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National Weather ServiceNew JerseyFlash Flood WarningArchive to October 11, 2026

Flash Flood Warnings in New Jersey

The National Weather Service issued 62 flash flood warnings for New Jersey in 2025 and 46 a year on average in 2008-2025; in 2021-2025 it had the 27th most of any state. 2026 through September: 138, 209% above the average of 45 for those months in 2008-2025. Burlington was covered most often (190 times since 2008).

How many flash flood warnings does New Jersey get?

62 flash flood warnings for New Jersey in 2025
501001502008: 3720082009: 4120092010: 920102011: 4420112012: 3820122013: 5320132014: 4620142015: 3420152016: 3020162017: 2520172018: 7920182019: 6020192020: 4520202021: 8520212022: 2720222023: 6420232024: 4720242025: 6220252026: 13820262008-2025 average 462026 through September: 138501001502008: 3720082009: 412010: 920102011: 442012: 3820122013: 532014: 4620142015: 342016: 3020162017: 252018: 7920182019: 602020: 4520202021: 852022: 2720222023: 642024: 4720242025: 622026: 13820262008-2025 average 462026 through September: 138501001502008: 3720082009: 412010: 920102011: 442012: 3820122013: 532014: 4620142015: 342016: 3020162017: 252018: 7920182019: 602020: 4520202021: 852022: 2720222023: 642024: 4720242025: 622026: 13820262008-2025 average 462026 through September: 138501001502008: 3720082009: 412010: 92011: 442012: 382013: 532014: 462015: 3420152016: 302017: 252018: 792019: 602020: 4520202021: 852022: 272023: 642024: 472025: 622026: 13820262008-2025 average 462026 through September: 138

Every flash flood warning that covered part of New Jersey. 2026 is an outline: the year is not over.

The numbers
YearCount
2026 (through September)138
202562
202447
202364
202227
202185
202045
201960
201879
201725
201630
201534
201446
201353
201238
201144
20109
200941
200837

Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 11, 2026.

When in the year does New Jersey get them?

New Jersey's flash flood warnings by month, 2008-2025
200400Jan: 2JanFeb: 5FebMar: 3MarApr: 6AprMay: 53MayJun: 113JunJul: 312JulAug: 224AugSep: 86SepOct: 14OctNov: 3NovDec: 5Dec312200400Jan: 2JanFeb: 5FebMar: 3MarApr: 6AprMay: 53MayJun: 113JunJul: 312JulAug: 224AugSep: 86SepOct: 14OctNov: 3NovDec: 5Dec312200400Jan: 2JanFeb: 5FebMar: 3MarApr: 6AprMay: 53MayJun: 113JunJul: 312JulAug: 224AugSep: 86SepOct: 14OctNov: 3NovDec: 5Dec312200400Jan: 2JFeb: 5FMar: 3MApr: 6AMay: 53MJun: 113JJul: 312JAug: 224ASep: 86SOct: 14ONov: 3NDec: 5D312

Sum of 2008-2025; the busiest month is labelled.

Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 11, 2026.

Where in New Jersey?

County or forecast zoneSince 2008Since 2023Last issued
Burlington19066September 3, 2026
Bergen18847September 13, 2026
Camden14658September 3, 2026
Essex14330September 13, 2026
Passaic13732September 13, 2026
Gloucester13147September 3, 2026
Somerset12833August 27, 2026
Hudson12732September 13, 2026
Mercer12541September 13, 2026
Middlesex12138September 13, 2026
Hunterdon11435September 2, 2026
Morris10834September 13, 2026

The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.

Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 11, 2026.

The latest flash flood warnings for New Jersey in AreaZine's record

This list is AreaZine's record of the NWS alert feed, kept since April 6, 2026; the counts above come from the complete IEM archive.

Source: National Weather Service alerts (api.weather.gov).

Every flash flood warning for New Jersey in AreaZine's record

124 notices in AreaZine's record; the latest first below. Every one, oldest first: May 20, 2026 to September 13, 2026.

  1. Flash Flood Warning: Bergen and Rockland, NJ and NY Bergen and Rockland expired
  2. Flash Flood Warning: Mercer, Middlesex, Bucks and 3 more, NJ and PA Mercer, Middlesex, Bucks and 3 more expired
  3. Flash Flood Warning: Bergen, Essex, Hudson and 1 more, NJ Bergen, Essex, Hudson and 1 more expired
  4. Flash Flood Warning: Morris, NJ Morris expired
  5. Flash Flood Warning: Cape May and Cumberland, NJ Cape May and Cumberland expired
  6. Flash Flood Warning: New Castle, Burlington, Camden and 6 more, DE and NJ New Castle, Burlington, Camden and 6 more expired
  7. Flash Flood Warning: Atlantic, Camden and Gloucester, NJ Atlantic, Camden and Gloucester expired
  8. Flash Flood Warning: Hunterdon, Mercer, Middlesex and 1 more, NJ and PA Hunterdon, Mercer, Middlesex and 1 more expired
  9. Flash Flood Warning: New Castle, Gloucester, Salem and 2 more, DE and NJ New Castle, Gloucester, Salem and 2 more expired
  10. Flash Flood Warning: Morris, NJ Morris expired
  11. Flash Flood Warning: Essex, Union and Richmond, NJ and NY Essex, Union and Richmond expired
  12. Flash Flood Warning: Ocean, NJ Ocean expired
  13. Flash Flood Warning: Atlantic, Burlington and Ocean, NJ Atlantic, Burlington and Ocean expired
  14. Flash Flood Warning: Atlantic, NJ Atlantic expired
  15. Flash Flood Warning: Burlington, Camden, Bucks and 3 more, NJ and PA Burlington, Camden, Bucks and 3 more expired
  16. Flash Flood Warning: Warren and Northampton, NJ and PA Warren and Northampton expired
  17. Flash Flood Warning: Camden, NJ Camden expired
  18. Flash Flood Warning: Essex, Hudson, Union and 1 more, NJ and NY Essex, Hudson, Union and 1 more expired
  19. Flash Flood Warning: Camden, Delaware County and Philadelphia, NJ and PA Camden, Delaware County and Philadelphia expired
  20. Flash Flood Warning: Middlesex and Monmouth, NJ Middlesex and Monmouth expired

Source: National Weather Service alerts (api.weather.gov). A U.S. Government work, in the public domain.

What is a flash flood warning?

A flash flood warning means flash flooding is happening or about to happen: water rising fast in streams, streets or dry washes, usually within six hours of heavy rain or a dam or levee failure. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. The national record · Every warning type in New Jersey.

How does New Jersey compare with its neighbours?

Pennsylvania gets the most on New Jersey's border: 136 a year in 2021-2025.

StateA year, 2021-2025A year, 2008-2025Rank of all states
Pennsylvania13611113th
New York1079219th
New Jersey574627th
Delaware131246th

Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 11, 2026.

More records for New Jersey