A persistent onshore flow and unusually high astronomical tides associated with the new moon resulted in widespread moderate coastal flooding along the tidal Delaware River and its tidal tributaries during the early hours of September 10.
Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 persistent onshore flow and unusually high astronomical tides associated with the new moon resulted in widespread moderate coastal flooding along the tidal Delaware River and its tidal tributaries during the early hours of September 10.
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 9, 8:47 PM EST, 3 hours 13 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service Mount Holly NJ 333 PM EDT Sun Sep 9 2018 NJZ001-007>010-PAZ054-055-060>062-101>105-101945- Sussex-Warren-Morris-Hunterdon-Somerset-Carbon-Monroe-Berks-Lehigh- Northampton-Western Chester-Eastern Chester-Western Montgomery- Eastern Montgomery-Upper Bucks- 333 PM EDT Sun Sep 9 2018 ...FLOOD WATCH IN EFFECT THROUGH LATE MONDAY NIGHT... This Hazardous Weather Outlook is for northern New Jersey, northwest New Jersey, east central Pennsylvania, northeast Pennsylvania and southeast Pennsylvania. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. The latest track from NHC continues to bring Florence into the western mid-Atlantic (inside 75W) Wednesday night. That said, the risk for impacts along the east coast continue to increase. However, the uncertainty with the model guidance this far out still makes it difficult to determine the exact location, magnitude, and timing of these impacts our region will have, if any. Continue to monitor the forecasts from the NHC on the track of Florence and think of possible preparations in case our area does have an impact from the storm. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ015-017>019-PAZ070-071-106-101945- Mercer-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Lower Bucks- 333 PM EDT Sun Sep 9 2018 ...FLOOD WATCH IN EFFECT THROUGH LATE MONDAY NIGHT... ...COASTAL FLOOD WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 PM EDT MONDAY... This Hazardous Weather Outlook is for central New Jersey, southern New Jersey and southeast Pennsylvania. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Coastal Flood Warning. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Coastal Flood Warning. The latest track from NHC continues to bring Florence into the western mid-Atlantic (inside 75W) Wednesday night. That said, the risk for impacts along the east coast continue to increase. However, the uncertainty with the model guidance this far out still makes it difficult to determine the exact location, magnitude, and timing of these impacts our region will have, if any. Continue to monitor the forecasts from the NHC on the track of Florence and think of possible preparations in case our area does have an impact from the storm. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ012-015-019-020-101945- Kent MD-Queen Annes-Talbot-Caroline- 333 PM EDT Sun Sep 9 2018 This Hazardous Weather Outlook is for northeast Maryland. .DAY ONE...This Afternoon and Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Monday through Saturday. The latest track from NHC continues to bring Florence into the western mid-Atlantic (inside 75W) Wednesday night. That said, the risk for impacts along the east coast continue to increase. However, the uncertainty with the model guidance this far out still makes it difficult to determine the exact location, magnitude, and timing of these impacts our region will have, if any. Continue to monitor the forecasts from the NHC on the track of Florence and think of possible preparations in case our area does have an impact from the storm. Depending on Florence's track, Tropical Storm Force conditions could be mentioned in our forecasts late in the week. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ008-101945- Cecil- 333 PM EDT Sun Sep 9 2018 ...FLOOD WATCH IN EFFECT THROUGH LATE MONDAY NIGHT... This Hazardous Weather Outlook is for northeast Maryland. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. The latest track from NHC continues to bring Florence into the western mid-Atlantic (inside 75W) Wednesday night. That said, the risk for impacts along the east coast continue to increase. However, the uncertainty with the model guidance this far out still makes it difficult to determine the exact location, magnitude, and timing of these impacts our region will have, if any. Continue to monitor the forecasts from the NHC on the track of Florence and think of possible preparations in case our area does have an impact from the storm. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ001-NJZ016-101945- New Castle-Salem- 333 PM EDT Sun Sep 9 2018 ...FLOOD WATCH IN EFFECT THROUGH LATE MONDAY NIGHT... ...COASTAL FLOOD WARNING IN EFFECT FROM 9 PM THIS EVENING TO 3 PM EDT MONDAY... This Hazardous Weather Outlook is for northern Delaware and southern New Jersey. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Coastal Flood Warning. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Coastal Flood Warning. The latest track from NHC continues to bring Florence into the western mid-Atlantic (inside 75W) Wednesday night. That said, the risk for impacts along the east coast continue to increase. However, the uncertainty with the model guidance this far out still makes it difficult to determine the exact location, magnitude, and timing of these impacts our region will have, if any. Continue to monitor the forecasts from the NHC on the track of Florence and think of possible preparations in case our area does have an impact from the storm. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ012-013-020>022-027-101945- Middlesex-Western Monmouth-Ocean-Cumberland-Atlantic- Southeastern Burlington- 333 PM EDT Sun Sep 9 2018 ...FLOOD WATCH IN EFFECT THROUGH LATE MONDAY NIGHT... ...COASTAL FLOOD WARNING IN EFFECT UNTIL 2 PM EDT MONDAY... This Hazardous Weather Outlook is for central New Jersey, northern New Jersey and southern New Jersey. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Coastal Flood Warning. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Coastal Flood Warning. The latest track from NHC continues to bring Florence into the western mid-Atlantic (inside 75W) Wednesday night. That said, the risk for impacts along the east coast continue to increase. However, the uncertainty with the model guidance this far out still makes it difficult to determine the exact location, magnitude, and timing of these impacts our region will have, if any. Continue to monitor the forecasts from the NHC on the track of Florence and think of possible preparations in case our area does have an impact from the storm. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ002-003-NJZ023-101945- Kent-Inland Sussex-Cape May- 333 PM EDT Sun Sep 9 2018 ...COASTAL FLOOD WARNING IN EFFECT UNTIL 2 PM EDT MONDAY... This Hazardous Weather Outlook is for central Delaware, southern Delaware and southern New Jersey. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Coastal Flood Warning. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Coastal Flood Warning. The latest track from NHC continues to bring Florence into the western mid-Atlantic (inside 75W) Wednesday night. That said, the risk for impacts along the east coast continue to increase. However, the uncertainty with the model guidance this far out still makes it difficult to determine the exact location, magnitude, and timing of these impacts our region will have, if any. Continue to monitor the forecasts from the NHC on the track of Florence and think of possible preparations in case our area does have an impact from the storm. Depending on Florence's track, Tropical Storm Force conditions could be mentioned in our forecasts late in the week. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ014-026-101945- Eastern Monmouth-Coastal Ocean- 333 PM EDT Sun Sep 9 2018 ...HIGH SURF ADVISORY IN EFFECT UNTIL 8 AM EDT MONDAY... ...FLOOD WATCH IN EFFECT THROUGH LATE MONDAY NIGHT... ...HIGH RIP CURRENT RISK IN EFFECT UNTIL 6 PM EDT THIS EVENING... ...COASTAL FLOOD WARNING IN EFFECT UNTIL 2 PM EDT MONDAY... ...HIGH RIP CURRENT RISK IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING... This Hazardous Weather Outlook is for central New Jersey and southern New Jersey. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. High Rip Current Risk. Flood Watch. High Surf Advisory. Coastal Flood Warning. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. High Surf Advisory. Coastal Flood Warning. High Rip Current Risk. The latest track from NHC continues to bring Florence into the western mid-Atlantic (inside 75W) Wednesday night. That said, the risk for impacts along the east coast continue to increase. However, the uncertainty with the model guidance this far out still makes it difficult to determine the exact location, magnitude, and timing of these impacts our region will have, if any. Continue to monitor the forecasts from the NHC on the track of Florence and think of possible preparations in case our area does have an impact from the storm. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ004-NJZ024-025-101945- Delaware Beaches-Atlantic Coastal Cape May-Coastal Atlantic- 333 PM EDT Sun Sep 9 2018 ...HIGH SURF ADVISORY IN EFFECT UNTIL 8 AM EDT MONDAY... ...HIGH RIP CURRENT RISK IN EFFECT UNTIL 6 PM EDT THIS EVENING... ...COASTAL FLOOD WARNING IN EFFECT UNTIL 2 PM EDT MONDAY... ...HIGH RIP CURRENT RISK IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING... This Hazardous Weather Outlook is for southern Delaware and southern New Jersey. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. High Rip Current Risk. High Surf Advisory. Coastal Flood Warning. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. High Surf Advisory. Coastal Flood Warning. High Rip Current Risk. The latest track from NHC continues to bring Florence into the western mid-Atlantic (inside 75W) Wednesday night. That said, the risk for impacts along the east coast continue to increase. However, the uncertainty with the model guidance this far out still makes it difficult to determine the exact location, magnitude, and timing of these impacts our region will have, if any. Continue to monitor the forecasts from the NHC on the track of Florence and think of possible preparations in case our area does have an impact from the storm. Depending on Florence's track, Tropical Storm Force conditions could be mentioned in our forecasts late in the week. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ452>455-101945- 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- 333 PM EDT Sun Sep 9 2018 ...GALE WARNING IN EFFECT UNTIL 11 AM EDT MONDAY... This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. The latest track from NHC continues to bring Florence into the western mid-Atlantic (inside 75W) Wednesday night. That said, the risk for impacts along the east coast continue to increase. However, the uncertainty with the model guidance this far out still makes it difficult to determine the exact location, magnitude, and timing of these impacts our region will have, if any. Continue to monitor the forecasts from the NHC on the track of Florence and think of possible preparations in case our area does have an impact from the storm. Depending on Florence's track, Tropical Storm Force conditions could be mentioned in our forecasts late in the week. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ450-451-101945- 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- 333 PM EDT Sun Sep 9 2018 ...GALE WARNING IN EFFECT UNTIL 1 PM EDT MONDAY... This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. The latest track from NHC continues to bring Florence into the western mid-Atlantic (inside 75W) Wednesday night. That said, the risk for impacts along the east coast continue to increase. However, the uncertainty with the model guidance this far out still makes it difficult to determine the exact location, magnitude, and timing of these impacts our region will have, if any. Continue to monitor the forecasts from the NHC on the track of Florence and think of possible preparations in case our area does have an impact from the storm. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ430-431-101945- Delaware Bay waters north of East Point NJ to Slaughter Beach DE- Delaware Bay waters south of East Point NJ to Slaughter Beach DE- 333 PM EDT Sun Sep 9 2018 ...GALE WARNING IN EFFECT UNTIL 8 AM EDT MONDAY... This Hazardous Weather Outlook is for Delaware Bay Waters. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. The latest track from NHC continues to bring Florence into the western mid-Atlantic (inside 75W) Wednesday night. That said, the risk for impacts along the east coast continue to increase. However, the uncertainty with the model guidance this far out still makes it difficult to determine the exact location, magnitude, and timing of these impacts our region will have, if any. Continue to monitor the forecasts from the NHC on the track of Florence and think of possible preparations in case our area does have an impact from the storm. Depending on Florence's track, Tropical Storm Force conditions could be mentioned in our forecasts late in the week. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures.
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</html>The national radar mosaic for the moment the first event began.
3 coastal flood. Local standard time, as filed.
Moderate flooding occurred along the Delaware River and its tidal tributaries in Philadelphia County. The tide gauge at Philadelphia reached 9.65 feet MLLW.
Moderate flooding occurred along the Delaware River and its tidal tributaries in Delaware County. The tide gauge at Philadelphia reached 9.65 feet MLLW.
Moderate flooding occurred along the Delaware River and its tidal tributaries in lower Bucks County. The tide gauge at Burlington, New Jersey reached 10.62 feet MLLW.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2018Every state in 2018This day in weather historyWarnings in Pennsylvania, September 2018
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 2026-10-01. Each event’s entry at NCEI: 775261, 775262, 775260.