Florida alerts

Saint Johns County, Florida weather alerts

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

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

Saint Johns County forecastLive radar here

Radar

Reflectivity now over Saint Johns 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 Saint Johns 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 Saint Johns County

In the past year the National Weather Service issued 229 alerts for Saint Johns County, including 49 severe thunderstorm warnings, 12 freeze warnings, 5 red flag warnings and 2 coastal flood warnings.

ProductIssuedMost recent
Severe Thunderstorm Warning49Sep 11, 2026
Freeze Warning12Feb 24, 2026
Red Flag Warning5May 7, 2026
Coastal Flood Warning2Oct 10, 2025
Extreme Heat Warning2Aug 18, 2026
Extreme Cold Warning1Jan 31, 2026
Freeze Watch8Feb 24, 2026
Tornado Watch3May 2, 2026
Coastal Flood Watch2Oct 10, 2025
Fire Weather Watch2May 7, 2026
Extreme Cold Watch1Jan 31, 2026
Extreme Heat Watch1Jul 29, 2026
Severe Thunderstorm Watch1Jul 29, 2026
Flood Advisory31Sep 10, 2026
Heat Advisory22Aug 21, 2026
Dense Fog Advisory13Mar 22, 2026
Cold Weather Advisory10Feb 24, 2026
High Surf Advisory7Jun 2, 2026
Wind Advisory6Apr 7, 2026
Coastal Flood Advisory5Apr 9, 2026
Frost Advisory5Feb 25, 2026
Rip Currents Statement41Sep 15, 2026

Warnings issued

  1. Severe Thunderstorm Warning
  2. Severe Thunderstorm Warning
  3. Severe Thunderstorm Warning
  4. Severe Thunderstorm Warning
  5. Severe Thunderstorm 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. Extreme Heat Warning
  21. Severe Thunderstorm Warning
  22. Severe Thunderstorm Warning
  23. Severe Thunderstorm Warning
  24. Severe Thunderstorm 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. Severe Thunderstorm Warning
  45. Severe Thunderstorm Warning
  46. Severe Thunderstorm Warning
  47. Red Flag Warning
  48. Red Flag Warning
  49. Severe Thunderstorm Warning
  50. Severe Thunderstorm Warning
  51. Severe Thunderstorm Warning
  52. Severe Thunderstorm Warning
  53. Severe Thunderstorm Warning
  54. Freeze Warning
  55. Red Flag Warning
  56. Red Flag Warning
  57. Red Flag Warning
  58. Freeze Warning
  59. Freeze Warning
  60. Extreme Cold Warning

And 11 earlier warnings.

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

The 40 most recent of 229.

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 Saint Johns 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.