Heat Continues For Parts Of Western & Southern U.S. While Monsoon Slowly Begins To Decrease

Another day of dangerous heat is in store for parts of the western and southern U.S. on Tuesday before a cooling trend begins Wednesday. Excessive Heat Warnings are in effect for northern CA and southwestern OR, while Heat Advisories cover parts of the southern Plains/Lower MS Valley. Meanwhile, monsoon will slowly taper off Tuesday in the Southwest, but isolated heavy rain remains possible.
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For More Weather Information:

Gray/Portland, ME Local Forecast Office

20NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]
  • Overnight

    Slight Chc Thunderstorms

    S 15km/h
    1m

    Low: 19 °C

  • Tuesday

    Severe Thunderstorms

    S 25km/hWinds Decreasing
    1m

    High: 21 °C

    Small Craft Advisory
    Small Craft Advisory

  • Tuesday
    Night

    Severe Thunderstorms

    S 20km/hWinds Decreasing
    1m

    Low: 18 °C

    Small Craft Advisory
    Small Craft Advisory

  • Wednesday

    Mostly Sunny

    N 15km/hWinds Decreasing
    1m

    High: 23 °C

  • Wednesday
    Night

    Mostly Clear

    NNW 20km/h
    1m

    Low: 17 °C

  • Thursday

    Sunny

    N 15km/hWinds Decreasing
    1m

    High: 21 °C

  • Thursday
    Night

    Clear

    S 15km/h
    1m

    Low: 17 °C

  • Friday

    Sunny

    Winds IncreasingS 15km/h
    1m

    High: 22 °C

  • Friday
    Night

    Mostly Clear

    S 20km/h
    1m

    Low: 18 °C


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:25 am EDT Jul 17, 2018
Forecast Valid: 4am EDT Jul 17, 2018-6pm EDT Jul 23, 2018

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Detailed Forecast


Synopsis: ANZ100-172130- 316 AM EDT Tue Jul 17 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... Southerly winds will strengthen ahead of a strong cold front which will move through the waters tonight. High pressure will begin to build into the region from the west on Wednesday...remaining over the northeast on Thursday and Friday. This high will push east into the Canadian maritimes this weekend with low pressure approaching the region from the west. $$

Overnight
S wind around 15 km/h. A slight chance of showers and thunderstorms. Areas of dense fog. Seas around 1 m.
Tuesday
S wind 20 to 25 km/h decreasing to 15 to 20 km/h in the afternoon. Winds could gust as high as 35 km/h. Showers and thunderstorms, mainly after 3pm. Some storms could be severe, with damaging winds and heavy rain. Areas of dense fog. Seas around 1 m.
Tuesday Night
S wind 15 to 20 km/h becoming SW 10 to 15 km/h after midnight. Winds could gust as high as 30 km/h. Showers and thunderstorms before midnight, then a chance of showers between midnight and 5am. Some of the storms could be severe. Areas of dense fog. Seas around 1 m.
Wednesday
N wind 10 to 15 km/h becoming E 5 to 8 km/h. Mostly sunny. Seas around 1 m.
Wednesday Night
NNW wind 15 to 20 km/h. Mostly clear. Seas around 1 m.
Thursday
N wind 12 to 15 km/h becoming E 10 to 13 km/h in the afternoon. Sunny. Seas around 1 m.
Thursday Night
S wind 10 to 15 km/h becoming WSW after midnight. Clear. Seas around 1 m.
Friday
W wind 5 to 8 km/h becoming S 10 to 15 km/h in the morning. Sunny. Seas around 1 m.
Friday Night
S wind 15 to 20 km/h becoming SSW after midnight. Mostly clear. Seas around 1 m.

*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: 43.17°N 70.36°W
Last Update: 3:25 am EDT Jul 17, 2018
Forecast Valid: 4am EDT Jul 17, 2018-6pm EDT Jul 23, 2018
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