Pennsylvania, 2021

Tornadoes and Damaging Winds in Pennsylvania, July 29, 2021

July 29, 2021 · NWS PHI · 15 events in 5 counties and zones

A strong shortwave trough moved east-southeastward out of the Great Lakes region on July 29. An associated, strengthening surface low also tracked out of the Great Lakes and into upstate New York.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
15

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.

What happened

The episode as NWS PHI wrote it up.

A strong shortwave trough moved east-southeastward out of the Great Lakes region on July 29. An associated, strengthening surface low also tracked out of the Great Lakes and into upstate New York. A warm front associated with this low moved through most of New Jersey and eastern Pennsylvania during the late morning and early afternoon hours. This front, combined with the remains of widespread convection to the west from the previous overnight and morning hours, brought significant cloud cover to the eastern mid-Atlantic for much of the day on the 29th. This was mainly in the form of mid and high level cloud cover, however, and temperatures still warmed to near seasonal levels behind the warm front, allowing moderate to strong instability to build. Meanwhile, the robust surface and upper level disturbances approaching the region brought both strong forcing and unseasonably strong wind shear. By mid-afternoon, an unusually favorable convective environment existed over eastern Pennsylvania and New Jersey.

The result of this environment was a rare tornado outbreak across the area. Initially, during the mid-afternoon hours, mixed convective modes over east-central Pennsylvania produced a couple instances of damaging wind and brief tornadoes as storms attempted to overcome cloud cover and some light stratiform rain in the area. With time, as storms moved into better instability and a less contaminated environment over far eastern Pennsylvania and New Jersey, they took on more supercellular structures. Multiple cyclic supercells would go on to produce several tornadoes, three of them strong (EF2+) over eastern Pennsylvania and New Jersey. Convection persisted past the sunset hour with little to no loss in intensity due to the strong forcing. The only thing that put an end to the outbreak was the coastline, as storms moved offshore towards 9 to 10PM local time. Even offshore, one supercell continued to exhibit strong rotation and likely produced a strong waterspout for tens of miles over the Atlantic.

Fortunately, and miraculously, no serious injuries or loss of life occurred as a result of this outbreak. With the passage of a cold front late on the evening of the 29th, cooler, drier, and much less active weather would grace the region for several days as clean-up efforts began.

What forecasters said that day

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 29, 1:49 PM EST, 1 hour 15 minutes earlier.

Area forecast discussion, Jul 29, 1:49 PM EST, 1 hour 15 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
249 PM EDT Thu Jul 29 2021

.SYNOPSIS...
A warm front is forecast to lift into our region today as high
pressure slides out to sea. A cold front will approach from the
Great Lakes today and tonight and it should pass through eastern
Pennsylvania, eastern Maryland, Delaware and New Jersey early
on Friday. High pressure is anticipated to follow for Friday and
Saturday. Another cold front from the northwest is expected to
move toward and through our region on Sunday and Sunday night.
High pressure should briefly influence our weather on Monday
before low pressure passes off the Middle Atlantic coast on
Tuesday or Wednesday.

&&

.NEAR TERM /THROUGH TONIGHT/...
...THERE IS AN ENHANCED RISK FOR SEVERE WEATHER ACROSS THE
REGION TODAY...

A Tornado Watch is in effect for the entire forecast area
through 9 PM tonight.

Most of the region remains in a slight or enhanced risk for
severe weather, as issued by the SPC. The threats are damaging
winds, large hail, and an isolated tornado. The primary threat
time will be this afternoon into evening.

While there are clouds clearly seen on visible satellite across
the area, there are many breaks occurring with peeks of sun
coming through. This is enhancing our instability and as a
result confidence has grown that we will see convection develop
and move through our area this afternoon and evening.

Some early showers and thunderstorms have started to pop up
across Delmarva and New Jersey with the main line of storms off
to the west in central PA. There is still support for effective
bulk shear values of ~45 kts, which will be more than
sufficient to support rotating updrafts. Some upscale growth is
forecast as multiple cold pools start to be deposited and merge.
While areas to the north may see less of the action this
afternoon, there is still the possibility for some strong to
severe storms in those areas. To the south and east, we have
seen much more clearing and temps have risen appreciably in
response. Dew points have climbed into the upper 60s to lower
70s, and heavy down pours remain another threat today though
the storms should have sufficient motion so flash flooding is
not as high on the threat list at this time. However, there is
potential that along the frontal boundary we could see some back
building so we will need to monitor those areas for flooding
concerns.

As the storms clear the coast, surface low pressure will be
located near the NY/Canada border and be dragging a surface cold
front through the area. Winds will slowly turn from the
northwest through the night with skies slowly clearing from the
west.

&&

.SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/...
A long wave trough will continue to affect the northeastern
states from Friday through Saturday night. A couple of short
waves are forecast to pass over New York and New England on
Friday and Friday night. Any showers associated with short waves
will likely remain to our northeast. Surface high pressure is
anticipated to slide from the Great Lakes on Friday to the
waters off the Middle Atlantic coast on Saturday night, bringing
our region dry weather conditions.

The surface high is expected to be accompanied by unseasonably
low humidity levels in eastern Pennsylvania, New Jersey,
Delaware and eastern Maryland. Dew point readings are forecast
to drop into the 50s by late Friday afternoon and they should
favor the upper 40s and lower 50s on Friday night and Saturday.
They may begin to creep upward into the middle and upper 50s on
Saturday night in the return flow as the high moves off the
coast.

High temperatures should be mainly in the 80s on Friday and
around 80 degrees on Saturday. Readings will likely not get
above the lower and middle 70s in the elevated terrain of the
Poconos and far northern New Jersey on either day. Lows are
anticipated to favor the 50s on Friday night, and the upper 50s
and lower 60s on Saturday night.

&&

.LONG TERM /SUNDAY THROUGH WEDNESDAY/...
The long wave trough is expected to remain over the eastern
states from Sunday through Wednesday. A closed low may develop
over Ohio and vicinity on Wednesday. The pattern will prevent
the heat and humidity from building back into our region.
Daytime highs should favor the range from the upper 70s to the
middle 80s with overnight lows mostly from the upper 50s to the
middle 60s.

A mid level short wave and its associated surface cold front
are anticipated to approach from the northwest on Sunday before
making their way across our region on Sunday night. We are
mentioning a chance of showers and thunderstorms mainly from
Sunday afternoon into Sunday evening. The cold front is expected
to nearly stall to our south on Monday as high pressure builds
from the Great Lakes into the northeastern states.

Low pressure developing and traveling along the cold front to
our south should impact our weather in the Tuesday and Wednesday
time frame. The guidance differs on the details, timing and
number of waves of low pressure, so we will simply keep a chance
of precipitation for both days.

&&

.AVIATION /19Z THURSDAY THROUGH TUESDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

Today...MVFR cigs continue to plague the terminals this
afternoon. Winds are generally out of the south to southeast
around 5 to 10 knots and will start to veer to the southwest
through the afternoon. Expect showers and thunderstorms through
the afternoon and early evening with MVFR/IFR conditions at
times between 21-02Z. Winds may gust in excess of 30 knots in
and near thunderstorms. Moderate confidence overall with low
confidence in thunderstorm timing.

Tonight...Becoming VFR after evening showers/thunderstorms and
associated restrictions. MVFR conditions may persist through
about 05Z before clearing. Winds gradually shifting from the
northwest with prevailing speeds 5 to 10 kt. High confidence.

Outlook...

Friday...Mainly VFR. Northwest wind 10 to 15 knots with gusts
of 20 to 25 knots. High confidence.

Saturday...Mainly VFR. Northwest wind 5 to 10 knots, becoming
southwest. High confidence.

Sunday...Some early morning low clouds and visibility
restrictions are possible, otherwise mainly VFR. A chance of
showers and thunderstorms in the afternoon and evening. South to
southwest wind around 10 knots. Medium confidence.

Monday...Mainly VFR. Northwest wind around 10 knots. Medium
confidence.

&&

.MARINE...
This morning... Sub-SCA conditions expected with southeast
winds around 10 kts. Seas 2 to 3 ft.

This afternoon into tonight... Winds will continue strengthen
as the pressure gradient tightens with gusts very close to or at
SCA criteria. Seas building 3 to 4 ft. Given the above, have
issued an SCA for the Atlantic Coastal waters starting at 2 PM
this afternoon and continuing until midnight tonight.
Thunderstorms will cross the waters late this afternoon into
evening. Winds and seas will be higher in and near
thunderstorms.

Outlook...

Friday through Monday...No marine headlines are anticipated.

Rip currents...

Winds will increase to 15 to 20 kts today with gusts at SCA
criteria. There will be an onshore component for the NJ coast
today as winds veer from the south. Given the above, and the 8
second period forecast, the rip risk for Coastal Cape May and
Coastal Atlantic will be MODERATE today. The rest of the beaches
will be kept at LOW given the orientation of the coastline
relative to the wind direction. Winds shift offshore for Friday,
so the rip risk for Friday will be LOW.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...Small Craft Advisory until midnight EDT tonight for ANZ450>455.

&&

Synopsis...Iovino
Near Term...Haines/Meola
Short Term...Iovino
Long Term...Iovino
Aviation...Haines/Iovino/Meola
Marine...Haines/Iovino
Hazardous weather outlook, Jul 29, 1:31 PM EST, 1 hour 33 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
0231 PM EDT Thu Jul 29 2021

DEZ001-301831-
New Castle-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for New Castle County in Delaware.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

DEZ002-301831-
Kent-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Kent County in Delaware.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

DEZ003-301831-
Inland Sussex-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for inland portions of Sussex County
in Delaware.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

DEZ004-301831-
Delaware Beaches-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for the Atlantic coastal portions of
Sussex County in Delaware.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

PAZ054-301831-
Carbon-
0231 PM EDT Thu Jul 29 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.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

PAZ055-301831-
Monroe-
0231 PM EDT Thu Jul 29 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.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

PAZ060-301831-
Berks-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Berks County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

PAZ061-301831-
Lehigh-
0231 PM EDT Thu Jul 29 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.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

PAZ062-301831-
Northampton-
0231 PM EDT Thu Jul 29 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.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

PAZ070-301831-
Delaware-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Delaware County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

PAZ071-301831-
Philadelphia-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Philadelphia County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

PAZ101-301831-
Western Chester-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for western Chester County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

PAZ102-301831-
Eastern Chester-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for eastern Chester County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

PAZ103-301831-
Western Montgomery-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for western Montgomery County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

PAZ104-301831-
Eastern Montgomery-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for eastern Montgomery County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

PAZ105-301831-
Upper Bucks-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for upper Bucks County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

PAZ106-301831-
Lower Bucks-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for lower Bucks County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ001-301831-
Sussex-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Sussex 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.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ007-301831-
Warren-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Warren 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.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ008-301831-
Morris-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Morris 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.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ009-301831-
Hunterdon-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Hunterdon 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.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ010-301831-
Somerset-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Somerset 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.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ012-301831-
Middlesex-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Middlesex 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.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ013-301831-
Western Monmouth-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for western 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.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ014-301831-
Eastern Monmouth-
0231 PM EDT Thu Jul 29 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.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ015-301831-
Mercer-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Mercer County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ016-301831-
Salem-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Salem County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ017-301831-
Gloucester-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Gloucester County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ018-301831-
Camden-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Camden County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ019-301831-
Northwestern Burlington-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for northwestern Burlington County in
New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ020-301831-
Ocean-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for inland portions of Ocean County
in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ021-301831-
Cumberland-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Cumberland County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ022-301831-
Atlantic-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for inland portions of Atlantic
County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ023-301831-
Cape May-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Cape May County excluding the
Atlantic coast in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ024-301831-
Atlantic Coastal Cape May-
0231 PM EDT Thu Jul 29 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.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ025-301831-
Coastal Atlantic-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for coastal portions of Atlantic
County in New Jersey.

.DAY ONE...Through tonight.

There is a moderate risk of rip currents.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ026-301831-
Coastal Ocean-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for coastal portions of Ocean County
in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

NJZ027-301831-
Southeastern Burlington-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for southeastern Burlington County in
New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

MDZ012-301831-
Kent MD-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Kent County in Maryland.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

MDZ015-301831-
Queen Annes-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Queen Annes County in Maryland.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

MDZ019-301831-
Talbot-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Talbot County in Maryland.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

MDZ020-301831-
Caroline-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for Caroline County in Maryland.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

ANZ430-301831-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for upper Delaware Bay.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

ANZ431-301831-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for lower Delaware Bay.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

ANZ450-301831-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Monmouth County out 20 nm.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

ANZ451-301831-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Ocean County out 20 nm.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

ANZ452-301831-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Atlantic County out 20 nm.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

ANZ453-301831-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Cape May County out 20 nm.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

ANZ454-301831-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
0231 PM EDT Thu Jul 29 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.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

ANZ455-301831-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
0231 PM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Sussex County out 20 nm.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Special weather statement, Jul 29, 10:35 AM EST, 4 hours 29 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
1135 AM EDT Thu Jul 29 2021

MDZ019-020-291630-
Talbot-Caroline-
1135 AM EDT Thu Jul 29 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN TALBOT AND
SOUTHWESTERN CAROLINE COUNTIES...

At 1135 AM EDT, a strong thunderstorm was located over Hambleton, or
near Easton, moving east at 10 mph.

Wind gusts up to 40 mph are possible with this storm.

Locations impacted include...
Easton, Trappe, Preston, Agner, Choptank, Tanyard, Harmony, Hambleton
and Windyhill.

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

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

LAT...LON 3858 7606 3860 7606 3863 7608 3862 7612
      3873 7612 3881 7578 3868 7578 3871 7584
      3870 7587 3870 7590 3866 7596 3860 7599
      3857 7603
TIME...MOT...LOC 1535Z 266DEG 8KT 3868 7605

PO
Special weather statement, Jul 29, 12:37 PM EST, 2 hours 27 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
137 PM EDT Thu Jul 29 2021

DEZ003-291815-
Inland Sussex-
137 PM EDT Thu Jul 29 2021

...A STRONG THUNDERSTORM WILL AFFECT WEST CENTRAL SUSSEX COUNTY...

At 137 PM EDT, a strong thunderstorm was located near Seaford, or 11
miles east of Hurlock, moving east at 20 mph.

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

Locations impacted include...
Seaford, Bridgeville and Blades.

If outdoors, consider seeking shelter inside a building.

LAT...LON 3862 7570 3863 7571 3870 7571 3884 7553
      3862 7542
TIME...MOT...LOC 1737Z 250DEG 17KT 3868 7566

Staarmann
Special weather statement, Jul 29, 1:38 PM EST, 1 hour 26 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
238 PM EDT Thu Jul 29 2021

DEZ003-291915-
Inland Sussex-
238 PM EDT Thu Jul 29 2021

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL SUSSEX COUNTY...

At 237 PM EDT, a strong thunderstorm was located near Georgetown,
moving east at 15 mph.

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

Locations impacted include...
Georgetown, Lewes, Milton and Long Neck.

If outdoors, consider seeking shelter inside a building.

LAT...LON 3865 7538 3875 7540 3885 7518 3864 7512
      3863 7513 3862 7511 3861 7513
TIME...MOT...LOC 1837Z 263DEG 11KT 3871 7532

Staarmann
Local storm report, Jul 29, 2:44 PM EST, 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
344 PM EDT THU JUL 29 2021

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

0319 PM     MARINE TSTM WIND INDIAN BEACH            38.68N 75.08W
07/29/2021  M45 MPH          ANZ455             DE   MESONET

            DEWEY BEACH WEATHERFLOW SITE.

&&

MPS
Local storm report, Jul 29, 2:52 PM EST, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
352 PM EDT THU JUL 29 2021

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

0346 PM     WATER SPOUT      5 N BETHANY BEACH       38.61N 75.06W
07/29/2021                   ANZ455             DE   TRAINED SPOTTER

            PICTURES AND A VIDEO OF A WATERSPOUT IN
            PROGRESS JUST OFFSHORE OF THE INDIAN RIVER
            INLET.

&&

STAARMANN
Local storm report, Jul 29, 2:55 PM EST, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
355 PM EDT THU JUL 29 2021

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

0334 PM     MARINE TSTM WIND 5 E LONG NECK           38.61N 75.06W
07/29/2021  M43 MPH          SUSSEX             DE   DEPT OF HIGHWAYS

            DEDOT GAUGE MEASURED GUST.

&&

STAARMANN

The radar

The Philadelphia radar (KDIX), 140 km away, was scanning. The volume nearest the first event began at 20:07 UTC.

Open the radar archive at this moment

Event by event

8 tornado, 6 thunderstorm wind, 1 funnel cloud. Local standard time, as filed.

Tornado, Berks

When
July 29, 3:04 PM EST to 3:05 PM EST
Where
Berks County, 0.92 mi SE of Stony Run to 1.28 mi ESE of Stony Run
Rating
EF1
Path length
0.62 mi
Path width
90 yd
Continued into
Lehigh, Pa (PHI)
Reported by
NWS Storm Survey
Coordinates
40.611, -75.807

A tornado touched down near Turkey Rd in Kempton, Albany Twp, Berks |County, PA, just west of the border with Lehigh County. About 15 |trees were uprooted in the area of Turkey Rd with a convergent |damage pattern noted in multiple nearby corn fields. The tornado then continued eastward into Lehigh County after only about one minute in Berks County.

Thunderstorm Wind, Lehigh

When
July 29, 3:05 PM EST
Where
Lehigh County, 0.87 mi SE of Stines Corner
Measured
50 kt (58 mph) estimated gust
Reported by
Department of Highways
Coordinates
40.620, -75.740

Utility poles were reported down in the area.

Tornado, Lehigh

When
July 29, 3:05 PM EST to 3:09 PM EST
Where
Lehigh County, 2.65 mi WSW of Stines Corner to 0.59 mi SSW of Stines Corner
Rating
EF1
Path length
2.28 mi
Path width
90 yd
Reported by
NWS Storm Survey
Coordinates
40.615, -75.796

The tornado which began in western Albany Twp, Berks County, continued into Lehigh County. It tracked between between Kunkels Mill Rd and Red Rd near the far |southern tip of Lynn Twp. Mostly minor crop and |tree damage was observed in this area, but with a continued clear |convergent pattern. A resident on Red Rd filmed the tornado as it |passed to his south. The tornado passed through an open field before |crossing Rhoads Rd, where tree and minor roofing damage were |sustained. East of Rhoads Rd, a number of trees were snapped and |uprooted as the tornado approached New Smithville Rd. The tornado |crossed Golden Key Rd, uprooting a few more trees, before |dissipating in a field prior to reaching Loch Valley Rd in |Weisenberg Twp. The extent of tree damage both near the start of the |path in Berks County and in the New Smithville Rd area merited an EF1 |rating.

Thunderstorm Wind, Lehigh

When
July 29, 3:08 PM EST
Where
Lehigh County, 0.52 mi W of Lynnport
Measured
50 kt (58 mph) estimated gust
Reported by
Public
Coordinates
40.680, -75.810

Trees and wires were downed. Time estimated by radar.

Thunderstorm Wind, Lehigh

When
July 29, 3:14 PM EST
Where
Lehigh County, Hynemansville
Measured
50 kt (58 mph) estimated gust
Reported by
Public
Coordinates
40.600, -75.720

Trees and wires were downed on Route 863, and the road was closed. Time estimated from radar.

Tornado, Lehigh

When
July 29, 3:25 PM EST to 3:29 PM EST
Where
Lehigh County, 0.64 mi NNE of Emerald to 1.06 mi NNW of Slatington
Rating
EF1
Path length
1.15 mi
Path width
75 yd
Reported by
NWS Storm Survey
Coordinates
40.758, -75.624

This tornado initially caused considerable tree damage on |Welshtown Road and Skeet Club Lane including mutliple uprooted |hardwood trees. It continued on the grounds of Northern Lehigh |High School in Slatington. Several trees were snapped or uprooted |at the atletic fields of the high school, with most of the |snapping occurring high up in the trees. A wooden dugout on the |school's baseball field lost its roof, and some unanchored metal |bleachers were tossed. Damage was mostly blown in a similar west |to east direction, but there was some evidence of convergence |especially in tree damage in the area. In a neighborhood east of |the high school, a tree was snapped about one third of the way up |the trunk. At the Slatington Airport, an airplane hangar door was |blown out and there was tree damage on the airport property. |Damage became more unidirectional near the airport as the |circulation likely gusted out. Little if any damage occurred east |of the airport property, and that is where the tornado path is |estimated to have ended.

Funnel Cloud, Northampton

When
July 29, 3:58 PM EST
Where
Northampton County, 0.87 mi SE of Farmington
Reported by
Public
Coordinates
40.570, -75.370

A photo was submitted via social media of a funnel cloud just north of Center Valley.

Thunderstorm Wind, Bucks

When
July 29, 4:11 PM EST
Where
Bucks County, 0.87 mi SW of Quakertown
Measured
55 kt (63 mph) estimated gust
Reported by
Public
Coordinates
40.440, -75.340

Several trees were downed in Quakertown. This storm would go on to produce multiple tornadoes. Time estimated from radar.

Thunderstorm Wind, Bucks

When
July 29, 4:30 PM EST
Where
Bucks County, 0.59 mi WNW of Ottsville
Measured
55 kt (63 mph) estimated gust
Reported by
Department of Highways
Coordinates
40.475, -75.159

Trees or limbs blocked Fretz Valley Rd, Geigel Hill Rd, and Creamery Rd. Time estimated from radar.

Tornado, Bucks

When
July 29, 4:40 PM EST to 4:45 PM EST
Where
Bucks County, 0.58 mi SSW of Wismer to 0.9 mi S of Carversville
Rating
EF1
Path length
2.69 mi
Path width
70 yd
Reported by
NWS Storm Survey
Coordinates
40.393, -75.106

Tree damage began in the area of Bradshaw Rd in Plumstead Twp in |Bucks County, where a few sizable limbs were downed and a couple |of larger but weakened trees were snapped. The tornado then |entered a cornfield near the intersection of Ferry Rd and Point |Pleasant Pike. Some degree of convergence was noted in a narrow |path of downed corn, though it was not overly strong. In addition,|some trees adjacent to and southeast of the cornfield were also |damaged. The damage became more substantial with a clearer |rotation signature observed in the area of Ridgeview Dr, where a |number of trees were snapped, favoring higher elevation areas |along a ridge line. The snapping and shearing of trees in that |area and the nature of the debris field strongly indicated |tornadic damage, with the magnitude of damage meriting an EF1 |rating. The tornado continued southeastward through Carversville |Rd and to the area of Long Ln in Buckingham Twp. Several |residences along and near Long Ln sustained tree damage. The |tornado impacted Maximuck's Farm Market on Long Ln, where |greenhouses sustained roof damage and some uplift of their frames.|Some convergence was also noted in crop fields on the property. |Just southeast of the greenhouses, a barn on the property was |heavily damaged with a partial collapse of its walls. However, |just beyond the barn, a large stretch of cornfields and a tree |line beyond the cornfields were left untouched, indicating the |tornado lifted near the damaged barn.

Thunderstorm Wind, Bucks

When
July 29, 4:50 PM EST
Where
Bucks County, 0.53 mi E of Mechanicsville
Measured
60 kt (69 mph) estimated gust
Reported by
Broadcast Media
Coordinates
40.350, -75.040

Widespread tree damage and minor damage to some structures was reported in Buckingham Twp.

Tornado, Bucks

When
July 29, 4:59 PM EST to 5:01 PM EST
Where
Bucks County, 1.73 mi S of New Hope to 1.91 mi S of New Hope
Rating
EF2
Path length
0.28 mi
Path width
400 yd
Continued into
Mercer, Nj (PHI)
Reported by
NWS Storm Survey
Coordinates
40.345, -74.948

The supercell storm which produced a tornado in Plumstead Twp in Bucks County|cycled and produced another tornado beginning in New Hope in |Bucks County, Pennsylvania. Tree damage began near River Rd just |west of the Delaware River, with a portion of River Rd closed and |impassable due to downed trees. The tornado then began to cross the Delaware River enroute to Mercer County, New Jersey.

Tornado, Philadelphia

When
July 29, 6:04 PM EST to 6:06 PM EST
Where
Philadelphia County, 0.74 mi NNW of Byberry to 0.9 mi NNE of Byberry
Rating
EF3
Path length
0.62 mi
Path width
530 yd
Continued into
Bucks, Pa (PHI)
Reported by
NWS Storm Survey
Coordinates
40.130, -75.005

An EF3 tornado better known for its impacts it Bucks County, PA began briefly in Philadelphia County, PA. The tornado touched down near Southampton Road, Kelvin Avenue, and Trevose Road where it uprooted and blew down large limbs from a |few softwood and hardwood trees. The tornado then moved into Bucks County, with trees uprooted at the county line.

Tornado, Bucks

When
July 29, 6:06 PM EST to 6:12 PM EST
Where
Bucks County, 0.37 mi ENE of Belmont Hills to 0.84 mi NE of Stanwood
Rating
EF3
Path length
2.78 mi
Path width
530 yd
Reported by
NWS Storm Survey
Coordinates
40.132, -74.993

The tornado which began in Philadelphia County crossed into Bucks County, where it would produce the majority of its impacts. After crossing the county line, the tornado continued between Trevose Road and Peyton Street |where additional tree damage occurred before crossing Lukens |Street. The tornado then very briefly crossed back into |Philadelphia County at the northern tip of Poquessing Valley Park |where a few trees were uprooted. The tornado then crossed back |into Trevose in Bucks County where it caused some minor cosmetic |damage to some homes in the Beechwood Estates neighborhood and |blew down several sections of vinyl fencing. Several small trees |were also snapped or uprooted in and just south and east of the |residential neighborhood.

As the tornado approached Somerton Road, it began intensifying |and widening substantially as it moved into the Metropolitan |Industrial Center. Numerous softwood and hardwood trees were |snapped or uprooted in the SUEZ Water Company property southwest |of and along Somerton Road. Five wooden power poles were snapped |near the ground along Somerton Road as well at the northern end of|the SUEZ property. All seven warehouse buildings in the |industrial complex northeast of Somerton Road sustained at least |minor damage, with the most significant occurring to the Northtec |building. Numerous roof mounted HVAC units were shifted or blown |off of a few of the buildings in the industrial complex. Open bay |doors in the western- most building caused a non-load bearing |interior wall to collapse. A sedan was lifted and flipped over in |the Northtec parking lot and a steel flag pole bearing a flag |flattened completely to the ground. The Northtec building |sustained substantial structural damage where large sections of |roofing material were removed. Additionally, numerous exterior |paneling was blown off, garage bay doors were blown out, a few |windows were blown out, and at least two large HVAC units were |blown off of the building. Numerous softwood and hardwood trees |were uprooted or snapped in the industrial complex and immediately|adjacent areas.

A cellphone tower adjacent to the industrial complex had all of |the antennas blown off, but the tower itself did not collapse. |Southeast of the industrial complex, minor cosmetic damage |occurred to some homes along Carter Road in a residential |neighborhood. Tree damage associated with the tornado occurred |along Carter Road and Sussex Road north of Buckfield Terrace. This|was the area where the tornado circulation reached its widest |extent of around three tenths of a mile. As the tornado neared and|crossed the Pennsylvania Turnpike (I- 276), an overhead roadway |information sign was blown off and a portion of it landed |downstream nearly a half mile away. Just north of the turnpike, |minor cosmetic damage occurred to a hotel building where a tree |was also uprooted in the parking lot. A large billboard was blown |over just north of the turnpike and south of Street Road. A small |utility building nearby had its roof blown off. The northern- most|extent of the damage occurred on the Toscana 52 restaurant |property where the tornado blew down some chain link fencing and |uprooted a few small trees in the parking lot.

The tornado continued east-northeastward across Street Road |toward the Faulkner car dealership complex where it began |intensifying and somewhat narrowing its path of damage. The four |dealership showrooms sustained significant damage where most |windows were blown out and at least some roofing material was |blown off. The most significant damage occurred to the Buick/GMC |showroom where most of the roofing material was blown off, all |windows and doors were blown out, and exterior walls exhibited |fracturing due to stress from the wind. Roof HVAC units of this |building were tossed into the parking lot behind the building. All|of the dealership signs near the main road were destroyed. Scores|of new and used vehicles sustained significant damage from flying|debris or from being pushed or tossed trough the air.

The tornado continued toward the dealership's main service garage|where the most significant damage occurred. The southwestern |portion of the building was destroyed with most exterior walls |collapsing completely and all roofing material blown off. Interior|walls mostly remained standing. Roof HVAC units were tossed off |of the building with one unit landing nearly 200 yards downstream |of the building. Damage sustained to the building decreased |somewhat toward the eastern end of it where portions of the |exterior walls were damaged and almost all garage bay doors were |blown out. The wind rushing through the garage area carried |debris, car parts, and tools well away from the structure |downstream. Some vehicles near the main garage building were |completely destroyed from large pieces of flying debris or from |being tossed and dropped back onto the ground. A small pickup |truck was crushed from a collapsed exterior wall. Five people |reportedly sustained minor injuries at the dealership complex.

The tornado continued east-northeast toward the Weisser Homes |mobile home park and into an area of trees which sustained |significant damage. Most tree canopies and limbs were completely |stripped from the still standing or snapped trunks of hardwood |trees in this area. A large storage container filled with car |parts from the service garage parking lot upstream was lofted into|the air and dropped into this area of trees. An uninhabited |mobile home model was lifted and completely destroyed at the |mobile home park. Another double-wide mobile home had a large |portion of its roof blown off. Several other mobile home sustained|varying degrees of damage as well. A large amount of various |debris from the dealership complex landed in this mobile home |park. Numerous softwood and hardwood trees near and just |downstream of this area were snapped or uprooted along Old Lincoln|Highway.

At this stage, the tornado damage path narrowed considerably and |intensity weakened significantly as it crossed Old Lincoln Highway|and moved toward the Lowe's and Walmart shopping centers on Route|1. The tornado passed over these shopping centers, but no |structural damage was noted to these structures. Numerous small |trees were snapped and uprooted in the large parking lot area and |line of trees just north of the Bensalem turnpike interchange. |Some exit ramp signs were blown down in the interchange area.

The tornado damage became somewhat discontinuous as it continued |east-southeast into Bensalem across Route 1 and toward a |residential neighborhood. Several homes in the neighborhood |sustained loss of some roofing material and other cosmetic damage |in addition to some tree damage. The tornado continued across |Rockhill Road and along Richlieu Road toward the Christian Life |Center where several trees were snapped or uprooted. The church's |steeple had some paneling blown off, but the steeple itself was |not damaged otherwise. The tornado continued weakening as it |crossed Galloway Road then dissipated in the Bensalem Township |Community Park where some minor tree damage occurred.

No known serious injuries or fatalities occurred from this |tornado.

Tornado, Philadelphia

When
July 29, 6:07 PM EST to 6:08 PM EST
Where
Philadelphia County, 0.21 mi NW of Bustleton to 0.26 mi E of Bustleton
Rating
EF0
Path length
0.44 mi
Path width
40 yd
Reported by
NWS Storm Survey
Coordinates
40.082, -75.033

A brief tornado occurred in the Bustleton section of Northeast |Philadelphia. Damage was first observed near Grant Ave at the |Grant Gardens apartment complex, where some minor loss of roofing|material was noted and debris was tossed in a chaotic manner |consistent with tornadic winds. The tornado moved east-southeast |across Roosevelt Blvd. Continued minor structural damage was noted|along a narrow path, mainly consisting of sporadic losses of |siding and insulation. Minor tree damage was also noted. One |building also had ceiling tiles pulled downward with insulation |removed in a car park area, a strong indicator of tornadic |pressure gradient forces. Near Blue Glass Rd, a couple of slightly|larger trees had their trunks snapped, and winds of around 80 mph|likely occurred in that area. The damage path ended near there, |however, after a track length of only around half a mile. Radar |data indicates this was an anticyclonic tornado.

What these are

Tornado
A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Funnel Cloud
A rotating column of cloud extending from a thunderstorm that did not reach the ground.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Pennsylvania in 2021Every state in 2021This day in weather historyThe tornado archive for Pennsylvania, 2021Warnings in Pennsylvania, July 2021

Sources

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: 965608, 965416, 965609, 965413, 965419, 965616, 965412, 965415, 965418, 965631, 965417, 965632, 971957, 971958, 965634.