Delaware alerts

Sussex County, Delaware weather alerts

6 National Weather Service alerts are in force for Sussex County: 2 coastal flood warnings, a high wind warning, a rip current statement, a wind advisory and 1 other kind.

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

Sussex County forecastLive radar here

Warnings on the map

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

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

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

Alerts in force6

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

Coastal Flood Warning

Severe

Coastal Flood Warning issued September 26 at 4:20AM EDT until September 27 at 2:00PM EDT by NWS Mount Holly NJ

Issued Until 32 hr 44 min left

Areas Kent, DE; Inland Sussex, DE

Full text

* WHAT...Two to three feet of inundation above ground level in low-lying areas near shorelines and tidal waterways. * WHERE...Kent and Inland Sussex. * WHEN...Until 2 PM EDT Sunday. * IMPACTS...At this level, flooding may become severe enough to cause structural damage along with widespread roadway flooding in coastal and bayside communities, and near inland tidal waterways. Some locations may become isolated by the flood waters.

What to do

A Coastal Flood Warning means that moderate or major tidal flooding is occurring or imminent. Be prepared for rising water levels and take appropriate action to protect life and property. Follow the recommendations of local emergency management officials. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. Visit the National Water Prediction Service at https://water.noaa.gov/wfo/phi for additional water level and flood impact information for your local tide gauge.

NWS Mount Holly NJShare this alert

Coastal Flood Warning

Severe

Coastal Flood Warning issued September 26 at 4:20AM EDT until September 27 at 2:00PM EDT by NWS Mount Holly NJ

Issued Until 32 hr 44 min left

Areas Delaware Beaches, DE

Full text

* WHAT...For the Coastal Flood Warning, two to three feet of inundation above ground level in low-lying areas near shorelines and tidal waterways. For the High Surf Advisory, large breaking waves of up to 11 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. * WHERE...Delaware Beaches. * WHEN...For the Coastal Flood Warning, until 2 PM EDT Sunday. For the High Surf Advisory, until 8 PM EDT Sunday. For the High Rip Current Risk, through Sunday evening. * IMPACTS...At this level, flooding may become severe enough to cause structural damage along with widespread roadway flooding in coastal and bayside communities, and near inland tidal waterways. Some locations may become isolated by the flood waters. Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...Significant beach erosion is expected. Breaching of sand dunes is possible.

What to do

A Coastal Flood Warning means that moderate or major tidal flooding is occurring or imminent. Be prepared for rising water levels and take appropriate action to protect life and property. Follow the recommendations of local emergency management officials. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. Visit the National Water Prediction Service at https://water.noaa.gov/wfo/phi for additional water level and flood impact information for your local tide gauge. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. Always obey posted Beach Flags. If you enter the surf zone, always have a floatation device with you and swim near a lifeguard if possible. If caught in a rip current, relax and float and do not swim against the current. If able, swim parallel to the shoreline. If unable to escape, face the shore and call or wave for help.

NWS Mount Holly NJShare this alert

High Wind Warning

Severe

High Wind Warning issued September 26 at 4:08AM EDT until September 27 at 6:00AM EDT by NWS Mount Holly NJ

Issued Until 24 hr 44 min left

Areas Delaware Beaches, DE; Eastern Monmouth, NJ; Atlantic Coastal Cape May, NJ; Coastal Atlantic, NJ; Coastal Ocean, NJ

Full text

* WHAT...North winds 30 to 40 mph with gusts up to 60 mph. * WHERE...In Delaware, Delaware Beaches County. In New Jersey, Eastern Monmouth, Atlantic Coastal Cape May, Coastal Atlantic, and Coastal Ocean Counties. * WHEN...Until 6 AM EDT Sunday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.

What to do

People are urged to secure loose objects that could be blown around or damaged by the wind.

NWS Mount Holly NJShare this alert

Rip Current Statement

Moderate

Rip Current Statement issued September 26 at 4:20AM EDT until September 27 at 8:00PM EDT by NWS Mount Holly NJ

Issued Until 38 hr 44 min left

Areas Delaware Beaches, DE

Full text

* WHAT...For the Coastal Flood Warning, two to three feet of inundation above ground level in low-lying areas near shorelines and tidal waterways. For the High Surf Advisory, large breaking waves of up to 11 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. * WHERE...Delaware Beaches. * WHEN...For the Coastal Flood Warning, until 2 PM EDT Sunday. For the High Surf Advisory, until 8 PM EDT Sunday. For the High Rip Current Risk, through Sunday evening. * IMPACTS...At this level, flooding may become severe enough to cause structural damage along with widespread roadway flooding in coastal and bayside communities, and near inland tidal waterways. Some locations may become isolated by the flood waters. Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...Significant beach erosion is expected. Breaching of sand dunes is possible.

What to do

A Coastal Flood Warning means that moderate or major tidal flooding is occurring or imminent. Be prepared for rising water levels and take appropriate action to protect life and property. Follow the recommendations of local emergency management officials. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. Visit the National Water Prediction Service at https://water.noaa.gov/wfo/phi for additional water level and flood impact information for your local tide gauge. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. Always obey posted Beach Flags. If you enter the surf zone, always have a floatation device with you and swim near a lifeguard if possible. If caught in a rip current, relax and float and do not swim against the current. If able, swim parallel to the shoreline. If unable to escape, face the shore and call or wave for help.

NWS Mount Holly NJShare this alert

Wind Advisory

Moderate

Wind Advisory issued September 26 at 4:08AM EDT until September 27 at 6:00AM EDT by NWS Mount Holly NJ

Issued Until 24 hr 44 min left

Areas Inland Sussex, DE; Western Monmouth, NJ; Ocean, NJ; Atlantic, NJ; Cape May, NJ; Southeastern Burlington, NJ

Full text

* WHAT...North winds 15 to 25 mph with gusts up to 50 mph. * WHERE...In Delaware, Inland Sussex County. In New Jersey, Western Monmouth, Atlantic, Cape May, Ocean, and Southeastern Burlington Counties. * 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.

NWS Mount Holly NJShare this alert

High Surf Advisory

Minor

High Surf Advisory issued September 26 at 4:20AM EDT until September 27 at 8:00PM EDT by NWS Mount Holly NJ

Issued Until 38 hr 44 min left

Areas Delaware Beaches, DE

Full text

* WHAT...For the Coastal Flood Warning, two to three feet of inundation above ground level in low-lying areas near shorelines and tidal waterways. For the High Surf Advisory, large breaking waves of up to 11 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. * WHERE...Delaware Beaches. * WHEN...For the Coastal Flood Warning, until 2 PM EDT Sunday. For the High Surf Advisory, until 8 PM EDT Sunday. For the High Rip Current Risk, through Sunday evening. * IMPACTS...At this level, flooding may become severe enough to cause structural damage along with widespread roadway flooding in coastal and bayside communities, and near inland tidal waterways. Some locations may become isolated by the flood waters. Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...Significant beach erosion is expected. Breaching of sand dunes is possible.

What to do

A Coastal Flood Warning means that moderate or major tidal flooding is occurring or imminent. Be prepared for rising water levels and take appropriate action to protect life and property. Follow the recommendations of local emergency management officials. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. Visit the National Water Prediction Service at https://water.noaa.gov/wfo/phi for additional water level and flood impact information for your local tide gauge. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. Always obey posted Beach Flags. If you enter the surf zone, always have a floatation device with you and swim near a lifeguard if possible. If caught in a rip current, relax and float and do not swim against the current. If able, swim parallel to the shoreline. If unable to escape, face the shore and call or wave for help.

NWS Mount Holly NJShare this alert

The past year in Sussex County

In the past year the National Weather Service issued 156 alerts for Sussex County, including 40 severe thunderstorm warnings, 4 flash flood warnings, 4 freeze warnings and 3 coastal flood warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning40Sep 4, 2026
Flash Flood Warning4Aug 28, 2026
Freeze Warning4Apr 21, 2026
Coastal Flood Warning3Sep 22, 2026
High Wind Warning3Sep 25, 2026
Tornado Warning3Jul 28, 2026
Blizzard Warning1Feb 22, 2026
Extreme Cold Warning1Feb 7, 2026
Extreme Heat Warning1Jul 2, 2026
Snow Squall Warning1Jan 1, 2026
Winter Storm Warning1Jan 25, 2026
Severe Thunderstorm Watch17Sep 3, 2026
Tornado Watch4Aug 20, 2026
Coastal Flood Watch3Sep 23, 2026
Freeze Watch3Apr 21, 2026
High Wind Watch3Sep 25, 2026
Winter Storm Watch2Feb 22, 2026
Extreme Cold Watch1Feb 7, 2026
Extreme Heat Watch1Jul 2, 2026
Coastal Flood Advisory21Sep 22, 2026
Wind Advisory11Sep 25, 2026
Dense Fog Advisory7Apr 3, 2026
Frost Advisory5Nov 7, 2025
Heat Advisory4Sep 3, 2026
Cold Weather Advisory3Feb 8, 2026
High Surf Advisory2Sep 22, 2026
Freezing Fog Advisory1Dec 6, 2025
Winter Weather Advisory1Dec 14, 2025
Rip Currents Statement5Sep 22, 2026

Warnings issued

  1. High Wind Warning
  2. Coastal Flood Warning
  3. Severe Thunderstorm Warning
  4. Severe Thunderstorm Warning
  5. Severe Thunderstorm Warning
  6. Severe Thunderstorm Warning
  7. Severe Thunderstorm Warning
  8. Flash Flood Warning
  9. Severe Thunderstorm Warning
  10. Severe Thunderstorm Warning
  11. Severe Thunderstorm Warning
  12. Severe Thunderstorm Warning
  13. Severe Thunderstorm Warning
  14. Severe Thunderstorm Warning
  15. Tornado Warning
  16. Severe Thunderstorm Warning
  17. Severe Thunderstorm Warning
  18. Flash Flood Warning
  19. Severe Thunderstorm Warning
  20. Severe Thunderstorm Warning
  21. Severe Thunderstorm Warning
  22. Severe Thunderstorm Warning
  23. Flash Flood Warning
  24. Severe Thunderstorm Warning
  25. Severe Thunderstorm Warning
  26. Severe Thunderstorm Warning
  27. Tornado Warning
  28. Severe Thunderstorm Warning
  29. Severe Thunderstorm Warning
  30. Severe Thunderstorm Warning
  31. Flash Flood Warning
  32. Severe Thunderstorm Warning
  33. Severe Thunderstorm Warning
  34. Severe Thunderstorm Warning
  35. Severe Thunderstorm Warning
  36. Severe Thunderstorm Warning
  37. Extreme Heat Warning
  38. Severe Thunderstorm Warning
  39. Severe Thunderstorm Warning
  40. Severe Thunderstorm Warning
  41. Tornado Warning
  42. Severe Thunderstorm Warning
  43. Severe Thunderstorm Warning
  44. Severe Thunderstorm Warning
  45. Severe Thunderstorm Warning
  46. Freeze Warning
  47. Freeze Warning
  48. Freeze Warning
  49. Severe Thunderstorm Warning
  50. Severe Thunderstorm Warning
  51. Severe Thunderstorm Warning
  52. Severe Thunderstorm Warning
  53. Severe Thunderstorm Warning
  54. Coastal Flood Warning
  55. Blizzard Warning
  56. Extreme Cold Warning
  57. High Wind Warning
  58. Winter Storm Warning
  59. Snow Squall Warning
  60. Freeze Warning

And 2 earlier warnings.

Every alert, most recent first
  1. Wind Advisory
  2. High Wind Watch
  3. High Wind Warning
  4. Coastal Flood Watch
  5. Coastal Flood Warning
  6. High Surf Advisory
  7. Coastal Flood Advisory
  8. Rip Currents Statement
  9. Coastal Flood Advisory
  10. Severe Thunderstorm Warning
  11. Severe Thunderstorm Warning
  12. Severe Thunderstorm Watch
  13. Heat Advisory
  14. Severe Thunderstorm Warning
  15. Severe Thunderstorm Warning
  16. Severe Thunderstorm Warning
  17. Severe Thunderstorm Watch
  18. Flash Flood Warning
  19. Severe Thunderstorm Warning
  20. Severe Thunderstorm Warning
  21. Tornado Watch
  22. Severe Thunderstorm Watch
  23. Coastal Flood Advisory
  24. Coastal Flood Advisory
  25. Severe Thunderstorm Warning
  26. Severe Thunderstorm Warning
  27. Severe Thunderstorm Warning
  28. Severe Thunderstorm Warning
  29. Severe Thunderstorm Watch
  30. Severe Thunderstorm Watch
  31. Severe Thunderstorm Watch
  32. Tornado Warning
  33. Severe Thunderstorm Warning
  34. Severe Thunderstorm Warning
  35. Tornado Watch
  36. Severe Thunderstorm Watch
  37. Flash Flood Warning
  38. Severe Thunderstorm Warning
  39. Severe Thunderstorm Warning
  40. Severe Thunderstorm Warning

The 40 most recent of 156.

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 Sussex County since 1986

Nearby

The counties around Sussex 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 Sussex 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.