Dangerous Heat and Humidity Building from the Plains to the East Coast

A strengthening ridge of high pressure will produce much above average temperatures from the Plains to the East Coast, a true summer heat wave. Highs in the 90s and triple digits combined w/ humidity and dewpoints surging into the upper 70s, if not low 80s, will create heat indices as high as 110 to 115 through this weekend. Air quality will likely be poor due to haze and little air circulation.
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Philadelphia, PA Local Forecast Office

31NM S New York NY

Marine Point Forecast

[NOTICE]
  • Overnight

    Severe Thunderstorms

    SSW 10kt
    < 1ft

    Low: 75 °F

  • Thursday

    Showers Likely

    S 11kt
    < 1ft

    High: 83 °F

  • Thursday
    Night

    Chance Showers

    S 7ktWinds Decreasing
    Waves Building2ft

    Low: 81 °F

  • Friday

    Mostly Sunny

    Winds IncreasingSSW 11kt
    2ft

    High: 88 °F

  • Friday
    Night

    Partly Cloudy

    SW 10kt
    2ft

    Low: 78 °F

  • Saturday

    Sunny

    SW 10kt
    2ft

    High: 93 °F

  • Saturday
    Night

    Partly Cloudy

    WSW 9kt
    2ft

    Low: 79 °F

  • Sunday

    Mostly Sunny

    S 7kt
    2ft

    High: 90 °F

  • Sunday
    Night

    Chance Thunderstorms

    WSW 8kt
    2-3ft

    Low: 77 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:41 pm EDT Jul 17, 2019
Forecast Valid: 11pm EDT Jul 17, 2019-6pm EDT Jul 24, 2019

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Detailed Forecast


Synopsis: The remnants of former tropical cyclone Barry will continue to move across the area tonight through Thursday while a cold front slowly settles across the area as well. The front will finally push south of the area and wash out Thursday night. A lee side trough is forecast to develop across the east coast Friday and continue through the weekend. A couple of cold fronts move southward toward the area over the weekend, but never make it into the area, before a stronger cold front moves across the east coast Sunday night into Monday night.

Overnight
SSW wind 7 to 10 kt becoming W after midnight. Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Some storms could be severe, with damaging winds and heavy rain. Patchy fog. Seas 1 ft or less.
Thursday
S wind 8 to 11 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 10am. Seas 1 ft or less.
Thursday Night
S wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms before 2am. Seas 1 ft or less building to 2 ft.
Friday
Variable winds less than 5 kt becoming SSW 6 to 11 kt in the afternoon. Mostly sunny. Seas around 2 ft.
Friday Night
SW wind 7 to 10 kt. Partly cloudy. Seas around 2 ft.
Saturday
W wind 7 to 10 kt becoming SW in the afternoon. Sunny. Seas around 2 ft.
Saturday Night
WSW wind 6 to 9 kt. Partly cloudy. Seas around 2 ft.
Sunday
WNW wind 5 to 7 kt becoming S in the afternoon. Mostly sunny. Seas around 2 ft.
Sunday Night
WSW wind 5 to 8 kt. A chance of showers and thunderstorms. Seas 2 to 3 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: 40.2°N 73.97°W
Last Update: 9:41 pm EDT Jul 17, 2019
Forecast Valid: 11pm EDT Jul 17, 2019-6pm EDT Jul 24, 2019
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