National Weather Service United States Department of Commerce

Severe Thunderstorms and Tornadoes Overnight in the South

An outbreak of severe thunderstorms in the Southern U.S. is expected to continue well into the overnight hours. Severe thunderstorms are bringing strong tornadoes, very large hail, and severe wind gusts across parts of the lower to mid Mississippi Valley, Mid-South and parts of the Southeast. A few long-track strong tornadoes remain possible. Read More >

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 291952
CFWPHI

Coastal Hazard Message
National Weather Service Mount Holly NJ
352 PM EDT Sat Oct 29 2022

DEZ003-004-NJZ023-024-292100-
/O.EXP.KPHI.CF.Y.0047.000000T0000Z-221029T2000Z/
Inland Sussex-Delaware Beaches-Cape May-Atlantic Coastal Cape May-
352 PM EDT Sat Oct 29 2022

...COASTAL FLOOD ADVISORY WILL EXPIRE AT 4 PM EDT THIS
AFTERNOON...

High tide has passed, so the coastal flood advisory will be allowed 
to expire. As astronomical high tides continue to decrease as we 
get further from the new moon, we do not anticipate any further 
coastal flood concerns over the next several days.

$$

Staarmann

Coastal Hazard Message NWS OKX

WHUS41 KOKX 251011
CFWOKX

Coastal Hazard Message
National Weather Service New York NY
511 AM EST Fri Nov 25 2022

NYZ178-179-251500-
/O.NEW.KOKX.CF.S.0035.221125T1200Z-221125T1500Z/
Southern Queens-Southern Nassau-
511 AM EST Fri Nov 25 2022

...COASTAL FLOOD STATEMENT IN EFFECT UNTIL 10 AM EST THIS
MORNING...

* WHAT...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.

* WHEN...Until 10 AM EST this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

$$

CTZ009-251815-
/O.NEW.KOKX.CF.S.0036.221125T1600Z-221125T1900Z/
Southern Fairfield-
511 AM EST Fri Nov 25 2022

...COASTAL FLOOD STATEMENT IN EFFECT FROM 11 AM THIS MORNING TO
2 PM EST THIS AFTERNOON...

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

* WHERE...Southern Fairfield County.

* WHEN...From 11 AM this morning to 2 PM EST this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

$$

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

Coastal Hazard Message NWS LWX

WHUS41 KLWX 280234
CFWLWX

Coastal Hazard Message
National Weather Service Baltimore MD/Washington DC
934 PM EST Sun Nov 27 2022

MDZ011-280345-
/O.CAN.KLWX.CF.Y.0062.000000T0000Z-221128T0500Z/
Southern Baltimore-
934 PM EST Sun Nov 27 2022

...COASTAL FLOOD ADVISORY IS CANCELLED...

Water levels have declined and minor flooding is no longer
expected.

$$

MDZ014-280345-
/O.CAN.KLWX.CF.Y.0062.000000T0000Z-221128T0300Z/
Anne Arundel-
934 PM EST Sun Nov 27 2022

...COASTAL FLOOD ADVISORY IS CANCELLED...

Water levels have declined and minor flooding is no longer 
expected.

$$

Coastal Hazard Message NWS AKQ

WHUS41 KAKQ 272023
CFWAKQ

Coastal Hazard Message
National Weather Service Wakefield VA
323 PM EST Sun Nov 27 2022

MDZ021-280000-
/O.CON.KAKQ.CF.S.0021.000000T0000Z-221128T0000Z/
Dorchester-
323 PM EST Sun Nov 27 2022

...COASTAL FLOOD STATEMENT REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

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

* WHERE...Dorchester County, mainly across southern portions of 
  the county near Bishop's Head.

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

* 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 
 --------  ---------  ---------  ---------  -------  --------
 27/07 PM     3.0        1.0        1.1       2-3      NONE    
 28/06 AM     2.0        0.0        0.7        1       NONE    
 28/07 PM     1.9       -0.1        0.1        1       NONE    
 29/09 AM     1.3       -0.7       -0.1        1       NONE    
 29/09 PM     2.0        0.0        0.2        1       NONE    
 30/09 AM     2.1        0.1        0.6       1-2      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 
 --------  ---------  ---------  ---------  -------  --------
 27/04 PM     3.0        0.9        0.9        3       NONE    
 28/04 AM     2.2        0.1        0.5        2       NONE    
 28/05 PM     2.0       -0.1        0.0        2       NONE    
 29/05 AM     1.6       -0.5       -0.1       1-2      NONE    
 29/06 PM     2.2        0.1        0.3        1       NONE    
 30/07 AM     2.3        0.2        0.6        2       NONE

&&

$$

Tides and Coastal Flooding Discussion

No valid coastal flooding discussion is available at this time.

 

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.