Alert archive / New Jersey / Areal Flood Advisories in 2020

Areal Flood Advisory 14, NWS Philadelphia/Mount Holly

May 23, 2020Monmouth County, New Jersey

NWS Philadelphia/Mount Holly issued this areal flood advisory at May 23, 2020, 10:18 AM EDT for Monmouth County, New Jersey. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
May 23, 2020, 10:18 AM EDT (14:18 UTC)
Expired
May 23, 2020, 2:15 PM EDT
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

County Monmouth County, NJ

The radar

The Philadelphia radar (KDIX), 44 km from the middle of the area, began a volume at 14:18 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

Brookhaven, NY (KOKX), launched 12:00Z, 2.3 hours before the alert went out and 127 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, Brookhaven, NY at 12:00Z on 2020-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 160 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2020-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 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
160 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
441 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
10 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal 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 areal flood advisory went out at May 23, 10:08 AM EDT, 10 minutes earlier.

Area forecast discussion, May 23, 10:08 AM EDT, 10 minutes before
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Hazardous weather outlook, May 23, 4:06 AM EDT, 6 hours 12 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
406 AM EDT Sat May 23 2020

DEZ001>003-MDZ008-012-015-019-020-NJZ001-007>010-012-013-015>023-027-
PAZ054-055-060>062-070-071-101>106-240815-
New Castle-Kent-Inland Sussex-Cecil-Kent MD-Queen Annes-Talbot-
Caroline-Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-
Western Monmouth-Mercer-Salem-Gloucester-Camden-
Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May-
Southeastern Burlington-Carbon-Monroe-Berks-Lehigh-Northampton-
Delaware-Philadelphia-Western Chester-Eastern Chester-
Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks-
406 AM EDT Sat May 23 2020

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

.DAY ONE...Today and 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.

DEZ004-NJZ014-024>026-240815-
Delaware Beaches-Eastern Monmouth-Atlantic Coastal Cape May-
Coastal Atlantic-Coastal Ocean-
406 AM EDT Sat May 23 2020

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

.DAY ONE...Today and tonight.

There is a moderate risk for the development of dangerous rip
currents today.

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

There is a moderate risk for the development of dangerous rip
currents on Sunday.

.SPOTTER INFORMATION STATEMENT...

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

ANZ430-431-450>455-240815-
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-
406 AM EDT Sat May 23 2020

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

.DAY ONE...Today and 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 23, 6:45 AM EDT, 3 hours 33 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
645 AM EDT Sat May 23 2020

NJZ021>025-231145-
Coastal Atlantic-Cumberland-Atlantic-Atlantic Coastal Cape May-Cape
May-
645 AM EDT Sat May 23 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN ATLANTIC...EAST CENTRAL
CUMBERLAND AND NORTHEASTERN CAPE MAY COUNTIES...

At 644 AM EDT, a strong thunderstorm was located near Estell Manor,
or 12 miles west of Ocean City, moving east at 25 mph.

Wind gusts up to 45 mph and pea size hail are possible with this
storm.

Locations impacted include...
Vineland, Atlantic City, Ocean City, Pleasantville, Somers Point,
Ventnor City, Brigantine, Northfield, Absecon, Margate City,
Woodbine, Sea Isle City, Estell Manor, Port Republic, Longport,
Corbin City, Beesleys Point, Seaville, Dorothy and Dennisville.

This includes the following highways...
 Atlantic City Expressway between mile markers 0 and 16.
 Garden State Parkway between mile markers 19 and 49.

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 3918 7483 3940 7494 3957 7450 3956 7449
      3956 7446 3955 7446 3956 7445 3954 7443
      3956 7443 3918 7434
TIME...MOT...LOC 1044Z 255DEG 20KT 3933 7481

Meola
Special weather statement, May 23, 7:50 AM EDT, 2 hours 28 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
750 AM EDT Sat May 23 2020

NJZ013-019-020-022-026-027-231230-
Northwestern Burlington-Coastal Ocean-Ocean-Western
Monmouth-Atlantic-Southeastern Burlington-
750 AM EDT Sat May 23 2020

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL ATLANTIC...
CENTRAL OCEAN...BURLINGTON AND SOUTHWESTERN MONMOUTH COUNTIES...

At 750 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near Willingboro to near Port Republic.
Movement was east at 20 mph.

Wind gusts up to 40 mph are possible with these storms.

Locations impacted include...
Willingboro, Medford, Barnegat, Hammonton, Lumberton, Mount Holly,
Tabernacle, Shamong, Egg Harbor City, Tuckerton, Presidential Lakes
Estates, Lakehurst, Allentown, Pemberton, Port Republic, Roosevelt,
Wrightstown, Six Flags Theme Park, Leisuretowne and Jacksonville.

This includes the following highways...
 Garden State Parkway between mile markers 49 and 75.
 Interstate 195 in New Jersey between mile markers 9 and 17.
 Interstate 295 in New Jersey between mile markers 44 and 53.
 New Jersey Turnpike near exit 5.

If outdoors, consider seeking shelter inside a building.

LAT...LON 3969 7412 3950 7458 4003 7490 4015 7464
      4014 7459 4017 7461 4024 7445
TIME...MOT...LOC 1150Z 248DEG 18KT 4002 7484 3955 7454

Iovino
Special weather statement, May 23, 8:22 AM EDT, 1 hour 56 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
822 AM EDT Sat May 23 2020

NJZ020-026-027-231300-
Coastal Ocean-Ocean-Southeastern Burlington-
822 AM EDT Sat May 23 2020

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL OCEAN AND EAST
CENTRAL BURLINGTON COUNTIES...

At 822 AM EDT, radar indicated strong thunderstorms were located
along a line extending from Old Halfway to near Beach Haven West.
Movement was northeast at 25 mph.

Wind gusts up to 40 mph are possible with these storms.

Locations impacted include...
Toms River, Lakewood, Barnegat, Beachwood, Seaside Heights,
Lakehurst, Leisure Village, Holiday City South, Pleasant Plains,
Warren Grove, Cedar Glen West, Leisure Village East, Dover Beaches
South, Holiday City-Berkeley, Bamber Lake, Cedar Glen Lakes, Whiting,
Brookville, Pine Ridge At Crestwood and Old Halfway.

This includes Garden State Parkway between mile markers 63 and 88.

If outdoors, consider seeking shelter inside a building.

LAT...LON 4010 7426 3990 7395 3965 7423 3984 7453
TIME...MOT...LOC 1222Z 228DEG 22KT 3984 7446 3971 7425

Iovino
Special weather statement, May 23, 8:50 AM EDT, 1 hour 28 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
850 AM EDT Sat May 23 2020

NJZ013-014-020-026-231345-
Eastern Monmouth-Coastal Ocean-Ocean-Western Monmouth-
850 AM EDT Sat May 23 2020

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN OCEAN AND
SOUTHEASTERN MONMOUTH COUNTIES...

At 848 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near Brookville to 7 miles east of
Barnegat. Movement was northeast at 20 mph.

Wind gusts up to 40 mph are possible with these storms.

Locations impacted include...
Toms River, Lakewood, Beachwood, Manasquan, Point Pleasant Beach,
Seaside Heights, Mantoloking, Leisure Village, Allenwood, Dover
Beaches North, Holiday City South, Pleasant Plains, Leisure Village
East, Dover Beaches South, Holiday City-Berkeley, Bamber Lake,
Ramtown, Brick Township, Leisure Village West-Pine Lake Park and
Cedar Glen West.

This includes Garden State Parkway between mile markers 70 and 96.

If outdoors, consider seeking shelter inside a building.

LAT...LON 4016 7424 4013 7396 3972 7405 3982 7435
TIME...MOT...LOC 1249Z 223DEG 19KT 3983 7429 3977 7409

Iovino
Local storm report, May 23, 9:53 AM EDT, 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
953 AM EDT SAT MAY 23 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0750 AM     FLOOD            1 E SOMERVILLE          40.57N 74.61W
05/23/2020                   SOMERSET           NJ   PUBLIC

            SOME FLOODING REPORTED IN THE SOMERVILLE
            AREA. REPORT FROM MPING.

0755 AM     FLOOD            WHITMAN PARK            39.93N 75.12W
05/23/2020                   CAMDEN             NJ   DEPT OF HIGHWAYS

            FLOODING ON I-676 NORTHBOUND SOUTH OF EXIT
            4. LEFT AND CENTER LANES CLOSED.

0842 AM     FLOOD            1 NW BOUND BROOK        40.58N 74.55W
05/23/2020                   SOMERSET           NJ   DEPT OF HIGHWAYS

            FLOODING ON US 22 WESTBOUND WEST OF
            VOSSELLER AVE. RIGHT AND CENTER LANES
            CLOSED.

0900 AM     FLOOD            PENNSAUKEN              39.95N 75.06W
05/23/2020                   CAMDEN             NJ   DEPT OF HIGHWAYS

            FLOODING ON US 130 BOTH DIRECTIONS AREA
            SOUTH OF BROWNING ROAD. ALL LANES CLOSED AND
            DETOURED.

&&

GORSE
Local storm report, May 23, 10:11 AM EDT, 7 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 23, 3:19 AM EDTSmall Craft AdvisoryPHI54 hr
May 23, 4:41 AM EDTSpecial Weather StatementPHICumberland, Salem49 min
May 23, 6:45 AM EDTSpecial Weather StatementPHIAtlantic60 min
May 23, 7:50 AM EDTSpecial Weather StatementPHIBurlington, Ocean40 min
May 23, 8:22 AM EDTSpecial Weather StatementPHIOcean38 min
May 23, 8:50 AM EDTSpecial Weather StatementPHIOcean55 min
May 23, 10:01 AM EDTAreal Flood WarningPHIMiddlesex, Somerset4 hr

Nearby

Areal Flood Advisories in New Jersey, 2020Every areal flood advisory in 2020

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.