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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Last Update: 359 PM EDT Wed Jul 17 2019

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New York, NY Local Forecast Office

10NM E Islip NY

Marine Zone Forecast

...SEVERE THUNDERSTORM WATCH 516 IN EFFECT UNTIL 10 PM EDT THIS

Synopsis: ANZ300-180830- 359 PM EDT Wed Jul 17 2019 .Synopsis for the Long Island Waters and New York Harbor... A cold front and the remnant low of Barry then approach and slowly move through the region tonight and Thursday. The cold front then moves through late Thursday. High pressure will then remain centered over the Southeast into the weekend. Another weak cold front moves slowly through the area Saturday night, followed by a stronger cold front on Monday. $$

Tonight
SW winds 5 to 10 kt, becoming S late. Waves 1 ft or less. Tstms likely this evening. Showers. Slight chance of tstms after midnight. Vsby 1 to 3 nm.
Thu
SE winds 5 to 10 kt. Waves 1 ft or less. Showers likely. Vsby 1 to 3 nm.
Thu Night
E winds 5 to 10 kt, becoming NE after midnight. Waves 1 ft or less. Chance of showers.
Fri
NW winds around 5 kt, becoming SW in the afternoon. Waves 1 ft or less.
Fri Night
SW winds 5 to 10 kt. Waves 1 ft or less.
Sat
SW winds 5 to 10 kt. Waves 1 ft or less.
Sat Night
W winds 5 to 10 kt. Waves 1 ft or less.
Sun
SW winds 5 to 10 kt. Waves 1 ft or less.
Sun Night
SW winds around 10 kt, diminishing to around 5 kt after midnight. Waves 1 ft or less. Chance of showers and tstms after midnight.
Mon
SW winds around 5 kt. Waves 1 ft or less. Chance of showers and tstms.
Mon Night
W winds 5 to 10 kt, becoming NW after midnight. Waves around 2 ft in the evening, then 1 ft or less. Chance of showers and tstms. winds and waves higher in and near tstms.
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ABOUT THIS FORECAST

Last Update: 359 PM EDT Wed Jul 17 2019
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