A heat advisory is in effect for all of Long Island Thursday and Friday. This will likely be extended through at least Saturday, too. Please stay heat-smart, take breaks from the heat and stay hydrated. It can feel like it is 100 degrees during this stretch. Actual air temperatures will peak around the mid-80s to near 90 degrees, but the tropical-like humidity will make it feel much hotter.

You will be able to feel some relief along the immediate South Shore at the beaches. Pop-up, widely scattered shower and storm chances will be possible, but not worthy of canceling outdoor plans. There is more on that below.

Mainly cloudy with a passing rain shower. Warm and muggy with evening temperatures dropping through the 70s. Low temperatures will not drop too much more overnight. Morning temperatures early on Thursday will be in the lower to middle 70s with very high humidity.

The current rip current forecast this evening through the next few days is a moderate to borderline high risk at times. Please remain cautious about swimming at the Atlantic Ocean beaches as you try to find some relief from the hot and humid weather and only enter the water where a lifeguard is on duty.

The bulk of pop-up thunderstorms over the next several days will occur north and west of Long Island and no day will be even close to a washout. That said, an isolated pop-up shower or downpour cannot be ruled out overnight and through Thursday.

A better chance for a few late-afternoon and evening thunderstorms will be Friday, but the coverage and placement of these scattered storms is still in question. Keep the outdoor plans -- even Friday -- but have a place of shelter to get to quickly in case a downpour or storm pops up near you -- these can contain torrential downpours, lightning and gusty wind.

TONIGHT: Mainly cloudy with a couple of passing showers. Otherwise, dry, warm and very muggy. Lows will be in the lower to middle 70s into Thursday morning.

THURSDAY: HEAT ALERT -- Sun and clouds, warm to hot, breezy and uncomfortably humid. Highs around 86 degrees, but with the humidity it will feel like around 95 to 100 degrees. Take breaks from the heat. A pop-up shower or storm is possible throughout the day from time to time, but not a washout. Lows near 75 degrees.

FRIDAY: HEAT ALERT -- Take breaks from the heat and stay hydrated. Sun and clouds. Hot and very humid. Chance for a couple of showers and thunderstorms in the afternoon and evening. It will not be a washout. Keep any outdoor plans, but have a place to take shelter if a downpour or brief storm passes near you. Highs near 88 degrees, but with the humidity it will feel like around 95 to 103 degrees. Lows near 73 degrees.

SATURDAY: HEAT ALERT -- Sun and clouds. Warm to hot and uncomfortably humid. Take breaks from the heat and stay hydrated. Chance for a shower or thunderstorm in the afternoon and evening, but not a washout. Keep the outdoor plans. Highs around 87 degrees, but with the humidity it will feel like around 95 to 100 degrees. Lows near 74 degrees.

SUNDAY: HEAT ALERT -- Mostly sunny to partly cloudy. Hot and very humid. Take breaks from the heat. Chance for an isolated storm, but most, if not all, of Sunday will be dry. Highs around 88 degrees. Lows near 73 degrees.

MONDAY: Sun and clouds. Take breaks from the heat and stay hydrated. Small chance for a passing shower or storm. Highs around 87 degrees. Lows near 73 degrees.

TUESDAY: Sun and clouds. Chance for a shower or thunderstorm. Highs around 86 degrees. Lows near 72 degrees.