Thunderstorms brought locally heavy rain to parts of southeastern Pennsylvania on the afternoon and evening of July 17. Rainfall totals were as high as 1 to 3 inches.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PHI wrote it up.
Thunderstorms brought locally heavy rain to parts of southeastern Pennsylvania on the afternoon and evening of July 17. Rainfall totals were as high as 1 to 3 inches.
The local office's own words before the first event, 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 the first event at Jul 17, 7:56 PM EST, 1 hour 14 minutes earlier.
Area Forecast Discussion
National Weather Service Mount Holly NJ
856 PM EDT Sat Jul 17 2021
.SYNOPSIS...
An area of low pressure will slowly drift eastward near the
Pennsylvania and New York tonight through Sunday, then across
southern New England through Tuesday. A surface trough will
remain near the area through Sunday, before a cold front moves
through and offshore during the day into the evening Sunday. A
surface trough is expected to develop across the east coast
Monday into Tuesday, before another cold front move across the
area around Wednesday. Another cold front is expected toward the
end of the week next week.
&&
.NEAR TERM /THROUGH SUNDAY/...
**Severe Thunderstorm Watch #382 in effect through 11 pm**
This evening...Two areas of concern this evening. One line of
thunderstorm clusters extends from north/central New Jersey,
southward into Delaware and Maryland. This cluster of storms
has been very slow moving and has produced areas of flash
flooding and thunderstorm damage. The second area of concern is
a line of showers and thunderstorms approaching from the west.
There remains 2000-3000 J/kg of CAPE ahead of this line of
showers and thunderstorms, along with some weak shear of 20-25
knots across the area. This has been sufficient enough to allow
for storms to become strong to severe and this will continue for
another couple of hours. As the line of storms approaching from
the west moves across the area, the storms are expected to
begin to weaken.
The Heat Advisory was cancelled as the temperatures and heat
index values will continue to lower now that daytime heating is
over and showers and thunderstorms will allow for temperatures
to cool.
Tonight...Showers will come to an end from W to E overnight and
patchy fog is possible. It will remain humid overnight and lows
will drop into the upper 60s to low 70s for the area.
Sunday...The upper trough will still be lingering across NY
state but drier air will have arrived at the mid/lower levels.
Overall, a fair weather day is expected with mostly sunny skies
early then mostly cloudy skies by afternoon. We will continue to
include a chance for a few showers, since some instability will
be present and enough moisture to produce a few showers is
expected. Temperatures Sunday will be closer to normal with
highs mostly in the low/mid 80s for the area. Also, dew points
will be reduced from earlier days, so more comfortable air is
expected.
&&
.SHORT TERM /SUNDAY NIGHT THROUGH MONDAY NIGHT/...
For Sunday night through Monday night, a long wave trough will
be in place across the east coast, while the cold front shifts
offshore and an area of low pressure continues to move across
southern New England. A surface trough will likely develop
across the area on the backside of the low and remain across the
area into Monday night. Several short wave/vorticity impulses
will move across the area during this period as well. There will
be a chance for isolated to scattered showers and thunderstorms
during this period.
&&
.LONG TERM /TUESDAY THROUGH SATURDAY/...
The long term period will be unsettled with at least a slight
chance of showers and thunderstorms each day, but two main
periods of higher chances Wednesday and Friday. For Tuesday, a
surface trough will remain in place across the east coast and
combine with a couple of short wave/vorticity impulses, and may
help lead to a chance of isolated to scattered showers and
thunderstorms. However, on Wednesday, a cold front is forecast
to move across the east coast, which should bring an increase
threat for showers and thunderstorms. On Thursday, another
surface trough is expected to develop across the east coast,
which could again lead to a chance of isolated to scattered
showers and thunderstorms. Yet another cold front is forecast to
move across the east coast later in the week around Friday
which will lead to a better chance of scattered showers and
thunderstorms.
Temperatures through the long term period are expected to be
near or slightly above normal.
&&
.AVIATION /01Z SUNDAY THROUGH THURSDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.
This evening...Scattered showers and thunderstorms will
continue to pop up across the TAF sites, with a line of showers
and thunderstorms moving across the area between 00z-04z. A
period of MVFR to IFR conditions is expected in the heaviest
showers and thunderstorms. Mostly south to southwest winds 10
to 15 knots. Severe tstms are possible with gusts 45-55 knots
possible until 03Z.
Overnight...Showers and thunderstorms taper off by 04z, then
MVFR ceilings are expected to move into the area from the north
as far south as PHL to ILG. IFR ceilings are possible from ABE,
RDG, and TTN late in the night into daybreak Sunday, in addition
to light fog. Light variable winds.
Sunday...MVFR conditions will begin the day, then VFR conditions
will return through the morning Scattered showers are possible
later in the day. Light and variable winds early, becoming west
to northwest 10 to 15 knots with gusts 15-20 knots.
Outlook...
Sunday night-Tuesday night...Mostly VFR. A slight chance of
isolated to scattered showers and thunderstorms which may
temporarily lead to lower conditions. West to northwest winds
5-10 knots, occasional gusts around 15 knots.
Wednesday-Wednesday night...Mostly VFR. A chance of scattered
showers and thunderstorms which may temporarily lead to lower
conditions. West to northwest winds 5-10 knots, occasional
gusts around 15 knots.
Thursday-Thursday night...Mostly VFR. A slight chance of
isolated showers and thunderstorms which may temporarily lead
to lower conditions. West to northwest winds 5-10 knots,
occasional gusts around 15 knots.
&&
.MARINE...
Showers and thunderstorms this evening with severe storms
possible. Overall South winds 15 to 20 knots with some gusts 25
knots possible. We have decided to issue a Small Craft Advisory
through 2 am as winds could continue to increase in the next few
hours. Seas building 3 to 4 ft.
Sunday, sub-SCA expected with SW winds around 10 to 15 knots.
Widely scattered showers possible.
Outlook...
Sunday night-Thursday...Conditions expected to remain below
Small Craft Advisory levels. However, winds could gust around
20 knots at times. There is a chance of isolated to scattered
showers and thunderstorms each day which could lead to locally
higher winds and waves.
Rip Currents...
South to southwest winds 10-20 mph, with occassional higher
gusts will continue across the ocean through Sunday. Seas are
expected to be 3-4 feet as well. This is expected to lead to a
moderate risk of dangerous rip currents.
On Monday, seas subside some to 2-3 feet, while winds diminish
some to 10-15 mph with occassional higher gusts. This is
expected to lead to a low risk of dangerous rip currents.
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Flash Flood Watch until 2 AM EDT Sunday for PAZ054-055-060>062-
070-071-101>106.
NJ...Flash Flood Watch until 2 AM EDT Sunday for NJZ001-007>010-
012>020-026-027.
DE...Flash Flood Watch until 2 AM EDT Sunday for DEZ001.
MD...None.
MARINE...Small Craft Advisory until 2 AM EDT Sunday for ANZ431-450>455.
&&
Synopsis...Robertson
Near Term...O'Hara/Robertson
Short Term...Robertson
Long Term...Robertson
Aviation...O'Hara/Robertson
Marine...O'Hara/RobertsonHazardous Weather Outlook National Weather Service Mount Holly NJ 0920 PM EDT Sat Jul 17 2021 DEZ001-190120- New Castle- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for New Castle County in Delaware. .DAY ONE...Through tonight. Hot conditions could result in heat exhaustion with prolonged exposure. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. DEZ002-190120- Kent- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Kent County in Delaware. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. DEZ003-190120- Inland Sussex- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for inland portions of Sussex County in Delaware. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. DEZ004-190120- Delaware Beaches- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for the Atlantic coastal portions of Sussex County in Delaware. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. PAZ054-190120- Carbon- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Carbon County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. PAZ055-190120- Monroe- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Monroe County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. PAZ060-190120- Berks- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Berks County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. PAZ061-190120- Lehigh- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Lehigh County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. PAZ062-190120- Northampton- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Northampton County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. PAZ070-190120- Delaware- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Delaware County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. PAZ071-190120- Philadelphia- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Philadelphia County in Pennsylvania. .DAY ONE...Through tonight. Hot conditions could result in heat exhaustion with prolonged exposure. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. PAZ101-190120- Western Chester- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for western Chester County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. PAZ102-190120- Eastern Chester- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for eastern Chester County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. PAZ103-190120- Western Montgomery- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for western Montgomery County in Pennsylvania. .DAY ONE...Through tonight. Hot conditions could result in heat exhaustion with prolonged exposure. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. PAZ104-190120- Eastern Montgomery- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for eastern Montgomery County in Pennsylvania. .DAY ONE...Through tonight. Hot conditions could result in heat exhaustion with prolonged exposure. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. PAZ105-190120- Upper Bucks- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for upper Bucks County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. PAZ106-190120- Lower Bucks- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for lower Bucks County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ001-190120- Sussex- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Sussex County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ007-190120- Warren- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Warren County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ008-190120- Morris- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Morris County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ009-190120- Hunterdon- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Hunterdon County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ010-190120- Somerset- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Somerset County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ012-190120- Middlesex- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Middlesex County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ013-190120- Western Monmouth- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for western Monmouth County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ014-190120- Eastern Monmouth- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for eastern Monmouth County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ015-190120- Mercer- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Mercer County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ016-190120- Salem- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Salem County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ017-190120- Gloucester- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Gloucester County in New Jersey. .DAY ONE...Through tonight. Hot conditions could result in heat exhaustion with prolonged exposure. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ018-190120- Camden- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Camden County in New Jersey. .DAY ONE...Through tonight. Hot conditions could result in heat exhaustion with prolonged exposure. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ019-190120- Northwestern Burlington- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for northwestern Burlington County in New Jersey. .DAY ONE...Through tonight. Hot conditions could result in heat exhaustion with prolonged exposure. Several instances of flooding are expected, with potential for unusually significant or widespread occurrences. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ020-190120- Ocean- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for inland portions of Ocean County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ021-190120- Cumberland- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Cumberland County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ022-190120- Atlantic- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for inland portions of Atlantic County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ023-190120- Cape May- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Cape May County excluding the Atlantic coast in New Jersey. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ024-190120- Atlantic Coastal Cape May- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for the Atlantic coastal portions of Cape May County in New Jersey. .DAY ONE...Through tonight. There is a moderate risk of rip currents. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Sunday through Friday. There is a moderate risk of rip currents on Sunday. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ025-190120- Coastal Atlantic- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for coastal portions of Atlantic County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. There is a moderate risk of rip currents. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Sunday through Friday. There is a moderate risk of rip currents on Sunday. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ026-190120- Coastal Ocean- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for coastal portions of Ocean County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. There is a moderate risk of rip currents. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. NJZ027-190120- Southeastern Burlington- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for southeastern Burlington County in New Jersey. .DAY ONE...Through tonight. Hot conditions could result in heat exhaustion with prolonged exposure. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. MDZ012-190120- Kent MD- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Kent County in Maryland. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. MDZ015-190120- Queen Annes- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Queen Annes County in Maryland. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. MDZ019-190120- Talbot- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Talbot County in Maryland. .DAY ONE...Through tonight. Hot conditions could result in heat exhaustion with prolonged exposure. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. MDZ020-190120- Caroline- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for Caroline County in Maryland. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. ANZ430-190120- Delaware Bay waters north of East Point NJ to Slaughter Beach DE- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for upper Delaware Bay. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. ANZ431-190120- Delaware Bay waters south of East Point NJ to Slaughter Beach DE- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for lower Delaware Bay. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. ANZ450-190120- Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Monmouth County out 20 nm. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. ANZ451-190120- Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Ocean County out 20 nm. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. ANZ452-190120- Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Atlantic County out 20 nm. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. ANZ453-190120- Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Cape May County out 20 nm. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. ANZ454-190120- Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to the mouth of Delaware Bay out 20 nm. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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. ANZ455-190120- Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm- 0920 PM EDT Sat Jul 17 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Sussex County out 20 nm. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .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.
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
943 PM EDT SAT JUL 17 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1245 PM HAIL 1 SSE DOYLESTOWN AIRPOR 40.33N 75.12W
07/17/2021 E0.25 INCH BUCKS PA TRAINED SPOTTER
0108 PM TSTM WND DMG 3 E GARDENVILLE 40.37N 75.05W
07/17/2021 BUCKS PA TRAINED SPOTTER
SEVERAL LARGE TREES AND NUMEROUS BRANCHES
DOWN WITH POWER OUTAGES.
0115 PM TSTM WND DMG 2 W STOCKTON 40.41N 75.01W
07/17/2021 HUNTERDON NJ DEPT OF HIGHWAYS
TREE DOWN ON NJ ROUTE 29, ALL LANES AND
RIGHT SHOULDER CLOSED.
0115 PM TSTM WND DMG SERGEANTSVILLE 40.45N 74.94W
07/17/2021 HUNTERDON NJ 911 CALL CENTER
REPORTS OF TREES DOWN AROUND DELAWARE
TOWNSHIP. TIME ESTIMATED FROM RADAR.
0135 PM TSTM WND DMG RARITAN TWP 40.50N 74.87W
07/17/2021 HUNTERDON NJ 911 CALL CENTER
REPORTS OF TREES DOWN AROUND RARITAN
TOWNSHIP.
0200 PM TSTM WND DMG LEBANON 40.64N 74.84W
07/17/2021 HUNTERDON NJ 911 CALL CENTER
REPORTS OF TREES DOWN IN LEBANON AND CLINTON
TOWNSHIPS. TIME ESTIMATED FROM RADAR.
0215 PM TSTM WND DMG TEWKSBURY TWP 40.71N 74.77W
07/17/2021 HUNTERDON NJ 911 CALL CENTER
REPORTS OF TREES DOWN IN TEWKSBURY TOWNSHIP.
TIME ESTIMATED FROM RADAR.
0215 PM HAIL 1 S GLEN GARDNER 40.69N 74.94W
07/17/2021 U0.50 INCH HUNTERDON NJ PUBLIC
REPORT FROM MPING: HALF-INCH (0.50 IN.).
0227 PM FLOOD 1 NW LAKE COMO 40.18N 74.03W
07/17/2021 MONMOUTH NJ DEPT OF HIGHWAYS
FLOODING REPORTED ON NJ 71. ONE LANE CLOSED
IN EACH DIRECTION.
0307 PM FUNNEL CLOUD WOODBRIDGE 40.56N 74.28W
07/17/2021 MIDDLESEX NJ TRAINED SPOTTER
SPOTTER REPORTED A FUNNEL CLOUD AT 3:07 PM.
FROM HIS VANTAGE POINT, IT DID NOT APPEAR TO
MAKE CONTACT WITH THE GROUND.
0310 PM TSTM WND DMG NORTH CATASAUQUA 40.66N 75.48W
07/17/2021 NORTHAMPTON PA TRAINED SPOTTER
SEVERAL TREES DOWN IN NORTH CATASAQUA AND
CATASAUQUA. TIME ESTIMATED FROM RADAR.
0310 PM TSTM WND DMG 2 N UPPER MACUNGIE TWP. 40.60N 75.62W
07/17/2021 LEHIGH PA PUBLIC
LARGE TREE SNAPPED. TIME ESTIMATED FROM
RADAR.
0310 PM TSTM WND DMG 2 NE UPPER MACUNGIE TWP 40.59N 75.59W
07/17/2021 LEHIGH PA PUBLIC
SOME SIDING BLOWN OFF A HOME. TIME ESTIMATED
FROM RADAR.
0331 PM HAIL HOPELAWN 40.53N 74.29W
07/17/2021 E0.88 INCH MIDDLESEX NJ TRAINED SPOTTER
0337 PM TSTM WND GST HOPELAWN 40.53N 74.29W
07/17/2021 M54 MPH MIDDLESEX NJ TRAINED SPOTTER
0400 PM HEAVY RAIN HOPELAWN 40.53N 74.29W
07/17/2021 M2.38 INCH MIDDLESEX NJ TRAINED SPOTTER
FELL WITHIN 1 HOUR...BETWEEN 3 PM AND 4 PM.
0500 PM HAIL FLEMINGTON 40.51N 74.86W
07/17/2021 E0.25 INCH HUNTERDON NJ PUBLIC
0510 PM TSTM WND DMG FLEMINGTON 40.51N 74.86W
07/17/2021 HUNTERDON NJ TRAINED SPOTTER
TREE AND WIRES DOWN ACROSS A ROAD IN
FLEMINGTON. TIME ESTIMATED FROM RADAR.
0530 PM TSTM WND DMG 2 ESE WHITEHOUSE STATIO 40.60N 74.73W
07/17/2021 HUNTERDON NJ 911 CALL CENTER
TREE DOWN COMPLETELY BLOCKING THE ROAD. TIME
ESTIMATED FROM RADAR.
0615 PM TSTM WND DMG LEBANON 40.64N 74.84W
07/17/2021 HUNTERDON NJ PUBLIC
TREE AND WIRES DOWN. TIME ESTIMATED FROM
RADAR.
0630 PM TSTM WND GST CHALFONT 40.29N 75.21W
07/17/2021 E50 MPH BUCKS PA TRAINED SPOTTER
ALONG WITH HEAVY RAIN.
0635 PM FLASH FLOOD 3 NE RINGOES 40.47N 74.83W
07/17/2021 HUNTERDON NJ OTHER FEDERAL
FLOODING ALONG THE NESHANIC RIVER AT
REAVILLE BASED ON THE RIVER GAUGE.
0643 PM HAIL 2 NE LAMBERTVILLE 40.39N 74.92W
07/17/2021 E1.00 INCH HUNTERDON NJ TRAINED SPOTTER
0655 PM TSTM WND DMG LAWNDALE 40.05N 75.09W
07/17/2021 PHILADELPHIA PA UTILITY COMPANY
SEVERAL POWER OUTAGES REPORTED IN NORTHEAST
PHILADELPHIA. TIME ESTIMATED FROM RADAR.
0700 PM TSTM WND DMG ABINGTON 40.12N 75.13W
07/17/2021 MONTGOMERY PA PUBLIC
SEVERAL TREES DOWN AND POWER OUTAGES. TIME
ESTIMATED FROM RADAR.
0700 PM FLASH FLOOD FLEMINGTON 40.51N 74.86W
07/17/2021 HUNTERDON NJ TRAINED SPOTTER
REPORTS OF SEVERAL ROADS FLOODED. TIME
ESTIMATED.
0705 PM TSTM WND GST RINGOES 40.44N 74.85W
07/17/2021 E50 MPH HUNTERDON NJ TRAINED SPOTTER
ALONG WITH DIME SIZE HAIL. TIME ESTIMATED
FROM RADAR.
0710 PM FLASH FLOOD 3 SW QUAKERTOWN 40.53N 74.97W
07/17/2021 HUNTERDON NJ PUBLIC
WATER RESCUE IN THE AREA OF OAK GROVE AND
LOWER OAK GROVE IN FRANKLIN TOWNSHIP.
0710 PM FLASH FLOOD 2 ESE STANTON 40.56N 74.80W
07/17/2021 HUNTERDON NJ PUBLIC
WATER RESCUE ON PLEASANT RUN ROAD.
0715 PM FLASH FLOOD 2 WSW MANVILLE 40.53N 74.62W
07/17/2021 SOMERSET NJ 911 CALL CENTER
US ROUTE 206 IS IMPASSABLE AT CAMPLAIN ROAD
IN HILLSBOROUGH TOWNSHIP DUE TO FLOODING.
0720 PM TSTM WND DMG 3 ENE LAMBERTVILLE 40.39N 74.89W
07/17/2021 HUNTERDON NJ TRAINED SPOTTER
FEW TREES SNAPPED. TIME ESTIMATED FROM
RADAR.
0730 PM TSTM WND DMG RINGOES 40.44N 74.86W
07/17/2021 HUNTERDON NJ PUBLIC
REPORT OF A TREE BLOWN DOWN INTO A HOUSE.
TIME ESTIMATED FROM RADAR.
0730 PM HEAVY RAIN 3 E FRENCHTOWN 40.53N 75.01W
07/17/2021 M3.75 INCH HUNTERDON NJ MESONET
KINGWOOD TOWNSHIP - NEW JERSEY WEATHER
NETWORK.
0800 PM HEAVY RAIN 2 SSE STANTON 40.55N 74.82W
07/17/2021 E4.55 INCH HUNTERDON NJ TRAINED SPOTTER
0808 PM TSTM WND DMG BENSALEM 40.11N 74.93W
07/17/2021 BUCKS PA TRAINED SPOTTER
SEVERAL POWER OUTAGES. LARGE BRANCHES BLOWN
DOWN AND SIDING BLOWN OFF A HOUSE. SPOTTER
ESTIMATED WINDS ABOVE 60 MPH. TIME ESTIMATED
FROM RADAR.
0815 PM TSTM WND DMG 1 NW BENSALEM 40.12N 74.94W
07/17/2021 BUCKS PA TRAINED SPOTTER
TREE DOWN.
0825 PM TSTM WND DMG MEDFORD 39.89N 74.82W
07/17/2021 BURLINGTON NJ PUBLIC
SEVERAL TREES BLOWN DOWN. TIME ESTIMATED
FROM RADAR.
0835 PM TSTM WND GST LAWRENCEVILLE 40.30N 74.73W
07/17/2021 M54 MPH MERCER NJ TRAINED SPOTTER
0855 PM TSTM WND GST 1 ESE LUMBERTON TWP 39.96N 74.79W
07/17/2021 M58 MPH BURLINGTON NJ MESONET
CWOP STATION EW8027 MEASURED GUST.
0920 PM HEAVY RAIN FLEMINGTON 40.51N 74.86W
07/17/2021 M5.41 INCH HUNTERDON NJ TRAINED SPOTTER
UPDATED TOTAL THROUGH 9 PM.
0932 PM TSTM WND DMG 2 S KENNETT SQUARE 39.81N 75.71W
07/17/2021 CHESTER PA FIRE DEPT/RESCUE
TREE DOWN BLOCKING THE ROAD ON ROUND HILL RD
AT KAOLI RD. TIME ESTIMATED FROM RADAR AND
DISPATCH REPORT.
&&PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
944 PM EDT SAT JUL 17 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0929 PM TSTM WND DMG 2 ENE LANDENBERG 39.80N 75.73W
07/17/2021 CHESTER PA FIRE DEPT/RESCUE
TREE LIMBS BLOCKING THE ROAD ON KAOLIN RD AT
LIMESTONE RD. TIME ESTIMATED FROM RADAR AND
DISPATCH REPORT.
&&
JEOPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
948 PM EDT SAT JUL 17 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0900 PM FLASH FLOOD 3 NW SAND BROOK 40.50N 74.95W
07/17/2021 HUNTERDON NJ TRAINED SPOTTER
A FEW FEET OF WATER FLOODING WHISKEY LANE.
TIME ESTIMATED FROM RADAR.
&&
SFJPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1003 PM EDT SAT JUL 17 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0830 PM FLASH FLOOD EWING 40.27N 74.80W
07/17/2021 MERCER NJ 911 CALL CENTER
WIDESPREAD ROADWAY FLOODING WITH SOME ROADS
BECOMING IMPASSABLE.
&&PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1004 PM EDT SAT JUL 17 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0915 PM FLASH FLOOD HOPEWELL 40.39N 74.75W
07/17/2021 MERCER NJ 911 CALL CENTER
WIDESPREAD ROADWAY FLOODING WITH SOME ROADS
BECOMING IMPASSABLE.
&&PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1010 PM EDT SAT JUL 17 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1245 PM HAIL 1 SSE DOYLESTOWN AIRPOR 40.33N 75.12W
07/17/2021 E0.25 INCH BUCKS PA TRAINED SPOTTER
0108 PM TSTM WND DMG 3 E GARDENVILLE 40.37N 75.05W
07/17/2021 BUCKS PA TRAINED SPOTTER
SEVERAL LARGE TREES AND NUMEROUS BRANCHES
DOWN WITH POWER OUTAGES.
0115 PM TSTM WND DMG SERGEANTSVILLE 40.45N 74.94W
07/17/2021 HUNTERDON NJ 911 CALL CENTER
REPORTS OF TREES DOWN AROUND DELAWARE
TOWNSHIP. TIME ESTIMATED FROM RADAR.
0115 PM TSTM WND DMG 2 W STOCKTON 40.41N 75.01W
07/17/2021 HUNTERDON NJ DEPT OF HIGHWAYS
TREE DOWN ON NJ ROUTE 29, ALL LANES AND
RIGHT SHOULDER CLOSED.
0135 PM TSTM WND DMG RARITAN TWP 40.50N 74.87W
07/17/2021 HUNTERDON NJ 911 CALL CENTER
REPORTS OF TREES DOWN AROUND RARITAN
TOWNSHIP.
0200 PM TSTM WND DMG LEBANON 40.64N 74.84W
07/17/2021 HUNTERDON NJ 911 CALL CENTER
REPORTS OF TREES DOWN IN LEBANON AND CLINTON
TOWNSHIPS. TIME ESTIMATED FROM RADAR.
0215 PM TSTM WND DMG TEWKSBURY TWP 40.71N 74.77W
07/17/2021 HUNTERDON NJ 911 CALL CENTER
REPORTS OF TREES DOWN IN TEWKSBURY TOWNSHIP.
TIME ESTIMATED FROM RADAR.
0215 PM HAIL 1 S GLEN GARDNER 40.69N 74.94W
07/17/2021 U0.50 INCH HUNTERDON NJ PUBLIC
REPORT FROM MPING: HALF-INCH (0.50 IN.).
0227 PM FLOOD 1 NW LAKE COMO 40.18N 74.03W
07/17/2021 MONMOUTH NJ DEPT OF HIGHWAYS
FLOODING REPORTED ON NJ 71. ONE LANE CLOSED
IN EACH DIRECTION.
0307 PM FUNNEL CLOUD WOODBRIDGE 40.56N 74.28W
07/17/2021 MIDDLESEX NJ TRAINED SPOTTER
SPOTTER REPORTED A FUNNEL CLOUD AT 3:07 PM.
FROM HIS VANTAGE POINT, IT DID NOT APPEAR TO
MAKE CONTACT WITH THE GROUND.
0310 PM TSTM WND DMG 2 NE UPPER MACUNGIE TWP 40.59N 75.59W
07/17/2021 LEHIGH PA PUBLIC
SOME SIDING BLOWN OFF A HOME. TIME ESTIMATED
FROM RADAR.
0310 PM TSTM WND DMG 2 N UPPER MACUNGIE TWP. 40.60N 75.62W
07/17/2021 LEHIGH PA PUBLIC
LARGE TREE SNAPPED. TIME ESTIMATED FROM
RADAR.
0310 PM TSTM WND DMG NORTH CATASAUQUA 40.66N 75.48W
07/17/2021 NORTHAMPTON PA TRAINED SPOTTER
SEVERAL TREES DOWN IN NORTH CATASAQUA AND
CATASAUQUA. TIME ESTIMATED FROM RADAR.
0331 PM HAIL HOPELAWN 40.53N 74.29W
07/17/2021 E0.88 INCH MIDDLESEX NJ TRAINED SPOTTER
0337 PM TSTM WND GST HOPELAWN 40.53N 74.29W
07/17/2021 M54 MPH MIDDLESEX NJ TRAINED SPOTTER
0400 PM HEAVY RAIN HOPELAWN 40.53N 74.29W
07/17/2021 M2.38 INCH MIDDLESEX NJ TRAINED SPOTTER
FELL WITHIN 1 HOUR...BETWEEN 3 PM AND 4 PM.
0500 PM HAIL FLEMINGTON 40.51N 74.86W
07/17/2021 E0.25 INCH HUNTERDON NJ PUBLIC
0510 PM TSTM WND DMG FLEMINGTON 40.51N 74.86W
07/17/2021 HUNTERDON NJ TRAINED SPOTTER
TREE AND WIRES DOWN ACROSS A ROAD IN
FLEMINGTON. TIME ESTIMATED FROM RADAR.
0530 PM TSTM WND DMG 2 ESE WHITEHOUSE STATIO 40.60N 74.73W
07/17/2021 HUNTERDON NJ 911 CALL CENTER
TREE DOWN COMPLETELY BLOCKING THE ROAD. TIME
ESTIMATED FROM RADAR.
0615 PM TSTM WND DMG LEBANON 40.64N 74.84W
07/17/2021 HUNTERDON NJ PUBLIC
TREE AND WIRES DOWN. TIME ESTIMATED FROM
RADAR.
0630 PM TSTM WND GST CHALFONT 40.29N 75.21W
07/17/2021 E50 MPH BUCKS PA TRAINED SPOTTER
ALONG WITH HEAVY RAIN.
0635 PM FLASH FLOOD 3 NE RINGOES 40.47N 74.83W
07/17/2021 HUNTERDON NJ OTHER FEDERAL
FLOODING ALONG THE NESHANIC RIVER AT
REAVILLE BASED ON THE RIVER GAUGE.
0643 PM HAIL 2 NE LAMBERTVILLE 40.39N 74.92W
07/17/2021 E1.00 INCH HUNTERDON NJ TRAINED SPOTTER
0655 PM TSTM WND DMG LAWNDALE 40.05N 75.09W
07/17/2021 PHILADELPHIA PA UTILITY COMPANY
SEVERAL POWER OUTAGES REPORTED IN NORTHEAST
PHILADELPHIA. TIME ESTIMATED FROM RADAR.
0700 PM FLASH FLOOD FLEMINGTON 40.51N 74.86W
07/17/2021 HUNTERDON NJ TRAINED SPOTTER
REPORTS OF SEVERAL ROADS FLOODED. TIME
ESTIMATED.
0700 PM TSTM WND DMG ABINGTON 40.12N 75.13W
07/17/2021 MONTGOMERY PA PUBLIC
SEVERAL TREES DOWN AND POWER OUTAGES. TIME
ESTIMATED FROM RADAR.
0705 PM TSTM WND GST RINGOES 40.44N 74.85W
07/17/2021 E50 MPH HUNTERDON NJ TRAINED SPOTTER
ALONG WITH DIME SIZE HAIL. TIME ESTIMATED
FROM RADAR.
0710 PM FLASH FLOOD 2 ESE STANTON 40.56N 74.80W
07/17/2021 HUNTERDON NJ PUBLIC
WATER RESCUE ON PLEASANT RUN ROAD.
0710 PM FLASH FLOOD 3 SW QUAKERTOWN 40.53N 74.97W
07/17/2021 HUNTERDON NJ PUBLIC
WATER RESCUE IN THE AREA OF OAK GROVE AND
LOWER OAK GROVE IN FRANKLIN TOWNSHIP.
0715 PM FLASH FLOOD 2 WSW MANVILLE 40.53N 74.62W
07/17/2021 SOMERSET NJ 911 CALL CENTER
US ROUTE 206 IS IMPASSABLE AT CAMPLAIN ROAD
IN HILLSBOROUGH TOWNSHIP DUE TO FLOODING.
0720 PM TSTM WND DMG 3 ENE LAMBERTVILLE 40.39N 74.89W
07/17/2021 HUNTERDON NJ TRAINED SPOTTER
FEW TREES SNAPPED. TIME ESTIMATED FROM
RADAR.
0730 PM HEAVY RAIN 3 E FRENCHTOWN 40.53N 75.01W
07/17/2021 M3.75 INCH HUNTERDON NJ MESONET
KINGWOOD TOWNSHIP - NEW JERSEY WEATHER
NETWORK.
0730 PM TSTM WND DMG RINGOES 40.44N 74.86W
07/17/2021 HUNTERDON NJ PUBLIC
REPORT OF A TREE BLOWN DOWN INTO A HOUSE.
TIME ESTIMATED FROM RADAR.
0735 PM TSTM WND DMG 1 WSW CLINTON 40.63N 74.92W
07/17/2021 HUNTERDON NJ DEPT OF HIGHWAYS
TREE DOWN ON INTERSTATE 78. TIME ESTIMATED
FROM RADAR.
0800 PM HEAVY RAIN 2 SSE STANTON 40.55N 74.82W
07/17/2021 E4.55 INCH HUNTERDON NJ TRAINED SPOTTER
0808 PM TSTM WND DMG BENSALEM 40.11N 74.93W
07/17/2021 BUCKS PA TRAINED SPOTTER
SEVERAL POWER OUTAGES. LARGE BRANCHES BLOWN
DOWN AND SIDING BLOWN OFF A HOUSE. SPOTTER
ESTIMATED WINDS ABOVE 60 MPH. TIME ESTIMATED
FROM RADAR.
0815 PM TSTM WND DMG 1 NW BENSALEM 40.12N 74.94W
07/17/2021 BUCKS PA TRAINED SPOTTER
TREE DOWN.
0825 PM TSTM WND DMG MEDFORD 39.89N 74.82W
07/17/2021 BURLINGTON NJ PUBLIC
SEVERAL TREES BLOWN DOWN. TIME ESTIMATED
FROM RADAR.
0830 PM FLASH FLOOD EWING 40.27N 74.80W
07/17/2021 MERCER NJ 911 CALL CENTER
WIDESPREAD ROADWAY FLOODING WITH SOME ROADS
BECOMING IMPASSABLE.
0835 PM TSTM WND GST LAWRENCEVILLE 40.30N 74.73W
07/17/2021 M54 MPH MERCER NJ TRAINED SPOTTER
0850 PM FLASH FLOOD 1 ESE RARITAN TWP 40.50N 74.86W
07/17/2021 HUNTERDON NJ DEPT OF HIGHWAYS
FLOODING ON 202 SOUTHBOUND. ALL LANES
CLOSED. TIME ESTIMATED.
0855 PM TSTM WND GST 1 ESE LUMBERTON TWP 39.96N 74.79W
07/17/2021 M58 MPH BURLINGTON NJ MESONET
CWOP STATION EW8027 MEASURED GUST.
0900 PM FLASH FLOOD 3 NW SAND BROOK 40.50N 74.95W
07/17/2021 HUNTERDON NJ TRAINED SPOTTER
A FEW FEET OF WATER FLOODING WHISKEY LANE.
TIME ESTIMATED FROM RADAR.
0915 PM FLASH FLOOD HOPEWELL 40.39N 74.75W
07/17/2021 MERCER NJ 911 CALL CENTER
WIDESPREAD ROADWAY FLOODING WITH SOME ROADS
BECOMING IMPASSABLE.
0920 PM HEAVY RAIN FLEMINGTON 40.51N 74.86W
07/17/2021 M5.41 INCH HUNTERDON NJ TRAINED SPOTTER
UPDATED TOTAL THROUGH 9 PM.
0929 PM TSTM WND DMG 2 ENE LANDENBERG 39.80N 75.73W
07/17/2021 CHESTER PA FIRE DEPT/RESCUE
TREE LIMBS BLOCKING THE ROAD ON KAOLIN RD AT
LIMESTONE RD. TIME ESTIMATED FROM RADAR AND
DISPATCH REPORT.
0930 PM MARINE TSTM WIND 9 WNW CAPE MAY POINT 38.99N 75.11W
07/17/2021 M78 MPH ANZ431 NJ OTHER FEDERAL
BRND1.
0932 PM TSTM WND DMG 2 S KENNETT SQUARE 39.81N 75.71W
07/17/2021 CHESTER PA FIRE DEPT/RESCUE
TREE DOWN BLOCKING THE ROAD ON ROUND HILL RD
AT KAOLI RD. TIME ESTIMATED FROM RADAR AND
DISPATCH REPORT.
1003 PM HAIL 1 S VILLAS 39.02N 74.94W
07/17/2021 U0.50 INCH CAPE MAY NJ PUBLIC
REPORT FROM MPING: HALF-INCH (0.50 IN.).
&&The Philadelphia radar (KDIX), 50 km away, was scanning. The volume nearest the first event began at 02:08 UTC.
4 flash flood. Local standard time, as filed.
Widespread roadway flooding around the Philadelphia Mills Mall with roads closed and a few vehicles stranded.
A water rescue took place in Bensalem Township.
Minor flooding occurred along the Pennypack Creek in Northeast Philadelphia.
Minor flooding occurred along the Frankford Creek in Philadelphia.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2021Every state in 2021This day in weather historyWarnings in Pennsylvania, July 2021
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 962193, 962197, 962195, 962196.