Thunderstorms produced locally heavy rain in Bucks County during the late afternoon and early evening of September 8. Rainfall totals were as high as 2 to 3 inches.
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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.
Thunderstorms produced locally heavy rain in Bucks County during the late afternoon and early evening of September 8. Rainfall totals were as high as 2 to 3 inches.
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 8, 3:30 PM EST, 1 hour 30 minutes earlier.
Area Forecast Discussion National Weather Service Mount Holly NJ 430 PM EDT Fri Sep 8 2023 .SYNOPSIS... A weak cold front will become nearly stationary across eastern Pennsylvania tonight. The cold front is then forecast to slowly shift eastward over the weekend before finally moving offshore during early next week. Another cold front looks to arrive later Wednesday into Thursday. && .NEAR TERM /THROUGH SATURDAY/... While we will gradually cool down slightly with increasing clouds heading into the weekend, we are in a relatively stagnant pattern with strong high pressure ridging just off the East Coast, while a mid and upper trough tries to push in from the west. Short wave energy traveling northward in the mid level flow along the periphery of the offshore ridge will continue to aid in the development of strong to severe showers and thunderstorms through this evening. While the overall synoptic setup across the Northeast and Mid- Atlantic is fairly similar to yesterday, and the Storm Prediction Center has expanded the 'Slight Risk' of severe thunderstorms southeastward across the I-95 corridor, there are some notable differences in the forcing mechanisms and thermodynamic setup. A surface front draped down the Appalachians has actually started to drift close to our northwestern zones, with notably cooler conditions there compared to yesterday. Temperatures around midday are running 6-10 degrees lower there than midday on Thursday, and 2 to 5 degrees lower across the rest of our region. However, We still have a very humid airmass in place with dewpoints into the 70s, highest south and east of the Fall Line, and that is contributing to CAPE of 2500-4000 j/kg there. There is still some decent deep layer shear around 15-25 kt, highest over our northwest zones, and not exactly co- located with the higher CAPE like we had in place there yesterday. Mid- level winds are somewhat weaker, owing in part to a weaker shortwave passing by and ridging to our east actually trying to build back slightly toward the coast. Still, despite the weaker forcing today, enough low-level convergence along the sea breeze from DE to NJ allowed severe convection to initiate and grow rapidly. Some more isolated storms are trying to develop farther west toward I-95 and into parts of southeast PA along outflow boundaries, but this activity is not looking as strong yet. This evening, CAMs suggest that this ongoing activity will tend to diminish while lifting northward as we lose daytime heating. Meanwhile, larger scale forcing from shortwaves lifting northward along the western edge of our region will trigger more numerous showers and thunderstorms over similar northwestern portions of our region that saw activity Thursday evening, moving in from Berks County to the Lehigh Valley around 7 or 8 PM and then gradually progressing toward I-95 tonight, while weakening. With lower CAPE with that activity expected into our northwest zones, the storms may not be as strong as yesterday, but will still bear watching for a damaging wind threat. Some storms along the sea breeze have been training and resulting in a localized heavy rain and flash-flooding threat, but expect that this will be less of a hazard this evening. Otherwise some isolated showers and thunderstorms may linger later tonight, but will diminish in coverage and intensity. Areas of fog are possible, especially at locations that receive rainfall, with a cloudier start to the day on Saturday for most of our region. On Saturday, the risk for severe weather looks much more 'marginal', given more clouds to start, lower temperatures with highs mainly in the 80s, and less instability. Still, given a very moist airmass remaining in place with dewpoints in the 70s, high precipitable water values, and perhaps just 'enough' shear, if we see some clearing in the afternoon, there will be a threat for at least isolated strong to severe storms. It is possible that we see a somewhat similar scenario to today, with some storms firing just inland from the shore along the sea breeze, then lifting northward, but perhaps less intensity and coverage that what we are seeing on Friday. && .SHORT TERM /SATURDAY NIGHT THROUGH MONDAY/... Temperatures continuing to trend downward however it will remain humid, with at least some convection around especially in the afternoon and evening on Sunday. As we go through Sunday, the axis of a gradually weakening upper- level trough is forecast to arrive. 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 arriving, some increase in convective development should occur especially in the afternoon and early evening hours. While there will be cooler temperatures (highs in the low to mid 80s), it will remain humid as PWATs likely remain in the 1.5 to 2 inch range. However, the instability will be held down some (closer to 1500 J/kg) which should mostly keep the thunderstorms intensity in check. Locally very heavy rain will be probable once again with the high precipitable water values and potentially slower storm motions. As of now, the majority of the area is in a MARGINAL risk for excessive rainfall leading to flash flooding. Convection should begin to decrease in intensity and coverage as we head into the overnight hours Sunday night. Scattered showers and storms will likely persist through the night though, particularly for areas near and northwest of the I-95 urban corridor. Low temperatures are forecast to be in the upper 60s to near 70 degrees. && .LONG TERM /MONDAY NIGHT THROUGH FRIDAY/... Summary...Cooler temperatures however a slow return to lower dew points. A continuation for some possible showers and thunderstorms at times. Synoptic Overview...The axis of an upper-level trough is forecast to work across our area during Monday as it weakens. A much stronger upper-level trough is forecast to move across the Great Lakes region and adjacent Canada during the first half of next 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 is forecast to finally get pushed offshore Monday. The next cold front looks to arrive later Wednesday into Thursday. For Monday...The axis of a gradually weakening upper-level trough is forecast to cross our region. This will take a weak cold front offshore. Given some cooling aloft and some forcing for ascent with the weakening trough aloft, some convective development should occur especially in the afternoon and early evening hours. While there will be cooler temperatures it will remain humid, however the instability will be held down some which should 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 Friday...Some drier air should work in during Tuesday in the wake of the weak cold front, however there is no significant push of drier low-level air and therefore a humid air mass should still be in place. This may provide a window for no convective chances though, 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 into 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. While it remains humid for a while, the dew points should lower some during peak heating each day, although a more notable drop looks to occur late in the week. We continue to monitor the track forecast for Hurricane Lee. The exact track remains uncertain especially tied to when it makes a northward turn. Therefore it is way to soon to get specific on any possible direct impacts. However, large swells and the development of dangerous rip currents into our area will become more likely during next week. && .AVIATION /19Z FRIDAY THROUGH WEDNESDAY/... The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas. Rest of Today through 03Z...Scattered showers and thunderstorms. VFR conditions outside of storms, but brief MVFR/IFR conditions, especially VSBY-wise, in thunderstorms. Activity more focused around Delaware and NJ this afternoon, then another batch approaching from the west into eastern Pennsylvania early this evening before possibly reaching I-95 later in the evening, while weakening. Wind favoring the southwest and south 5 to 10 knots, but gusty and erratic near thunderstorms. Medium confidence. Tonight...A chance of showers and thunderstorms, diminishing in coverage after midnight. Some low clouds and fog are possible toward morning, reducing conditions to MVFR or IFR; lowest conditions north and west of I-95 and right along the coast. Variable wind 5 knots or less. Medium confidence. Saturday...A chance of showers and thunderstorms once again in the afternoon and evening. MVFR to localized IFR ceilings giving way to VFR conditions by mid-morning, then MVFR to brief IFR conditions possible with any thunderstorms. Winds remaining mainly light southerly, but gusty and erratic around any thunderstorms. Outlook... Sunday...Periods of sub-VFR conditions probable along some showers and thunderstorms. Greatest chance for showers and thunderstorms is in the afternoon and evening. Southerly winds 5-10 knots decreasing to 5 knots or less. 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, mainly in the afternoon to evening. Northerly winds around 5 to 10 kts become southeasterly in the afternoon. Low confidence. Wednesday...Sub-VFR conditions possible with showers and thunderstorms. Southerly winds around 5 to 10 kts. Low confidence. && .MARINE... A southerly wind 10 to 15 knots today is forecast to decrease to 5 to 10 knots late tonight, then pick up again around 10 kt from the south once again on Saturday. Waves on our ocean waters are expected to be 2 to 3 feet, with waves on Delaware Bay at 2 feet or less. The exception to all this today has been with some thunderstorms mainly around Delaware Bay, with locally strong winds and rough seas, but am not expecting any additional thunderstorms over our marine zones through tonight aside from a very isolated weaker shower or two. Areas around DE Bay may have to keep an eye to the sky on Saturday afternoon as well, but storms should tend to stay inland from the ocean areas once again. Outlook... Sunday 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 around 10 kts. Seas 2 to 4 ft. Tuesday...Small Craft Advisory conditions unlikely. Seas begin to build and may begin to approach 5 feet on Tuesday night. Otherwise, southeasterly winds around 10 knots. Wednesday...Small Craft Advisory conditions possible. Seas may continue to build and become around 5 feet on Tuesday. Otherwise, southerly winds around 10 knots. Rip Currents... A southerly wind 10 to 15 MPH is expected for today along the coasts of Delaware and New Jersey. Breaking waves are forecast to be 1 to 2 feet with an underlying long period easterly swell (around 11 or 12 seconds). There is a LOW risk of rip currents for today. A southerly wind around 10 MPH is anticipated for Saturday with breaking waves of 1 to 2 feet. An underlying long period easterly swell (around 10 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 for Saturday. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...None. NJ...None. DE...None. MD...None. MARINE...None. && SYNOPSIS...Gorse NEAR TERM...Dodd SHORT TERM...AKL/Gorse LONG TERM...AKL/Gorse AVIATION...AKL/Dodd MARINE...AKL/Dodd
Hazardous Weather Outlook National Weather Service Mount Holly NJ 0437 PM EDT Fri Sep 08 2023 DEZ001-092037- New Castle- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for New Castle County in Delaware. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ002-092037- Kent- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Kent County in Delaware. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ003-092037- Inland Sussex- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ004-092037- Delaware Beaches- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ054-092037- Carbon- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Carbon County in Pennsylvania. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ055-092037- Monroe- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Monroe County in Pennsylvania. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ060-092037- Berks- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Berks County in Pennsylvania. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ061-092037- Lehigh- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Lehigh County in Pennsylvania. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ062-092037- Northampton- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Northampton County in Pennsylvania. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ070-092037- Delaware- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Delaware County in Pennsylvania. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ071-092037- Philadelphia- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Philadelphia County in Pennsylvania. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ101-092037- Western Chester- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for western Chester County in Pennsylvania. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ102-092037- Eastern Chester- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for eastern Chester County in Pennsylvania. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ103-092037- Western Montgomery- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for western Montgomery County in Pennsylvania. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ104-092037- Eastern Montgomery- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for eastern Montgomery County in Pennsylvania. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ105-092037- Upper Bucks- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for upper Bucks County in Pennsylvania. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ106-092037- Lower Bucks- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for lower Bucks County in Pennsylvania. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ001-092037- Sussex- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Sussex County in New Jersey. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ007-092037- Warren- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Warren County in New Jersey. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ008-092037- Morris- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Morris County in New Jersey. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ009-092037- Hunterdon- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Hunterdon County in New Jersey. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ010-092037- Somerset- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Somerset County in New Jersey. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ012-092037- Middlesex- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Middlesex County in New Jersey. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ013-092037- Western Monmouth- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for western Monmouth County in New Jersey. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ014-092037- Eastern Monmouth- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ015-092037- Mercer- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Mercer County in New Jersey. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ016-092037- Salem- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Salem County in New Jersey. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ017-092037- Gloucester- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Gloucester County in New Jersey. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ018-092037- Camden- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Camden County in New Jersey. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ019-092037- Northwestern Burlington- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for northwestern Burlington County in New Jersey. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ020-092037- Ocean- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ021-092037- Cumberland- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ022-092037- Atlantic- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ023-092037- Cape May- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ024-092037- Atlantic Coastal Cape May- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ025-092037- Coastal Atlantic- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ026-092037- Coastal Ocean- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ027-092037- Southeastern Burlington- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ012-092037- Kent MD- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Kent County in Maryland. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ015-092037- Queen Annes- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Queen Annes County in Maryland. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ019-092037- Talbot- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Talbot County in Maryland. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ020-092037- Caroline- 0437 PM EDT Fri Sep 08 2023 This Hazardous Weather Outlook is for Caroline County in Maryland. .DAY ONE...Through tonight. Scattered severe thunderstorms are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ430-092037- Delaware Bay waters north of East Point NJ to Slaughter Beach DE- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ431-092037- Delaware Bay waters south of East Point NJ to Slaughter Beach DE- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ450-092037- Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ451-092037- Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ452-092037- Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ453-092037- Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ454-092037- Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ455-092037- Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm- 0437 PM EDT Fri Sep 08 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...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures.
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
517 PM EDT Fri Sep 8 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0457 PM Hail 1 ENE Fountainville 40.35N 75.13W
09/08/2023 E1.00 inch Bucks PA Public
Quarter sized hail fell in Danboro around
4:30 PM and again 4:57 PM.
&&
StaarmannPreliminary Local Storm Report
National Weather Service Mount Holly NJ
520 PM EDT Fri Sep 8 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0505 PM Hail Pipersville 40.43N 75.14W
09/08/2023 E1.00 inch Bucks PA Public
Report on social media of quarter-sized
hail.
&&
CWSpecial Weather Statement
National Weather Service Mount Holly NJ
529 PM EDT Fri Sep 8 2023
PAZ103-082200-
Western Montgomery PA-
529 PM EDT Fri Sep 8 2023
...A strong thunderstorm will impact portions of northwestern
Montgomery County through 600 PM EDT...
At 529 PM EDT, Doppler radar was tracking a strong thunderstorm near
Gilbertsville, or 20 miles east of Reading. This storm was nearly
stationary.
HAZARD...Wind gusts up to 40 mph and half inch 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...
Pottstown, East Greenville, Schwenksville, Green Lane, Spring Mount,
Gilbertsville, Pennsburg, Red Hill, Sanatoga, Pottsgrove and Halfway
House.
This includes Northeast Extension between mile markers 35 and 38.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
southeastern Pennsylvania.
&&
LAT...LON 4044 7553 4033 7535 4020 7555 4026 7564
TIME...MOT...LOC 2129Z 222DEG 3KT 4028 7555
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
StaarmannPreliminary Local Storm Report
National Weather Service Mount Holly NJ
546 PM EDT Fri Sep 8 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0338 PM Tstm Wnd Dmg East Hanover 40.83N 74.36W
09/08/2023 Morris NJ Public
Report of extensive tree damage and downed
trees across East Hanover on social media.
Time estimated with radar.
&&
CWPreliminary Local Storm Report
National Weather Service Mount Holly NJ
556 PM EDT Fri Sep 8 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0501 PM Hail Long Valley 40.78N 74.77W
09/08/2023 E0.75 inch Morris NJ Public
Report on social media of penny-sized hail.
&&
CWSpecial Weather Statement
National Weather Service Mount Holly NJ
600 PM EDT Fri Sep 8 2023
NJZ009-015-PAZ106-082230-
Hunterdon NJ-Mercer NJ-Lower Bucks PA-
600 PM EDT Fri Sep 8 2023
...A strong thunderstorm will impact portions of south central
Hunterdon, west central Mercer and central Bucks Counties through 630
PM EDT...
At 600 PM EDT, Doppler radar was tracking a strong thunderstorm near
Ivyland, or 15 miles west of Trenton, moving northeast at 20 mph.
HAZARD...Wind gusts up to 40 mph and half inch 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...
Doylestown, New Hope, Ivyland, Stockton, Richboro, Washington
Crossing, Lumberville, Lambertville, Newtown Grant and Churchville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
central and northwestern New Jersey...and southeastern Pennsylvania.
&&
LAT...LON 4018 7505 4025 7516 4044 7502 4032 7481
TIME...MOT...LOC 2200Z 216DEG 18KT 4025 7505
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
StaarmannThe Philadelphia radar (KDIX), 79 km away, was scanning. The volume nearest the first event began at 22:02 UTC.
3 flash flood. Local standard time, as filed.
Widespread roadway flooding in Plumstead Township with some road closures.
Widespread roadway flooding in Doylestown with some road closures.
Widespread roadway flooding in Buckingham Township with some road closures.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2023Every state in 2023This day in weather historyWarnings in Pennsylvania, 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: 1124897, 1124903, 1124910.