A weak surface trough moved into the area. This feature moved into a very unstable airmass as it was a hot and humid day.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PHI wrote it up.
A weak surface trough moved into the area. This feature moved into a very unstable airmass as it was a hot and humid day. Strong to severe thunderstorms developed, producing large hail and damaging wind gusts.
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 Sep 7, 6:33 PM EST, 51 minutes earlier.
Area Forecast Discussion
National Weather Service Mount Holly NJ
733 PM EDT Thu Sep 7 2023
.SYNOPSIS...
A weak surface trough will become established across parts of
our region today well ahead of a cold front. The cold front is
forecast to arrive during Friday before stalling in our region
over the weekend, then this front finally shifts offshore during
early next week. Another cold front looks to arrive later
Wednesday.
&&
.NEAR TERM /THROUGH FRIDAY/...
While the mid and upper-level ridge of high pressure responsible
for our heat wave this week has shifted offshore, today turned
out to be the hottest day overall for most of our area.
Some sites near the urban corridor including PHL topped out
near 97F. The heat advisory remains in effect until 8 PM. With
a bit more cloud cover, slightly lower temperatures, and perhaps
an earlier start for developing convection, have elected not to
issue another Heat Advisory for tomorrow as most, if not
everyone, will see heat index values less than 100F. Will let
the night shift make the final call on that for now.
A Severe Thunderstorm Watch is in effect in our area, mainly
northwest of I-95, through 9 PM this evening. Activity is
winding down right now as we stabilize a bit, but seeing some
showers and thunderstorms in areas north and west of the I-95
corridor. These will continue for the next few hours before
falling apart, with only scattered showers possible into the
early morning hours. Some patchy fog may develop in areas where
it rained, with another muggy night ahead. Marine layer stratus
and perhaps a bit of fog may push onto the NJ shore toward
morning as well.
For Friday, expect a mainly dry start to the day with showers
and thunderstorms developing toward midday or early afternoon as
another shortwave passes by in the south-southwest flow aloft,
while the main cold front slowly begins to approach our region
from west of the Appalachians. With more in the way of clouds
around and subsequently lower temperatures and low-level
heating, CAPE may be more limited than it is today, and the
shortwave does not look quite as strong as the one passing
through on Thursday. That said, overall the environment looks
very similar, and SPC has portions of our area in another Slight
Risk for Severe Thunderstorms, with the main threat being
damaging winds. Hi-res guidance seems to indicate storms will
develop locally possibly as early as midday, perhaps near or
just northwest of I-95, then gradually drift southeastward.
There may be more of a heavy rain and localized flooding threat
compared to today, particularly if any storms persist in urban
areas.
&&
.SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/...
Overall, the short term forecast remains on track. Conditions are
still expected to be a little cooler Saturday however still humid
with some showers and thunderstorms. As an upper- level trough
remains to our west, a weak cold front will be moving through our
region Friday night before stalling across our region into Saturday.
Convection from daytime Friday should tend to be on a downward trend
Friday night as the boundary layer cools and some areas become
worked over assuming some more organized convection occurs.
There may be a repeat performance on Saturday, although temperatures
will be a bit cooler and therefore the instability is forecast to be
lower. In addition the shear looks a little less, however ample
boundary layer heating should lead to steepening low-level lapse
rates once again. This would still support some convectively
generated strong surface wind gusts if strong enough convection
develops and especially if it organizes some. In addition, the
precipitable water values will be in the 1.5-2 inch range through
Saturday and therefore convection will produce locally heavy rain.
We can certainly use the rain as it has been dry, therefore the
overall flash flood risk may be more limited unless training of
convection occurs.
With the boundary beginning to move through the region and continued
cloud cover, high temperatures Saturday are forecast to be in the
mid to upper 80s for most locations.
&&
.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
Summary...Cooling temperatures and gradually lowering dew points
along with continued chances for some showers and thunderstorms
(potentially drier Tuesday).
Synoptic Overview...The axis of an upper-level trough initially to
our west is forecast to work across our area during Monday and
gradually weaken. A much stronger upper-level trough is forecast to
move across the Great Lakes region and adjacent Canada early in the
week before gradually shifting into the Northeast. The timing of
this feature will depend on the amplitude of it and if it closes off
or not. At the surface, a weak cold front draped across our region
Sunday into Monday is forecast to finally get pushed offshore into
Tuesday. The next cold front looks to arrive later Wednesday with a
reinforcing front possible on Thursday.
For Sunday and Monday...The axis of a gradually weakening upper-
level trough is forecast to arrive later Sunday and then cross our
region Monday. This will keep a weak surface front draped nearly
north to south across our area. Given some cooling aloft and some
additional forcing for ascent with the trough aloft, some increase
in convective development should occur each day especially in the
afternoon and early evening hours. While there will cooler
temperatures it will remain humid, however the instability will be
held down some which should mostly lower the severe thunderstorm
risk. Locally very heavy rain will be probable due to high
precipitable water values and potentially slower storm motions,
however the region needs the rain and this could limit the flash
flooding threat.
For Tuesday through Thursday...The weak cold front should be
offshore to start Tuesday with some drier air working in. This may
provide a window for no convection chances, however the next upper-
level trough working across the Great Lakes and toward the Northeast
will drive a cold front into our area later Wednesday with another
front possibly developing in its wake for Thursday. The details with
this front and the extent of convection will depend on the amplitude
and timing of the trough and associated surface cold front. The
surface dew points should lower some more Tuesday but then may creep
upward some Wednesday ahead of the next cold front.
We will continue to monitor Hurricane Lee, however the exact track
is uncertain so far out in time and therefore so are any possible
direct impacts. Increasing swells and rip currents into our area
however do look to become more likely with time.
&&
.AVIATION /00Z FRIDAY THROUGH TUESDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.
Tonight...Have removed mention of thunderstorms in the I-95 TAFs
for now as it looks like the bulk of the activity will miss
these terminals to the north and west. Will mainly be VFR though
some patchy fog and perhaps some stratus could work its way to
some terminals late tonight. Have kept KPHL VFR, but brought
KILG/KPNE/KTTN to a small period of MVFR between 09z-14z. For
KABE/KRDG, thunderstorms remain in the area and could move over
the terminals over the next few hours. Patchy fog and stratus
possible late. KMIV/KACY look to stay dry but some of the
guidance brings some marine stratus onshore, with some patchy
fog as well. Winds favoring a southerly direction around 5 kt or
less though variable directions possible at times. Moderate
Confidence.
Friday...VFR initially along most of the I-95 corridor, but
outside of that expect some patchy low clouds and fog with
conditions as low as IFR possible in some spots. Showers and
thunderstorms develop midday or early afternoon, by 18Z, and may
impact much of the area, but mainly inland from the coast.
Periods of MVFR ceilings and MVFR/IFR VSBY possible in/near any
thunderstorms, with locally gusty and erratic winds possible.
Winds prevailing out of the south/southwest around 5-10 kt. Low
confidence.
Outlook...
Saturday and Sunday...Periods of sub-VFR conditions probable along
some showers and thunderstorms. Greatest chance for showers and
thunderstorms is each afternoon and evening. Southerly winds 5-10
knots each day decreasing to 5 knots or less each night. Low
confidence.
Monday...Periods of sub-VFR conditions probable especially with some
showers and thunderstorms. Southwest to westerly winds 5-10 knots,
becoming northwesterly around 5 knots or less Monday night. Low
confidence.
Tuesday...Mainly VFR. Sub-VFR conditions possible with chances for
showers. Northerly winds around 5 to 10 kts. Moderate
confidence.
&&
.MARINE...
Conditions will remain below Small Craft Advisory criteria
through Friday. Winds S-SE 10 to 15 knots for this afternoon,
diminishing near shore and over DE Bay tonight, but otherwise
persisting into Friday. Waves on our ocean waters are expected
to be 2 to 3 feet, with waves on Delaware Bay at 2 feet or less.
Outlook...
Saturday through Monday...No marine headlines expected. Main concern
will be for showers/storms, though best coverage looks to stay
inland away from the waters. Winds generally southerly 10-15 kts.
Seas 2 to 4 ft.
Tuesday...Small Craft Advisory conditions possible. Seas begin to
build and may begin to approach 5 feet on Tuesday. Otherwise,
northerly winds around 10 knots.
Rip Currents...
A southwest wind 5 to 10 MPH this morning is forecast to become
south 10 to 15 MPH this afternoon along the coasts of Delaware
and New Jersey. Breaking waves are expected to be 1 to 2 feet
with a long period (around 10 second) easterly swell. We will
continue to carry a LOW risk for rip currents today.
A southerly wind is expected to increase to 10 to 15 MPH on
Friday with breaking waves of 1 to 2 feet. A long period
easterly swell (around 11 or 12 seconds) is forecast. Being that
conditions will likely be similar to those of today, we will
keep the mention of a LOW risk of rip currents.
&&
.CLIMATE...
Near record breaking heat has occurred today. Records were set
at Reading, Georgetown, Allentown, and Mount Pocono. This
appears to be the last day of the record heat.
Record High Temperatures
Thu Sept 7
Site Record/Year
Allentown (ABE) 91/2016
AC Airport (ACY) 94/1983
AC Marina (55N) 92/1983
Georgetown (GED) 94/1983
Mount Pocono (MPO) 85/2015
Philadelphia (PHL) 102/1881
Reading (RDG) 97/1983
Trenton (TTN) 94/1983
Wilmington (ILG) 95/1983
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Heat Advisory until 8 PM EDT this evening for PAZ070-071-102-
104-106.
NJ...Heat Advisory until 8 PM EDT this evening for NJZ010-012-013-
015>019.
DE...Heat Advisory until 8 PM EDT this evening for DEZ001.
MD...None.
MARINE...None.
&&
SYNOPSIS...Gorse
NEAR TERM...Dodd/Hoeflich
SHORT TERM...Gorse
LONG TERM...Gorse
AVIATION...Dodd/Gorse/Hoeflich/Iovino
MARINE...Gorse/Iovino
CLIMATE...NWS PHIHazardous Weather Outlook National Weather Service Mount Holly NJ 0724 PM EDT Thu Sep 07 2023 DEZ001-082324- New Castle- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for New Castle County in Delaware. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ002-082324- Kent- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Kent County in Delaware. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ003-082324- Inland Sussex- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for inland portions of Sussex County in Delaware. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ004-082324- Delaware Beaches- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for the Atlantic coastal portions of Sussex County in Delaware. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ054-082324- Carbon- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Carbon County in Pennsylvania. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ055-082324- Monroe- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Monroe County in Pennsylvania. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ060-082324- Berks- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Berks County in Pennsylvania. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ061-082324- Lehigh- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Lehigh County in Pennsylvania. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ062-082324- Northampton- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Northampton County in Pennsylvania. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ070-082324- Delaware- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Delaware County in Pennsylvania. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ071-082324- Philadelphia- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Philadelphia County in Pennsylvania. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ101-082324- Western Chester- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for western Chester County in Pennsylvania. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ102-082324- Eastern Chester- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for eastern Chester County in Pennsylvania. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ103-082324- Western Montgomery- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for western Montgomery County in Pennsylvania. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ104-082324- Eastern Montgomery- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for eastern Montgomery County in Pennsylvania. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ105-082324- Upper Bucks- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for upper Bucks County in Pennsylvania. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ106-082324- Lower Bucks- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for lower Bucks County in Pennsylvania. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ001-082324- Sussex- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Sussex 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...Friday through Wednesday. 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. NJZ007-082324- Warren- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Warren 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...Friday through Wednesday. 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. NJZ008-082324- Morris- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Morris 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...Friday through Wednesday. 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. NJZ009-082324- Hunterdon- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Hunterdon 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...Friday through Wednesday. 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. NJZ010-082324- Somerset- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Somerset 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...Friday through Wednesday. 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. NJZ012-082324- Middlesex- 0724 PM EDT Thu Sep 07 2023 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...Friday through Wednesday. 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. NJZ013-082324- Western Monmouth- 0724 PM EDT Thu Sep 07 2023 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ014-082324- Eastern Monmouth- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for eastern Monmouth County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ015-082324- Mercer- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Mercer 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...Friday through Wednesday. 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. NJZ016-082324- Salem- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Salem 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ017-082324- Gloucester- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Gloucester 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ018-082324- Camden- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Camden 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ019-082324- Northwestern Burlington- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for northwestern Burlington County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ020-082324- Ocean- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for inland portions of Ocean County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ021-082324- Cumberland- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Cumberland County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ022-082324- Atlantic- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for inland portions of Atlantic County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ023-082324- Cape May- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Cape May County excluding the Atlantic coast in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ024-082324- Atlantic Coastal Cape May- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for the Atlantic coastal portions of Cape May County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ025-082324- Coastal Atlantic- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for coastal portions of Atlantic County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ026-082324- Coastal Ocean- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for coastal portions of Ocean County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ027-082324- Southeastern Burlington- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for southeastern Burlington County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ012-082324- Kent MD- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Kent County in Maryland. .DAY ONE...Through tonight. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ015-082324- Queen Annes- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Queen Annes County in Maryland. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ019-082324- Talbot- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Talbot County in Maryland. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ020-082324- Caroline- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for Caroline County in Maryland. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ430-082324- Delaware Bay waters north of East Point NJ to Slaughter Beach DE- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for upper Delaware Bay. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ431-082324- Delaware Bay waters south of East Point NJ to Slaughter Beach DE- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for lower Delaware Bay. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ450-082324- Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Monmouth County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ451-082324- Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Ocean County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ452-082324- Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Atlantic County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ453-082324- Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Cape May County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ454-082324- Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to the mouth of Delaware Bay out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ455-082324- Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm- 0724 PM EDT Thu Sep 07 2023 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Sussex County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures.
Special Weather Statement
National Weather Service Mount Holly NJ
808 PM EDT Thu Sep 7 2023
DEZ001-PAZ060-061-070-101>103-105-080045-
New Castle DE-Upper Bucks PA-Lehigh PA-Western Montgomery PA-
Delaware PA-Western Chester PA-Eastern Chester PA-Berks PA-
808 PM EDT Thu Sep 7 2023
...Strong thunderstorms will impact portions of northwestern New
Castle, eastern Berks, central Lehigh, northwestern Montgomery, west
central Bucks, Chester and southwestern Delaware Counties through 845
PM EDT...
At 808 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Kutztown to near Cedarville to West Grove.
Movement was east at 40 mph.
HAZARD...Wind gusts up to 40 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Allentown, Wilmington, West Chester, Pottstown, Phoenixville,
Coatesville, Emmaus, Westtown, Downingtown, Kennett Square,
Birdsboro, Collegeville, Kutztown, Royersford, Fleetwood, Trappe,
East Greenville, West Grove, Topton and Schwenksville.
This includes the following highways...
Pennsylvania Turnpike between mile markers 302 and 325.
Northeast Extension between mile markers 38 and 61.
Interstate 95 in Delaware between mile markers 15 and 17.
Interstate 78 in Pennsylvania between mile markers 38 and 61.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
eastern and southeastern Pennsylvania.
&&
LAT...LON 4021 7581 4061 7587 4067 7544 4026 7538
4011 7542 4010 7546 4009 7543 3975 7552
3974 7593
TIME...MOT...LOC 0008Z 260DEG 33KT 4055 7580 4022 7575 3983 7585
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH
MPSPreliminary Local Storm Report
National Weather Service Mount Holly NJ
810 PM EDT Thu Sep 7 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0454 PM Tstm Wnd Gst Reading Regional Airpor 40.38N 75.97W
09/07/2023 M45 MPH Berks PA ASOS
KRDG measured gust.
&&
DeSilvaPreliminary Local Storm Report
National Weather Service Mount Holly NJ
811 PM EDT Thu Sep 7 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0530 PM Tstm Wnd Gst Lehigh Valley Internati 40.65N 75.44W
09/07/2023 M41 MPH Lehigh PA ASOS
KABE measured gust.
&&
DeSilvaPreliminary Local Storm Report
National Weather Service Mount Holly NJ
812 PM EDT Thu Sep 7 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0755 PM Tstm Wnd Gst 1 WSW Valley Twp 39.98N 75.87W
09/07/2023 M40 MPH Chester PA AWOS
KMQS measured gust.
&&
DeSilvaPreliminary Local Storm Report
National Weather Service Mount Holly NJ
820 PM EDT Thu Sep 7 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0527 PM Tstm Wnd Dmg 3 SSE South Heidelberg 40.26N 76.05W
09/07/2023 Berks PA Utility Company
Tree limbs down on wires on Vinemont Road.
Time estimated from radar.
&&
StaarmannSpecial Weather Statement
National Weather Service Mount Holly NJ
821 PM EDT Thu Sep 7 2023
MDZ015-019-020-080045-
Queen Anne's MD-Talbot MD-Caroline MD-
821 PM EDT Thu Sep 7 2023
...A strong thunderstorm will impact portions of Talbot, south
central Queen Anne's and southern Caroline Counties through 845 PM
EDT...
At 821 PM EDT, Doppler radar was tracking a strong thunderstorm near
Oxford, or near Easton, moving northeast at 35 mph.
HAZARD...Wind gusts up to 40 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Easton, Denton, Trappe, St. Michaels, Oxford, Queen Anne, Tanyard,
Harmony, Skipton, Copperville, Matthews, Wye Mills, Hambleton,
Griffin, Cordova and Hillsboro.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3882 7624 3879 7622 3879 7619 3888 7620
3901 7612 3885 7577 3862 7611 3869 7618
3867 7620 3868 7621 3871 7622 3870 7623
3871 7623 3876 7622 3876 7625 3871 7627
3873 7630
TIME...MOT...LOC 0021Z 219DEG 30KT 3873 7616
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH
MPSThe Dover AFB radar (KDOX), 61 km away, was scanning. The volume nearest the first event began at 00:22 UTC.
1 thunderstorm wind. Local standard time, as filed.
County emergency management reports trees and wires down across Unionville. Time estimated via radar.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2023Every state in 2023This day in weather historyWarnings in Maryland, September 2023
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: 1140467.