National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Coastal Flood Warnings and Heavy Rainfall this Weekend - Updated Briefing

Coastal Flood Warnings have been issued through early next week along portions of the northeast Florida Atlantic coast and within the St. Johns River basin. Dangerous marine and surf conditions will continue, with heavy rainfall possible this weekend, which may exacerbate flooding at coastal locations. Please monitor this briefing for the latest updates this weekend and early next week. Read More >

Hazardous Weather Conditions

Current conditions at

Mayport Naval Station - Adm David L. McDonald Field (KNRB)

Lat: 30.4°NLon: 81.42°WElev: 13ft.

Partly Cloudy

75°F

24°C

Humidity 88%
Wind Speed NE 16 mph
Barometer 30.03 in (1016.8 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 4 Oct 3:52 am EDT
Extended Forecast for

2 Miles SSE Mayport Naval Station FL

High Surf Advisory October 4, 04:49am until October 7, 05:00am
Coastal Flood Warning October 4, 04:49am until October 7, 05:00am
Click here for hazard details and duration
High Surf Advisory
Coastal Flood Warning
  •  
    High Surf Advisory October 4, 04:49am until October 7, 05:00am
    Coastal Flood Warning October 4, 04:49am until October 7, 05:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 73 °F

    Chance
    Showers and
    Breezy

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Windy, with an east wind around 21 mph, with gusts as high as 29 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    Showers and
    Windy

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms after 9pm. Mostly cloudy, with a low around 76. Windy, with an east wind around 21 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 76 °F

    Showers
    Likely and
    Windy

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83. Windy, with an east wind 18 to 21 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely and
    Windy

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Windy, with an east wind 20 to 22 mph, with gusts as high as 25 mph.

    Low: 75 °F

    Windy. Chance
    Showers then
    Chance
    T-storms

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Windy. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely and
    Windy

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Windy. Chance of precipitation is 30%.

    Low: 75 °F

    Windy. Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly before 2pm. Mostly sunny, with a high near 82. Breezy.

    High: 82 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Breezy, with an east wind around 18 mph, with gusts as high as 25 mph.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Windy, with an east wind around 21 mph, with gusts as high as 29 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms after 9pm. Mostly cloudy, with a low around 76. Windy, with an east wind around 21 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83. Windy, with an east wind 18 to 21 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Windy, with an east wind 20 to 22 mph, with gusts as high as 25 mph.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Windy. Chance of precipitation is 60%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Windy. Chance of precipitation is 30%.
Tuesday
A 30 percent chance of showers, mainly before 2pm. Mostly sunny, with a high near 82. Breezy.
Tuesday Night
A 10 percent chance of showers before 8pm. Partly cloudy, with a low around 75. Breezy.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 82. Breezy.
Wednesday Night
Partly cloudy, with a low around 74.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81. Windy.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Windy.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 78. Windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Mayport Naval Station FL
 30.39°N 81.4°W
Last Update:
1:26 am EDT Oct 4, 2025
Forecast Valid:
4am EDT Oct 4, 2025-6pm EDT Oct 10, 2025
 
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Additional Resources

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