Alert archive / New Jersey / Special Marine Warnings in 2020

Special Marine Warning 98, NWS Philadelphia/Mount Holly

August 4, 2020

NWS Philadelphia/Mount Holly issued this special marine warning at Aug 4, 2020, 9:28 AM EDT. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 4, 2020, 9:28 AM EDT (13:28 UTC)
Expired
Aug 4, 2020, 10:00 AM EDT
In force
32 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
0.0 in
Wind
34.0 mph

What forecasters said that day

The local office's own words before this special marine warning 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 special marine warning went out at Aug 4, 9:15 AM EDT, 13 minutes earlier.

Area forecast discussion, Aug 4, 9:15 AM EDT, 13 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
915 AM EDT Tue Aug 4 2020

.SYNOPSIS...
Tropical Cyclone Isaias is expected to move north and reach the
Mid Atlantic later Tuesday. Isaias will move toward New England
by Wednesday. High pressure will build in to our north later
this week into this weekend while a weak front lingers to our
south.

&&

.NEAR TERM /THROUGH TONIGHT/...
Tornado Watch expanded to include all of New Jersey and most of
southeast Pennsylvania.

Significant impacts from Isaias will continue to affect the
region today.

Isaias is located just over eastern Virginia and is crossing the
Chesapeake Bay. Several tornadoes have occurred across portions
of Delmarva already, and this threat continues throughout the
day.

Lift across the area is being aided by a strengthening upper
jet over western PA / NY as the area is in the favorable right
entrance region. There is also low level convergence associated
with a lingering weak front across the area. There remains
sufficient instability with also very strong low level shear.
For this reason, locally damaging winds will be possible and
even a couple isolated tornadoes given the strong low level SRH
and lowering LCLs. Best chances for this will be for Delmarva,
SE PA, and central and southern NJ but this threat will spread
north through this morning.

By mid to late morning is when condition deteriorate further as
Isaias quickly advances towards the area. Tropical Cyclone
Isaias will speed quickly northward in response to a strong jet
streak passing through the region. Forecast models and the NHC
remain consistent in tracking the storm right through the heart
of the CWA near the urban corridor. It will also be starting to
undergo extratropical transition as it moves through our region.
The main timeframe of concern for the storm's strong winds,
heaviest rainfall and other associated impacts is mid/late
morning through much of the afternoon before the storm exits by
early this evening.

Multiple hazards with Isaias are expected including, but not
limited to, fresh water flooding, coastal flooding/storm surge,
strong winds and isolated tornadoes. The greatest precipitation
amounts are forecast to fall near and especially N/W of the
urban corridor. 3-6 inches of rain with locally higher amounts
up to 8 inches are expected. This will lead to a high flash
flooding threat, especially for the more urbanized areas and
portions of Berks County that received an excessive amount of
rain Sunday morning. In fact the flooding has the potential to
be widespread and significant. There also continues to be
increasing confidence widespread damaging winds will be an
issue...especially near and to the right of the storms track so
basically from the urban corridor S/E. Again, while the system
will be starting to lose its tropical characteristics, because
of the strong baroclinic zone it will be moving into this won't
allow it to really weaken much. Winds will initially be from the
E/SE then shift to NW behind the system. Sustained winds of 50+
mph are likely along the coast with gusts potentially exceeding
hurricane force (74+ mph). Farther N/W towards the I-95
corridor, widespread gusts of 50 to 60+ mph will be possible.
Importantly, it should be noted that because the storm will be
starting to become extratropical, the strongest winds/gusts over
inland areas could be immediately following the passage of the
storms center this afternoon since there will be better mixing
in this quadrant. And finally, the tornado threat: The threat
for isolated tornadoes is beginning to develop over southern
parts of our region during the predawn hours (as described
above) and this will spread north as we go through the rest of
the night into Tuesday morning. Areas near and S/E of urban
corridor will have the best chance for tornadoes.

The trend is for the storm to move through a bit faster than
previously forecast so expect it should be exiting by the
latter part of this afternoon into this evening. Winds/rain
should abate fairly quickly from south to north as this occurs.
Otherwise, Tuesday night should then finally feature quieter
weather though a secondary front and upper level wave could
trigger a few scattered showers.

&&

.SHORT TERM /WEDNESDAY/...
Quieter weather for Wednesday as high pressure starts to build
in to our north. This will bring a mainly dry day with
seasonable temperatures under partly to mostly sunny skies.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/...
A fairly typical but overall quieter summer pattern is expected
for the long term forecast. The mean upper level trough over the
east will lift out but the mid Atlantic region will remain in a
fairly moist W/SW flow regime around high pressure ridging over
the western Atlantic. This will result in chances for scattered
showers/storms most days that will be mainly diurnally driven
meaning the best chances will be in the afternoon and early
evening. Temperatures will be around average for this time of
year.

&&

.AVIATION /13Z TUESDAY THROUGH SATURDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG,
KMIV, KACY and surrounding areas.

Today... A rapid deterioration in conditions is expected from
south to north soon after 12z. MVFR to IFR conditions are
expected through much of the day in association with Hurricane
Isaias. Areas of torrential rainfall with low vsbys are likely.
Strong and erratic winds are expected with a sharp change in
wind direction expected during the mid afternoon. Gusts may be
briefly higher than shown in the TAFs especially near MIV and
ACY. While confidence is low in exact details and timing,
confidence is high in the overall trend, with hazardous aviation
conditions expected for most of the area.

Tonight... Mainly VFR. Southwest winds 10 to 20 kt diminishing to 5
to 10 kt. Moderate confidence.

Outlook...

Wednesday through Saturday...Mostly VFR. Scattered SHRA/TSRA
possible each afternoon/evening that would result in brief sub-
VFR conditions at a given terminal. Fog may develop during the
overnight. West winds less than 10 kt on Wednesday, then east to
northeast Thursday through Saturday. LGT/VRB at night. Moderate
confidence.

&&

.MARINE...
Today and Tonight... Tropical Storm Warnings are in effect as Isaias
moves north through North Carolina. Isaias will continue to head
north and then northeast and approach the area early this morning.
This morning into afternoon sustained winds of 45 to 55 kts appears
likely with gusts up to Hurricane force expected. Heavy rain, and
isolated waterspouts, this morning into early afternoon will give
way to a gradual improving of conditions later this afternoon. Seas
will also build to between 12 and 18 feet over the Atlantic coastal
waters. A slow decrease in seas down towards 5 feet can be expected
by Wednesday morning.

Outlook...

Wednesday morning...Seas may linger near 5 feet on the New Jersey
coastal waters but should subside below advisory criteria by midday.

Wednesday afternoon through Saturday...Sub-advisory winds/seas
expected through the period. Chances of showers/storms through the
period, especially in the afternoon/evening hours.

Rip Currents...

On Tuesday, impacts from Isaias will increase the rip-current risk
level to high. In addition, high surf is expected. A rip
current risk statement and high surf advisory are in effect for
this period, so in conclusion Tuesday will not be a good day to
be at the beach.

The rip current risk will likely remain elevated on Wednesday.

&&

.HYDROLOGY...
Hydro concerns continue early this morning as showers/storms continue
ahead of Isaias. Any of these will be capable of producing heavy
rain with at least localized flash flooding possible. The heaviest,
steadiest rain with the storm will arrive this morning from
south to north with more widespread flash flooding becoming a
big concern during this time. Most susecptible areas will be
near and N/W of the I-95 corridor especially since places such
as in Berks County have received so much rainfall recently. With
Isaias, 3 to 6 inches of rain, with locally higher amounts are
expected. Flooding could be widespread and significant.

In addition to flash flooding, river flooding is also expected. But
with a more consolidated area of rainfall across PA, the threat
across NJ including the Passaic and Raritan basins has lessened. The
latest MARFC forecast still has about 15 forecast points above
Action Stage and 6 at or above Flood Stage, including, Philadelphia,
Norristown, and Pottstown on the Schuylkill, Graterford on Perkiomen
Creek, Langhorne on Neshaminy Creek, and Chadds Ford and Wilmington
on the Brandywine. The latest forecast has these points cresting
later today or tonight. With such a large swath of precipitation
expected along and west of the I95 corridor, most basins in this
area will see at least some threat. That said, the Delaware River is
expected to remain within its banks.

&&

.TIDES/COASTAL FLOODING...
The coastal flooding impacts from Isaias remain very uncertain at
this time. Models notoriously handle fast-moving, intense cyclones
poorly in our area, as the short duration of onshore flow competes
with the strength of the winds. These competing impacts and
sensitivities are not well understood from a modeling standpoint,
leading to rather large spread in the model guidance.

Coastal flooding impacts are expected across the area today, with
four different regions we will be monitoring. The first, and
potentially most significant, is for the eastern shore of Chesapeake
Bay, where surge will likely move northward during the day. What is
unclear, however, is the strength of this surge. Model guidance is
particularly poor for these areas, and the output the past couple of
days seems unrealistically low. However, the extent of impacts
remains quite unclear. At this point, there is potential for
moderate flooding, which requires continuation of the coastal flood
warning. However, it is possible impacts will be less
significant/widespread. We will likely not have a better idea of
impacts until after daybreak, when gauges in lower Chesapeake Bay
begin to respond.

The second area is Delaware Bay. The real question here will be the
timing of the surge relative to the astronomical high tide.
With guidance trending a little faster with the surge, the timing
looks a little less favorable for coincidence of peak surge and
astronomical high tide for the Delaware Bay sites.
Nevertheless, the strength of southeast winds in advance of Isaias
may compensate much more readily than models suggest. A coastal
flood advisory has been issued here for the entire day given the
uncertainty of peak surge timing.

The third area is the tidal Delaware River. Here, confidence is
increasing that minor flooding will occur during the afternoon, as
predecessor southeast winds will likely combine with freshwater
runoff to lead to a period of tidal flooding from early afternoon to
early evening. As with Delaware Bay, confidence is not particularly
high on exact timing of flooding, so have issued a coastal flood
advisory for a broader period of time than normal (11 am to 8 pm).

The fourth area is the Atlantic coast. As with Delaware Bay, timing
of the strongest surge appears to occur between astronomical high
tides. However, the strength of onshore flow and exacerbating
behavior of wave runup will likely produce areas of flooding. Of
particular concern is back bays that are susceptible to southeast
flow, which can act to trap water. Barnegat Bay and Little Assawoman
Bay are particularly susceptible in these regimes, and these areas
may experience more widespread/significant flooding. Confidence is
pretty low in general for the coast, but given the very strong
onshore flow expected today, suspect at least some impacts in the
especially vulnerable spots are likely.

&&

.EQUIPMENT...
The NOAA Weather Radio All-Hazards broadcast from Hibernia Park
Pennsylvania (Station WNG-704) remains off the air.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Flash Flood Watch through this evening for PAZ054-055-060>062-
     070-071-101>106.
     Tropical Storm Warning for PAZ070-071-101>106.
     Coastal Flood Advisory until 8 PM EDT this evening for PAZ070-
     071-106.
NJ...Flash Flood Watch through this evening for NJZ001-007>010-
     012>027.
     Tropical Storm Warning for NJZ001-007>010-012>027.
     Coastal Flood Advisory until 8 PM EDT this evening for NJZ016-
     021-023-024.
     High Rip Current Risk through this evening for NJZ014-024>026.
     Coastal Flood Advisory until 2 AM EDT Wednesday for NJZ012>014-
     020-022-025>027.
     High Surf Advisory until midnight EDT tonight for NJZ014-
     024>026.
     Coastal Flood Advisory until 8 PM EDT this evening for
     NJZ017>019.
DE...Flash Flood Watch through this evening for DEZ001>004.
     Tropical Storm Warning for DEZ001>004.
     Coastal Flood Advisory until 8 PM EDT this evening for
     DEZ001>004.
     High Rip Current Risk through this evening for DEZ004.
     High Surf Advisory until midnight EDT tonight for DEZ004.
MD...Flash Flood Watch through this evening for MDZ008-012-015-019-
     020.
     Tropical Storm Warning for MDZ008-012-015-019-020.
     Coastal Flood Warning until 6 AM EDT Wednesday for MDZ008-012-
     015-019-020.
MARINE...Tropical Storm Warning for ANZ430-431-450>455.
&&

Synopsis...Fitzsimmons
Near Term...Fitzsimmons/MPS
Short Term...Fitzsimmons
Long Term...Fitzsimmons/MPS
Aviation...O'Brien
Marine...CMS
Hydrology...WFO PHI
Tides/Coastal Flooding...WFO PHI
Equipment...WFO PHI
Hazardous weather outlook, Aug 4, 7:25 AM EDT, 2 hours 3 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
725 AM EDT Tue Aug 4 2020

PAZ054-055-060>062-051200-
Carbon-Monroe-Berks-Lehigh-Northampton-
725 AM EDT Tue Aug 4 2020

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...

This Hazardous Weather Outlook is for east central Pennsylvania and
northeast 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...Wednesday through Monday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

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

MDZ008-012-015-019-020-051200-
Cecil-Kent MD-Queen Annes-Talbot-Caroline-
725 AM EDT Tue Aug 4 2020

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...
...TORNADO WATCH 415 IN EFFECT UNTIL NOON EDT TODAY...
...TROPICAL STORM WARNING IN EFFECT...
...COASTAL FLOOD WARNING IN EFFECT FROM 11 AM THIS MORNING TO 6 AM
EDT WEDNESDAY...

This Hazardous Weather Outlook is for northeast Maryland.

.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.
   Tornado Watch.
   Tropical Storm Warning.
   Coastal Flood Warning.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

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

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

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

NJZ001-007>010-015-PAZ101>105-051200-
Sussex-Warren-Morris-Hunterdon-Somerset-Mercer-Western Chester-
Eastern Chester-Western Montgomery-Eastern Montgomery-Upper Bucks-
725 AM EDT Tue Aug 4 2020

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...
...TORNADO WATCH 416 IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for central New Jersey, northern
New Jersey, northwest 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.
   Tornado Watch.
   Tropical Storm Warning.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

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

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

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

NJZ017>019-PAZ070-071-106-051200-
Gloucester-Camden-Northwestern Burlington-Delaware-Philadelphia-
Lower Bucks-
725 AM EDT Tue Aug 4 2020

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...
...TORNADO WATCH 416 IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...TROPICAL STORM WARNING IN EFFECT...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 8 PM
EDT THIS EVENING...

This Hazardous Weather Outlook is for 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.
   Tornado Watch.
   Tropical Storm Warning.
   Coastal Flood Advisory.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

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

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

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

DEZ001>003-NJZ016-021-023-051200-
New Castle-Kent-Inland Sussex-Salem-Cumberland-Cape May-
725 AM EDT Tue Aug 4 2020

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...
...TORNADO WATCH 415 IN EFFECT UNTIL NOON EDT TODAY...
...TROPICAL STORM WARNING IN EFFECT...
...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for central Delaware, northern
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.

   Flash Flood Watch.
   Tornado Watch.
   Tropical Storm Warning.
   Coastal Flood Advisory.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

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

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

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

NJZ012-013-020-022-027-051200-
Middlesex-Western Monmouth-Ocean-Atlantic-Southeastern Burlington-
725 AM EDT Tue Aug 4 2020

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...
...TORNADO WATCH 416 IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...TROPICAL STORM WARNING IN EFFECT...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 2 AM
EDT WEDNESDAY...

This Hazardous Weather Outlook is for central New Jersey, northern
New Jersey 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.
   Tornado Watch.
   Tropical Storm Warning.
   Coastal Flood Advisory.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

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

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

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

NJZ014-025-026-051200-
Eastern Monmouth-Coastal Atlantic-Coastal Ocean-
725 AM EDT Tue Aug 4 2020

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...
...TORNADO WATCH 416 IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...TROPICAL STORM WARNING IN EFFECT...
...HIGH SURF ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...HIGH RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 2 AM
EDT WEDNESDAY...

This Hazardous Weather Outlook is for central New Jersey 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.
   Tornado Watch.
   Tropical Storm Warning.
   High Rip Current Risk.
   High Surf Advisory.
   Coastal Flood Advisory.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

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

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

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

DEZ004-NJZ024-051200-
Delaware Beaches-Atlantic Coastal Cape May-
725 AM EDT Tue Aug 4 2020

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...
...TORNADO WATCH 415 IN EFFECT UNTIL NOON EDT TODAY...
...TROPICAL STORM WARNING IN EFFECT...
...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...HIGH SURF ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
...HIGH RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING...

This Hazardous Weather Outlook is for 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.

   Flash Flood Watch.
   Tornado Watch.
   Tropical Storm Warning.
   Coastal Flood Advisory.
   High Rip Current Risk.
   High Surf Advisory.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

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

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

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

ANZ430-431-453>455-051200-
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 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-
725 AM EDT Tue Aug 4 2020

...TORNADO WATCH 415 IN EFFECT UNTIL NOON EDT TODAY...
...TROPICAL STORM WARNING IN EFFECT...

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

.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.

   Tornado Watch.
   Tropical Storm Warning.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

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

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

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

ANZ450>452-051200-
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-
725 AM EDT Tue Aug 4 2020

...TORNADO WATCH 416 IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for Atlantic coastal waters.

.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.

   Tornado Watch.
   Tropical Storm Warning.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

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

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Local storm report, Aug 4, 8:51 AM EDT, 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
851 AM EDT TUE AUG 4 2020

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

0842 AM     TROPICAL STORM   3 SSW NASSAU            38.68N 75.18W
08/04/2020                   SUSSEX             DE   PUBLIC

            ONE TREE DOWN AND SEVERAL TREE LIMBS DOWN
            BETWEEN REHOBOTH BEACH AND LONG NECK.
            TRAFFIC LIGHTS ALSO OUT IN THE AREA.

&&

STAARMANN
Local storm report, Aug 4, 8:54 AM EDT, 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
854 AM EDT TUE AUG 4 2020

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

0833 AM     FLOOD            HATFIELD                40.28N 75.30W
08/04/2020                   MONTGOMERY         PA   PUBLIC

            RESIDENTIAL STREET FLOODING IN HATFIELD.

&&

STAARMANN
Local storm report, Aug 4, 8:58 AM EDT, 30 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
858 AM EDT TUE AUG 4 2020

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

0857 AM     TROPICAL STORM   TRAPPE                  38.66N 76.06W
08/04/2020                   TALBOT             MD   TRAINED SPOTTER

            SPOTTER REPORTS NUMEROUS LIMBS DOWN AND
            DETERIORATING CONDITIONS. PEAK WINDS OF 45
            MPH SO FAR. 8.10 INCHES OF RAIN SINCE
            MIDNIGHT.

&&

STAARMANN
Local storm report, Aug 4, 8:59 AM EDT, 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
859 AM EDT TUE AUG 4 2020

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

0855 AM     HEAVY RAIN       TRAPPE                  38.66N 76.06W
08/04/2020  M8.10 INCH       TALBOT             MD   TRAINED SPOTTER

            RAIN SINCE MIDNIGHT. STILL RAINING.

&&

STAARMANN
Local storm report, Aug 4, 9:04 AM EDT, 24 minutes before
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Local storm report, Aug 4, 9:19 AM EDT, 9 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 8:07 PM EDTSpecial Weather StatementPHIHunterdon, Somerset, Warren23 min
Aug 3, 8:26 PM EDTSevere Thunderstorm WarningPHIHunterdon, Middlesex, Morris, Somerset34 min
Aug 3, 9:02 PM EDTSpecial Weather StatementPHIMorris28 min
Aug 4, 5:17 AM EDTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester, Hunterdon, Mercer, Salem and 1 more4 hr
Aug 4, 5:55 AM EDTSpecial Marine WarningPHI21 min
Aug 4, 7:28 AM EDTFlash Flood WarningPHIGloucester, Salem3 hr
Aug 4, 8:38 AM EDTSpecial Marine WarningPHI52 min
Aug 4, 9:16 AM EDTTornado WarningPHICumberland18 min
Aug 4, 9:31 AM EDTSpecial Marine WarningPHI59 min
Aug 4, 9:42 AM EDTTornado WarningPHIAtlantic, Cape May19 min
Aug 4, 10:02 AM EDTFlash Flood WarningPHIGloucester, Salem4 hr
Aug 4, 10:15 AM EDTTornado WarningPHIAtlantic, Burlington, Ocean14 min
Aug 4, 10:20 AM EDTFlash Flood WarningPHIBurlington, Camden, Gloucester4 hr
Aug 4, 11:00 AM EDTTornado Warning Tornado observedPHIMonmouth, Ocean11 min
Aug 4, 11:01 AM EDTFlash Flood WarningPHIBurlington, Hunterdon, Mercer, Middlesex, Monmouth, Ocean and 1 more4 hr
Aug 4, 11:13 AM EDTAreal Flood AdvisoryPHISussex, Warren4 hr
Aug 4, 11:43 AM EDTFlash Flood WarningPHIWarren4 hr
Aug 4, 11:59 AM EDTAreal Flood AdvisoryPHIHunterdon, Middlesex, Monmouth, Morris, Somerset4 hr
Aug 4, 2:33 PM EDTRiver Flood WarningPHIHunterdon, Somerset5 hr
Aug 4, 2:47 PM EDTAreal Flood WarningPHIHunterdon, Mercer, Middlesex, Somerset, Warren9 hr
Aug 4, 3:42 PM EDTAreal Flood WarningPHIWarren4 hr
Aug 4, 4:37 PM EDTAreal Flood WarningPHICumberland, Salem10 hr
Aug 4, 5:04 PM EDTSmall Craft AdvisoryPHI14 hr
Aug 4, 5:30 PM EDTCoastal Flood StatementPHIOcean103 min
Aug 4, 7:23 AM EDTTornado WarningPHIChester, Delaware, Montgomery, Philadelphia20 min
Aug 4, 8:11 AM EDTFlash Flood WarningPHIBucks, Lehigh, Montgomery, Northampton4 hr
Aug 4, 8:19 AM EDTRiver Flood WarningPHIDelaware15 hr
Aug 4, 8:19 AM EDTTornado WarningPHIBucks26 min
Aug 4, 9:23 AM EDTTornado Warning Tornado observedPHIChester22 min
Aug 4, 9:29 AM EDTTornado WarningPHIMonroe, Northampton31 min
Aug 4, 9:38 AM EDTFlash Flood WarningPHIMonroe, Northampton4 hr
Aug 4, 9:58 AM EDTTornado WarningPHIMonroe16 min
Aug 4, 10:51 AM EDTTornado WarningPHIMontgomery24 min
Aug 4, 12:06 PM EDTRiver Flood WarningPHIChester11 hr
Aug 4, 12:37 PM EDTRiver Flood WarningPHIMontgomery14 hr
Aug 4, 12:48 PM EDTRiver Flood WarningPHIChester, Delaware24 hr
Aug 4, 1:01 PM EDTRiver Flood WarningPHIBucks18 hr
Aug 4, 1:12 PM EDTRiver Flood WarningPHIBerks10 hr
Aug 4, 1:12 PM EDTRiver Flood WarningPHIMontgomery26 hr
Aug 4, 1:12 PM EDTRiver Flood WarningPHIChester, Montgomery, Philadelphia43 hr
Aug 4, 1:12 PM EDTRiver Flood WarningPHIMontgomery, Philadelphia35 hr
Aug 4, 1:59 PM EDTAreal Flood WarningPHIChester, Delaware9 hr
Aug 4, 2:09 PM EDTAreal Flood WarningPHIBerks, Chester, Delaware, Montgomery, Philadelphia15 hr
Aug 4, 2:23 PM EDTRiver Flood WarningPHILehigh16 hr
Aug 4, 4:39 PM EDTRiver Flood WarningPHIMonroe6 hr
Aug 4, 7:29 PM EDTAreal Flood WarningPHILehigh, Northampton12 hr
Aug 4, 4:50 AM EDTTornado WarningPHISussex25 min
Aug 4, 7:39 AM EDTTornado WarningPHISussex36 min
Aug 4, 7:51 AM EDTTornado WarningPHISussex24 min
Aug 4, 8:15 AM EDTTornado WarningPHIKent45 min
Aug 4, 8:18 AM EDTTornado WarningPHISussex27 min
Aug 4, 8:27 AM EDTTornado WarningPHIKent33 min
Aug 4, 8:56 AM EDTTornado WarningPHIKent, New Castle34 min
Aug 4, 8:58 AM EDTFlash Flood WarningPHIKent, New Castle, Sussex3 hr
Aug 4, 9:06 AM EDTRiver Flood WarningPHINew Castle11 hr
Aug 4, 9:23 AM EDTFlash Flood WarningPHINew Castle4 hr
Aug 4, 10:38 AM EDTRiver Flood WarningPHINew Castle14 hr
Aug 4, 12:27 PM EDTRiver Flood WarningPHINew Castle10 hr
Aug 4, 12:48 PM EDTRiver Flood WarningPHINew Castle24 hr

Nearby

Special Marine Warnings in New Jersey, 2020Every special marine warning 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.