Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 122, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 6, 2020, 3:36 PM EDT for Hunterdon County, Morris County, Somerset County, New Jersey. It was in force for 39 min. 13 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 6, 2020, 3:36 PM EDT (19:36 UTC)
- Expired
- Jul 6, 2020, 4:15 PM EDT
- In force
- 39 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 70.0 mph
Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 86 km from the middle of the area, began a volume at 19:38 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 6, 3:36 PM EDT | HAIL 1 | Morristown, NJ | CORRECTS PREVIOUS HAIL REPORT FROM MORRISTOWN. QUARTER-SIZED HAIL AT GINTY FIELD IN MORRISTOWN. TIME MODIFIED BASED ON RADAR, SOCIAL MEDIA INFORMATION, AND NEARBY HAIL REPORTS. |
| Jul 6, 3:37 PM EDT | TSTM WND DMG | Morris Plains, NJ | TREES AND WIRES DOWN IN MORRIS PLAINS. TIME ESTIMATED FROM RADAR. |
| Jul 6, 3:37 PM EDT | TSTM WND DMG | Morristown, NJ | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM MORRISTOWN. TREES AND WIRES DOWN IN MORRISTOWN. SEVERAL CARS WERE DAMAGED OR DESTROYED BY THE FALLING TREES. TIME ESTIMATED FROM RADAR. |
| Jul 6, 3:37 PM EDT | TSTM WND DMG | Morristown, NJ | TREES AND WIRES DOWN IN MORRISTOWN. TIME ESTIMATED FROM RADAR. |
| Jul 6, 3:38 PM EDT | TSTM WND DMG | Morris Plains, NJ | DOWNED TREES AND WIRES NEAR SPEEDWELL AVENUE IN MORRIS PLAINS. TIME ESTIMATED FROM RADAR. |
| Jul 6, 3:38 PM EDT | TSTM WND DMG | Morris Twp, NJ | TREES AND WIRES DOWN IN MORRIS TWP. TIME ESTIMATED FROM RADAR. |
| Jul 6, 3:40 PM EDT | TSTM WND DMG | 1 Ene Morristown, NJ | DOWNED TREES AND WIRES NEAR MORRIS AVENUE IN MORRISTOWN. TIME ESTIMATED FROM RADAR. |
| Jul 6, 3:43 PM EDT | TSTM WND DMG | 2 Nnw New Vernon, NJ | DOWNED TREES AND WIRES NEAR JENKS HILL ROAD IN NEW VERNON. TIME ESTIMATED FROM RADAR. |
| Jul 6, 3:43 PM EDT | TSTM WND DMG | Mendham, NJ | REPORTS OF DOWNED POWER LINES IN MENDHAM. TIME ESTIMATED FROM RADAR. |
| Jul 6, 3:48 PM EDT | TSTM WND DMG | 2 Nw New Vernon, NJ | DOWNED TREES AND WIRES NEAR MOUNT KEMBLE AVENUE IN NEW VERNON. TIME ESTIMATED FROM RADAR. |
| Jul 6, 3:55 PM EDT | TSTM WND DMG | Morristown, NJ | TREE DOWN ON MAPLE AVE. TIME ESTIMATED FROM RADAR. |
| Jul 6, 3:55 PM EDT | TSTM WND DMG | Morris Twp, NJ | A LARGE TREE WAS DOWNED ON SOUTH ST. TIME ESTIMATED FROM RADAR. |
| Jul 6, 4:00 PM EDT | TSTM WND DMG | 1 Ne Morris Twp, NJ | TREE DOWN ON MADISON AVE. TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched 13 storm reports to this severe thunderstorm warning; the first came 0 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 6, 1:38 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 7.6 hours before the alert went out and 134 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 100 J/kg
- Mixed-layer CIN
- -192 J/kg
- Mixed-layer LCL
- 1959 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
994
WUUS51 KPHI 061936 RRA
SVRPHI
NJC019-027-035-062015-
/O.NEW.KPHI.SV.W.0122.200706T1936Z-200706T2015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
336 PM EDT Mon Jul 6 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southern Morris County in northern New Jersey...
Northeastern Hunterdon County in northwestern New Jersey...
Northern Somerset County in northern New Jersey...
* Until 415 PM EDT.
* At 336 PM EDT, a severe thunderstorm was located over Morristown,
moving south at 10 mph.
HAZARD...70 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
* Locations impacted include...
Morristown, Somerville, Bridgewater, Madison, Florham Park, East
Hanover, Chatham, Morris Plains, Mendham, Peapack And Gladstone,
Chester, Far Hills, Parsippany, Long Valley, Martinsville,
Millington, Basking Ridge, Succasunna-Kenvil, North Plainfield and
Bernardsville.
This includes the following highways...
Interstate 78 in New Jersey between mile markers 25 and 42.
Interstate 80 in New Jersey between mile markers 42 and 46.
Interstate 287 in New Jersey between mile markers 15 and 42.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.
In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
&&
LAT...LON 4079 7437 4076 7438 4075 7436 4074 7437
4067 7446 4066 7445 4066 7440 4063 7442
4060 7445 4054 7473 4082 7482 4088 7439
4083 7433
TIME...MOT...LOC 1936Z 340DEG 7KT 4078 7447
HAIL...1.25IN
WIND...70MPH
$$
CMS2 follow-up statements
713
WWUS51 KPHI 062003
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
403 PM EDT Mon Jul 6 2020
NJC019-027-035-062015-
/O.CON.KPHI.SV.W.0122.000000T0000Z-200706T2015Z/
Morris NJ-Hunterdon NJ-Somerset NJ-
403 PM EDT Mon Jul 6 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR SOUTHERN MORRIS...NORTHEASTERN HUNTERDON AND NORTHERN SOMERSET
COUNTIES...
At 402 PM EDT, a severe thunderstorm was located over Madison, or
near Summit, moving south at 10 mph.
HAZARD...70 mph wind gusts and half dollar size hail.
SOURCE...Law enforcement. This storm has produced widespread tree
damage in Morristown.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Morristown, Somerville, Bridgewater, Madison, Florham Park, East
Hanover, Chatham, Morris Plains, Mendham, Peapack And Gladstone,
Chester, Far Hills, Parsippany, Long Valley, Martinsville,
Millington, Basking Ridge, Succasunna-Kenvil, North Plainfield and
Bernardsville.
This includes the following highways...
Interstate 78 in New Jersey between mile markers 25 and 42.
Interstate 80 in New Jersey between mile markers 42 and 46.
Interstate 287 in New Jersey between mile markers 15 and 42.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
Prepare immediately for large hail and damaging winds. People outside
should seek shelter inside a well-built structure and away from
windows.
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
&&
LAT...LON 4079 7437 4076 7438 4075 7436 4074 7437
4067 7446 4066 7445 4066 7440 4063 7442
4060 7445 4054 7473 4082 7482 4088 7439
4083 7433
TIME...MOT...LOC 2002Z 340DEG 7KT 4073 7445
HAIL...1.25IN
WIND...70MPH
$$
CMS764
WWUS51 KPHI 062010
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
410 PM EDT Mon Jul 6 2020
NJC019-027-035-062019-
/O.EXP.KPHI.SV.W.0122.000000T0000Z-200706T2015Z/
Morris NJ-Hunterdon NJ-Somerset NJ-
410 PM EDT Mon Jul 6 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MORRIS...NORTHEASTERN
HUNTERDON AND NORTHERN SOMERSET COUNTIES WILL EXPIRE AT 415 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However, heavy
rain is still possible with this thunderstorm. This storm brought
several trees down in the Morristown area.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
northern and northwestern New Jersey.
LAT...LON 4079 7437 4076 7438 4075 7436 4074 7437
4067 7446 4066 7445 4066 7440 4063 7442
4060 7445 4054 7473 4082 7482 4088 7439
4083 7433
TIME...MOT...LOC 2009Z 340DEG 7KT 4072 7445
$$
CMSWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 6, 9:47 AM EDT, 5 hours 49 minutes earlier.
Area forecast discussion, Jul 6, 9:47 AM EDT, 5 hours 49 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
947 AM EDT Mon Jul 6 2020
.SYNOPSIS...
A frontal boundary will lift north and stall across northern New
Jersey and east central PA today. The boundary will progress north
of the area on Tuesday. A summer-like pattern will then persist
throughout the week with scattered showers and thunderstorms
expected most days along with above average temperatures. A coastal
storm will the region Friday through Saturday as it moves north from
the Carolinas.
&&
.NEAR TERM /THROUGH TONIGHT/...
Continuing to watch the weak "cold" front slide southward out of
New York into Northern New Jersey and Pennsylvania. The front
looks to currently run nearly from east to west from Staten
Island through Allentown and then northwestward to near Buffalo,
NY. A front perhaps more noticeable on a dew point plot rather
than temperature alone. The front will begin to decelerate
through the day, with convective initiation to begin over the
next few hours over the region. Will monitor the potential
closely with a watch not entirely out of the question given
environmental parameters mentioned below.
Previous Discussion...
High pressure remains off the Mid-Atlantic coast, and southwest
flow behind the high will result in a hot and humid airmass
spreading into the region. Surface dew points will be in the
upper 60s to low 70s this morning, but with some afternoon
mixing, those dew points should drop off a bit, somewhat, into
the upper 60s to around 70. Highs today will be quite hot,
topping off in the low to mid 90s, except for the urban
corridor, which will be in the mid to upper 90s.
The Heat Index today will reach into the mid to upper 90s south
and east of the Fall Line, and will be around 100 along the
urban corridor. With these values in the urban corridor being
close enough to 100 for a few hours, we issued a Heat Advisory
for these regions in effect from noon through 6 pm.
A weak cold front lies across northern New Jersey and southeast
Pennsylvania, and this front will slide east throughout the day. An
upper trough lies over the Northeast, and west to northwest flow
aloft will be over the region. Some strong shortwaves will dive into
eastern Pennsylvania and northern New Jersey this afternoon.
With this heat and humidity, there will be abundant energy across
the region, with SB CAPE values as high as 3000-4000 J/kg, and ML
MUCAPE values 4000-5000 J/kg. PWATs will be around 2 inches, so will
expect heavy rain from storms. The question is how much shear there
will be, as the 00Z NAM indicating 20-25 kt 0-6 km Bulk Shear. If it
becomes a little stronger, generally 25-30 kt, convection could
become more organized, and more widespread severe thunderstorms will
be possible. Downdraft CAPE will be around 1500 J/kg, so strong and
damaging wind gusts are possible. Wet Bulb 0 heights will also be
11,000-12,000 feet, so some hail is possible as well.
The other thing to watch out for is afternoon sea breezes coming off
the ocean, as those boundaries could become a trigger for convection
before the cold front arrives.
&&
.SHORT TERM /TUESDAY THROUGH TUESDAY NIGHT/...
Convection continues in the evening hours as more shortwaves
approach from the west and the cold front slowly works its way south
through the region. CAPE values will diminish a bit after sunset
with loss of diurnal heating, but strong to severe thunderstorms
will continue to develop, as the warm and unstable airmass remains
in place.
The bulk of the activity should taper off by midnight or so, but
storms producing heavy rain remain possible through the late night
hours.
Another humid night on tap with lows in the 60s to low 70s.
&&
.LONG TERM /WEDNESDAY THROUGH SUNDAY/...
Summary: The extended forecast will feature continually active
convective weather likely through next weekend, although the primary
focus will be the influence of a departing coastal southern stream
low Friday and Saturday.
Synoptic pattern: A fairly progressive pattern is expected,
synoptically speaking, into this coming weekend. Tuesday will start
with an upper trough departing eastward over the north Atlantic then
as trough axis moves from the Great Lakes region east toward the
Canadian maritimes by early Thursday. Ridging will follow briefly in
the trough's wake late Thursday into Friday, then the attention
turns to the southern stream trough digging across the Midwest and
eventually into the southeast by Saturday. This trough will be the
driver of the next synoptically forced system to impact our region
into the weekend. Thankfully, it appears that the medium range
guidance is coming into better agreement with regard to timing and
evolution of the synoptic pattern during this period.
Sensible weather: The main theme for the upcoming long term period
is "unsettled." Basically every day will probably feature convection
in some way, shape, or form, however the mesoscale details beyond
Tuesday are essentially impossible to determine this far out.
Southerly surface flow will persist Tuesday and Wednesday pumping a
continual stream of warm and humid air into the region from the
south. So it'll be quite warm and humid, but not excessively so.
Expect maximum temperatures nearing 90 degrees and minimums around
70 both days along with dewpoints around 70 degrees along with
scattered showers and thunderstorms mainly during the late afternoon
and evening time frame.
Tuesday's convection and severe weather environmental setup will be
similar to today's with the exception of a few things. Lapse rates
will be lower (~6 C/km), so there won't be nearly as much of a hail
threat. Precipitable water values will be about the same (1.7-1.9"),
but the steering flow will be roughly parallel to the main
initiating boundary (oriented E-W across central NJ and eastern PA).
So flash flooding could be more of a concern. MLCAPE will remain
high (~3000 J/kg) south of the boundary with DCAPE locally over 1000
J/kg. Deep layer shear for organization will be considerably less
and flow aloft for forcing is also much less than today, so coverage
appears to be much lower. Nonetheless, we will need to watch for wet
microburst potential and flash flooding threats with Tuesday's
convection.
Synoptically speaking, Thursday appears to be the driest day as a
somewhat more prominent ridge passes to our north leading to more
subsidence locally. With that said, could still see more isolated
convective activity on Thursday. Surface flow will turn more
southeasterly as a surface low takes shape across the coastal
Carolinas. Still expecting highs right around 90 degrees and lows
around 70.
Guidance has come into better agreement that the southern stream
coastal low will lift north into the Mid-Atlantic Friday and depart
Saturday. This system will bring precipitable water values nearing
the "extreme" range for this latitude with values of 2.25-2.50"
depicted by the GFS. The precipitation evolution of this system is
still quite unclear at this time. I suspect there will be some sort
of showery tropical band or bands of rain that lifts north across
the eastern portion of the forecast area on Friday followed by more
diurnally driven convection later in the day as instability builds.
Both the GFS and ECMWF keep the highest QPF offshore, but with
surface flow turning easterly with high moisture content, it's
difficult to believe that QPF amounts will remain low over land.
On Saturday, the surface low will be departing to the north, but the
upper trough axis will remain to our west along with a very soupy
airmass and diurnally driven instability. So will still expect to
see widespread convection with heavy rain potential. The main
takeaway is that there is a heavy rain and potentially flash
flooding threat with this system. Thankfully the system will be
moving quickly, but it's something that will need to be watched
closely.
Temperatures are a bit uncertain Friday and Saturday since cloud
cover is a big question mark as of now, but with the tropical
airmass that will be advected northward, I see no reason why we
couldn't still get highs around 90 degrees. As you may have guessed,
dewpoints will rise into the mid 70s Friday and Saturday, so it'll
be quite uncomfortably humid regardless of the temperature. Long
story short, expect Friday and Saturday to be very warm, wet, and
humid.
Without any sort of strong cold front in the wake of this system,
it'll likely remain quite warm and humid into early next week.
&&
.AVIATION /14Z MONDAY THROUGH FRIDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE,
KRDG, KILG, KMIV, KACY and surrounding areas.
Today...Mainly VFR. Afternoon SHRA/TSRA will result in MVFR or IFR
conditions should storm pass over a given terminal. Thunderstorms
will be capable of heavy rain, small hail, and strong wind
gusts. Best timing of thunderstorms is after 18Z through roughly
02Z. South to southwest winds 10 kt or less. Sea breezes
possible as well today. Moderate confidence.
Tonight...SHRA/TSRA in the evening will begin to wind down, but will
become more scattered after midnight. Heavy rain and strong wind
gusts possible in TSRA in the evening. SW winds less than 10 kt.
Moderate confidence.
Outlook...
Tuesday through Thursday...Prevailing VFR expected, however
scattered showers and thunderstorms, generally between 18Z and 06Z
each day, may locally lower restrictions. Winds will be generally
southerly around 5-10 kts.
Friday...MVFR ceilings probable with southeasterly to easterly winds
around 5-10 kts. Scattered moderate to locally heavy showers with
embedded thunderstorms will lower visibility and ceiling
restrictions locally.
&&
.MARINE...
Today through tonight...Conditions will remain below Small Craft
Advisory criteria through the period. Showers and thunderstorms will
develop later this afternoon and continue into tonight, and those
storms will be capable of heavy rain resulting in reduced
visibilities, small hail, strong thunderstorm wind gusts.
Outlook...
Conditions are forecast to remain below advisory criteria through
Thursday, however southerly winds may gust up to 20 kts at times.
Seas will be generally 2-3 feet. Afternoon and evening showers and
thunderstorms are possible Tuesday through Thursday, which may
locally increase winds and seas.
On Friday, seas will build and may exceed 5 feet as winds become
easterly and increase to 15 kts with higher gusts possible. Small
Craft Advisory conditions are possible on Friday.
Rip Currents...
There is a low risk for the development of dangerous and life
threatening rip currents today through Tuesday. However, conditions
may be locally moderate near the times of low tide owing to
increasing southerly flow through the period.
&&
.EQUIPMENT...
The NOAA Weather Radio All Hazards broadcast from Hibernia
Park, PA (WNG704) remains off the air until further notice due
to damage to the antenna during the June 3 derecho.
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Heat Advisory until 6 PM EDT this evening for PAZ070-071-102-
104-106.
NJ...Heat Advisory until 6 PM EDT this evening for NJZ015-017>019.
DE...Heat Advisory until 6 PM EDT this evening for DEZ001.
MD...None.
MARINE...None.
&&
Synopsis...Staarmann
Near Term...Davis/MPS
Short Term...MPS
Long Term...Staarmann
Aviation...Davis/MPS/Staarmann
Marine...MPS/Staarmann
Equipment...WFO PHIHazardous weather outlook, Jul 6, 3:27 PM EDT, 9 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 327 PM EDT Mon Jul 6 2020 DEZ002-003-MDZ012-015-019-020-NJZ021-023-071930- Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline-Cumberland- Cape May- 327 PM EDT Mon Jul 6 2020 ...SEVERE THUNDERSTORM WATCH 333 IN EFFECT UNTIL 11 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central Delaware, southern Delaware, northeast Maryland 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. Severe Thunderstorm Watch. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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. DEZ001-MDZ008-NJZ016-071930- New Castle-Cecil-Salem- 327 PM EDT Mon Jul 6 2020 ...FLASH FLOOD WATCH IN EFFECT UNTIL 9 PM EDT THIS EVENING... ...SEVERE THUNDERSTORM WATCH 333 IN EFFECT UNTIL 11 PM EDT THIS EVENING... This Hazardous Weather Outlook is for northern Delaware, northeast Maryland 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. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. DEZ004-NJZ024-071930- Delaware Beaches-Atlantic Coastal Cape May- 327 PM EDT Mon Jul 6 2020 ...SEVERE THUNDERSTORM WATCH 333 IN EFFECT UNTIL 11 PM EDT THIS EVENING... This Hazardous Weather Outlook is for southern Delaware 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. Severe Thunderstorm Watch. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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>455-071930- 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- 327 PM EDT Mon Jul 6 2020 This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...This afternoon and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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. ANZ430-431-071930- Delaware Bay waters north of East Point NJ to Slaughter Beach DE- Delaware Bay waters south of East Point NJ to Slaughter Beach DE- 327 PM EDT Mon Jul 6 2020 ...SEVERE THUNDERSTORM WATCH 333 IN EFFECT UNTIL 11 PM EDT THIS EVENING... This Hazardous Weather Outlook is for 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. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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. NJZ001-007>010-012-013-020-022-027-PAZ054-055-060>062-101-103-105- 071930- Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Ocean-Atlantic-Southeastern Burlington-Carbon-Monroe-Berks-Lehigh- Northampton-Western Chester-Western Montgomery-Upper Bucks- 327 PM EDT Mon Jul 6 2020 ...SEVERE THUNDERSTORM WATCH 333 IN EFFECT UNTIL 11 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central New Jersey, northern New Jersey, northwest New Jersey, southern 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. Severe Thunderstorm Watch. .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-PAZ070-071-102-104-106-071930- Mercer-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- 327 PM EDT Mon Jul 6 2020 ...FLASH FLOOD WATCH IN EFFECT UNTIL 9 PM EDT THIS EVENING... ...SEVERE THUNDERSTORM WATCH 333 IN EFFECT UNTIL 11 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. Severe Thunderstorm Watch. .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. NJZ014-025-026-071930- Eastern Monmouth-Coastal Atlantic-Coastal Ocean- 327 PM EDT Mon Jul 6 2020 ...SEVERE THUNDERSTORM WATCH 333 IN EFFECT UNTIL 11 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. Severe Thunderstorm Watch. .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.
In the hours before
Local storm report, Jul 6, 3:19 PM EDT, 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
319 PM EDT MON JUL 6 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0315 PM HAIL PHOENIXVILLE 40.14N 75.51W
07/06/2020 E1.25 INCH MONTGOMERY PA PUBLIC
REPORT VIA SOCIAL MEDIA WITH PHOTOS OF HAIL
A LITTLE LARGER THAN QUARTER SIZE.
&&
JEOLocal storm report, Jul 6, 3:22 PM EDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
322 PM EDT MON JUL 6 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0305 PM HEAVY RAIN FOX CHASE 40.08N 75.08W
07/06/2020 M4.90 INCH PHILADELPHIA PA TRAINED SPOTTER
&&
JEOLocal storm report, Jul 6, 3:24 PM EDT, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
324 PM EDT MON JUL 6 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0320 PM HAIL 1 SSW SOUTH PLAINFIELD 40.57N 74.42W
07/06/2020 E1.00 INCH MIDDLESEX NJ TRAINED SPOTTER
&&
JEOLocal storm report, Jul 6, 3:26 PM EDT, 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
326 PM EDT MON JUL 6 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0320 PM HAIL 1 W PERTH AMBOY 40.51N 74.28W
07/06/2020 E1.00 INCH MIDDLESEX NJ TRAINED SPOTTER
&&
JEOLocal storm report, Jul 6, 3:27 PM EDT, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
327 PM EDT MON JUL 6 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0314 PM FLASH FLOOD CHELTENHAM 40.06N 75.11W
07/06/2020 MONTGOMERY PA COUNTY OFFICIAL
WATER RESCUE AT RYERS AVENUE IN CHELTENHAM.
&&Local storm report, Jul 6, 3:31 PM EDT, 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
331 PM EDT MON JUL 6 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0320 PM FLASH FLOOD MOORESTOWN TWP 39.97N 74.95W
07/06/2020 BURLINGTON NJ NWS EMPLOYEE
WEST CENTRAL AVE IN MOORESTOWN FLOODED AND
IMPASSABLE.
&&
JEOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 3:16 AM EDT | Heat Advisory | PHI | Burlington, Camden, Gloucester, Mercer | 12 hr |
| Jul 6, 12:45 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 60 min |
| Jul 6, 12:52 PM EDT | Flash Flood Watch | PHI | Burlington, Camden, Gloucester, Mercer, Salem | 8 hr |
| Jul 6, 12:57 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden | 2 hr |
| Jul 6, 1:08 PM EDT | Flash Flood Warning | PHI | Burlington, Camden | 4 hr |
| Jul 6, 1:15 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Monmouth | 60 min |
| Jul 6, 1:43 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 62 min |
| Jul 6, 1:52 PM EDT | Special Weather Statement | PHI | Ocean | 23 min |
| Jul 6, 2:00 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 75 min |
| Jul 6, 2:02 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Mercer, Middlesex, Monmouth, Ocean | 118 min |
| Jul 6, 2:39 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester, Ocean | 66 min |
| Jul 6, 2:41 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer | 49 min |
| Jul 6, 2:46 PM EDT | Special Marine Warning | PHI | 89 min | |
| Jul 6, 2:48 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Gloucester, Ocean | 4 hr |
| Jul 6, 2:51 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 39 min |
| Jul 6, 2:57 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester | 4 hr |
| Jul 6, 3:00 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 45 min |
| Jul 6, 3:14 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 46 min |
| Jul 6, 3:18 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Somerset | 42 min |
| Jul 6, 3:34 PM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth, Somerset | 116 min |
| Jul 6, 3:36 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Ocean | 54 min |
| Jul 6, 3:38 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 52 min |
| Jul 6, 3:44 PM EDT | Special Marine Warning | PHI | 61 min | |
| Jul 6, 3:44 PM EDT | Special Marine Warning | PHI | 61 min | |
| Jul 6, 3:47 PM EDT | Flash Flood Warning | PHI | Middlesex, Morris, Somerset | 4 hr |
| Jul 6, 3:47 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Camden, Cumberland, Gloucester, Salem | 58 min |
| Jul 6, 4:41 PM EDT | Special Marine Warning | PHI | 64 min | |
| Jul 6, 4:45 PM EDT | Special Marine Warning | PHI | 41 min | |
| Jul 6, 4:45 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland, Salem | 60 min |
| Jul 6, 4:58 PM EDT | Special Marine Warning | PHI | 62 min | |
| Jul 6, 5:24 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more | 4 hr |
| Jul 6, 5:39 PM EDT | Special Marine Warning | PHI | 66 min | |
| Jul 6, 5:43 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 47 min |
| Jul 6, 5:57 PM EDT | Special Marine Warning | PHI | 63 min | |
| Jul 6, 6:00 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 60 min |
| Jul 6, 6:43 PM EDT | Special Marine Warning | PHI | 44 min | |
| Jul 6, 6:56 PM EDT | Special Marine Warning | PHI | 47 min | |
| Jul 6, 7:18 PM EDT | Severe Thunderstorm Warning | PHI | Sussex, Warren | 36 min |
| Jul 6, 7:55 PM EDT | Special Weather Statement | PHI | Sussex | 50 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2020Every severe thunderstorm warning in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.