New Jersey alerts

Union County, New Jersey weather alerts

3 National Weather Service alerts are in force for Union County: a coastal flood warning, a wind advisory and a coastal flood advisory.

Checked Sat, Sep 26, 2026, 5:15 AM EDT. Times are Eastern Daylight Time.

Union County forecastLive radar here

Warnings on the map

Every watch, warning and advisory the National Weather Service has in force over Union County, New Jersey. Open it for the live map, where it pans and zooms.

Every watch, warning and advisory the National Weather Service has in force over Union County, New Jersey Open the live map with warnings and watches

Map layer from NOAA National Weather Service. Boundaries from the Iowa Environmental Mesonet.

Alerts in force3

Every product in force for Union County, worst first, with its full text.

Coastal Flood Warning

Severe

Coastal Flood Warning issued September 26 at 5:14AM EDT until September 27 at 6:00PM EDT by NWS Upton NY

Issued Until 36 hr 43 min left

Areas Hudson, NJ; Eastern Bergen, NJ; Eastern Essex, NJ; Eastern Union, NJ; New York (Manhattan), NY

Full text

* WHAT...One to two feet of inundation above ground level in vulnerable areas near the waterfront and shoreline. * WHERE...In New Jersey, Hudson, Eastern Bergen, Eastern Essex and Eastern Union Counties. In New York, New York (Manhattan) County. * WHEN...Until 6 PM EDT Sunday. * IMPACTS...Widespread flooding of vulnerable areas near the waterfront and shoreline, including roads, parking lots, parks, lawns, and homes and businesses with basements near the waterfront. Some road closures are likely, and vehicles parked in vulnerable areas near the waterfront could become flooded.

What to do

Take the necessary actions to protect flood prone property. If travel is required, do not drive around barricades or through water of unknown depth.

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Wind Advisory

Moderate

Wind Advisory issued September 26 at 4:40AM EDT until September 27 at 6:00AM EDT by NWS Upton NY

Issued Until 24 hr 43 min left

Areas Northern Fairfield, CT; Northern New Haven, CT; Eastern Passaic, NJ; Hudson, NJ; Western Bergen, NJ; Eastern Bergen, NJ; Western Essex, NJ; Eastern Essex, NJ; Western Union, NJ; Eastern Union, NJ; Rockland, NY; Northern Westchester, NY

Full text

* WHAT...North winds 15 to 25 mph with gusts up to 45 mph. * WHERE...Northeast New Jersey, Rockland and Northern Westchester Counties in southeast New York, and Northern Fairfield and New Haven Counties in southern Connecticut. * WHEN...Until 6 AM EDT Sunday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

What to do

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.

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Coastal Flood Advisory

Minor

The Coastal Flood Advisory has been replaced. Please see the latest information from NWS Upton NY on this developing situation.

Issued Until 36 hr 43 min left

Areas Hudson, NJ; Eastern Bergen, NJ; Eastern Essex, NJ; Eastern Union, NJ; New York (Manhattan), NY

Full text

The Coastal Flood Advisory has been replaced. Please see the latest information from NWS Upton NY on this developing situation.

What to do

Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth.

NWS Upton NYShare this alert

The past year in Union County

In the past year the National Weather Service issued 145 alerts for Union County, including 18 severe thunderstorm warnings, 12 flash flood warnings, 3 coastal flood warnings and 3 freeze warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning18Sep 1, 2026
Flash Flood Warning12Sep 1, 2026
Coastal Flood Warning3Sep 25, 2026
Freeze Warning3Apr 21, 2026
Winter Storm Warning3Feb 22, 2026
Blizzard Warning1Feb 22, 2026
Extreme Cold Warning1Feb 7, 2026
Extreme Heat Warning1Jul 1, 2026
Snow Squall Warning1Jan 1, 2026
Severe Thunderstorm Watch11Sep 1, 2026
Flood Watch9Sep 13, 2026
Freeze Watch3Apr 21, 2026
Winter Storm Watch3Feb 22, 2026
Coastal Flood Watch1Oct 12, 2025
Extreme Cold Watch1Feb 7, 2026
Extreme Heat Watch1Jul 3, 2026
High Wind Watch1Nov 5, 2025
Tornado Watch1Jul 21, 2026
Flood Advisory24Sep 13, 2026
Wind Advisory9Sep 25, 2026
Coastal Flood Advisory5Sep 25, 2026
Cold Weather Advisory5Feb 8, 2026
Heat Advisory5Aug 9, 2026
Dense Fog Advisory4Mar 16, 2026
Winter Weather Advisory4Feb 10, 2026
Frost Advisory3Apr 8, 2026
Coastal Flood Statement12Sep 24, 2026

Warnings issued

  1. Coastal Flood Warning
  2. Flash Flood Warning
  3. Severe Thunderstorm Warning
  4. Severe Thunderstorm Warning
  5. Flash Flood Warning
  6. Flash Flood Warning
  7. Flash Flood Warning
  8. Severe Thunderstorm Warning
  9. Flash Flood Warning
  10. Flash Flood Warning
  11. Severe Thunderstorm Warning
  12. Flash Flood Warning
  13. Flash Flood Warning
  14. Severe Thunderstorm Warning
  15. Flash Flood Warning
  16. Severe Thunderstorm Warning
  17. Flash Flood Warning
  18. Flash Flood Warning
  19. Severe Thunderstorm Warning
  20. Severe Thunderstorm Warning
  21. Severe Thunderstorm Warning
  22. Severe Thunderstorm Warning
  23. Extreme Heat Warning
  24. Flash Flood Warning
  25. Severe Thunderstorm Warning
  26. Severe Thunderstorm Warning
  27. Severe Thunderstorm Warning
  28. Severe Thunderstorm Warning
  29. Severe Thunderstorm Warning
  30. Severe Thunderstorm Warning
  31. Freeze Warning
  32. Freeze Warning
  33. Severe Thunderstorm Warning
  34. Coastal Flood Warning
  35. Blizzard Warning
  36. Winter Storm Warning
  37. Extreme Cold Warning
  38. Winter Storm Warning
  39. Snow Squall Warning
  40. Winter Storm Warning
  41. Severe Thunderstorm Warning
  42. Freeze Warning
  43. Coastal Flood Warning
Every alert, most recent first
  1. Coastal Flood Warning
  2. Coastal Flood Advisory
  3. Wind Advisory
  4. Coastal Flood Statement
  5. Flood Advisory
  6. Flood Watch
  7. Flood Advisory
  8. Flash Flood Warning
  9. Flood Advisory
  10. Severe Thunderstorm Warning
  11. Severe Thunderstorm Warning
  12. Severe Thunderstorm Watch
  13. Flash Flood Warning
  14. Flood Advisory
  15. Severe Thunderstorm Watch
  16. Flash Flood Warning
  17. Flood Advisory
  18. Flood Watch
  19. Flash Flood Warning
  20. Severe Thunderstorm Warning
  21. Flood Advisory
  22. Flash Flood Warning
  23. Flood Advisory
  24. Flood Watch
  25. Severe Thunderstorm Watch
  26. Heat Advisory
  27. Flash Flood Warning
  28. Severe Thunderstorm Warning
  29. Severe Thunderstorm Watch
  30. Heat Advisory
  31. Flood Advisory
  32. Flood Advisory
  33. Flash Flood Warning
  34. Flood Advisory
  35. Flood Advisory
  36. Flood Advisory
  37. Flood Watch
  38. Flash Flood Warning
  39. Flood Advisory
  40. Severe Thunderstorm Warning

The 40 most recent of 145.

From the Iowa Environmental Mesonet’s archive of NWS watches, warnings and advisories (VTEC), by the county’s own code and the forecast zones inside it. Each links to the alert's own page, with its text, map, radar and sounding.

Every alert in Union County since 1986

Nearby

The counties around Union County, with what is in force in each.

What this means

Warning
The hazard is happening or about to. Act now: a tornado warning means take shelter, a flash flood warning means move to higher ground.
Watch
Conditions favor the hazard. Nothing is happening yet; have a plan and be ready to act if a warning follows.
Advisory
A hazard that is less serious than a warning but can still cause trouble, such as dense fog, heat or light ice.
Statement
Information about weather that does not yet meet a warning: a strong storm, a hydrologic update, or a special weather statement.

Severity (extreme, severe, moderate, minor) is the rating the issuing office gives each product. More on the difference: tornado watch vs. tornado warning. Alerts come from the National Weather Service; follow its instructions and your local officials.

Follow these alerts

Alerts for Union County in your reader or calendar.

The alerts on this page as a feed, updated every minute, for a feed reader or an app that reads Atom or RSS, and as a calendar where each alert runs from when it takes effect to when it ends. A feed or a calendar is not a warning siren: for warnings, keep a weather radio or your phone's emergency alerts on.

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Sources

Alerts from the National Weather Service's public feed, read afresh every minute, and matched to counties and zones by their UGC codes. Warnings from outside the United States come from each country's own meteorological service. Follow the issuing office's instructions and your local officials.