Alert archive / Delaware / Coastal Flood Statements in 2019

Coastal Flood Statement 5, NWS Philadelphia/Mount Holly

September 7, 2019Sussex County, Delaware; Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this coastal flood statement at Sep 7, 2019, 6:22 PM EDT for Sussex County, Delaware; Ocean County, New Jersey. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Sep 7, 2019, 6:22 PM EDT (22:22 UTC)
Expired
Sep 8, 2019, 12:00 AM EDT
In force
6 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Sussex County, DE, Ocean County, NJ

The radar

The Dover AFB radar (KDOX), 75 km from the middle of the area, began a volume at 22:23 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.4 hours before the alert went out and 158 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Wallops Is Stn, VA at 12:00Z on 2019-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 12:00Z on 2019-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1148 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
22 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

182 
WHUS41 KPHI 072222
CFWPHI

Coastal Hazard Message
National Weather Service Mount Holly NJ
622 PM EDT Sat Sep 7 2019

MDZ015-019-020-080800-
/O.CON.KPHI.CF.Y.0022.190908T0300Z-190908T0800Z/
Queen Annes-Talbot-Caroline-
622 PM EDT Sat Sep 7 2019

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 11 PM THIS
EVENING TO 4 AM EDT SUNDAY...

* LOCATIONS...Tidal areas in the Maryland counties of Queen
  Anne's, Talbot, and Caroline.

* TIMING...From 11 PM this evening to 4 AM EDT Sunday.

* COASTAL FLOOD IMPACTS...Up to one half foot of inundation above
  ground level is possible in low-lying areas near shorelines and
  tidal waterways. Localized roadway flooding is anticipated.  
  There may be some road closures.

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.

Eastern Bay at Claiborne
MLLW Categories - Minor 3.4 ft, Moderate 4.4 ft, Major 5.4 ft
MHHW Categories - Minor 1.7 ft, Moderate 2.7 ft, Major 3.7 ft

             Total      Total    Departure          
 Day/Time    Tide       Tide     from Norm   Flood  
            ft MLLW    ft MHHW       ft      Impact 
 --------  ---------  ---------  ---------  --------
 08/01 AM     3.4        1.7       1.5      Minor    
 08/12 PM     2.5        0.8       1.3       None    
 09/01 AM     2.9        1.2       1.1       None    
 09/01 PM     2.0        0.3       0.8       None    
 10/02 AM     2.4        0.7       0.6       None    
 10/03 PM     1.9        0.2       0.6       None

&&

$$

NJZ026-080400-
/O.NEW.KPHI.CF.S.0005.190907T2222Z-190908T0400Z/
/O.CON.KPHI.RP.S.0009.000000T0000Z-190908T0100Z/
Coastal Ocean-
622 PM EDT Sat Sep 7 2019

...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

...MINOR COASTAL FLOODING EXPECTED IN BARNEGAT BAY THIS EVENING...

* LOCATIONS...Coastal portions of Ocean County.

* TIMING...For the High Rip Current Risk, until 9 PM EDT this
  evening.

* COASTAL FLOOD IMPACTS...Up to one foot of inundation above
  ground level is possible in low-lying areas near shorelines and
  tidal waterways of Barnegat Bay through the evening hours. Some
  susceptible roadways near Barnegat Bay may flood.

* SURF ZONE IMPACTS...Very strong rip currents will be dangerous 
  to anyone who enters the surf.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Swim near a lifeguard. 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.

&&

$$

DEZ004-080400-
/O.NEW.KPHI.CF.S.0005.190907T2222Z-190908T0400Z/
/O.CON.KPHI.RP.S.0009.000000T0000Z-190908T0100Z/
Delaware Beaches-
622 PM EDT Sat Sep 7 2019

...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

...MINOR COASTAL FLOODING EXPECTED IN LITTLE ASSAWOMAN BAY THIS 
EVENING...

* LOCATIONS...Coastal portions of Sussex County.

* TIMING...For the High Rip Current Risk, until 9 PM EDT this
  evening.

* COASTAL FLOOD IMPACTS...Up to one foot of inundation above
  ground level is possible in low-lying areas near shorelines and
  tidal waterways of Little Assawoman Bay through the evening
  hours. Some susceptible roads near Little Assawoman Bay may
  flood.

* SURF ZONE IMPACTS...Very strong rip currents will be dangerous 
  to anyone who enters the surf.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Swim near a lifeguard. 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.

&&

$$

NJZ020-080400-
/O.NEW.KPHI.CF.S.0005.190907T2222Z-190908T0400Z/
Ocean-
622 PM EDT Sat Sep 7 2019

...MINOR COASTAL FLOODING EXPECTED IN BARNEGAT BAY THIS EVENING...

* LOCATIONS...Tidal portions of Ocean County adjacent to Barnegat
  Bay.

* TIMING...Until midnight EDT tonight.

* COASTAL FLOOD IMPACTS...Up to one foot of inundation above
  ground level is possible in low-lying areas near shorelines and
  tidal waterways of Barnegat Bay through the evening hours. Some
  susceptible roadways near Barnegat Bay may flood.

&&

$$

DEZ003-080400-
/O.NEW.KPHI.CF.S.0005.190907T2222Z-190908T0400Z/
Inland Sussex-
622 PM EDT Sat Sep 7 2019

...MINOR COASTAL FLOODING EXPECTED IN LITTLE ASSAWOMAN BAY THIS 
EVENING...

* LOCATIONS...Tidal portions of Sussex County adjacent to Little
  Assawoman Bay.

* TIMING...Until midnight EDT tonight.

* COASTAL FLOOD IMPACTS...Up to one foot of inundation above
  ground level is possible in low-lying areas near shorelines and
  tidal waterways of Little Assawoman Bay through the evening
  hours. Some susceptible roads near Little Assawoman Bay may
  flood.

&&

$$

NJZ014-024-025-080100-
/O.CON.KPHI.RP.S.0009.000000T0000Z-190908T0100Z/
Eastern Monmouth-Atlantic Coastal Cape May-Coastal Atlantic-
622 PM EDT Sat Sep 7 2019

...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

* LOCATIONS...Coastal portions of Atlantic, Cape May, and Monmouth
  Counties.

* TIMING...Until 9 PM EDT this evening.

* SURF ZONE IMPACTS...Very strong rip currents will be dangerous 
  to anyone who enters the surf.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Swim near a lifeguard. 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.

&&

$$

CMS
1 follow-up statement
121 
WHUS41 KPHI 080052
CFWPHI

Coastal Hazard Message
National Weather Service Mount Holly NJ
852 PM EDT Sat Sep 7 2019

NJZ026-080400-
/O.EXP.KPHI.RP.S.0009.000000T0000Z-190908T0100Z/
/O.CON.KPHI.CF.S.0005.000000T0000Z-190908T0400Z/
Coastal Ocean-
852 PM EDT Sat Sep 7 2019

...HIGH RIP CURRENT RISK WILL EXPIRE AT 9 PM EDT THIS EVENING...

...MINOR COASTAL FLOODING EXPECTED IN BARNEGAT BAY THIS EVENING...

* LOCATIONS...Coastal portions of Ocean County.

* TIMING...Until midnight EDT tonight.

* COASTAL FLOOD IMPACTS...Up to one foot of inundation above
  ground level is possible in low-lying areas near shorelines and
  tidal waterways of Barnegat Bay through the evening hours. Some
  susceptible roadways near Barnegat Bay may flood.

&&

$$

DEZ004-080400-
/O.EXP.KPHI.RP.S.0009.000000T0000Z-190908T0100Z/
/O.CON.KPHI.CF.S.0005.000000T0000Z-190908T0400Z/
Delaware Beaches-
852 PM EDT Sat Sep 7 2019

...HIGH RIP CURRENT RISK WILL EXPIRE AT 9 PM EDT THIS EVENING...

...MINOR COASTAL FLOODING EXPECTED IN LITTLE ASSAWOMAN BAY THIS 
EVENING...

* LOCATIONS...Coastal portions of Sussex County.

* TIMING...For the High Rip Current Risk, until 9 PM EDT this
  evening.

* COASTAL FLOOD IMPACTS...Up to one foot of inundation above
  ground level is possible in low-lying areas near shorelines and
  tidal waterways of Little Assawoman Bay through the evening
  hours. Some susceptible roads near Little Assawoman Bay may
  flood.

&&

$$

NJZ014-024-025-080200-
/O.EXP.KPHI.RP.S.0009.000000T0000Z-190908T0100Z/
Eastern Monmouth-Atlantic Coastal Cape May-Coastal Atlantic-
852 PM EDT Sat Sep 7 2019

...HIGH RIP CURRENT RISK WILL EXPIRE AT 9 PM EDT THIS EVENING...

Rip current conditions have lowered to moderate along the coast,
and will continue through Sunday.

$$

MDZ015-019-020-080800-
/O.CON.KPHI.CF.Y.0022.190908T0300Z-190908T0800Z/
Queen Annes-Talbot-Caroline-
852 PM EDT Sat Sep 7 2019

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 4 AM EDT
SUNDAY...

* LOCATIONS...Talbot, Caroline and Queen Annes.

* TIMING...Until 4 AM EDT Sunday.

* COASTAL FLOOD IMPACTS...Up to one half foot of inundation 
  above ground level is possible in low-lying areas near 
  shorelines and tidal waterways.

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.

Eastern Bay at Claiborne
MLLW Categories - Minor 3.4 ft, Moderate 4.4 ft, Major 5.4 ft
MHHW Categories - Minor 1.7 ft, Moderate 2.7 ft, Major 3.7 ft

             Total      Total    Departure          
 Day/Time    Tide       Tide     from Norm   Flood  
            ft MLLW    ft MHHW       ft      Impact 
 --------  ---------  ---------  ---------  --------
 08/01 AM     3.7        1.7       1.5      Minor    
 08/12 PM     2.5        0.8       1.3       None    
 09/01 AM     2.9        1.2       1.1       None    
 09/01 PM     2.0        0.3       0.8       None    
 10/02 AM     2.4        0.7       0.6       None    
 10/03 PM     1.9        0.2       0.6       None

&&

$$

NJZ020-080400-
/O.CON.KPHI.CF.S.0005.000000T0000Z-190908T0400Z/
Ocean-
852 PM EDT Sat Sep 7 2019

...MINOR COASTAL FLOODING EXPECTED IN BARNEGAT BAY THIS EVENING...

* LOCATIONS...Tidal portions of Ocean County adjacent to Barnegat
  Bay.

* TIMING...Until midnight EDT tonight.

* COASTAL FLOOD IMPACTS...Up to one foot of inundation above
  ground level is possible in low-lying areas near shorelines and
  tidal waterways of Barnegat Bay through the evening hours. Some
  susceptible roadways near Barnegat Bay may flood.

$$

DEZ003-080400-
/O.CON.KPHI.CF.S.0005.000000T0000Z-190908T0400Z/
Inland Sussex-
852 PM EDT Sat Sep 7 2019

...MINOR COASTAL FLOODING EXPECTED IN LITTLE ASSAWOMAN BAY THIS 
EVENING...

* LOCATIONS...Tidal portions of Sussex County adjacent to Little
  Assawoman Bay.

* TIMING...Until midnight EDT tonight.

* COASTAL FLOOD IMPACTS...Up to one foot of inundation above
  ground level is possible in low-lying areas near shorelines and
  tidal waterways of Little Assawoman Bay through the evening
  hours. Some susceptible roads near Little Assawoman Bay may
  flood.&&

$$

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 7, 3:40 AM EDTRip Current StatementPHISussex17 hr

Nearby

Coastal Flood Statements in Delaware, 2019Coastal Flood Statements in New Jersey, 2019Every coastal flood statement in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.