Ten rescues and one injury occurred due to rip currents.
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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.
Ten rescues and one injury occurred due to rip currents.
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 Aug 13, 2:16 PM EST, 3 hours 44 minutes earlier.
Area Forecast Discussion National Weather Service Mount Holly NJ 316 PM EDT Sun Aug 13 2017 .SYNOPSIS... High pressure centered over Lake Erie this afternoon will build to the east and it should influence our weather into Monday. A weak disturbance in the upper atmosphere approaching from the southwest is forecast to pass over our region on Monday evening. A tropical system is expected to pass well to our southeast and south on Tuesday and Tuesday night. A frontal boundary is anticipated to arrive from the north during the mid week period and it should meander near or over our region into the weekend. && .NEAR TERM /UNTIL 6 AM MONDAY MORNING/... High pressure over the Great Lakes region will into the area through tonight. Meanwhile, the cold front that moved through the forecast area last night will stall to our south across the Carolinas and southeastern VA. Overnight low temperatures in the 50s are attainable in the typical sheltered valleys of northeastern PA and northwestern NJ where the boundary layer is fully expected to decouple. Farther south and east across the area, the floor for temperatures will be in the low to mid 60s based on current and projected dewpoints. However, a light northerly breeze may persist tonight with the center of the high passing to our north while some mid and hi-level clouds spread northward over the Delmarva region. This would limit radiational cooling a bit and potentially keep some spots in the urban I-95 corridor and coastal plain slightly warmer. && .SHORT TERM /6 AM MONDAY MORNING THROUGH 6 PM MONDAY/... High pressure will move off the New England coast and weaken on Monday. Southerly return flow develops over the region around the backside of the surface high and ahead of an upstream shortwave trough over the Mid South/Ohio Valley. This will cause the stalled frontal boundary to our south to return back northward. However, with the steering flow rather weak, the northward movement of the frontal boundary should be gradual. Recent guidance has trended weaker/slower with the development of a wave of low pressure along the front. Models consensus has been to keep the warm front and more organized band of convection generally south and west of the area tomorrow. However, the 12Z NAM, 12Z ECMWF and about a quarter of both the 09Z SREF and 00Z NCAR CAM ensemble members still bring showers into our far southern (mid Delmarva) and western (southeast PA) late in the afternoon. The 12Z 3 km NAM Nest is even more aggressive with the development of afternoon showers across much of the CWA. This latter solution may be a bit overdone with the bulk of the synoptic lift expected to remain upstream of the region. Following model trends and consensus, PoPs were lowered near the coast but raised for western (especially southwestern) zones during the mid to late afternoon hours. PoPs were capped in the 20-30 percent range with the expectation that coverage of showers should be rather sparse. Forecast soundings from all available guidance reveal a relatively stable environment that is not supportive of thunderstorms (which makes sense with the region located in the cool sector north of the front and with increasing clouds helping to limit the degree of boundary layer destabilization). Trended cloudier than previous forecasts for Monday as model x- sections show a deepening saturated layer (wrt/ ice) in the 700-400 mb layer. This pattern would indicate a rapid increase in mid and hi clouds from SW to NE during the late morning and afternoon. Owing to the cloud cover, weighted temperatures more toward the cooler MET. Forecast highs are generally in the low to mid 80s (slightly cooler in the Poconos and along the coast). && .LONG TERM /MONDAY NIGHT THROUGH SUNDAY/... A mid level disturbance is forecast to be overhead on Monday evening before moving off the coast on Monday night. The models are trending wetter for Monday night, so we will include at least a slight chance for showers and thunderstorms at that time. However, the NAM continues to appear quite overdone with the rainfall amounts. Of course, you cannot go wrong forecasting rain for central and southern Delaware and the adjacent counties of eastern Maryland. It appears as though the tropical system over the western North Atlantic will stay well enough to our southeast and east on Tuesday and Tuesday night as not to impact our weather. However, a mid level short wave trough is forecast to approach from the Great Lakes on Tuesday before passing overhead on Tuesday night. We will include a chance of showers and thunderstorms for Tuesday afternoon and evening, mainly in eastern Pennsylvania and northern New Jersey. The mid level short wave is anticipated to pull a frontal boundary into our region from the north on Tuesday night. The boundary is expected to remain over or near eastern Pennsylvania, northeastern Maryland, Delaware and New Jersey for the balance of the week into the weekend. The model guidance differs in handling weak waves of low pressure travailing along the front, so the timing of any precipitation in the forecast remains difficult. Regardless, it seems as though the period from Thursday into Saturday will be rather unsettled with a chance of showers and thunderstorms each day. High temperatures are forecast to favor the 80s during the period from Tuesday through Sunday with lows generally in the 60s and lower 70s. && .AVIATION /19Z SUNDAY THROUGH FRIDAY/... The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas. Predominately VFR through the valid TAF period. A low probability scenario would be for a brief period of MVFR visibilities just before sunrise Monday at one of the more fog- prone TAF sites such as MIV, ACY, ABE, RDG. There is a slight chance of showers Monday afternoon, mainly south and west of PHL. These showers should be light enough to affect visibility much. NW winds 6-12 kt this afternoon, becoming 5 kt or less this evening. A wind shift from the N and eventually the NE is expected to occur tonight, then E during the morning and SE by the afternoon. OUTLOOK... Monday night and Tuesday...Mainly VFR. Late night and early morning low clouds and visibility restrictions are possible. A chance or slight chance of showers and thunderstorms. Tuesday night through Wednesday night...Mainly VFR. Late night and early morning low clouds and visibility restrictions are possible. Thursday through Friday...Mainly VFR with a chance of showers and thunderstorms. Late night and early morning low clouds and visibility restrictions are possible. && .MARINE... No marine hazards expected tonight and Monday. NW winds are between 5-10 kt as of 3 PM. Expect winds off the NJ coast to become southerly late this afternoon and this evening as a sea-breeze develops but struggles to move inland. Light and variable winds overnight, becoming E 5-10 kt during the morning and eventually SE during the afternoon. Seas in our coastal waters are generally in the 3-4 ft range this afternoon and less than 2 ft in the Delaware Bay. Wave heights are not forecast to change much through Monday, maybe decreasing by a foot. OUTLOOK... Monday night through Friday...No marine headlines are anticipated. RIP CURRENTS... There is generally a low risk for the development of dangerous rip currents at the NJ and DE beaches through this evening under the influence of a light offshore wind. However, local effects could elevate the risk to near moderate as waves in the surf zone are choppy (3-4 ft, isolated 5 ft). The medium-period (6-8 seconds) S-SEly swell and a 3-4 ft surf that we are experiencing today looks to continue into Monday. Wind speeds will be similar tomorrow as well. However, the wind direction changes to Ely during the morning and SEly by afternoon. This onshore component to the flow may be enough to warrant a moderate risk for Monday, especially at Jersey shore. A tropical system is forecast to pass well to our southeast and east on Tuesday and Tuesday night. Swells from the system will likely bring at least a moderate risk for the development of dangerous rip currents from Monday night through Tuesday night. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...None. NJ...None. DE...None. MD...None. MARINE...None. && Synopsis...Iovino Near Term...Klein Short Term...Klein Long Term...Iovino Aviation...Iovino/Klein Marine...Iovino/Klein
Hazardous Weather Outlook National Weather Service Mount Holly NJ 320 PM EDT Sun Aug 13 2017 DEZ001>003-MDZ008-012-015-019-020-NJZ001-007>010-012-013-015>023-027- PAZ054-055-060>062-070-071-101>106-141930- New Castle-Kent-Inland Sussex-Cecil-Kent MD-Queen Annes-Talbot- Caroline-Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May- Southeastern Burlington-Carbon-Monroe-Berks-Lehigh-Northampton- Delaware-Philadelphia-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- 320 PM EDT Sun Aug 13 2017 This Hazardous Weather Outlook is for central Delaware, northern Delaware, southern Delaware, northeast Maryland, 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. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. DEZ004-NJZ014-024>026-141930- Delaware Beaches-Eastern Monmouth-Atlantic Coastal Cape May- Coastal Atlantic-Coastal Ocean- 320 PM EDT Sun Aug 13 2017 This Hazardous Weather Outlook is for southern Delaware, central New Jersey and southern New Jersey. .DAY ONE...This Afternoon and Tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. A moderate risk for the development of dangerous rip currents is possible on Monday and Tuesday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. ANZ430-431-450>455-141930- Delaware Bay waters north of East Point NJ to Slaughter Beach DE- Delaware Bay waters south of East Point NJ to Slaughter Beach DE- Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm- Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm- Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm- Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm- Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm- Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm- 320 PM EDT Sun Aug 13 2017 This Hazardous Weather Outlook is for Atlantic coastal waters and Delaware Bay Waters. .DAY ONE...This Afternoon and Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The national radar mosaic for the moment the first event began.
1 rip current. Local standard time, as filed.
Ten rescues and an injury occurred due to rip currents.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New Jersey in 2017Every state in 2017This day in weather historyWarnings in New Jersey, August 2017
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: 709155.