National Weather Service United States Department of Commerce

NWS Mt Holly Weather Briefing Page

 

Click HERE for the Latest Hazardous Weather Briefing

Suggestions for improvement are welcome.

         NWSandEM.gif

 

Main Briefing
Page
Severe
Thunderstorms
Tides/Coastal
Flooding
Rivers/River
Flooding
Extended Forecasts
& Drought
Space Weather Fire Weather
Winter Weather Hurricanes Marine Weather Radar and
Satellite
Climate Data Maps and
Models
Local Forecast
Graphics

 

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

No Plot Available

Total Water Level Main Page

Manasquan, NJ (MSNN4)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

No Plot Available

Total Water Level Main Page

Barnegat Light, NJ (BGLN4)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

No Plot Available

Total Water Level Main Page

Atlantic City, NJ (ACYN4)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

No Plot Available

Total Water Level Main Page

Ocean City, NJ (ONCN4)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

No Plot Available

Total Water Level Main Page

Cape May, NJ (PABN4)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

No Plot Available

Total Water Level Main Page

Bivalve, NJ (BVVN4)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

No Plot Available

Total Water Level Main Page

Burlington, NJ (BDRN4)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

No Plot Available

Total Water Level Main Page

Philadelphia, PA (PHBP1)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

No Plot Available

Total Water Level Main Page

Reedy Point, DE (RDYD1)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

No Plot Available

Total Water Level Main Page

Bowers Beach, DE (BOWD1)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

No Plot Available

Total Water Level Main Page

Lewes, DE (LWSD1)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

No Plot Available

Total Water Level Main Page

Tolchester Beach, MD (TCBM2)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

No Plot Available

Total Water Level Main Page

Claiborne, MD (CLNM2)

Total Water Level Obs/Forecasts Scaled to Records

No Plot Available

No Plot Available

Total Water Level Main Page

 

Coastal Hazard Message NWS PHI

WHUS41 KPHI 172319
CFWPHI

Coastal Hazard Message
National Weather Service Mount Holly NJ
619 PM EST Mon Jan 17 2022

MDZ015-019-020-180030-
/O.CAN.KPHI.CF.Y.0030.000000T0000Z-220118T0100Z/
Queen Annes-Talbot-Caroline-
619 PM EST Mon Jan 17 2022

...COASTAL FLOOD ADVISORY IS CANCELLED...

Water levels are declining, and no additional coastal flooding is
expected. The advisory is cancelled.

$$

MDZ012-180030-
/O.CAN.KPHI.CF.Y.0030.000000T0000Z-220118T0300Z/
Kent MD-
619 PM EST Mon Jan 17 2022

...COASTAL FLOOD ADVISORY IS CANCELLED...

Water levels are declining, and no additional coastal flooding is
expected. The advisory is cancelled.

$$

NJZ020-026-180030-
/O.CAN.KPHI.CF.S.0003.000000T0000Z-220118T0000Z/
Ocean-Coastal Ocean-
619 PM EST Mon Jan 17 2022

...COASTAL FLOOD THREAT DIMINISHING IN BARNEGAT BAY...

While some minor flooding continues on Barnegat Bay, water levels
are declining, and will continue to do so.

$$

JEO

Coastal Hazard Message NWS OKX

WHUS41 KOKX 171640
CFWOKX

Coastal Hazard Message
National Weather Service New York NY
1140 AM EST Mon Jan 17 2022

CTZ009-NYZ071-171800-
/O.CAN.KOKX.CF.W.0001.000000T0000Z-220117T1800Z/
/O.NEW.KOKX.CF.S.0005.220117T1640Z-220117T1800Z/
Southern Fairfield-Southern Westchester-
1140 AM EST Mon Jan 17 2022

...COASTAL FLOOD WARNING IS CANCELLED...
...MINOR COASTAL FLOODING STILL POSSIBLE EARLY THIS AFTERNOON... 

* WHAT...Less than one foot of inundation above ground level in 
  vulnerable areas near the waterfront and shoreline.

* WHERE...In Connecticut, Southern Fairfield County. In New 
  York, Southern Westchester County.

* WHEN...Until 1 PM EST this afternoon.

* IMPACTS...Water levels are receding, but minor flooding is 
  still expected in the more vulnerable locations near the 
  waterfront and shoreline until about 1 PM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

$$

NYZ079-081-171800-
/O.CAN.KOKX.CF.W.0001.000000T0000Z-220117T1900Z/
/O.NEW.KOKX.CF.S.0005.220117T1640Z-220117T1800Z/
Northeast Suffolk-Southeast Suffolk-
1140 AM EST Mon Jan 17 2022

...COASTAL FLOOD STATEMENT IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
...MINOR COASTAL FLOODING STILL POSSIBLE EARLY THIS AFTERNOON... 

* WHAT...Up to one half foot of inundation above ground level in 
  vulnerable areas near the waterfront and shoreline.

* WHERE...Northeast Suffolk and Southeast Suffolk Counties.

* WHEN...Until 1 PM EST this afternoon.

* IMPACTS...Water levels are receding, but minor flooding is 
  still expected in the more vulnerable locations near the 
  waterfront and shoreline until about 1 PM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

$$

NYZ080-171800-
/O.CAN.KOKX.CF.W.0001.000000T0000Z-220117T1700Z/
/O.NEW.KOKX.CF.S.0005.220117T1640Z-220117T1800Z/
Southwest Suffolk-
1140 AM EST Mon Jan 17 2022

...COASTAL FLOOD STATEMENT IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
...MINOR COASTAL FLOODING STILL OCCURRING EARLY THIS AFTERNOON...


* WHAT...Less than one foot of inundation above ground level in 
  vulnerable areas near the waterfront and shoreline.

* WHERE...Southwest Suffolk County.

* WHEN...Until 1 PM EST this afternoon.

* IMPACTS...Water levels had just peaked beneath moderate flood
  thresholds. Minor flooding is still expected in vulnerable
  locations near the waterfront and shoreline into early this
  afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

$$

CTZ010>012-NYZ073-078-176-177-171745-
/O.CAN.KOKX.CF.W.0001.000000T0000Z-220117T1800Z/
Southern New Haven-Southern Middlesex-Southern New London-Bronx-
Northwest Suffolk-Northern Queens-Northern Nassau-
1140 AM EST Mon Jan 17 2022

...COASTAL FLOOD WARNING IS CANCELLED...

Water levels have receded below flood thresholds. 

$$

NYZ074-075-178-179-171745-
/O.CAN.KOKX.CF.W.0001.000000T0000Z-220117T1700Z/
Richmond (Staten Island)-Kings (Brooklyn)-Southern Queens-
Southern Nassau-
1140 AM EST Mon Jan 17 2022

...COASTAL FLOOD WARNING IS CANCELLED...

Water levels have receded below flood thresholds. 

$$

For more information from the National Weather Service visit
https://weather.gov/nyc

Coastal Hazard Message NWS LWX

WHUS41 KLWX 180214
CFWLWX

Coastal Hazard Message
National Weather Service Baltimore MD/Washington DC
914 PM EST Mon Jan 17 2022

MDZ508-180315-
/O.CAN.KLWX.CF.Y.0005.000000T0000Z-220118T0600Z/
Southeast Harford-
914 PM EST Mon Jan 17 2022

...COASTAL FLOOD ADVISORY IS CANCELLED...

Minor coastal flooding is no longer expected.

$$

Coastal Hazard Message NWS AKQ

WHUS41 KAKQ 222035
CFWAKQ

Coastal Hazard Message
National Weather Service Wakefield VA
335 PM EST Sat Jan 22 2022

NCZ102-230000-
/O.EXT.KAKQ.SU.Y.0003.000000T0000Z-220123T0000Z/
Eastern Currituck-
335 PM EST Sat Jan 22 2022

...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 7 PM EST THIS EVENING...

* WHAT...Large breaking waves of 6 to 9 feet in the surf zone.

* WHERE...Eastern Currituck County.

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

&&

$$

05

Tides and Coastal Flooding Discussion

.TIDES/COASTAL FLOODING...
We have been keeping an eye on the Saturday morning high tide as it 
relates to the expected coastal storm. Fortunately, conditions are 
lining up to preclude the development of any significant tidal 
flooding.

A north northeast wind is forecast to develop on Friday evening, 
with wind speeds increasing on Friday night. Ekman transport will 
begin to push water toward the coast. However, the period of time 
with an onshore push leading up to Saturday morning's high tide will 
be somewhat limited (less than 12 hours). We will need a surge of 
+1.2 to +1.4 feet to begin causing minor flooding along the coasts 
of Delaware and New Jersey at that time. Based on the latest 
guidance, we should exceed those values by only a few tenths of a 
foot, mainly in southern Delaware and in Cape May County, New 
Jersey. As a result, we are anticipating the potential for 
widespread minor flooding at those locations. Only spotty minor 
flooding is expected along the rest of the New Jersey coast and 
along Delaware Bay. There should be no flooding along the tidal 
Delaware River or on the upper eastern shore of Chesapeake Bay.

Even as the wind backs to the northwest for Saturday evening, water 
levels along the coast should remain elevated. Saturday evening's 
high tide is the lower of the two daily high tides, so no flooding 
is forecast at that time.

Some of the guidance is hinting at a lingering round of minor 
flooding with Sunday morning's high tide before the water begins to 
drain away from the coast.

&&

 

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)

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.