Upcoming Pattern Shift to Bring Heavy Mountain Snow to the West

Heavy, accumulating snow is likely today in the Cascades and Sierra Nevada. Another Bering Sea storm will bring strong winds and heavy precipitation to the Aleutians and southwest Alaska into Thursday. Light snow is expected from the Ohio Valley into the Northeast. A widespread and significant winter storm is expected to move into the Central Rockies and High Plains Thursday into Friday.
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18NM S Annapolis MD

Marine Point Forecast

[NOTICE]
  • Today

    Rain/Snow Likely

    SE 8kt
    < 1ft
  • Tonight

    Gradual Clearing

    Winds IncreasingWNW 16kt
    < 1ft

    Small Craft Advisory
    Small Craft Advisory

  • Thursday

    Increasing Clouds

    NW 10ktWinds Decreasing
    < 1ft
  • Thursday
    Night

    Mostly Cloudy

    S 14kt
    1ft
  • Friday

    Slight Chc Showers

    SSW 12kt
    1ft
  • Friday
    Night

    Chance Showers

    S 15kt
    1ft
  • Saturday

    Scattered Thunderstorms

    SSW 19kt
    2ft
  • Saturday
    Night

    Showers Likely

    NW 17kt
    1ft
  • Sunday

    Sunny

    NW 17kt
    1ft

Associated Zone Forecast which includes this point

Last Update: 6:31 am EST Dec 8, 2021
Forecast Valid: 9am EST Dec 8, 2021-6pm EST Dec 14, 2021

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH LATE

Synopsis: Low pressure will pass south of the area today. High pressure returns for Thursday before the next cold front crosses the area late Saturday. Small Craft Advisories may be needed late Wednesday night into Thursday and again late Thursday night into the weekend. Gale conditions are possible Saturday through Saturday night.

Today
E wind 6 to 8 kt becoming WSW in the afternoon. Rain and snow likely before 1pm, then a slight chance of snow between 1pm and 4pm. Seas 1 ft or less.
Tonight
W wind 8 to 11 kt becoming WNW 13 to 16 kt in the evening. Winds could gust as high as 23 kt. Cloudy during the early evening, then gradual clearing. Seas 1 ft or less.
Thursday
NW wind 5 to 10 kt becoming variable and less than 5 kt. Increasing clouds. Seas 1 ft or less.
Thursday Night
S wind 9 to 14 kt, with gusts as high as 20 kt. Mostly cloudy. Seas around 1 ft.
Friday
SSW wind 10 to 12 kt, with gusts as high as 19 kt. A slight chance of showers after 1pm. Seas around 1 ft.
Friday Night
S wind 10 to 15 kt. A chance of showers. Seas around 1 ft.
Saturday
SSW wind 15 to 19 kt, with gusts as high as 27 kt. Scattered showers, with thunderstorms also possible after 1pm. Seas around 2 ft.
Saturday Night
SW wind 15 to 17 kt becoming NW after midnight. Winds could gust as high as 26 kt. Showers likely and possibly a thunderstorm. Seas around 1 ft.
Sunday
NW wind 12 to 17 kt. Sunny. Seas around 1 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: 38.68°N 76.52°W
Last Update: 6:31 am EST Dec 8, 2021
Forecast Valid: 9am EST Dec 8, 2021-6pm EST Dec 14, 2021
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