Alert archive / New Jersey / Coastal Flood Advisories in 2019

Coastal Flood Advisory 8, NWS Philadelphia/Mount Holly

May 5, 201911 counties in New Jersey; Bucks County, Delaware County, Philadelphia County, Pennsylvania; Kent County, New Castle County, Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this coastal flood advisory at May 5, 2019, 5:50 AM EDT for 11 counties in New Jersey; Bucks County, Delaware County, Philadelphia County, Pennsylvania; Kent County, New Castle County, Sussex County, Delaware. It took effect at May 5, 2019, 7:00 PM EDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: May 5, 2019, 5:50 AM EDT (09:50 UTC)
In effect from: May 5, 2019, 7:00 PM EDT
Expired: May 6, 2019, 6:00 AM EDT
In force: 11 hr
Issued by: NWS Philadelphia/Mount Holly

Counties Kent County, DE, New Castle County, DE, Sussex County, DE, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Bucks County, PA, Delaware County, PA, Philadelphia County, PA

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 9.8 hours before the alert went out and 203 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 279 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 937 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this coastal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this coastal flood advisory went out at May 5, 3:01 AM EDT, 2 hours 49 minutes earlier.

Area forecast discussion, May 5, 3:01 AM EDT, 2 hours 49 minutes before

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Hazardous weather outlook, May 4, 6:00 PM EDT, 11 hours 50 minutes before

Hazardous Weather Outlook
National Weather Service Mount Holly NJ
600 PM EDT Sat May 4 2019

NJZ001-008-PAZ054-055-052200-
Sussex-Morris-Carbon-Monroe-
600 PM EDT Sat May 4 2019

This Hazardous Weather Outlook is for northern New Jersey and
northeast Pennsylvania.

.DAY ONE...Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ007-009-010-012-PAZ060>062-101>105-052200-
Warren-Hunterdon-Somerset-Middlesex-Berks-Lehigh-Northampton-
Western Chester-Eastern Chester-Western Montgomery-
Eastern Montgomery-Upper Bucks-
600 PM EDT Sat May 4 2019

...FLASH FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON...

This Hazardous Weather Outlook is for northern New Jersey,
northwest New Jersey, east central Pennsylvania and southeast
Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ015-017>019-PAZ070-071-106-052200-
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Lower Bucks-
600 PM EDT Sat May 4 2019

...FLASH FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON...

This Hazardous Weather Outlook is for central New Jersey, southern
New Jersey and southeast Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

Minor coastal flooding is possible along the Delaware River with the
Sunday night high tide.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

DEZ001-NJZ016-052200-
New Castle-Salem-
600 PM EDT Sat May 4 2019

...FLASH FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON...

This Hazardous Weather Outlook is for northern Delaware and
southern New Jersey.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

Minor coastal flooding is possible with the Sunday evening high
tide.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

MDZ008-012-052200-
Cecil-Kent MD-
600 PM EDT Sat May 4 2019

...FLASH FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON...

This Hazardous Weather Outlook is for northeast Maryland.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

MDZ015-019-020-052200-
Queen Annes-Talbot-Caroline-
600 PM EDT Sat May 4 2019

This Hazardous Weather Outlook is for northeast Maryland.

.DAY ONE...Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ002>004-NJZ013-014-020>027-052200-
Kent-Inland Sussex-Delaware Beaches-Western Monmouth-
Eastern Monmouth-Ocean-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean-
Southeastern Burlington-
600 PM EDT Sat May 4 2019

This Hazardous Weather Outlook is for central Delaware, southern
Delaware, central New Jersey and southern New Jersey.

.DAY ONE...Tonight.

The probability of widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Minor coastal flooding is anticipated with the Sunday evening high
tide.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ430-431-450>455-052200-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
600 PM EDT Sat May 4 2019

This Hazardous Weather Outlook is for Atlantic coastal waters and
Delaware Bay Waters.

.DAY ONE...Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

In the hours before

Special weather statement, May 5, 1:54 AM EDT, 3 hours 56 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
154 AM EDT Sun May 5 2019

DEZ002-003-MDZ012-015-019-020-050645-
Inland Sussex-Kent-Queen Anne's-Talbot-Kent-Caroline-
154 AM EDT Sun May 5 2019

...A LINE OF SHOWERS WILL AFFECT WEST CENTRAL SUSSEX...SOUTHWESTERN
KENT...TALBOT...SOUTHWESTERN QUEEN ANNE'S...CAROLINE AND SOUTHWESTERN
KENT COUNTIES...

At 153 AM EDT, radar indicated showers were located along a line
extending from near Deale to Oxford to near Hurlock. Movement was
northeast at 30 mph.

Locations impacted include...
Easton, Talbot, Denton, Harrington, Romancoke, Federalsburg, Ridgely,
Trappe, St. Michaels, Preston, Queen Anne, Smithville, Grasonville,
Starr, Copperville, Jumptown, Agner, Choptank, Windyhill and
Andrewsville.

Heavy rainfall is occurring with these showers, and may cause
ponding on roadways and poor drainage areas. Do not drive your
vehicle through flooded roadways.

No lightning is currently occurring, however, lightning may develop
at anytime. Lightning can strike 15 miles away from a thunderstorm.
If you see lightning or hear thunder seek a safe shelter inside a
building or vehicle.

LAT...LON 3904 7631 3897 7622 3903 7621 3891 7548
      3867 7574 3870 7590 3860 7598 3878 7629
      3867 7634 3875 7637 3885 7627 3879 7619
      3883 7619 3895 7621 3895 7623 3894 7623
      3897 7624 3897 7625 3884 7637
TIME...MOT...LOC 0553Z 221DEG 27KT 3875 7651 3869 7620 3864 7592

Robertson

Special weather statement, May 5, 2:22 AM EDT, 3 hours 28 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
222 AM EDT Sun May 5 2019

DEZ003-004-050700-
Inland Sussex-Delaware Beaches-
222 AM EDT Sun May 5 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SUSSEX COUNTY...

At 221 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near Vienna to near Salisbury to near
Snow Hill. Movement was northeast at 35 mph.

Winds in excess of 40 mph are possible with these storms.

Heavy rainfall is also occurring with this storm...and may cause
ponding on roadways and poor drainage areas. Do not drive your
vehicle through flooded roadways.

Occasional cloud to ground lightning is occurring with this storm.
Lightning can strike 15 miles away from a thunderstorm. If you see
lightning or hear thunder seek a safe shelter inside a building or
vehicle.

Locations impacted include...
Georgetown, Seaford, Millsboro, Laurel, Selbyville, Bridgeville,
Delmar, Dagsboro, Gumboro, Sycamore, Long Neck, Blades, Greenwood,
Frankford and Bethel.

LAT...LON 3846 7569 3871 7571 3884 7557 3871 7518
      3861 7514 3862 7515 3860 7515 3859 7519
      3859 7521 3847 7505 3845 7505
TIME...MOT...LOC 0621Z 217DEG 33KT 3845 7581 3837 7554 3822 7545

Robertson

Special weather statement, May 5, 2:45 AM EDT, 3 hours 5 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
245 AM EDT Sun May 5 2019

DEZ002>004-MDZ019-020-NJZ024-050715-
Inland Sussex-Kent-Delaware Beaches-Talbot-Caroline-Atlantic Coastal
Cape May-
245 AM EDT Sun May 5 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHERN SUSSEX...
SOUTHERN KENT...EAST CENTRAL TALBOT AND SOUTHERN CAROLINE COUNTIES...

At 245 AM EDT, radar indicated strong thunderstorms were located
along a line extending from Tanyard to near Harrington to Milton.
Movement was northeast at 25 mph.

Winds in excess of 30 mph are possible with these storms.

Heavy rainfall is also occurring with this storm...and may cause
ponding on roadways and poor drainage areas. Do not drive your
vehicle through flooded roadways.

Occasional cloud to ground lightning is occurring with this storm.
Lightning can strike 15 miles away from a thunderstorm. If you see
lightning or hear thunder seek a safe shelter inside a building or
vehicle.

Locations impacted include...
Easton, Georgetown, Cape May, Milford, Denton, Harrington, Lewes,
Milton, Bridgeville, West Cape May, Preston, Ellendale, Bowers,
Smithville, Cape Henlopen State Park, Agner, Andrewsville, Tanyard,
Harmony and Matthews.

LAT...LON 3869 7612 3895 7584 3907 7541 3898 7531
      3891 7531 3879 7516 3878 7512 3880 7509
      3880 7510 3896 7497 3893 7492 3893 7496
      3883 7507 3877 7508 3868 7524 3874 7563
TIME...MOT...LOC 0645Z 225DEG 24KT 3877 7597 3889 7557 3876 7532

Robertson

Special weather statement, May 5, 3:00 AM EDT, 2 hours 50 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
300 AM EDT Sun May 5 2019

DEZ003-004-050730-
Inland Sussex-Delaware Beaches-
300 AM EDT Sun May 5 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN SUSSEX
COUNTY...

At 258 AM EDT, radar indicated strong thunderstorms were located
along a line extending from Georgetown to near Millsboro to near
Selbyville. Movement was northeast at 35 mph.

Winds in excess of 35 mph are possible with these storms.

Heavy rainfall is also occurring with this storm...and may cause
ponding on roadways and poor drainage areas. Do not drive your
vehicle through flooded roadways.

Occasional cloud to ground lightning is occurring with this storm.
Lightning can strike 15 miles away from a thunderstorm. If you see
lightning or hear thunder seek a safe shelter inside a building or
vehicle.

Locations impacted include...
Georgetown, Millsboro, Lewes, Dagsboro, Millville, Henlopen Acres,
Long Neck, Ocean View, Frankford, South Bethany and Dewey Beach.

LAT...LON 3868 7541 3881 7519 3879 7516 3879 7509
      3867 7507 3868 7508 3869 7514 3864 7513
      3863 7508 3865 7506 3862 7506 3862 7515
      3859 7521 3857 7518 3857 7510 3860 7506
      3845 7505 3845 7519
TIME...MOT...LOC 0658Z 211DEG 32KT 3869 7538 3862 7523 3847 7513

Robertson

Local storm report, May 5, 3:48 AM EDT, 2 hours 2 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 9:44 PM EDT	Areal Flood Advisory	PHI	Warren	4 hr
May 5, 1:46 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	4 hr
May 5, 3:26 PM EDT	Gale Warning	PHI		12 hr
May 5, 5:51 AM EDT	Areal Flood Advisory	PHI	Lehigh, Northampton	4 hr
May 5, 7:20 AM EDT	Areal Flood Warning	PHI	Lehigh, Northampton	10 hr
May 5, 2:22 AM EDT	Special Weather Statement	PHI	Sussex	38 min
May 5, 3:00 AM EDT	Special Weather Statement	PHI	Sussex	30 min

Nearby

Coastal Flood Advisories in New Jersey, 2019 Coastal Flood Advisories in Pennsylvania, 2019 Coastal Flood Advisories in Delaware, 2019 Every coastal flood advisory 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.