Florida alerts

Nassau County, Florida weather alerts

No watches, warnings or advisories are in force for Nassau County.

Checked Sun, Sep 20, 2026, 9:28 AM EDT. Times are Eastern Daylight Time.

Nassau County forecastLive radar here

Radar

Reflectivity now over Nassau County, Florida. Open it to see warnings and watches on the map.

Open the live radar with warnings and watches

Radar mosaic and map layers from NOAA MRMS. Boundaries from the Iowa Environmental Mesonet.

Alerts in force

Nothing is in force for Nassau County right now. Its warnings come from the National Weather Service and appear here within a minute of being issued; every one of the past year is below.

The past year in Nassau County

In the past year the National Weather Service issued 256 alerts for Nassau County, including 42 severe thunderstorm warnings, 27 freeze warnings, 8 red flag warnings and 2 extreme heat warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning42Sep 11, 2026
Freeze Warning27Mar 18, 2026
Red Flag Warning8May 7, 2026
Extreme Heat Warning2Aug 18, 2026
Coastal Flood Warning1Oct 10, 2025
Extreme Cold Warning1Jan 31, 2026
Flash Flood Warning1Aug 28, 2026
Freeze Watch19Mar 18, 2026
Fire Weather Watch3May 7, 2026
Tornado Watch2Mar 16, 2026
Coastal Flood Watch1Oct 10, 2025
Extreme Cold Watch1Jan 31, 2026
Extreme Heat Watch1Jul 29, 2026
Severe Thunderstorm Watch1Jul 29, 2026
Flood Advisory26Sep 10, 2026
Heat Advisory22Aug 21, 2026
Dense Fog Advisory21May 14, 2026
Cold Weather Advisory11Feb 24, 2026
Frost Advisory9Feb 25, 2026
Wind Advisory8Apr 8, 2026
High Surf Advisory6Jun 2, 2026
Coastal Flood Advisory3Oct 11, 2025
Rip Currents Statement40Sep 15, 2026

Warnings issued

  1. Severe Thunderstorm Warning
  2. Severe Thunderstorm Warning
  3. Severe Thunderstorm Warning
  4. Severe Thunderstorm Warning
  5. Flash Flood Warning
  6. Severe Thunderstorm Warning
  7. Severe Thunderstorm Warning
  8. Severe Thunderstorm Warning
  9. Severe Thunderstorm Warning
  10. Severe Thunderstorm Warning
  11. Severe Thunderstorm Warning
  12. Extreme Heat Warning
  13. Severe Thunderstorm Warning
  14. Severe Thunderstorm Warning
  15. Severe Thunderstorm Warning
  16. Severe Thunderstorm Warning
  17. Severe Thunderstorm Warning
  18. Severe Thunderstorm Warning
  19. Severe Thunderstorm Warning
  20. Severe Thunderstorm Warning
  21. Severe Thunderstorm Warning
  22. Severe Thunderstorm Warning
  23. Severe Thunderstorm Warning
  24. Extreme Heat 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. Severe Thunderstorm Warning
  32. Severe Thunderstorm Warning
  33. Severe Thunderstorm Warning
  34. Severe Thunderstorm Warning
  35. Severe Thunderstorm Warning
  36. Severe Thunderstorm Warning
  37. Severe Thunderstorm Warning
  38. Severe Thunderstorm Warning
  39. Severe Thunderstorm Warning
  40. Severe Thunderstorm Warning
  41. Severe Thunderstorm Warning
  42. Severe Thunderstorm Warning
  43. Severe Thunderstorm Warning
  44. Red Flag Warning
  45. Red Flag Warning
  46. Red Flag Warning
  47. Red Flag Warning
  48. Freeze Warning
  49. Severe Thunderstorm Warning
  50. Severe Thunderstorm Warning
  51. Freeze Warning
  52. Freeze Warning
  53. Red Flag Warning
  54. Freeze Warning
  55. Red Flag Warning
  56. Freeze Warning
  57. Red Flag Warning
  58. Freeze Warning
  59. Freeze Warning
  60. Freeze Warning

And 22 earlier warnings.

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

The 40 most recent of 256.

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 date links to the event at the IEM.

Nearby

The counties around Nassau 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.

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.