Severe Thunderstorms and Locally Heavy Rainfall Shifts from the Plains to Mid Mississippi Valley on Monday

A strong upper disturbance will depart the central Rockies into the central Plains to form a rather wound-up area of low pressure on Monday. This will shift the chances for severe thunderstorms and locally heavy rainfall from portions of the central and southern Plains into the Mid Mississippi Valley.
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Gray/Portland, ME Local Forecast Office

25NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]
  • Overnight

    Showers Likely

    SW 10kt
    3ft

    Low: 59 °F

  • Monday

    Chance Showers

    N 20kt
    3ft

    High: 62 °F

  • Monday
    Night

    Chance Showers

    WNW 10kt
    2ft

    Low: 56 °F

  • Tuesday

    Sunny

    Winds IncreasingSSW 10kt
    2-3ft

    High: 69 °F

  • Tuesday
    Night

    Mostly Clear

    SSW 15kt
    3ft

    Low: 57 °F

  • Wednesday

    Mostly Sunny

    SSW 15kt
    2ft

    High: 66 °F

  • Wednesday
    Night

    Chance Showers

    S 20kt
    4ft

    Low: 61 °F

  • Thursday

    Showers

    S 20kt
    Waves Building7ft

    High: 67 °F

  • Thursday
    Night

    Showers

    SW 20ktWinds Decreasing
    7-8ft

    Low: 62 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 10:30 pm EDT Jun 24, 2018
Forecast Valid: 1am EDT Jun 25, 2018-6pm EDT Jul 1, 2018

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Detailed Forecast


Synopsis: ANZ100-251645- 1032 PM EDT Sun Jun 24 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... Weak low pressure crosses southern New England and deepens as it moves through the Gulf of Maine tonight toward Nova Scotia by morning. A northerly flow will be expected behind this low on Monday, with high pressure building out of Ontario and across southern New England, cresting to the south on Tuesday. Southwest flow on Wednesday becomes southerly on Thursday ahead of the next front that moves through the Gulf of Maine Thursday night from the west. $$

Overnight
SW wind around 10 kt becoming W. Showers likely and possibly a thunderstorm. Patchy fog. Seas around 3 ft.
Monday
N wind 15 to 20 kt. A chance of showers before 8am, then a chance of showers after 1pm. Patchy fog before 11am. Seas around 3 ft.
Monday Night
N wind 5 to 10 kt becoming ENE in the evening. A chance of showers before 7pm. Seas around 2 ft.
Tuesday
W wind 5 to 8 kt becoming SSW 7 to 10 kt in the afternoon. Sunny. Seas 2 to 3 ft.
Tuesday Night
SSW wind 10 to 15 kt becoming WSW after midnight. Winds could gust as high as 25 kt. Mostly clear. Seas around 3 ft.
Wednesday
WSW wind 10 to 15 kt becoming S in the afternoon. Mostly sunny. Seas around 2 ft.
Wednesday Night
S wind 15 to 20 kt. A chance of showers after 9pm. Seas around 4 ft.
Thursday
S wind around 20 kt, with gusts as high as 30 kt. Showers. Seas 4 ft building to 7 ft.
Thursday Night
SW wind 15 to 20 kt decreasing to 10 to 15 kt after midnight. Showers. Seas 7 to 8 ft.

Winds and seas higher in and near tstms.

*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: 43.18°N 70.24°W
Last Update: 10:30 pm EDT Jun 24, 2018
Forecast Valid: 1am EDT Jun 25, 2018-6pm EDT Jul 1, 2018
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