Heavy Rain and Mountain Snow For the West Coast; Lake Effect Snow in the Great Lakes

A series of Pacific storms will deliver multiple rounds of heavy rain and mountain snow Wednesday into the Thanksgiving holiday weekend. There is an elevated concern for flash flooding, mudslides and debris flows near wildfire burn scars in California. A weak storm system will cross the Great Lakes Wednesday with accumulating Lake Effect snow.
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Jacksonville, FL Local Forecast Office

2NM E Mayport FL

Marine Point Forecast

[NOTICE]
  • Tonight

    Mostly Clear

    N 11kt
    2-3ft

    Low: 57 °F

  • Wednesday

    Sunny

    N 11kt
    2-3ft

    High: 66 °F

  • Wednesday
    Night

    Mostly Clear

    N 11kt
    2-3ft

    Low: 60 °F

  • Thanksgiving
    Day

    Slight Chc Showers

    NNE 19kt
    3-4ft

    High: 67 °F

  • Thursday
    Night

    Showers Likely

    NE 19kt
    5-6ft

    Low: 64 °F

  • Friday

    Showers

    E 19kt
    6-7ft

    High: 69 °F

  • Friday
    Night

    Showers Likely

    E 14kt
    5-6ft

    Low: 67 °F

  • Saturday

    Showers Likely

    SSW 15kt
    4-5ft

    High: 74 °F

  • Saturday
    Night

    Partly Cloudy

    W 9kt
    3-4ft

    Low: 63 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:16 pm EST Nov 20, 2018
Forecast Valid: 9pm EST Nov 20, 2018-6pm EST Nov 27, 2018

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Detailed Forecast


Synopsis: A weak cold front will push south of the area tonight as high pressure builds northwest of the region through Wednesday. Strengthening onshore winds develop Thursday as high pressure builds over the Carolinas. Low pressure with an associated cold front will move across the region Saturday. Advisory conditions expected Thursday through Saturday.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of Nov 20, 2018 at 1200 UTC...

69 nautical miles east of Flagler Beach. 78 nautical miles east of Saint Augustine Beach. 82 nautical miles east of Jacksonville Beach. 94 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

Tonight
N wind 6 to 11 kt. Mostly clear. Seas 2 to 3 ft.
Wednesday
N wind 9 to 11 kt. Sunny. Seas 2 to 3 ft.
Wednesday Night
N wind 9 to 11 kt. Mostly clear. Seas 2 to 3 ft.
Thanksgiving Day
NNE wind 13 to 19 kt, with gusts as high as 26 kt. A slight chance of showers after 1pm. Seas 3 to 4 ft.
Thursday Night
NE wind 17 to 19 kt, with gusts as high as 26 kt. A chance of showers, then showers likely and possibly a thunderstorm after 1am. Seas 5 to 6 ft.
Friday
E wind 16 to 19 kt, with gusts as high as 26 kt. Showers. Seas 6 to 7 ft.
Friday Night
E wind 11 to 14 kt becoming SSE after midnight. Showers likely. Seas 5 to 6 ft.
Saturday
SSW wind 9 to 15 kt, with gusts as high as 21 kt. Showers likely and possibly a thunderstorm. Seas 4 to 5 ft.
Saturday Night
W wind 7 to 9 kt. Partly cloudy. Seas 3 to 4 ft.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 30.36°N 81.35°W
Last Update: 8:16 pm EST Nov 20, 2018
Forecast Valid: 9pm EST Nov 20, 2018-6pm EST Nov 27, 2018
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