ORLANDO, Fla. — Meteorologists are monitoring two tropical depressions and two other systems in the Atlantic. Read updates below:

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11:30 p.m. update

Tropical Depression 18 is expected to “take its time” crossing the tropical Atlantic, the National Hurricane Center said.

5:20 p.m. update

Tropical Depression 18

Tropical Depression 18 has formed and is forecast to become Sam soon and have major hurricane status by day five of the forecast cone, Channel 9 meteorologist George Waldenberger said.

Forecast models have been indicating a path curving back out to sea, Waldenberger said, but it’s too early to be certain, especially with a track that could still come close to some Caribbean islands.

11 a.m. update

Tropical Depression Peter

Tropical Depression Peter is barley hanging on as a tropical cyclone, the National Hurricane Center said.

The storm is forecast to continue moving away from the Virgin Islands and Puerto Rico.

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Gradual weakening is expected during the next couple of days.

Forecasters said Peter is expected to degenerate into a low-pressure remnant on Thursday.

Tropical Depression Rose

Tropical Depression Rose is remaining disorganized while it moves over the eastern Atlantic, forecasters said.

Forecasters said Rose is expected to degenerate into a low-pressure remnant by Friday night or Saturday.

2 other systems

Forecasters said a system located several hundred miles southwest of the Cabo Verde Islands is becoming better organized.

A tropical depression is expected to form within a day or two.

The system has a 90% chance of developing over the next 48 hours.

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A gale-force, nontropical low pressure system, the remnants of Hurricane Odette, is located about 500 miles west of the westernmost Azores.

Forecasters said the low could acquire some subtropical characteristics over marginally warm waters during the next few days.

However, by the weekend, this system is expected to move into an environment of strong upper-level winds.

The system has a 50% chance of developing over the next five days.

5 a.m. update

Tropical Depression Peter

Tropical Depression Peter remains poorly organized.

The storm is forecast to continue to move away from the Virgin Islands and Puerto Rico.

The storm’s winds are near 35 mph, with higher gusts.

Forecasters said Peter is expected to degenerate into a low-pressure remnant on Thursday.

Tropical Depression Rose

Tropical Depression Rose also remains disorganized.

The depression’s winds are near 35 mph, with higher gusts.

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Forecasters said Rose is expected to degenerate into a low-pressure remnant by Friday night.

2 other systems

Meteorologists are also watching two systems in the Atlantic.

The first is located several hundred miles southwest of the Cabo Verde Islands.

Showers and thunderstorms are becoming better organized.

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A tropical depression is likely to form in a day or two while the system moves across the Atlantic Ocean, forecasters said.

The system has an 80% chance of developing over the next 48 hours.

A gale-force, nontropical low pressure system, the remnants of Hurricane Odette, is located about 500 miles west of the westernmost Azores.

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Forecasters said the low could acquire some subtropical characteristics over marginally warm waters during the next few days.

However, by the weekend, this system is expected to move into an environment of strong upper-level winds.

The system has a 50% chance of developing over the next five days.

WFTV Hurricane Special: "Calm Before the Storm" WFTV Hurricane Special: "Calm Before the Storm" (WFTV)

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