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Fog, the tropics, snow maps, chilly Halloween, and the Long Island forecast:

- A Dense Fog Advisory is in effect for Long Island until 9:00 this morning (see 1st image).

- Hurricane Epsilon has started to weaken (maximum sustained winds of 110 mph) as the eye has filled in, and it will pass well east of Bermuda tonight into tomorrow morning while gradually weakening. It will eventually become an incredibly powerful north Atlantic extratropical storm.

- Here's the latest on the system in the western Caribbean that will b e moving across Cuba and towards the northern Bahamas: A trough of low pressure located over the western Caribbean Sea is producing a large area of disorganized showers and thunderstorms which primarily extend near Jamaica, the Cayman Islands, and Cuba. Development of this system is unlikely to occur during the next few days as it passes near western Cuba and moves over the Straits of Florida. By late this weekend or early next week, however, some slow development is possible while the system moves generally northeastward from near the northwestern Bahamas toward the western Atlantic. Regardless of development, locally heavy rainfall is possible over portions of Cuba, South Florida, and the Bahamas through early next week. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 5 days...low...20 percent.

- It still looks like a slight chance of another tropical system in the southern Caribbean in early November.

- Below normal temperatures are expected in the northeast at the end of the month into early November, and with it will come snow chances for northern New England. As for Halloween, it looks like a chilly one (see 6th image).

Long Island forecast:

Today (Thursday): Patchy fog and low clouds in the morning with a Dense Fog Advisory in effect until 9 AM. Then becoming partly cloudy in the afternoon, especially away from the south shore, with highs in the low 70's and light and variable winds.

Tomorrow (Friday): Morning fog and drizzle with a 20% chance of a shower, and then mostly cloudy in the afternoon with highs in the mid to upper 60's.

Saturday: More fog and drizzle possible again, and then varying amounts of clouds and sun in the afternoon with highs in the upper 60's to around 70 degrees. A dry cold front will come through at night.

Sunday: Partly cloudy and much cooler with highs in the mid to upper 50's.

Monday: Mostly cloudy with a 40% chance of some showers with highs in the mid 60's.

Tuesday: Cloudy with a 50% chance of some showers with highs in the mid 60's. 

- 1st image: Dense Fog Advisory

- 2nd image: Overview of the tropics

- 3rd image: Projected snowfall for the next 10 days from the Euro

- 4th image: Projected snowfall for the next 15 days from the Euro ensemble mean

- 5th image: Projected precipitation for the next 5 days from the Weather Prediction Center

- 6th image: Projected temperatures at 2 PM on Halloween from the Euro

- 7th image: Projected temperatures for Long Island for the next 10 days from the National Weather Service model blend

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