Alert archive / New Jersey / Areal Flood Advisories in 2018

Areal Flood Advisory 228, NWS Philadelphia/Mount Holly

August 11, 2018Atlantic County, Cumberland County, New Jersey

NWS Philadelphia/Mount Holly issued this areal flood advisory at Aug 11, 2018, 7:35 PM EDT for Atlantic County, Cumberland County, New Jersey. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Aug 11, 2018, 7:35 PM EDT (23:35 UTC)
Expired
Aug 11, 2018, 10:30 PM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Atlantic County, NJ, Cumberland County, NJ

The radar

The Philadelphia radar (KDIX), 73 km from the middle of the area, began a volume at 23:36 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, 11.6 hours before the alert went out and 169 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 2018-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1571 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, Wallops Is Stn, VA at 12:00Z on 2018-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 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
1571 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
1008 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

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 Aug 11, 3:55 PM EDT, 3 hours 40 minutes earlier.

Area forecast discussion, Aug 11, 3:55 PM EDT, 3 hours 40 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
355 PM EDT Sat Aug 11 2018

.SYNOPSIS...
A stationary frontal boundary will remain in place across the region
through the beginning of next week. A series of disturbances will
interact with this boundary to produce unsettled weather during this
period. A low pressure system will develop and move northeastward
pushing the front out to sea on Tuesday giving way to drier weather
Wednesday and Thursday. Another frontal system will approach the
region from the west by the end of the week.

&&

.NEAR TERM /UNTIL 6 AM SUNDAY MORNING/...
Very complicated and unsettled weather pattern this afternoon and
this evening across the area. Two frontal boundaries are in place
across the east coast this afternoon. One is located offshore of the
New Jersey coast, southward across Delaware and Maryland. Another is
slowly sagging toward the area from the northwest. The fronts will
not move significantly through tonight and end up stalling across
the east coast. In between the two, widespread showers and
thunderstorms have developed this afternoon with daytime instability
and multiple short wave/vorticity impulses moving across the area.
CAPE values built to 1,000-2,000 J/kg across much of the area, with
even higher values across areas farther south. There remains little
in the way of bulk shear across the area, so widespread severe
thunderstorms are not expected. However, with the instability, any
storms that build tall enough could produce some locally gusty winds.

The main concern going through the remainder of the afternoon into
this evening will be the potential for heavy rain and slow
moving/training storms. PW values remain near 2 inches, and the flow
aloft remains weak. So storm motions will overall not be very quick
moving, so heavy rainfall accumulations is possible for some areas.
The Flash Flood Watch remains in effect for those areas where it was
previously, although even those areas not in the Watch could still
experience heavy rain at times this afternoon and evening.

The heaviest of the rain is expected to end later this evening and
toward midnight as the strong short wave/vorticity impulses move to
our northeast. There will still remain a chance of scattered showers
or thunderstorms during the overnight as the air remains very moist.
There may also be some patchy fog/stratus develop late tonight and
toward daybreak Sunday as well due to the added moisture from the
rainfall, light winds, and possible scattered clearing.

&&

.SHORT TERM /6 AM SUNDAY MORNING THROUGH 6 PM SUNDAY/...
Any fog/stratus is expected to begin lifting after sunrise, but may
take a couple of hours to completely burn off/lift. After that
showers and thunderstorms are likely to develop across the area
again during the day Sunday. The frontal boundaries are expected to
remain nearly stationary across the east coast during the day
Sunday. Waves of low pressure are expected to develop along the
front and move toward the area, while several short wave/vorticity
impulses move across the area as well. The short waves are not
forecast to be as strong as Saturday, so the showers and
thunderstorms may not be as widespread. However, with PW values
remaining just below 2 inches, any showers/thunderstorms could
produce locally heavy rainfall.

&&

.LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/...
Sunday night through Monday night...
An upper low is expected to cutoff and become nearly stationary
over the OH-PA-WV border Sunday night through Monday night. At
the surface, models generally keep the quasi-stationary front
near the northern Mid- Atlantic coast as the boundary meanders
somewhere between the I-95 corridor and the coast waters during
this time. The exact location of this boundary will be important
as this will likely be the focus for organized convection and
heavy rainfall once again early next week. Owing to the stagnant
synoptic pattern and prolonged risk of heavy rainfall, it's a
bit challenging to narrow down the time window when the risk for
flash flooding will be greatest. With that said, there is
particular concern for another episode of at least localized
flash flooding during peak heating hours Monday (late morning
thru mid evening). We will continue to highlight this potential
hazard in the HWO and may eventually issue yet another Flash
Flood Watch.

Tuesday through Saturday...
Tuesday begins with a closed upper low progressing slowly
northeastward over Pennsylvania. This low begins to open and
eject toward New England by late Wednesday as a shortwave passes
quickly eastward across eastern Canada. As it does so, a weak
surface low will develop and move northeastward toward New
England which will push the nearly stationary frontal boundary
out to sea. Given the expected location of the low pressure
system just to our north and west, went ahead and pushed PoPs to
low-end likely for our northern and western-most counties on
Tuesday with chance PoPs elsewhere. Expecting coverage of
showers and thunderstorms to be the greatest in these areas.

After the boundary moves out to sea, precip chances diminish
significantly through mid-week, especially Wednesday, as brief upper
ridging passes over the area. Temperatures should generally remain a
few degrees above normal for the period. Expect highs in the upper
80s south and lower 80s toward the northwest with lows in the lower
70s south and mid 60s toward the north and west. A shortwave trough
and accompanying surface low and cold front look to approach the
area by late next week from the Great lakes region. This will bring
the return for diurnal showers and thunderstorms for Friday and
Saturday.

&&

.AVIATION /20Z SATURDAY THROUGH THURSDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

This afternoon and Tonight...Showers and thunderstorms will continue
to develop across the area through this afternoon into this evening.
Heavy rainfall will occur and likely reduce visibilities to IFR.
Ceilings will remain VFR, or MVFR with heaviest showers or
thunderstorms.

Thunderstorms are expected to diminish after sunset, and widespread
shower activity is expected to diminish by 05z. Once showers end,
some fog/stratus may develop late tonight into early morning Sunday
and reduce conditions to MVFR, or IFR in some locations.

Winds will be variable in and around thunderstorms, but the overall
flow is expected to be from the east to southeast around 5-10 knots,
then becoming light and variable overnight.

Sunday...Fog and stratus may begin the day across much of the area,
but will begin to lift and dissipate after sunrise Sunday. Then
VFR conditions are expected for much of the day. However, there
is a chance of showers and thunderstorms, especially during the
afternoon, which could temporarily lead to lower conditions.
Winds on Sunday are expected to be from the east around 5-10
knots.

OUTLOOK...

Sunday night through Tuesday...Variable conditions though VFR should
generally prevail outside of showers and storms. However, with
numerous rounds of showers and storms expected, temporary MVFR or
IFR restrictions possible when terminals experience a direct impact
from convection. Additionally, a more extended period of MVFR CIGs
in low clouds and fog are possible both Sunday night and Monday
night. Winds speeds will be light with a variable direction (E-NE
Sunday night, becoming S-SE Monday afternoon or night and then W on
Tuesday. Low confidence with timing of restrictions from showers and
storms.

Tuesday night through Thursday... General improvement to VFR Tuesday
night. Showers and storms return to the forecast Thursday,
particularly late in the day and over western terminals. W winds 5-
15 kt, becoming S-SW 5-10 kt on Thursday. Moderate confidence.

&&

.MARINE...
Conditions expected to remain below advisory levels tonight through
Sunday, although winds could gust around 20 knots at times this
afternoon and tonight.

Showers/thunderstorms are expected, which will lead to locally
higher winds and waves.

OUTLOOK...

Sunday night through Thursday...Winds and seas generally below SCA
criteria. However, locally higher winds and seas possible with
storms Sunday night through Tuesday.

Rip Currents...

There is a low risk for the development of dangerous rip
currents at New Jersey and Delaware beaches through the
remainder of the weekend.

&&

.TIDES/COASTAL FLOODING...
The combination of the new moon and astronomically higher tides
will result in widespread minor coastal flooding tonight. The
main threat will occur with the high tide cycles this evening
and tonight upper Delaware Bay and tidal Delaware River, which
is the higher of the two tide cycles. A Coastal Flood Advisory
remains in effect for all coastal areas, the NJ and DE
oceanfront, the back bays, Raritan Bay, Delaware Bay, and the
tidal Delaware River due to the widespread minor coastal
flooding anticipated tonight.

There remains the potential for minor coastal flooding with the
evening high tide cycles at least Sunday night, and possibly
Monday night as well.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Flash Flood Watch until 1 AM EDT Sunday for PAZ054-055-060>062-
     070-071-101>106.
     Coastal Flood Advisory from 1 AM to 5 AM EDT Sunday for PAZ070-
     071-106.
NJ...Flash Flood Watch until 1 AM EDT Sunday for NJZ001-007>010-
     012>022-025>027.
     Coastal Flood Advisory from 7 PM this evening to 1 AM EDT
     Sunday for NJZ012>014-020>027.
     Coastal Flood Advisory from 10 PM this evening to 2 AM EDT
     Sunday for NJZ016.
     Coastal Flood Advisory from 1 AM to 5 AM EDT Sunday for NJZ015-
     017>019.
DE...Flash Flood Watch until 1 AM EDT Sunday for DEZ001-002.
     Coastal Flood Advisory from 7 PM this evening to 1 AM EDT
     Sunday for DEZ002>004.
     Coastal Flood Advisory from 10 PM this evening to 2 AM EDT
     Sunday for DEZ001.
MD...Flash Flood Watch until 1 AM EDT Sunday for MDZ008-012-015.
MARINE...None.

&&

Synopsis...Staarmann
Near Term...Robertson
Short Term...Robertson
Long Term...Klein/Staarmann
Aviation...Klein/Robertson
Marine...Klein/Robertson
Tides/Coastal Flooding...
Hazardous weather outlook, Aug 11, 4:33 AM EDT, 15 hours 2 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
433 AM EDT Sat Aug 11 2018

NJZ001-007>010-PAZ054-055-060>062-101>105-120845-
Sussex-Warren-Morris-Hunterdon-Somerset-Carbon-Monroe-Berks-Lehigh-
Northampton-Western Chester-Eastern Chester-Western Montgomery-
Eastern Montgomery-Upper Bucks-
433 AM EDT Sat Aug 11 2018

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...

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

.DAY ONE...Today and 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.

Heavy rain with any showers and thunderstorms could lead to
localized flooding Sunday and Monday.

.SPOTTER INFORMATION STATEMENT...

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

NJZ015-017>019-PAZ070-071-106-120845-
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Lower Bucks-
433 AM EDT Sat Aug 11 2018

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 1 AM TO 5 AM EDT SUNDAY...

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

.DAY ONE...Today and 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.
   Coastal Flood Advisory.

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

Minor tidal flooding is possible around the time of the evening high
tide on Sunday.

Heavy rain with any showers and thunderstorms could lead to
localized flooding Sunday and Monday.

.SPOTTER INFORMATION STATEMENT...

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

DEZ001-NJZ016-120845-
New Castle-Salem-
433 AM EDT Sat Aug 11 2018

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 2 AM
EDT SUNDAY...

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

.DAY ONE...Today and 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.
   Coastal Flood Advisory.

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

Minor tidal flooding is possible around the time of the evening high
tide on Sunday.

Heavy rain with any showers and thunderstorms could lead to
localized flooding Sunday and Monday.

.SPOTTER INFORMATION STATEMENT...

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

NJZ012>014-120845-
Middlesex-Western Monmouth-Eastern Monmouth-
433 AM EDT Sat Aug 11 2018

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 1 AM
EDT SUNDAY...

This Hazardous Weather Outlook is for central New Jersey and
northern New Jersey.

.DAY ONE...Today and 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.
   Coastal Flood Advisory.

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

Minor tidal flooding is possible around the time of the evening high
tide on Sunday.

Heavy rain with any showers and thunderstorms could lead to
localized flooding Sunday and Monday.

.SPOTTER INFORMATION STATEMENT...

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

DEZ002>004-NJZ020>027-120845-
Kent-Inland Sussex-Delaware Beaches-Ocean-Cumberland-Atlantic-
Cape May-Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean-
Southeastern Burlington-
433 AM EDT Sat Aug 11 2018

...COASTAL FLOOD ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 1 AM
EDT SUNDAY...

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

.DAY ONE...Today and Tonight.

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

   Coastal Flood Advisory.

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

Minor tidal flooding is possible around the time of the evening high
tide on Sunday.

Heavy rain with any showers and thunderstorms could lead to
localized flooding Sunday and Monday.

.SPOTTER INFORMATION STATEMENT...

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

MDZ008-012-015-019-020-120845-
Cecil-Kent MD-Queen Annes-Talbot-Caroline-
433 AM EDT Sat Aug 11 2018

This Hazardous Weather Outlook is for northeast Maryland.

.DAY ONE...Today and Tonight.

The probability of widespread hazardous weather is low.

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

Heavy rain with any showers and thunderstorms could lead to
localized flooding Sunday and Monday.

.SPOTTER INFORMATION STATEMENT...

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

ANZ430-431-450>455-120845-
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-
433 AM EDT Sat Aug 11 2018

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.

CMS

In the hours before

Local storm report, Aug 11, 5:54 PM EDT, 1 hour 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
554 PM EDT SAT AUG 11 2018

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

0408 PM     FLOOD            1 ENE SUCCASUNNA        40.86N  74.63W
08/11/2018                   MORRIS             NJ   SOCIAL MEDIA

            TWO VEHICLES TRAPPED IN FLOOD WATERS AT THE
            INTERSECTION OF ROUTE 10 AND SUSSEX TURNPIKE.

&&

EVENT NUMBER PHI1801253

STAARMANN
Local storm report, Aug 11, 6:12 PM EDT, 1 hour 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
612 PM EDT SAT AUG 11 2018

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

0325 PM     FLASH FLOOD      1 NE LOWER MILFORD TWP  40.48N  75.46W
08/11/2018                   LEHIGH             PA   DEPT OF HIGHWAYS

            LANDSLIDE ON I-476 WESTBOUND. ALL WESTBOUND LANES
            CLOSED.

&&

EVENT NUMBER PHI1801254

STAARMANN
Special weather statement, Aug 11, 6:13 PM EDT, 1 hour 22 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
613 PM EDT SAT AUG 11 2018

PAZ101-102-112245-
Western Chester-Eastern Chester-
613 PM EDT SAT AUG 11 2018

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN CHESTER COUNTY...

At 613 PM EDT, a strong thunderstorm was located near Cochranville,
or 13 miles southeast of New Holland, moving southeast at 25 mph.

Winds up to 40 mph and pea size hail are possible with this storm.

This storm will be near...
  Cochranville around 620 PM EDT.
  Coatesville around 625 PM EDT.
  West Grove around 635 PM EDT.
  Kennett Square, North Star, Ladenberg and Marshallton around 645
  PM EDT.

Other locations impacted by this storm include Toughkenamon, South
Coatesville, Modena, Avondale, Atglen, Thorndale, Christiana and West
Goshen.

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

Frequent cloud to ground lightning is also occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3987 7599 3992 7600 3994 7598 3995 7600
      4006 7593 3999 7573 3995 7552 3993 7552
      3993 7554 3988 7559 3984 7559 3981 7570
      3974 7577 3983 7604
TIME...MOT...LOC 2213Z 293DEG 21KT 3993 7596

JRK
Local storm report, Aug 11, 6:43 PM EDT, 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
643 PM EDT SAT AUG 11 2018

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

0300 PM     FLASH FLOOD      MILFORD TWP             40.42N  75.41W
08/11/2018                   BUCKS              PA   COUNTY OFFICIAL

            WIDESPREAD FLOODING AND FLASH FLOODING ONGOING IN
            NORTHWESTERN BUCKS COUNTY. NUMEROUS ROADS AND BRIDGES
            FLOODED OR WASHED OUT BY FAST MOVING FLOOD WATERS. SOME
            RESIDENTS ARE BEING EVACUATED AWAY FROM QUICKLY RISING
            CREEKS AND STREAMS.

&&

EVENT NUMBER PHI1801255

STAARMANN
Local storm report, Aug 11, 7:20 PM EDT, 15 minutes before
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Local storm report, Aug 11, 7:22 PM EDT, 13 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
722 PM EDT SAT AUG 11 2018

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

0211 AM     COASTAL FLOOD    WESTVILLE               39.87N  75.13W
08/11/2018                   GLOUCESTER         NJ   DEPT OF HIGHWAYS

            STATE HIGHWAY 47 CLOSED NEAR BROADWAY AVENUE FROM TIDAL
            FLOODING OF THE DELAWARE RIVER.

0305 AM     COASTAL FLOOD    BROOKLAWN               39.88N  75.12W
08/11/2018                   CAMDEN             NJ   DEPT OF HIGHWAYS

            U.S. HIGHWAY 130 SOUTHBOUND CLOSED NEAR COUNTY ROAD 551
            FROM TIDAL FLOODING OF THE DELAWARE RIVER.

0553 AM     FLASH FLOOD      GARFIELD                40.43N  76.04W
08/11/2018                   BERKS              PA   SOCIAL MEDIA

            VEHICLE STUCK IN FLOOD WATERS AND A WATER RESCUE IN
            PROGRESS AT PLUM CREEK ROAD AND BLOOMSBURG ROAD IN PENN
            TWP.

0618 AM     FLOOD            1 WSW WASHINGTON        40.76N  74.99W
08/11/2018                   WARREN             NJ   SOCIAL MEDIA

            FLOODING ON WEST WASHINGTON AVENUE IN WASHINGTON BORO.

0623 AM     FLOOD            1 SE DAUBERVILLE        40.46N  75.97W
08/11/2018                   BERKS              PA   DEPT OF HIGHWAYS

            FLOODING ON STATE HIGHWAY 61 BETWEEN INDIAN MANOR ROAD
            AND BELLEMANS CHURCH ROAD. ALL LANES CLOSED.

0705 AM     FLASH FLOOD      1 NE NORTH PLAINFIELD   40.63N  74.43W
08/11/2018                   SOMERSET           NJ   CO-OP OBSERVER

            MULTIPLE WATER RESCUES OCCURING AT ROUTE 22 AND
            WESTERVELT AVE.

0726 AM     FLASH FLOOD      1 E NORTH PLAINFIELD    40.62N  74.43W
08/11/2018                   SOMERSET           NJ   911 CALL CENTER

            WATER RESCUES OCCURING AT WATCHUNG AVENUE AND PEARL
            STREET.

0819 AM     FLOOD            1 NNW MELROSE           40.50N  74.30W
08/11/2018                   MIDDLESEX          NJ   DEPT OF HIGHWAYS

            GARDEN STATE PARKWAY NORTHBOUND CLOSED AT EXIT 125 -
            CHEVALIER AVENUE. 2 RIGHT LANES BLOCKED DUE TO FLOODING.

1111 AM     FLOOD            1 ESE BRIDLE RUN        40.32N  75.30W
08/11/2018                   BUCKS              PA   DEPT OF HIGHWAYS

            FLOODING IMPACTING BOTH DIRECTIONS OF PA 113 AT
            BETHLEHEM PIKE.

1224 PM     MARINE TSTM WIND SHIP JOHN SHOAL NOS     39.30N  75.38W
08/11/2018  M48 MPH          ANZ430             NJ   NOS PLATFORM

0109 PM     FLOOD            SOMERS POINT            39.32N  74.60W
08/11/2018                   ATLANTIC           NJ   SOCIAL MEDIA

            REPORT WITH PICUTRES OF NEIGHBORHOOD ROADS COVERED IN
            ABOUT A FOOT OF WATER IN SOMERS POINT.

0142 PM     HAIL             KING OF PRUSSIA         40.09N  75.40W
08/11/2018  E0.75 INCH       MONTGOMERY         PA   SOCIAL MEDIA

            DIME SIZE HAIL IN KING OF PRUSSIA. TIME ESTIMATED FROM
            RADAR.

0152 PM     MARINE TSTM WIND OCEAN CITY              39.22N  74.64W
08/11/2018  M46 MPH          CAPE MAY           NJ   WXFLOW

0203 PM     FLASH FLOOD      WASHINGTON PARK         40.10N  75.38W
08/11/2018                   MONTGOMERY         PA   SOCIAL MEDIA

            WATER RESUCE ON CROSSFIELD ROAD.

0208 PM     FLOOD            HAVERFORD VILLAGE       40.00N  75.31W
08/11/2018                   DELAWARE           PA   TRAINED SPOTTER

            HAVERFORD ROAD IS COMPLETELY FLOODED IN ARDMORE TWP.

0224 PM     MARINE TSTM WIND BRANDYWINE SHOAL NOS    38.99N  75.11W
08/11/2018  M43 MPH          ANZ431             NJ   NOS PLATFORM

0232 PM     MARINE TSTM WIND CAPE MAY                38.97N  74.96W
08/11/2018  M43 MPH          CAPE MAY           NJ   WXFLOW

0234 PM     FLOOD            PENCOYD                 40.01N  75.21W
08/11/2018                   MONTGOMERY         PA   DEPT OF HIGHWAYS

            FLOODING ON I-76 WESTBOUND AT EXIT 339.

0235 PM     MARINE TSTM WIND OCEAN CITY              39.22N  74.64W
08/11/2018  M43 MPH          CAPE MAY           NJ   WXFLOW

0236 PM     MARINE TSTM WIND 2 N SEA ISLE CITY       39.17N  74.70W
08/11/2018  M39 MPH          ANZ453             NJ   WEATHERFLOW

0248 PM     MARINE TSTM WIND SHIP JOHN SHOAL NOS     39.30N  75.38W
08/11/2018  M43 MPH          ANZ430             NJ   NOS PLATFORM

0250 PM     FLOOD            2 ESE PALERMO           39.23N  74.63W
08/11/2018                   CAPE MAY           NJ   TRAINED SPOTTER

            STREET FLOODING ALONG WEST AVENUE FROM 52ND STREET TO
            55TH STREET. SOME INTERSECTIONS IMPASSABLE.

0300 PM     FLASH FLOOD      MILFORD TWP             40.42N  75.41W
08/11/2018                   BUCKS              PA   COUNTY OFFICIAL

            WIDESPREAD FLOODING AND FLASH FLOODING ONGOING IN
            NORTHWESTERN BUCKS COUNTY. NUMEROUS ROADS AND BRIDGES
            FLOODED OR WASHED OUT BY FAST MOVING FLOOD WATERS. SOME
            RESIDENTS ARE BEING EVACUATED AWAY FROM QUICKLY RISING
            CREEKS AND STREAMS.

0325 PM     FLASH FLOOD      1 NE LOWER MILFORD TWP  40.48N  75.46W
08/11/2018                   LEHIGH             PA   DEPT OF HIGHWAYS

            LANDSLIDE ON I-476 WESTBOUND. ALL WESTBOUND LANES
            CLOSED.

0341 PM     FLOOD            1 ESE BEN FRANKLIN BRID 39.95N  75.12W
08/11/2018                   CAMDEN             NJ   DEPT OF HIGHWAYS

            RIVER LINE RAIL LINE CLOSED IN BOTH DIRECTIONS BETWEEN
            WALTER RAND TRANSPORTATION CENTER AND WATERFRONT
            ENTERTAINMENT CENTER STATIONS DUE TO FLOODING. CORRECTED
            TIME.

0408 PM     FLOOD            1 ENE SUCCASUNNA        40.86N  74.63W
08/11/2018                   MORRIS             NJ   SOCIAL MEDIA

            TWO VEHICLES TRAPPED IN FLOOD WATERS AT THE
            INTERSECTION OF ROUTE 10 AND SUSSEX TURNPIKE.

0410 PM     FLOOD            UPPER SAUCON TWP        40.54N  75.42W
08/11/2018                   LEHIGH             PA   COUNTY OFFICIAL

            NUMEROUS REPORTS OF FLOODING ACROSS UPPER SAUCON TWP,
            COOPERSBURG, AND LOWER MILFORD TWP WITHIN THE LAST HOUR.

0420 PM     HEAVY RAIN       SPRINGTOWN              40.56N  75.29W
08/11/2018  M2.91 INCH       BUCKS              PA   CO-OP OBSERVER

            OBSERVED RAINFALL SINCE 7AM EDT. THIS IS IN ADDITION TO
            1.14 INCHES THAT FELL BEFORE 7AM EDT. VALUE CORRECTED
            FROM PREVIOUS LSR.

&&

EVENT NUMBER PHI1801228 PHI1801229 PHI1801230 PHI1801231 PHI1801232
PHI1801233 PHI1801234 PHI1801235 PHI1801240 PHI1801244 PHI1801237
PHI1801241 PHI1801245 PHI1801238 PHI1801236 PHI1801246 PHI1801247
PHI1801239 PHI1801248 PHI1801249 PHI1801250 PHI1801251 PHI1801255
PHI1801254 PHI1801243 PHI1801253 PHI1801252 PHI1801242

Staarmann

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 3:24 AM EDTFlash Flood WatchPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Hunterdon and 9 more20 hr
Aug 11, 4:26 AM EDTCoastal Flood AdvisoryPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more24 hr
Aug 11, 5:27 AM EDTAreal Flood AdvisoryPHIHunterdon, Morris, Warren4 hr
Aug 11, 6:06 AM EDTAreal Flood AdvisoryPHIHunterdon, Warren6 hr
Aug 11, 6:31 AM EDTAreal Flood AdvisoryPHIHunterdon, Mercer, Middlesex, Morris, Somerset7 hr
Aug 11, 7:16 AM EDTFlash Flood WarningPHIMiddlesex, Somerset4 hr
Aug 11, 10:49 AM EDTAreal Flood AdvisoryPHIMiddlesex, Somerset3 hr
Aug 11, 11:29 AM EDTAreal Flood AdvisoryPHIAtlantic4 hr
Aug 11, 11:46 AM EDTSpecial Marine WarningPHI119 min
Aug 11, 11:55 AM EDTSpecial Weather StatementPHIBurlington35 min
Aug 11, 12:27 PM EDTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester, Ocean4 hr
Aug 11, 12:39 PM EDTSpecial Weather StatementPHIOcean36 min
Aug 11, 12:55 PM EDTSpecial Marine WarningPHI65 min
Aug 11, 1:07 PM EDTFlash Flood WarningPHIAtlantic, Cape May4 hr
Aug 11, 1:26 PM EDTSpecial Marine WarningPHI2 hr
Aug 11, 1:42 PM EDTSpecial Marine WarningPHI2 hr
Aug 11, 1:51 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden39 min
Aug 11, 2:00 PM EDTFlash Flood WarningPHIWarren9 hr
Aug 11, 2:05 PM EDTSpecial Weather StatementPHICape May25 min
Aug 11, 2:06 PM EDTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester3 hr
Aug 11, 2:19 PM EDTSpecial Marine WarningPHI86 min
Aug 11, 2:20 PM EDTAreal Flood AdvisoryPHICape May, Cumberland3 hr
Aug 11, 2:30 PM EDTFlash Flood WarningPHIHunterdon, Morris, Warren3 hr
Aug 11, 2:46 PM EDTFlash Flood WarningPHIHunterdon, Mercer, Middlesex, Morris, Somerset3 hr
Aug 11, 2:58 PM EDTSpecial Weather StatementPHICumberland47 min
Aug 11, 3:06 PM EDTFlash Flood WarningPHIWarren4 hr
Aug 11, 3:13 PM EDTSpecial Weather StatementPHIHunterdon47 min
Aug 11, 3:23 PM EDTAreal Flood AdvisoryPHIMorris, Sussex3 hr
Aug 11, 3:24 PM EDTSpecial Weather StatementPHIAtlantic, Cumberland51 min
Aug 11, 3:32 PM EDTFlash Flood WarningPHIAtlantic3 hr
Aug 11, 3:47 PM EDTFlash Flood WarningPHIMorris3 hr
Aug 11, 4:11 PM EDTSpecial Marine WarningPHI2 hr
Aug 11, 4:28 PM EDTSpecial Marine WarningPHI2 hr
Aug 11, 5:00 PM EDTAreal Flood AdvisoryPHIGloucester, Salem3 hr
Aug 11, 5:26 PM EDTAreal Flood AdvisoryPHIHunterdon, Morris, Warren4 hr
Aug 11, 5:36 PM EDTAreal Flood WarningPHIHunterdon, Mercer, Middlesex, Morris, Somerset4 hr
Aug 11, 6:11 PM EDTSpecial Marine WarningPHI2 hr
Aug 11, 6:12 PM EDTFlash Flood WarningPHISalem3 hr
Aug 11, 7:46 PM EDTRiver Flood WarningPHIEssex, Morris, Passaic4 days
Aug 11, 2:25 AM EDTSpecial Weather StatementPHIBerks65 min
Aug 11, 3:26 AM EDTSpecial Weather StatementPHIBerks64 min
Aug 11, 4:17 AM EDTAreal Flood AdvisoryPHIBerks4 hr
Aug 11, 5:19 AM EDTFlash Flood WarningPHIBerks3 hr
Aug 11, 12:16 PM EDTSpecial Weather StatementPHIChester29 min
Aug 11, 12:48 PM EDTAreal Flood AdvisoryPHIChester3 hr
Aug 11, 1:20 PM EDTAreal Flood AdvisoryPHIChester, Montgomery3 hr
Aug 11, 1:33 PM EDTFlash Flood WarningPHIChester, Montgomery4 hr
Aug 11, 1:40 PM EDTFlash Flood WarningPHIChester4 hr
Aug 11, 1:48 PM EDTFlash Flood WarningPHIDelaware, Philadelphia4 hr
Aug 11, 2:14 PM EDTFlash Flood WarningPHIBucks3 hr
Aug 11, 2:26 PM EDTSpecial Weather StatementPHIBucks, Philadelphia34 min
Aug 11, 2:42 PM EDTSpecial Weather StatementPHIBucks33 min
Aug 11, 3:50 PM EDTAreal Flood AdvisoryPHIBerks, Montgomery115 min
Aug 11, 4:19 PM EDTAreal Flood AdvisoryPHIChester3 hr
Aug 11, 4:19 PM EDTSevere Thunderstorm WarningPHIChester29 min
Aug 11, 4:47 PM EDTSpecial Weather StatementPHIMontgomery28 min
Aug 11, 4:52 PM EDTAreal Flood AdvisoryPHICarbon, Lehigh2 hr
Aug 11, 5:58 PM EDTAreal Flood AdvisoryPHIChester, Delaware, Montgomery, Philadelphia5 hr
Aug 11, 6:13 PM EDTSpecial Weather StatementPHIChester32 min
Aug 11, 1:23 PM EDTSevere Thunderstorm WarningPHISussex37 min
Aug 11, 5:20 PM EDTAreal Flood AdvisoryPHIKent, New Castle4 hr
Aug 11, 6:08 PM EDTSevere Thunderstorm WarningPHIKent, New Castle52 min
Aug 11, 6:45 PM EDTFlash Flood WarningPHIKent5 hr
Aug 11, 6:55 PM EDTSevere Thunderstorm WarningPHIKent50 min
Aug 11, 7:42 PM EDTSpecial Weather StatementPHIKent48 min

Nearby

Areal Flood Advisories in New Jersey, 2018Every areal flood advisory in 2018

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.