Pennsylvania, 2019

Damaging Winds in Pennsylvania, July 22, 2019

July 22, 2019 · NWS PHI · 30 events in 8 counties and zones

A frontal boundary stalled over the mid-Atlantic on July 22. An approaching upper level trough helped spur the development of a wave of low pressure along the front.

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
30

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 frontal boundary stalled over the mid-Atlantic on July 22. An approaching upper level trough helped spur the development of a wave of low pressure along the front. A very favorable environment for convection and severe weather developed along and south of this boundary. Extremely high moisture content was present in the air mass, allowing moderate to strong instability to build during the heating of the day. The frontal boundary and developing low also helped to enhance both low level and deep layer shear to respectably strong values for midsummer. The result was a day of widespread severe weather. Discrete storms early in the afternoon gave way to a powerful mesoscale convective system in the evening which produced widespread damaging winds with considerable damage over a large area.

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 22, 3:04 PM EST, 36 minutes earlier.

Area forecast discussion, Jul 22, 3:04 PM EST, 36 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
404 PM EDT Mon Jul 22 2019

.SYNOPSIS...
A cold front will slowly make its way offshore through Tuesday, with
multiple waves of low pressure riding along it. By Wednesday, that
front should push further offshore, with high pressure building in
behind it. This large area of high pressure will continue to
influence our weather from the middle of this week into the weekend
and through beginning of next week.
&&

.NEAR TERM /UNTIL 6 AM TUESDAY MORNING/...
Severe weather and flash flooding threat continues into this
evening...

Storms beginning to pop over eastern PA into northern NJ in
unstable environment. At the surface, low pressure beginning to
develop over eastern PA along a diffuse frontal boundary while
in the upper levels shortwave energy associated with deepening
upper level trough is approaching from the west.

As we head through the late afternoon into early this evening,
Expect convection to become better organized...likely taking the
form of a line or line segments moving into our eastern PA zones and
affecting the I-95 corridor and points S/E over NJ and the
Delmarva during roughly the 5-8 pm time frame. Given ML CAPES
of 1500-2000 j/kg with effective bulk shear near 35 knots this
should allow for line to sustain itself and produce a good
potential for severe weather. Damaging winds look to be the
biggest threat given modest wind field aloft and steep low level
lapse rates which should help to aid in bringing downdrafts to
the surface. Do still have concerns that there could be
potential for isolate tornadoes with the most likely spot for
this being near and north of the front over portions of northern
NJ along the I-78 / I- 80 corridor where winds will be more
backed in the low levels. This heightened risk should also
extend west into adjacent portion of eastern PA. Finally,
flooding/flash flooding remains a threat given very high PWATs
though the one mitigating factor is that storms should be fast
moving.

By the mid evening, first round of convection should be off to the
east with a relative lull in activity likely as low pressure moves
east across Long Island. However the problem is that the trailing
front will get hung up across the area with upper level trough still
lagging off to the west over the Ohio Valley. And then by the late
evening into the overnight period (11pm - 2am) as more shortwave
energy arrives this should result in another wave developing along
the front with additional widespread showers and possible
embedded storms moving in from the SW. At this time front should
be hung up right around the I-95 corridor and it's this area we
are particularly concerned about for potentially heavy
showers/storms overnight as PWATs will remain very high with
some elevated instability to work with. Thus, flooding/flash
flooding still a threat especially if heavy rain hits areas
that happen to have also gotten hard hit this evening. Severe
weather threat by this time will be lower though. It will still
be another fairly warm and muggy night near and south of the
front across the urban corridor and points S/E with lows still
only getting down to the low 70s with high dew points as well.
It will be cooler north of here though with lows in the 60s.
&&

.SHORT TERM /6 AM TUESDAY MORNING THROUGH TUESDAY NIGHT/...

By Tuesday morning, second wave of low pressure will be slowly
moving off the New Jersey coast and this will help to gradually
drag the front farther south finally. As such, expect
rain/showers continuing into the early morning at least along
and south of the I-95 corridor with this activity gradually
ending from north to south through the late morning into the
afternoon with the frontal passage. Any of this additional rain
occuring Tuesday should not be as heavy with diminishing
instability but could still exacerbate any flooding issues that
could be ongoing from earlier. Not expecting much sun as area
remains under influence of deep upper trough to the west and
front only lingers just off the coast. Highs will generally be
in the mid to upper 70s and with dew points in the 60s it will
certainly feel much more comfortable!

Forecast becomes a little tricky for late day Tuesday into
Tuesday night as yet one more wave may try to develop along
front just off the coast and this could bring in another round
of rain/showers...mainly for coastal areas. It shouldn't be
particularly heavy though.
&&

.LONG TERM /WEDNESDAY THROUGH MONDAY/...
Overview...

An extended stretch of mainly dry and seasonable weather is expected
for most of this week and into the weekend. At upper levels, a
lingering trough will remain over the East from Wednesday into
Thursday. This trough will weaken and shift southward through the
week as a ridge moves out of the Great Lakes and builds into
southern Canada and New England. At the surface, a broad region of
high pressure will exist downstream the ridge and upstream the
trough. This high will start the midweek period over the Midwest,
and as the upper level features slowly shift, the high will
gradually make its way eastward. It will not crest over our region
until the weekend. Even by early next week, we will probably
continue to feel the influence of this high. The resulting sensible
weather is something we really have not seen much of this year:
several consecutive days (at least) of dry and quiet weather.
Temperatures also look near normal for this period, as we are
between cooler than normal air to the south associated with the
lingering trough, and much warmer than normal air that will
build in with the ridge well to our north.

Dailies...

Wednesday... Our early week frontal system will still be departing
on Wednesday, and it looks like considerable cloud cover and
possibly some light showers may linger towards the coast especially
in the morning. As a wave of low pressure moves offshore, some
guidance is even hinting at an inverted-trough like feature which
could throw some light showers back into coastal NJ. However, the
trend for the day will be clearing skies and drier weather,
especially to the west. Temperatures only getting into the low 80s
in most areas with the cooler air behind the front.

Wednesday night-Saturday... Dry and quiet. A very gradual warming
trend in 850mb temperatures should yield a slow warming trend at the
surface, with each day generally a degree or two warmer than the
previous but no warmer than the upper 80s by Saturday. Dew points
should remain comfortable also, with those also showing just a slow
uptrend heading towards the weekend but remaining well away from
the oppressive territory we have seen.

Sunday-Monday... Temperatures should continue coming up slowly
during this period, with some 90s potentially returning to the
picture. Humidity will also continue to creep up, but . A weak
frontal system may approach on Sunday, with possibly some showers up
north. However, high pressure still looks to be the dominant feature
into early next week, and we will likely have to wait until later in
the week to see any more robust frontal systems.

&&

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

Through 0z...Strong to severe storms likely to affect most
terminals during the 20z to 0z time frame. Expect restrictions
to IFR or lower with wind gusts of 35-40+ knots possible.

Tonight...First round of storms should be off the coast by 0z
but additional rounds of showers with possible storms likely
for the late evening into the overnight with cigs to at least
MVFR likely by this time to even IFR possible.

Tuesday...Rain/showers should be tapering off but MVFR
restrictions likely to continue for most sites through most of
the morning if not into the early afternoon in some places.

Outlook...

Wednesday... Mainly VFR, except MVFR possible at least through the
morning at MIV and ACY. Winds north-northeast at 5 to 10 kt.

Wednesday night-Saturday... An extended period of quiet, VFR
conditions is expected. Winds mainly light and variable, favoring
light easterly flow if anything.

&&

.MARINE...
Marginal SCA conditions at times for the coastal waters as low
pressure develops over PA then moves off the coast. Bigger
Story will likely be strong to severe storms moving over the
coastal waters (as well as the Delaware Bay) this evening and
these could produce wind gusts of 40-50 knots in the strongest
storms. These should be east of the waters by late evening.

For Tuesday, SCA level seas likely to continue most of the
morning even as winds diminish so SCA runs until noon.
Conditions sub SCA by Tuesday night but more rain/showers
possible with reduced visibilities as front will be stalled over
coastal waters.

Outlook...

Wednesday-Saturday... Winds and seas are expected to remain below
SCA criteria. 3 to 4 foot seas Wednesday diminish to mainly 2 to 3
feet for the remainder of the period.

RIP CURRENTS...
An increasing southerly wind fetch and building waves are
expected to create a moderate risk for the development of
dangerous rip currents today along the New Jersey shore. The
Delaware coastline is expected to have a low risk or the
development of dangerous rip currents today.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Flash Flood Watch through Tuesday morning for PAZ054-055-
     060>062-070-071-101>106.
     Heat Advisory until 7 PM EDT this evening for PAZ070-071-102-
     104-106.
NJ...Flash Flood Watch through Tuesday morning for NJZ001-007>010-
     012>027.
     Heat Advisory until 7 PM EDT this evening for NJZ015>019-021-
     023-024.
DE...Flash Flood Watch through Tuesday morning for DEZ001>004.
     Heat Advisory until 7 PM EDT this evening for DEZ001>004.
MD...Flash Flood Watch through Tuesday morning for MDZ008-012-015-
     019-020.
     Heat Advisory until 7 PM EDT this evening for MDZ008-012-015-
     019-020.
MARINE...Small Craft Advisory until noon EDT Tuesday for ANZ450>455.

&&

Synopsis...O'Brien
Near Term...Fitzsimmons
Short Term...Fitzsimmons
Long Term...O'Brien
Aviation...Fitzsimmons/O'Brien
Marine...Fitzsimmons/O'Brien
Hazardous weather outlook, Jul 22, 1:33 PM EST, 2 hours 7 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
233 PM EDT Mon Jul 22 2019

NJZ001-007>010-PAZ054-055-060>062-101-103-105-231845-
Sussex-Warren-Morris-Hunterdon-Somerset-Carbon-Monroe-Berks-Lehigh-
Northampton-Western Chester-Western Montgomery-Upper Bucks-
233 PM EDT Mon Jul 22 2019

...FLASH FLOOD WATCH IN EFFECT THROUGH TUESDAY MORNING...
...SEVERE THUNDERSTORM WATCH 538 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

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

.DAY ONE...This afternoon and tonight.

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

   Flash Flood Watch.
   Severe Thunderstorm Watch.

Thunderstorms this afternoon and evening could produce severe
weather with damaging winds and torrential downpours being the
biggest threats.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

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

DEZ001>003-MDZ008-012-015-019-020-NJZ016-021-023-PAZ102-231845-
New Castle-Kent-Inland Sussex-Cecil-Kent MD-Queen Annes-Talbot-
Caroline-Salem-Cumberland-Cape May-Eastern Chester-
233 PM EDT Mon Jul 22 2019

...HEAT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...
...FLASH FLOOD WATCH IN EFFECT THROUGH TUESDAY MORNING...
...SEVERE THUNDERSTORM WATCH 538 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for central Delaware, northern
Delaware, southern Delaware, northeast Maryland, southern New
Jersey and southeast Pennsylvania.

.DAY ONE...This afternoon and tonight.

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

   Flash Flood Watch.
   Heat Advisory.
   Severe Thunderstorm Watch.

Thunderstorms this afternoon and evening could produce severe
weather with damaging winds and torrential downpours being the
biggest threats.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

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

NJZ014-025-026-231845-
Eastern Monmouth-Coastal Atlantic-Coastal Ocean-
233 PM EDT Mon Jul 22 2019

...FLASH FLOOD WATCH IN EFFECT THROUGH TUESDAY MORNING...
...SEVERE THUNDERSTORM WATCH 538 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

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

.DAY ONE...This afternoon and tonight.

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

   Flash Flood Watch.
   Severe Thunderstorm Watch.

Thunderstorms this afternoon and evening could produce severe
weather with damaging winds and torrential downpours being the
biggest threats.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

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

NJZ024-231845-
Atlantic Coastal Cape May-
233 PM EDT Mon Jul 22 2019

...HEAT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...
...FLASH FLOOD WATCH IN EFFECT THROUGH TUESDAY MORNING...
...SEVERE THUNDERSTORM WATCH 538 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for southern New Jersey.

.DAY ONE...This afternoon and tonight.

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

   Flash Flood Watch.
   Heat Advisory.
   Severe Thunderstorm Watch.

Thunderstorms this afternoon and evening could produce severe
weather with damaging winds and torrential downpours being the
biggest threats.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

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

DEZ004-231845-
Delaware Beaches-
233 PM EDT Mon Jul 22 2019

...HEAT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...
...FLASH FLOOD WATCH IN EFFECT THROUGH TUESDAY MORNING...
...SEVERE THUNDERSTORM WATCH 538 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for southern Delaware.

.DAY ONE...This afternoon and tonight.

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

   Flash Flood Watch.
   Heat Advisory.
   Severe Thunderstorm Watch.

Thunderstorms this afternoon and evening could produce severe
weather with damaging winds and torrential downpours being the
biggest threats.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

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

ANZ430-431-450>455-231845-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
233 PM EDT Mon Jul 22 2019

...SEVERE THUNDERSTORM WATCH 538 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

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

.DAY ONE...This afternoon and tonight.

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

   Severe Thunderstorm Watch.

Thunderstorms this afternoon and evening could produce wind gusts in
excess of 35 knots.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

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

NJZ015-017>019-PAZ070-071-104-106-231845-
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Eastern Montgomery-Lower Bucks-
233 PM EDT Mon Jul 22 2019

...HEAT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...
...FLASH FLOOD WATCH IN EFFECT THROUGH TUESDAY MORNING...
...SEVERE THUNDERSTORM WATCH 538 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

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

.DAY ONE...This afternoon and tonight.

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

   Flash Flood Watch.
   Heat Advisory.
   Severe Thunderstorm Watch.

Thunderstorms this afternoon and evening could produce severe
weather with damaging winds and torrential downpours being the
biggest threats.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

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

NJZ012-013-020-022-027-231845-
Middlesex-Western Monmouth-Ocean-Atlantic-Southeastern Burlington-
233 PM EDT Mon Jul 22 2019

...FLASH FLOOD WATCH IN EFFECT THROUGH TUESDAY MORNING...
...SEVERE THUNDERSTORM WATCH 538 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

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

.DAY ONE...This afternoon and tonight.

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

   Flash Flood Watch.
   Severe Thunderstorm Watch.

Heat index values in the upper 90s to around 100 degrees are
expected from late this morning to late this afternoon.

Thunderstorms this afternoon and evening could produce severe
weather with damaging winds and torrential downpours being the
biggest threats.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Local storm report, Jul 22, 2:31 PM EST, 1 hour 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
331 PM EDT MON JUL 22 2019

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

0314 PM     TSTM WND DMG     1 ENE LANDING           40.91N 74.65W
07/22/2019                   MORRIS             NJ   FIRE DEPT/RESCUE

            TREES AND WIRES DOWN ON OLIVER RD. TIME
            ESTIMATED FROM RADAR.

&&

JEO
Local storm report, Jul 22, 2:36 PM EST, 1 hour 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
336 PM EDT MON JUL 22 2019

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

0330 PM     TSTM WND DMG     1 NNE ROCKAWAY          40.92N 74.50W
07/22/2019                   MORRIS             NJ   PUBLIC

            SOCIAL MEDIA REPORT OF TREES DOWN ON GREEN
            POND RD.

&&

JEO
Special weather statement, Jul 22, 2:39 PM EST, 1 hour 1 minute before
Special Weather Statement
National Weather Service Mount Holly NJ
339 PM EDT Mon Jul 22 2019

PAZ060-222030-
Berks-
339 PM EDT Mon Jul 22 2019

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN BERKS COUNTY...

At 339 PM EDT, a strong thunderstorm was located over Pine Grove, or
10 miles northwest of Myerstown, moving east at 30 mph.

Locations impacted include...
Kutztown, Hamburg, Topton, Leesport, Shoemakersville, Bernville,
Strausstown, Lenhartsville and Centerport.

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.

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

LAT...LON 4052 7634 4052 7625 4058 7605 4057 7602
      4063 7600 4068 7590 4052 7565 4038 7626
      4049 7643
TIME...MOT...LOC 1939Z 248DEG 24KT 4051 7639

Meola
Local storm report, Jul 22, 3:03 PM EST, 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
403 PM EDT MON JUL 22 2019

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

0355 PM     HAIL             POMPTON PLAINS          40.97N 74.30W
07/22/2019  M1.00 INCH       MORRIS             NJ   PUBLIC

            SOCIAL MEDIA VIDEO OF HAIL WHICH APPEARED UP
            TO QUARTER SIZE. TIME ESTIMATED FROM RADAR.

&&

JEO
Local storm report, Jul 22, 3:15 PM EST, 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
415 PM EDT MON JUL 22 2019

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

0328 PM     TSTM WND DMG     1 S DOVER               40.88N 74.56W
07/22/2019                   MORRIS             NJ   FIRE DEPT/RESCUE

            TREES AND WIRES DOWN ON PENN AVE. TIME
            ESTIMATED FROM RADAR.

&&

JEO
Local storm report, Jul 22, 3:29 PM EST, 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
429 PM EDT MON JUL 22 2019

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

0314 PM     TSTM WND DMG     ROXBURY                 40.87N 74.66W
07/22/2019                   MORRIS             NJ   911 CALL CENTER

            MULTIPLE REPORTS OF WIRES DOWN NEAR ROXBURY.
            TIME ESTIMATED FROM RADAR.

&&

JEO

The radar

The Philadelphia radar (KDIX), 101 km away, was scanning. The volume nearest the first event began at 20:40 UTC.

Open the radar archive at this moment

Event by event

30 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Chester

When
July 22, 3:40 PM EST
Where
Chester County, 1.38 mi NW of Oakbourne
Measured
50 kt (58 mph) estimated gust
Reported by
Fire Department/Rescue
Coordinates
39.944, -75.598

A tree or limb blocked the roadway on Spruce Ave at Jones Ln. Time estimated from radar.

Thunderstorm Wind, Chester

When
July 22, 3:43 PM EST
Where
Chester County, 0.65 mi ESE of Oakbourne
Measured
50 kt (58 mph) estimated gust
Reported by
Public
Coordinates
39.926, -75.569

A tree was downed on Baywood Rd at Tower Course Dr. Time estimated from radar.

Thunderstorm Wind, Lehigh

When
July 22, 3:55 PM EST
Where
Lehigh County, 0.69 mi N of New Smithville
Measured
50 kt (58 mph) estimated gust
Reported by
Fire Department/Rescue
Coordinates
40.590, -75.730

Trees were downed on Willow Run Rd. Time estimated from radar.

Thunderstorm Wind, Lehigh

When
July 22, 3:55 PM EST
Where
Lehigh County, 0.87 mi NW of Hynemansville
Measured
50 kt (58 mph) estimated gust
Reported by
Public
Coordinates
40.610, -75.730

Trees and wires were downed in Weisenberg Twp. Time estimated from radar.

Thunderstorm Wind, Chester

When
July 22, 4:10 PM EST
Where
Chester County, 0.86 mi NE of Malvern
Measured
50 kt (58 mph) estimated gust
Reported by
Fire Department/Rescue
Coordinates
40.038, -75.517

A tree was downed onto wires on N Warren Ave at Pennsylvania Ave. Time estimated from radar.

Thunderstorm Wind, Lehigh

When
July 22, 4:10 PM EST
Where
Lehigh County, Old Zionsville
Measured
50 kt (58 mph) estimated gust
Reported by
Public
Coordinates
40.480, -75.520

Trees and wires were downed in Upper Milford.

Thunderstorm Wind, Lehigh

When
July 22, 4:11 PM EST
Where
Lehigh County, Old Zionsville
Measured
55 kt (63 mph) estimated gust
Reported by
Public
Coordinates
40.480, -75.520

Multiple trees downed on and near Kings Highway. Time estimated from radar.

Thunderstorm Wind, Berks

When
July 22, 4:12 PM EST
Where
Berks County, 0.53 mi W of Dale
Measured
50 kt (58 mph) estimated gust
Reported by
Fire Department/Rescue
Coordinates
40.420, -75.630

A tree was downed on Hardt Hill Rd. Time estimated from radar.

Thunderstorm Wind, Chester

When
July 22, 4:12 PM EST
Where
Chester County, 1.06 mi W of Birmingham
Measured
55 kt (63 mph) estimated gust
Reported by
Fire Department/Rescue
Coordinates
39.900, -75.600

Multiple trees were downed on and near Wylie Rd. Time estimated from radar.

Thunderstorm Wind, Northampton

When
July 22, 4:15 PM EST
Where
Northampton County, 0.12 mi E of North Catasaugua
Measured
50 kt (58 mph) estimated gust
Reported by
Public
Coordinates
40.680, -75.478

Downed tree on Howertown Rd. Time estimated from radar.

Thunderstorm Wind, Delaware

When
July 22, 4:15 PM EST
Where
Delaware County, 0.53 mi W of Grace Park
Measured
70 kt (81 mph) estimated gust
Reported by
Trained Spotter
Coordinates
39.880, -75.390

A trained spotter estimated 80mph wind gusts. Nearby reports and observations lent credence to the estimate.

Thunderstorm Wind, Chester

When
July 22, 4:16 PM EST
Where
Chester County, 0.45 mi WSW of Chatwood
Measured
50 kt (58 mph) estimated gust
Reported by
Department of Highways
Coordinates
39.968, -75.588

Downed utility pole on Paoli Pike. Time estimated from radar.

Thunderstorm Wind, Lehigh

When
July 22, 4:19 PM EST
Where
Lehigh County, Vera Cruz
Measured
50 kt (58 mph) estimated gust
Reported by
Department of Highways
Coordinates
40.500, -75.500

A tree was downed on I-476 south of the I-78 interchange. Time estimated from radar.

Thunderstorm Wind, Delaware

When
July 22, 4:22 PM EST
Where
Delaware County, 0.53 mi E of Springfield
Measured
70 kt (81 mph) estimated gust
Reported by
Emergency Manager
Coordinates
39.930, -75.320

Widespread damage was reported in Springfield with numerous trees and wires down. Time estimated from radar.

Thunderstorm Wind, Northampton

When
July 22, 4:22 PM EST
Where
Northampton County, 1.05 mi E of Westgate Hills
Measured
50 kt (58 mph) estimated gust
Reported by
Department of Highways
Coordinates
40.670, -75.360

A downed tree closed US-22 between Routes 512 and 191. Time estimated from radar.

Thunderstorm Wind, Berks

When
July 22, 4:26 PM EST
Where
Berks County, 0.87 mi ESE of Shanesville
Measured
50 kt (58 mph) estimated gust
Reported by
Fire Department/Rescue
Coordinates
40.363, -75.686

A tree was downed at the intersection of Koch Rd and Ironstone Dr. Time estimated from radar.

Thunderstorm Wind, Philadelphia

When
July 22, 4:28 PM EST
Where
Philadelphia County, 1.06 mi E of (Phl)philadelphia in
Measured
52 kt (60 mph) measured gust
Reported by
ASOS
Coordinates
39.880, -75.230

Measured by the ASOS at Philadelphia International Airport.

Thunderstorm Wind, Northampton

When
July 22, 4:30 PM EST
Where
Northampton County, 2.09 mi SE of South Easton
Measured
55 kt (63 mph) estimated gust
Reported by
Department of Highways
Coordinates
40.660, -75.190

State Highway 611 was closed between Browns Dr and Cedarville Rd from multiple downed trees. Time estimated from radar.

Thunderstorm Wind, Philadelphia

When
July 22, 4:30 PM EST
Where
Philadelphia County, 1.26 mi WNW of Tacony
Measured
61 kt (70 mph) estimated gust
Reported by
Public
Coordinates
40.030, -75.050

Gusts estimated to 70mph. Trees and power lines downed in the area. Time estimated from radar.

Thunderstorm Wind, Montgomery

When
July 22, 4:34 PM EST
Where
Montgomery County, 0.64 mi SE of Baederwood
Measured
50 kt (58 mph) estimated gust
Reported by
County Official
Coordinates
40.114, -75.111

Two eight-inch diameter tree limbs blocked Cloverly Ln near Sewell Ln. Time estimated from radar.

Thunderstorm Wind, Bucks

When
July 22, 4:37 PM EST
Where
Bucks County, 0.69 mi N of Richlandtown
Measured
55 kt (63 mph) estimated gust
Reported by
Public
Coordinates
40.480, -75.320

Multiple trees and wires were reported down. One or more houses in the area reportedly caught fire. Time estimated from radar.

Thunderstorm Wind, Bucks

When
July 22, 4:40 PM EST
Where
Bucks County, 0.69 mi S of Stanwood Gardens
Measured
55 kt (63 mph) estimated gust
Reported by
Public
Coordinates
40.110, -74.930

Multiple large trees were downed between Woodbine Ave and Street Rd. Time estimated from radar.

Thunderstorm Wind, Bucks

When
July 22, 4:40 PM EST
Where
Bucks County, 1.26 mi WNW of Stanwood
Measured
50 kt (58 mph) estimated gust
Reported by
Department of Highways
Coordinates
40.130, -74.970

A downed tree was reported on I-276 near the Neshaminy Falls Interchange. Time estimated from radar.

Thunderstorm Wind, Bucks

When
July 22, 4:42 PM EST
Where
Bucks County, 1.48 mi SSE of West Bristol
Measured
55 kt (63 mph) measured gust
Reported by
Mesonet
Coordinates
40.080, -74.870

Burlington NOS gauge.

Thunderstorm Wind, Bucks

When
July 22, 4:48 PM EST
Where
Bucks County, 2.33 mi SSE of Fairless
Measured
59 kt (68 mph) measured gust
Reported by
Mesonet
Coordinates
40.140, -74.750

Measured by Newbold NOS gauge.

Thunderstorm Wind, Chester

When
July 22, 4:50 PM EST
Where
Chester County, 1.09 mi WNW of Chadds Ford Jct
Measured
50 kt (58 mph) estimated gust
Reported by
Trained Spotter
Coordinates
39.874, -75.620

A downed tree or limb blocked US-1.

Thunderstorm Wind, Bucks

When
July 22, 4:55 PM EST
Where
Bucks County, 1.26 mi ESE of Morrisville
Measured
50 kt (58 mph) estimated gust
Reported by
Trained Spotter
Coordinates
40.210, -74.780

Trees were reported down in this area.

Thunderstorm Wind, Berks

When
July 22, 7:40 PM EST
Where
Berks County, 0.53 mi E of Leesport
Measured
50 kt (58 mph) estimated gust
Reported by
Public
Coordinates
40.450, -75.960

Downed power cables on NJ-61 between Wall St and Orchard Ln. Time estimated from radar.

Thunderstorm Wind, Berks

When
July 22, 7:50 PM EST
Where
Berks County, 2.21 mi WNW of Kutztown
Measured
50 kt (58 mph) estimated gust
Reported by
Fire Department/Rescue
Coordinates
40.530, -75.820

Downed tree and wires on Saucony Rd. Time estimated from radar.

Thunderstorm Wind, Lehigh

When
July 22, 8:00 PM EST
Where
Lehigh County, 1.26 mi ENE of New Tripoli
Measured
50 kt (58 mph) estimated gust
Reported by
Department of Highways
Coordinates
40.690, -75.730

At least one downed utility reported. 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.

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

The same day elsewhere

More

Every storm in Pennsylvania in 2019Every state in 2019This day in weather historyWarnings in Pennsylvania, July 2019

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: 833575, 833576, 833580, 833581, 833583, 833584, 833586, 833587, 833590, 833591, 833612, 833592, 833594, 833595, 833596, 833597, 833614, 833599, 833615, 833601, 833602, 833604, 833606, 833616, 833617, 833607, 833608, 833609, 833610, 833611.