Pennsylvania, 2021

Hail and Damaging Winds in Pennsylvania, June 4, 2021

June 4, 2021 · NWS PHI · 28 events in 5 counties and zones

A weak cold front dissipated west of the mid-Atlantic on June 4. However, a lingering surface trough slowly moved through the region.

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
28

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 weak cold front dissipated west of the mid-Atlantic on June 4. However, a lingering surface trough slowly moved through the region. With a lingering warm and moist air mass in place, the surface trough caused convection to develop, starting early in the afternoon. Despite weak wind shear, storms steadily increased in organization, aided by favorable mesoscale interactions. Several storms would go on to pose a threat for damaging winds and hail. Storms eventually coalesced into multiple linear segments which posed a continued wind damage threat. Storms moved offshore by early to mid evening, with a drier air mass behind them.

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 Jun 4, 8:25 AM EST, 3 hours 39 minutes earlier.

Area forecast discussion, Jun 4, 8:25 AM EST, 3 hours 39 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
925 AM EDT Fri Jun 4 2021

.SYNOPSIS...
A cold front will cross the region later today. High pressure will
become established over the Western Atlantic over the weekend and
will remain in place through the week.

&&

.NEAR TERM /THROUGH TONIGHT/...
Clouds over the area are beginning to lift and thin out a bit.
Otherwise, forecast is mostly on track.

Low pressure over the Great Lakes will track east, and a diffuse
frontal boundary extends south of it through the Ohio Valley,
and is associated with a weak upper trough.

The upper-level trough will migrate eastward today, but it will
be running into strong ridging in the western Atlantic. Thus,
it will be in the process of deamplifying and becoming more
positively-tilted with time. The attendant surface boundary
will be weakening as it approaches the area today. Nevertheless,
sufficient subsynoptic lifting mechanisms (including
convergence along the boundary) are expected to generate another
round of convection this afternoon along/east of the higher
terrain. The extent of the convection is the first forecast
concern, as the weakening nature of the synoptic-scale lift
combines with questions regarding diurnal destabilization from
the residual cloudiness this morning to suggest limitations in
overall coverage. Convection-allowing models are quite variable
with convective coverage this afternoon. Currently thinking that
coverage will be lower than yesterday, but should be high
enough to justify chance to low-end likely PoPs across the area
this afternoon (highest in the north, closer to the track of the
midlevel vort max).

Second question will be the intensity of the storms. Model
soundings continue to present some inhibiting factors for a more
robust severe threat, including weak flow in the lowest 2-4 km
(generally at or below 20 kt) and residual weak midlevel lapse
rates. Some cooling should occur in the midlevels with time as
the vort max approaches, and my suspicion is that models are
underplaying this a tad. Should this be the case, and if pockets
of insolation can heat the boundary layer by this afternoon,
MLCAPE around or even in excess of 1000 J/kg could develop by
peak heating. This may compensate somewhat for the weak flow in
the lower troposphere. Deep-layer shear may also organize
convection, at least in a transient sense. As such,
isolated/brief severe storms with damaging wind gusts are
possible this afternoon, though this is by no means a sure bet.
SPC has maintained a marginal risk for the southern half or so
of the CWA today.

Once the vort max moves east of the region this evening,
chances for convection will end quickly (especially with
nocturnal stabilization). Aside from some potential for patchy
fog overnight (primarily if more widespread precipitation occurs
than is currently forecast), tonight should be uneventful.

Forecast highs today are right around model consensus...in the
upper 70s to lower 80s. Lows tonight will be quite mild, as
there should be little cooling/drying upstream of the decaying
surface front, with values generally in the 60s.

&&

.SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/...
High pressure settles over the Western Atlantic on Saturday,
becoming well established through the weekend. With the high in
place, we will see a return flow develop across our region and that
signals an increase in temperatures along with increasing dewpoints.
850mb temps will be in the mid teens, signaling that we can
start to expect some daytime max temps in the 90s.

The heat wave looks to start with Saturday as highs reach into the
upper 80s to lower 90s across the forecast area. While we will have
little to no cloud cover heading through Saturday night, overnight
lows will remain warm in the southwest flow dropping into the mid to
upper 60s.

On Sunday, the flow deepens and we see the temperatures rise even
more, reaching well into the low to mid 90s. With dew points on the
rise though, it will start to feel a bit steamy outside. Sunday
night will be even warmer than Saturday night as many places,
especially areas in the urban corridor, will struggle to drop below
70 overnight.

While it will be hot inland this weekend, the shore will be only
slightly more bearable with highs in the mid to upper 80s on
Saturday, and upper 80s to around 90 on Sunday. A sea breeze may
develop Sunday afternoon, which would provide further relief.

&&

.LONG TERM /MONDAY THROUGH THURSDAY/...
The heat continues as we head through the week with the high moving
little (if at all) over the Atlantic. 850mb temps remain between 15C
to 20C, so expect highs to be in the low to mid 90s Monday through
at least Wednesday. The high remains offshore but the ridging across
the Mid_atlantic starts to break down a bit around midweek, which
should help to break the heat down a little. By Thursday, highs
should start to drop into the upper 80s. Additionally, the dew
points start to drop off some as head later into the week, providing
some relief there as well. Sea breezes in the afternoon may provide
some relief from the heat down the shore.

The need for any heat headlines will need to be monitored,
especially as this looks to be our first foray into a slightly
longer stretch of hot and humid weather.

Some convection, mainly diurnally driven, will be possible in the
afternoons through much of the week.

&&

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

This morning...CIG continue through this morning with primarily
MVFR gradually becoming mostly VFR by midday. Southwest winds 5
to 10 kt. Low confidence, with several TAF amendments likely
through 16z.

This afternoon...Conditions becoming primarily VFR. A chance of
showers and storms, though coverage is expected to be
isolated/scattered and timing is very uncertain. As such, no
inclusion of thunder or TEMPO groups in the TAFs at this time.
Southwest winds around 10 kt. Moderate confidence.

Tonight...Any remaining showers/storms should dissipate by sunset,
with mainly VFR prevailing thereafter. Winds light and variable.
There may be some patchy fog overnight if winds become nearly calm
and if precipitation coverage is higher than expected during the
day. Moderate confidence.

Outlook...

Saturday through Monday...VFR conditions expected. West to
southwest winds 5 to 10 knots. Sea breezes possible in the
afternoon, mainly at KACY and KMIV. Some fog is possible during
the late night and early mornings. High confidence.

Tuesday...VFR conditions expected. Showers and thunderstorms
possible in the afternoon. Southwest to west winds 5 to 10 knots.
Moderate confidence.

&&

.MARINE...
Seas will hover around 4 feet today and may approach 5 feet well
offshore. South to southwest winds of 10 to 20 kt are expected
today, diminishing somewhat tonight.

There is a chance of showers/storms through this evening, with the
best chances early this morning off the Delaware and southern New
Jersey coast and again this afternoon as more storms initiate on
land and approach the waters through early evening. Chances will
diminish quickly near/after sunset. Erratic winds/waves should be
expected in proximity to any storms that develop.

Outlook...

Saturday through Thursday...Sub-Small Craft Advisory conditions
expected through the period.

Rip Currents...

For today, the risk of rip currents along the New Jersey shore
is expected to be moderate due to southwesterly winds of 10 to
20 mph with some higher gusts. For coastline facing
predominantly southward, the rip current risk will be especially
elevated. For the Delaware beaches, the risk is expected to be
low. Similar conditions are expected on Saturday.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...None.

&&

Synopsis...Meola
Near Term...CMS/MPS
Short Term...Meola
Long Term...Meola
Aviation...CMS/Meola
Marine...CMS/Meola
Hazardous weather outlook, Jun 4, 5:53 AM EST, 6 hours 11 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
0653 AM EDT Fri Jun 04 2021

DEZ001-051053-
New Castle-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

DEZ002-051053-
Kent-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

DEZ003-051053-
Inland Sussex-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

DEZ004-051053-
Delaware Beaches-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

PAZ054-051053-
Carbon-
0653 AM EDT Fri Jun 04 2021

This Hazardous Weather Outlook is for Carbon County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

PAZ055-051053-
Monroe-
0653 AM EDT Fri Jun 04 2021

This Hazardous Weather Outlook is for Monroe County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

PAZ060-051053-
Berks-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

PAZ061-051053-
Lehigh-
0653 AM EDT Fri Jun 04 2021

This Hazardous Weather Outlook is for Lehigh County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

PAZ062-051053-
Northampton-
0653 AM EDT Fri Jun 04 2021

This Hazardous Weather Outlook is for Northampton County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

PAZ070-051053-
Delaware-
0653 AM EDT Fri Jun 04 2021

This Hazardous Weather Outlook is for Delaware County in Pennsylvania.

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

PAZ071-051053-
Philadelphia-
0653 AM EDT Fri Jun 04 2021

This Hazardous Weather Outlook is for Philadelphia County in
Pennsylvania.

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

PAZ101-051053-
Western Chester-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

PAZ102-051053-
Eastern Chester-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

PAZ103-051053-
Western Montgomery-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

PAZ104-051053-
Eastern Montgomery-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

PAZ105-051053-
Upper Bucks-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

PAZ106-051053-
Lower Bucks-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ001-051053-
Sussex-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ007-051053-
Warren-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ008-051053-
Morris-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ009-051053-
Hunterdon-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ010-051053-
Somerset-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ012-051053-
Middlesex-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ013-051053-
Western Monmouth-
0653 AM EDT Fri Jun 04 2021

This Hazardous Weather Outlook is for western Monmouth County in New
Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ014-051053-
Eastern Monmouth-
0653 AM EDT Fri Jun 04 2021

This Hazardous Weather Outlook is for eastern Monmouth County in New
Jersey.

.DAY ONE...Through tonight.

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

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ015-051053-
Mercer-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ016-051053-
Salem-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

NJZ017-051053-
Gloucester-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ018-051053-
Camden-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ019-051053-
Northwestern Burlington-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ020-051053-
Ocean-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

NJZ021-051053-
Cumberland-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

NJZ022-051053-
Atlantic-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

NJZ023-051053-
Cape May-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

NJZ024-051053-
Atlantic Coastal Cape May-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

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

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ025-051053-
Coastal Atlantic-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

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

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ026-051053-
Coastal Ocean-
0653 AM EDT Fri Jun 04 2021

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

.DAY ONE...Through tonight.

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

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

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.

NJZ027-051053-
Southeastern Burlington-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

MDZ012-051053-
Kent MD-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

MDZ015-051053-
Queen Annes-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

MDZ019-051053-
Talbot-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

MDZ020-051053-
Caroline-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

ANZ430-051053-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

ANZ431-051053-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

ANZ450-051053-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

ANZ451-051053-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

ANZ452-051053-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

ANZ453-051053-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

ANZ454-051053-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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.

ANZ455-051053-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
0653 AM EDT Fri Jun 04 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...Saturday through Thursday.

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, Jun 4, 12:02 PM EST, 2 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
102 PM EDT Fri Jun 4 2021

PAZ060-061-041730-
Lehigh-Berks-
102 PM EDT Fri Jun 4 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN BERKS AND CENTRAL
LEHIGH COUNTIES...

At 101 PM EDT, a strong thunderstorm was located over Lenhartsville,
or 14 miles north of Reading, moving east at 30 mph.

Wind gusts up to 50 mph and pea size hail are possible with this
storm.

Locations impacted include...
Allentown, Emmaus, Kutztown, Hamburg, Fleetwood, Topton,
Shoemakersville, Bally, Lyons, Strausstown, Lenhartsville,
Wanamakers, Zionsville, Ancient Oaks, Claussville, Macungie,
Alburtis, Centerport and Fullerton.

This includes the following highways...
 Northeast Extension between mile markers 49 and 60.
 Interstate 78 in Pennsylvania between mile markers 18 and 58.

If outdoors, consider seeking shelter inside a building.

LAT...LON 4052 7625 4054 7617 4057 7608 4058 7606
      4057 7602 4063 7600 4069 7587 4062 7548
      4042 7548 4045 7553 4040 7557 4051 7637
TIME...MOT...LOC 1701Z 275DEG 25KT 4054 7590

Davis

The radar

The Binghamton radar (KBGM), 128 km away, was scanning. The volume nearest the first event began at 17:01 UTC.

Open the radar archive at this moment

Event by event

22 thunderstorm wind, 6 hail. Local standard time, as filed.

Thunderstorm Wind, Monroe

When
June 4, 12:04 PM EST
Where
Monroe County, 1.48 mi NNE of Pocono Pines
Measured
50 kt (58 mph) estimated gust
Reported by
Utility Company
Coordinates
41.120, -75.460

A couple reports of downed tree limbs and wires on the north side of Pocono Pines. Time estimated from radar.

Thunderstorm Wind, Berks

When
June 4, 12:30 PM EST
Where
Berks County, 1.69 mi ESE of Stony Run
Measured
50 kt (58 mph) estimated gust
Reported by
Utility Company
Coordinates
40.608, -75.792

A tree was downed onto wires on Stagecoach Rd. Time estimated from radar.

Thunderstorm Wind, Monroe

When
June 4, 12:30 PM EST
Where
Monroe County, Bossardsville
Measured
50 kt (58 mph) estimated gust
Reported by
Utility Company
Coordinates
40.930, -75.280

Trees and wires were downed near Goodale Rd. Time estimated from radar.

Thunderstorm Wind, Monroe

When
June 4, 12:34 PM EST
Where
Monroe County, Stroudsburg
Measured
50 kt (58 mph) estimated gust
Reported by
Utility Company
Coordinates
40.980, -75.200

Several reports of downed tree limbs and wires in the Stroudsburg and East Stroudsburg areas. Time estimated from radar.

Thunderstorm Wind, Monroe

When
June 4, 12:53 PM EST
Where
Monroe County, 0.52 mi W of Deleware Water Gap
Measured
50 kt (58 mph) estimated gust
Reported by
Utility Company
Coordinates
40.980, -75.140

Reports of tree damage and wires down near Delaware Water Gap. Time estimated from radar.

Thunderstorm Wind, Montgomery

When
June 4, 1:02 PM EST
Where
Montgomery County, 0.31 mi ENE of Green Lane
Measured
50 kt (58 mph) estimated gust
Reported by
County Official
Coordinates
40.332, -75.465

A large tree was blown down near the intersection of Upper Ridge Rd and Green St. Time estimated from radar.

Hail, Berks

When
June 4, 1:13 PM EST
Where
Berks County, 1.72 mi WSW of Lobachsville
Measured
1 in hail
Reported by
Public
Coordinates
40.410, -75.760

An mPing report of quarter size hail.

Thunderstorm Wind, Bucks

When
June 4, 1:21 PM EST
Where
Bucks County, 1.26 mi ESE of Coopersburg
Measured
50 kt (58 mph) estimated gust
Reported by
Utility Company
Coordinates
40.510, -75.360

A tree was downed into wires near State Rd. Time estimated from radar.

Hail, Bucks

When
June 4, 1:30 PM EST
Where
Bucks County, 0.87 mi SE of Silverdale
Measured
1 in hail
Reported by
Public
Coordinates
40.340, -75.260

Thunderstorm Wind, Berks

When
June 4, 1:31 PM EST
Where
Berks County, 1.32 mi S of Shanesville
Measured
50 kt (58 mph) estimated gust
Reported by
Fire Department/Rescue
Coordinates
40.351, -75.701

Wires were downed on a vehicle on Long Lane Rd. Time estimated from radar and dispatch report.

Hail, Bucks

When
June 4, 1:35 PM EST
Where
Bucks County, 0.87 mi NW of Chalfont
Measured
0.88 in hail
Reported by
Trained Spotter
Coordinates
40.290, -75.210

Hail, Bucks

When
June 4, 1:40 PM EST
Where
Bucks County, New Britain
Measured
0.88 in hail
Reported by
Public
Coordinates
40.300, -75.180

Thunderstorm Wind, Montgomery

When
June 4, 1:41 PM EST
Where
Montgomery County, 1.05 mi E of Sassamansville
Measured
50 kt (58 mph) estimated gust
Reported by
County Official
Coordinates
40.350, -75.550

A tree was downed on Deep Creek Rd near Erb Rd. Time estimated from radar.

Thunderstorm Wind, Berks

When
June 4, 1:54 PM EST
Where
Berks County, 0.73 mi SW of Whitfield
Measured
50 kt (58 mph) estimated gust
Reported by
Department of Highways
Coordinates
40.342, -75.989

Downed utility on State Hill Rd near Keiser Blvd. Time estimated from radar.

Thunderstorm Wind, Montgomery

When
June 4, 2:01 PM EST
Where
Montgomery County, 1.34 mi ENE of Graterford
Measured
50 kt (58 mph) estimated gust
Reported by
County Official
Coordinates
40.240, -75.429

A tree was downed on Hudnut Rd near Skippack Pike. Time estimated from radar.

Thunderstorm Wind, Berks

When
June 4, 2:05 PM EST
Where
Berks County, 0.69 mi S of Wyomissing
Measured
50 kt (58 mph) estimated gust
Reported by
Utility Company
Coordinates
40.310, -75.950

Downed trees or limbs caused a power outage near Harding Ave. Time estimated from radar.

Thunderstorm Wind, Berks

When
June 4, 2:12 PM EST
Where
Berks County, 0.28 mi N of Montello
Measured
50 kt (58 mph) estimated gust
Reported by
Utility Company
Coordinates
40.324, -76.031

Tree limbs were downed on Wires near Ruth St. Time estimated from radar.

Thunderstorm Wind, Montgomery

When
June 4, 2:19 PM EST
Where
Montgomery County, Norristown
Measured
50 kt (58 mph) estimated gust
Reported by
State Official
Coordinates
40.120, -75.330

A couple of downed trees and wires were reported in Norristown. Time estimated from radar.

Thunderstorm Wind, Montgomery

When
June 4, 2:26 PM EST
Where
Montgomery County, 1.31 mi NNW of Ft Washington
Measured
50 kt (58 mph) estimated gust
Reported by
County Official
Coordinates
40.148, -75.229

A tree was downed near the intersection of Morris Rd and Beech Rd. Time estimated from radar.

Thunderstorm Wind, Montgomery

When
June 4, 2:29 PM EST
Where
Montgomery County, 1.01 mi S of Flourtown
Measured
50 kt (58 mph) estimated gust
Reported by
County Official
Coordinates
40.105, -75.220

A downed tree limb blocked Valley View Rd near Parkside Rd. Time estimated from radar.

Thunderstorm Wind, Montgomery

When
June 4, 2:30 PM EST
Where
Montgomery County, 0.69 mi N of Lafayette Hill
Measured
50 kt (58 mph) estimated gust
Reported by
State Official
Coordinates
40.090, -75.250

A couple of trees were downed in Whitemarsh Twp. Time estimated from radar.

Thunderstorm Wind, Montgomery

When
June 4, 2:31 PM EST
Where
Montgomery County, 0.15 mi WSW of Erdenheim
Measured
50 kt (58 mph) estimated gust
Reported by
Utility Company
Coordinates
40.099, -75.203

Tree limbs and wires were downed near Harston Ln. Time estimated from radar.

Thunderstorm Wind, Montgomery

When
June 4, 2:32 PM EST
Where
Montgomery County, 1.74 mi SE of Ambler
Measured
50 kt (58 mph) estimated gust
Reported by
State Official
Coordinates
40.150, -75.200

A couple of emergency services calls were made for downed trees and/or wires in Upper Dublin Twp. Time estimated from radar.

Thunderstorm Wind, Bucks

When
June 4, 2:48 PM EST
Where
Bucks County, 0.87 mi SE of Levittown
Measured
50 kt (58 mph) estimated gust
Reported by
Utility Company
Coordinates
40.140, -74.860

A tree or limbs downed onto wires with a power outage on Whitewood Dr. Time estimated from radar.

Thunderstorm Wind, Bucks

When
June 4, 2:56 PM EST
Where
Bucks County, 0.53 mi E of Andalusia
Measured
50 kt (58 mph) estimated gust
Reported by
Public
Coordinates
40.070, -74.970

A social media report of downed tree limbs and pea size hail. Time estimated from radar.

Hail, Philadelphia

When
June 4, 2:58 PM EST
Where
Philadelphia County, 2.96 mi SE of Byberry
Measured
0.75 in hail
Reported by
Trained Spotter
Coordinates
40.090, -74.960

Hail, Philadelphia

When
June 4, 3:04 PM EST
Where
Philadelphia County, 2.11 mi NW of West Philadelphia
Measured
1.25 in hail
Reported by
Public
Coordinates
39.970, -75.210

An mPing report of half dollar size hail.

Thunderstorm Wind, Philadelphia

When
June 4, 3:06 PM EST
Where
Philadelphia County, 1.26 mi S of Wayne Jct
Measured
50 kt (58 mph) estimated gust
Reported by
Utility Company
Coordinates
40.002, -75.169

Wires were downed near Clearfield St. Time estimated from radar.

What these are

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.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

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 historyWarnings in Pennsylvania, June 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: 952766, 952765, 952767, 952784, 952787, 952778, 952759, 952783, 952761, 952769, 952758, 952760, 952780, 952777, 952779, 952770, 952775, 952772, 952782, 952781, 952771, 952785, 952773, 952776, 952786, 952762, 952763, 952774.