Hazardous Weather Outlook Issued For Long Island

The National Weather Service has issued a hazardous weather outlook for Long Island.

"The first widespread hot spell of the season is expected this weekend, with heat indices in the low-to-mid 90s away from the coast," the weather service said. "This will increase the risk of heat-related illness for vulnerable populations."

Those heading to the beaches this weekend should be mindful of the water temperatures, which are currently far from midsummer levels, according to AccuWeather.

Physical incapacitation and hypothermia are likely in as little as 10 minutes if you fall in the water. Water temperatures are in the 50s, the weather service said.

Thunderstorms come to break the heat Sunday night. Storms could become severe and bring the risk of strong winds, flooding downpours and hail, AccuWeather says.

The full forecast:

Thursday Night- Patchy fog. Otherwise, mostly cloudy, with a low around 54. South wind around 6 mph becoming calm in the evening.

Friday- Areas of fog before 8am. Otherwise, partly sunny, with a high near 72. Southeast wind 5 to 11 mph.

Friday Night- A 30 percent chance of showers and thunderstorms, mainly between 8pm and 2am. Patchy fog. Otherwise, mostly cloudy, with a low around 62. Southeast wind 6 to 11 mph.

Saturday- Areas of fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 85. Southwest wind 6 to 11 mph.

Saturday Night- Mostly clear, with a low around 65. Southwest wind 6 to 10 mph.

Sunday- Mostly sunny, with a high near 81.

Sunday Night- A 40 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 61.

Monday- A 30 percent chance of showers after 8am. Mostly cloudy, with a high near 74.

Monday Night- A 30 percent chance of showers. Mostly cloudy, with a low around 57.

Tuesday- Mostly cloudy, with a high near 67.