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

17NM SW Atlantic City NJ

Marine Point Forecast

[NOTICE]
  • Overnight

    Severe Thunderstorms

    WSW 27km/hWinds Decreasing
    < 1m

    Low: 25 °C

  • Thursday

    Showers Likely

    SSW 21km/h
    < 1m

    High: 31 °C

  • Thursday
    Night

    Chance Showers

    SW 14km/hWinds Decreasing
    < 1m

    Low: 23 °C

  • Friday

    Mostly Sunny

    Winds IncreasingSSW 16km/h
    < 1m

    High: 33 °C

  • Friday
    Night

    Partly Cloudy

    SSW 16km/h
    < 1m

    Low: 26 °C

  • Saturday

    Sunny

    Winds IncreasingSW 18km/h
    < 1m

    High: 35 °C

  • Saturday
    Night

    Mostly Clear

    SW 16km/h
    < 1m

    Low: 26 °C

  • Sunday

    Mostly Sunny

    SW 13km/h
    < 1m

    High: 34 °C

  • Sunday
    Night

    Chance Thunderstorms

    SSW 14km/h
    < 1m

    Low: 25 °C


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

...SEVERE THUNDERSTORM WATCH 518 IN EFFECT UNTIL MIDNIGHT EDT

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
WSW wind 22 to 27 km/h becoming S 10 to 15 km/h after midnight. Winds could gust as high as 35 km/h. A chance of showers and thunderstorms. Some storms could be severe, with damaging winds and heavy rain. Patchy fog. Seas 1 m or less.
Thursday
SSW wind 18 to 21 km/h. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Seas 1 m or less.
Thursday Night
SW wind 11 to 14 km/h becoming W 5 to 8 km/h after midnight. A chance of showers and thunderstorms before 2am. Seas 1 m or less.
Friday
WNW wind 8 to 11 km/h becoming SSW 13 to 16 km/h in the afternoon. Mostly sunny. Seas 1 m or less.
Friday Night
SSW wind 13 to 16 km/h. Partly cloudy. Seas 1 m or less.
Saturday
SW wind 11 to 14 km/h increasing to 15 to 18 km/h in the afternoon. Winds could gust as high as 34 km/h. Sunny. Seas 1 m or less.
Saturday Night
SW wind 13 to 16 km/h. Mostly clear. Seas 1 m or less.
Sunday
W wind 11 to 13 km/h becoming SSW in the afternoon. Mostly sunny. Seas 1 m or less.
Sunday Night
SSW wind 11 to 14 km/h. A chance of showers and thunderstorms. Seas 1 m or less.

*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: 39.17°N 74.7°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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