT TONIGHT...

* WHAT...Up to one foot of inundation above ground level 
  expected in low-lying areas near shorelines and tidal 
  waterways.

* WHERE...Atlantic, Cape May, Atlantic Coastal Cape May, Coastal 
  Atlantic and Southeastern Burlington.

* WHEN...From 7 PM this evening to midnight EDT tonight.

* 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.

* ADDITIONAL DETAILS...Additional minor coastal flooding is
  possible with the evening high tide cycles on Saturday and
  Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 Advanced Hydrologic Prediction Service at
water.weather.gov/ahps for additional water level and flood
impact information for your local tide gauge.

&&

Time of high total tides are approximate to the nearest hour.

Atlantic Ocean at Atlantic City
MLLW Categories - Minor 6.0 ft, Moderate 7.0 ft, Major 8.0 ft
MHHW Categories - Minor 1.4 ft, Moderate 2.4 ft, Major 3.4 ft

             Total      Total    Departure          
 Day/Time    Tide       Tide     from Norm   Flood  
            ft MLLW    ft MHHW       ft      Impact 
 --------  ---------  ---------  ---------  --------
 03/07 PM     6.4        1.8       1.1      Minor    
 04/08 AM     5.1        0.5       1.2       None    
 04/08 PM     6.4        1.8       1.1      Minor    
 05/08 AM     4.8        0.2       0.9       None    
 05/09 PM     6.1        1.5       0.8      Minor    
 06/09 AM     4.4       -0.2       0.6       None

Great Egg Harbor Bay at Ocean City
MLLW Categories - Minor 5.3 ft, Moderate 6.3 ft, Major 7.3 ft
MHHW Categories - Minor 1.3 ft, Moderate 2.3 ft, Major 3.3 ft

             Total      Total    Departure          
 Day/Time    Tide       Tide     from Norm   Flood  
            ft MLLW    ft MHHW       ft      Impact 
 --------  ---------  ---------  ---------  --------
 03/08 PM     5.6        1.6       0.7      Minor    
 04/08 AM     4.3        0.3       0.7       None    
 04/08 PM     5.6        1.6       0.7      Minor    
 05/09 AM     4.1        0.1       0.5       None    
 05/09 PM     5.3        1.3       0.4      Minor    
 06/09 AM     3.7       -0.3       0.2       None

Cape May Harbor at Cape May
MLLW Categories - Minor 6.2 ft, Moderate 7.2 ft, Major 8.2 ft
MHHW Categories - Minor 1.1 ft, Moderate 2.1 ft, Major 3.1 ft

             Total      Total    Departure          
 Day/Time    Tide       Tide     from Norm   Flood  
            ft MLLW    ft MHHW       ft      Impact 
 --------  ---------  ---------  ---------  --------
 03/08 PM     6.8        1.7       0.9      Minor    
 04/08 AM     5.3        0.2       1.0       None    
 04/08 PM     6.9        1.8       1.0      Minor    
 05/09 AM     5.1        0.0       0.8       None    
 05/09 PM     6.6        1.5       0.7      Minor    
 06/10 AM     4.8       -0.3       0.5       None

Barnegat Bay at Barnegat Light
MLLW Categories - Minor 3.5 ft, Moderate 4.5 ft, Major 5.5 ft
MHHW Categories - Minor 1.0 ft, Moderate 2.0 ft, Major 3.0 ft

             Total      Total    Departure          
 Day/Time    Tide       Tide     from Norm   Flood  
            ft MLLW    ft MHHW       ft      Impact 
 --------  ---------  ---------  ---------  --------
 03/07 PM     3.8        1.3       0.7      Minor    
 04/08 AM     3.0        0.5       0.8       None    
 04/08 PM     3.9        1.4       0.8      Minor    
 05/08 AM     2.9        0.4       0.7       None    
 05/09 PM     3.6        1.1       0.6      Minor    
 06/09 AM     2.7        0.2       0.5       None

&&

$$

DEZ002-NJZ021-040400-
/O.NEW.KPHI.CF.Y.0017.200703T2300Z-200704T0400Z/
Kent-Cumberland-
1219 PM EDT Fri Jul 3 2020

...COASTAL FLOOD ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
MIDNIGHT EDT TONIGHT...

* WHAT...Up to one foot of inundation above ground level 
  expected in low-lying areas near shorelines and tidal 
  waterways.

* WHERE...In New Jersey, Cumberland. In Delaware, Kent.

* WHEN...From 7 PM this evening to midnight EDT tonight.

* 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.

* ADDITIONAL DETAILS...Additional minor coastal flooding is
  possible with the evening high tide cycles on Saturday and
  Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 Advanced Hydrologic Prediction Service at
water.weather.gov/ahps for additional water level and flood
impact information for your local tide gauge.

&&

Time of high total tides are approximate to the nearest hour.

Murderkill River at Bowers Beach
MLLW Categories - Minor 6.6 ft, Moderate 7.6 ft, Major 8.6 ft
MHHW Categories - Minor 0.9 ft, Moderate 1.9 ft, Major 2.9 ft

             Total      Total    Departure          
 Day/Time    Tide       Tide     from Norm   Flood  
            ft MLLW    ft MHHW       ft      Impact 
 --------  ---------  ---------  ---------  --------
 03/09 PM     7.1        1.4       0.8      Minor    
 04/10 AM     5.6       -0.1       1.1       None    
 04/10 PM     7.4        1.7       1.1      Minor    
 05/10 AM     5.4       -0.3       0.8       None    
 05/11 PM     7.0        1.3       0.8      Minor

Maurice River at Bivalve
MLLW Categories - Minor 7.6 ft, Moderate 8.6 ft, Major 9.6 ft
MHHW Categories - Minor 1.2 ft, Moderate 2.2 ft, Major 3.2 ft

             Total      Total    Departure          
 Day/Time    Tide       Tide     from Norm   Flood  
            ft MLLW    ft MHHW       ft      Impact 
 --------  ---------  ---------  ---------  --------
 03/09 PM     7.9        1.5       0.9      Minor    
 04/09 AM     6.4       -0.0       1.0       None    
 04/10 PM     8.1        1.7       1.1      Minor    
 05/10 AM     6.2       -0.2       0.8       None    
 05/10 PM     7.8        1.4       1.0      Minor

&&

$$

DEZ003-004-040400-
/O.NEW.KPHI.CF.Y.0017.200703T2300Z-200704T0400Z/
Inland Sussex-Delaware Beaches-
1219 PM EDT Fri Jul 3 2020

...COASTAL FLOOD ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
MIDNIGHT EDT TONIGHT...

* WHAT...Up to one half foot of inundation above ground level 
  expected in low-lying areas near shorelines and tidal 
  waterways.

* WHERE...Inland Sussex and Delaware Beaches.

* WHEN...From 7 PM this evening to midnight EDT tonight.

* 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.

* ADDITIONAL DETAILS...Additional minor coastal flooding is
  possible with the evening high tide cycles on Saturday and
  Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 Advanced Hydrologic Prediction Service at
water.weather.gov/ahps for additional water level and flood
impact information for your local tide gauge.

&&

Time of high total tides are approximate to the nearest hour.

Delaware Bay at Lewes
MLLW Categories - Minor 6.0 ft, Moderate 7.0 ft, Major 8.0 ft
MHHW Categories - Minor 1.3 ft, Moderate 2.3 ft, Major 3.3 ft

             Total      Total    Departure          
 Day/Time    Tide       Tide     from Norm   Flood  
            ft MLLW    ft MHHW       ft      Impact 
 --------  ---------  ---------  ---------  --------
 03/08 PM     6.4        1.8       1.0      Minor    
 04/09 AM     5.1        0.5       1.2       None    
 04/09 PM     6.5        1.8       1.1      Minor    
 05/10 AM     4.8        0.2       0.9       None    
 05/10 PM     6.1        1.5       0.8      Minor    
 06/10 AM     4.5       -0.2       0.6       None

&&

$$

Coastal Hazard Message NWS OKX

WHUS41 KOKX 031941
CFWOKX

Coastal Hazard Message
National Weather Service New York NY
341 PM EDT Fri Jul 3 2020

NYZ074-075-178-179-040200-
/O.CON.KOKX.CF.S.0036.200703T2300Z-200704T0200Z/
Richmond (Staten Island)-Kings (Brooklyn)-Southern Queens-
Southern Nassau-
341 PM EDT Fri Jul 3 2020

* WHAT...Water levels will approach or just exceed minor coastal 
  flood benchmarks, with up to one half foot of inundation above 
  ground level. Localized inundation up to 1 foot is possible 
  in the back bays of Nassau County.

* WHERE...Southern Nassau, Southern Queens, Richmond (Staten 
  Island) and Kings (Brooklyn) Counties.

* WHEN...From 7 PM to 10 PM EDT this evening.

* IMPACTS...Brief minor flooding of the more vulnerable locations
  near the waterfront and shoreline.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

$$

Coastal Hazard Message NWS LWX

WHUS41 KLWX 020853
CFWLWX

Coastal Hazard Message
National Weather Service Baltimore MD/Washington DC
453 AM EDT Thu Jul 2 2020

MDZ014-021000-
/O.EXP.KLWX.CF.Y.0037.000000T0000Z-200702T0900Z/
Anne Arundel-
453 AM EDT Thu Jul 2 2020

...COASTAL FLOOD ADVISORY WILL EXPIRE AT 5 AM EDT EARLY THIS
MORNING...

Water levels have receded.

$$

Coastal Hazard Message NWS AKQ

WHUS41 KAKQ 240140
CFWAKQ

Coastal Hazard Message
National Weather Service Wakefield VA
940 PM EDT Tue Jun 23 2020

MDZ021>023-240945-
/O.NEW.KAKQ.CF.S.0021.200624T0600Z-200624T1200Z/
Dorchester-Wicomico-Somerset-
940 PM EDT Tue Jun 23 2020

...Nuisance Tidal Flooding early Wednesday morning...

* WHAT...Up to one half foot of inundation above ground level 
  expected in low-lying areas near shorelines and tidal 
  waterways.

* WHERE...Dorchester, Somerset and Wicomico Counties, particularly
  for locations around Bishops Head.

* WHEN...From 2 AM to 8 AM EDT Wednesday.

* IMPACTS...Shallow flooding is possible in the most vulnerable 
  locations near the waterfront and shoreline.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

Time of high total tides are approximate to the nearest hour.

CAMBRIDGE MD
MLLW CATEGORIES - MINOR 3.5 FT, MODERATE 4.0 FT, MAJOR 4.5 FT
MHHW CATEGORIES - MINOR 1.5 FT, MODERATE 2.0 FT, MAJOR 2.5 FT

             TOTAL      TOTAL    DEPARTURE                   
 DAY/TIME    TIDE       TIDE     FROM NORM   WAVES    FLOOD  
            FT MLLW    FT MHHW       FT       FT      IMPACT 
 --------  ---------  ---------  ---------  -------  --------
 24/07 AM     3.1        1.1        0.8        1       NONE    
 24/07 PM     2.1        0.1        0.4        1       NONE    
 25/08 AM     2.9        0.9        0.6        1       NONE    
 25/08 PM     2.3        0.3        0.5        1       NONE    
 26/09 AM     2.5        0.5        0.3        1       NONE

BISHOPS HEAD MD
MLLW CATEGORIES - MINOR 3.2 FT, MODERATE 3.7 FT, MAJOR 4.2 FT
MHHW CATEGORIES - MINOR 1.1 FT, MODERATE 1.6 FT, MAJOR 2.1 FT

             TOTAL      TOTAL    DEPARTURE                   
 DAY/TIME    TIDE       TIDE     FROM NORM   WAVES    FLOOD  
            FT MLLW    FT MHHW       FT       FT      IMPACT 
 --------  ---------  ---------  ---------  -------  --------
 24/04 AM     3.2        1.1        0.8        2       NONE    
 24/04 PM     2.5        0.4        0.6        1       NONE    
 25/05 AM     3.0        0.9        0.7        1       NONE    
 25/06 PM     2.6        0.5        0.6        1       NONE    
 26/06 AM     2.8        0.7        0.5        1       NONE    
 26/06 PM     2.4        0.3        0.4        1       NONE

CRISFIELD MD
MLLW CATEGORIES - MINOR 3.5 FT, MODERATE 4.0 FT, MAJOR 5.0 FT
MHHW CATEGORIES - MINOR 1.3 FT, MODERATE 1.8 FT, MAJOR 2.8 FT

             TOTAL      TOTAL    DEPARTURE                   
 DAY/TIME    TIDE       TIDE     FROM NORM   WAVES    FLOOD  
            FT MLLW    FT MHHW       FT       FT      IMPACT 
 --------  ---------  ---------  ---------  -------  --------
 24/03 AM     3.2        1.0        0.8        2       NONE    
 24/04 PM     2.2        0.0        0.5       1-2      NONE    
 25/04 AM     2.9        0.7        0.6        1       NONE    
 25/04 PM     2.2        0.0        0.5        1       NONE    
 26/05 AM     2.7        0.5        0.4        1       NONE    
 26/05 PM     2.0       -0.2        0.3        1       NONE

&&

$$

Tides and Coastal Flooding Discussion

.TIDES/COASTAL FLOODING...
Astronomical high tide levels will continue to rise as there 
will be a full moon this weekend. The evening high tides are 
over a foot higher than those in the morning.

Have issued a coastal flood advisory for the Atlantic coast and
the Delaware Bay as the latest guidance suggests water levels 
will just barely get to advisory levels with this evening's high
tide. The wind has not yet shifted to onshore, but should 
within the next few hours. 

Continued northeasterly and easterly flow could result in 
additional coastal flooding with the high tide cycles Saturday 
and Sunday evening in the same areas, though confidence is low 
at this time, so will hold off on extending the advisory for 
now.

For tidal portions of the Delaware River, at this point it 
looks like water levels will stay below advisory criteria, but 
will monitor the levels in the Delaware Bay closely this evening
to see if it needs to be expanded.

Tidal flooding is not expected on the upper eastern shore of 
Chesapeake Bay.

&&

 

Total Water Level Forecasts for tidal locations can be found on our Advanced Hydrologic Prediction Service (AHPS) page.

 

Total Water Level Forecasts are produced by the National Weather Service in Mount Holly, New Jersey for the following tidal locations.

 

Perth Amboy, New Jersey (Arthur Kill)

Sandy Hook, New Jersey (Sandy Hook Bay)

Manasquan, New Jersey (Watson Creek)

Barnegat Light, New Jersey (Barnegat Bay)

Atlantic City, New Jersey (Oceanfront)

Ocean City, New Jersey (Great Egg Harbor)

Cape May, New Jersey (Cape May Harbor)

Bivalve, New Jersey (Cohansey River)

Burlington, New Jersey (Delaware River)

Philadelphia, Pennsylvania (Delaware River)

Reedy Point, Delaware (Delaware River)

Bowers Beach, Delaware (Murderkill River)

Lewes, Delaware (Delaware Bay)

Chesapeake City, Maryland (Chesapeake and Delaware Canal)

Tolchester Beach, Maryland (Chesapeake Bay)

Claiborne, Maryland (Eastern Bay)

 

Our Advanced Hydrologic Prediction Service (AHPS) page also includes information about other tide gauges in our area.  You can find the flood impacts at certain water levels, as well as historic crests and low water values on the AHPS page.

 

The values listed under Flood Impacts refer to the water level at the tide gauge.  The heights are not to be interpreted as an indication of the water level at the actual locations mentioned in the corresponding impact statements.  Those locations are often a number of miles away from the reference gauge.

 

It is important to remember that the impact statements are based on estimates.  A number of factors can cause the flooding associated with a particular tide level to vary somewhat from event to event.  Those factors include rainfall, wave action and the number of tide cycles during which there is an onshore flow.

 

Being that the impact statements are based on estimates, it may be best to place more emphasis on the descriptive categories of flooding rather than focusing on the specific height values associated with flooding at a given location.  The three categories (minor, moderate, major) provide a much better overall picture of the type of tidal flooding that can be expected in the area.

 

In the MINOR category there is flooding of the most vulnerable roadways due to high water and/or wave splash-over.  The majority of roads remain passable.  There is no significant threat to life.  Any impact on property is minimal.  This type of event is covered by a Coastal Flood Advisory.

 

In the MODERATE category there is widespread flooding of roadways due to high water and/or wave action with many roads becoming impassable.  Lives may be at risk when people put themselves in harm’s way.  Some damage to vulnerable structures may occur.  This type of event is covered by a Coastal Flood Warning.

 

In the MAJOR category there is flooding that is severe enough to cause structural damage along with widespread flooding of roadways. Some evacuations become necessary.  Vulnerable homes and businesses may be severely damaged or destroyed.  Numerous roads become impassable and some neighborhoods may be isolated.  The flood waters become a danger to anyone who attempts to cross on foot or in a vehicle.  This type of event is covered by a Coastal Flood Warning which may contain enhanced wording to emphasize the significant threat to life and property.