(11 p.m.) Hurricane Matthew has strengthened in a moist atmosphere and little to no shear. It is now a Category 5 hurricane with winds of 160 mph.

The last time there was a Category 5 in the Atlantic basin was Hurricane Felix in 2007.

The storm is 440 miles southeast of Kingston, Jamaica, moving west at seven miles per hour.

There will be some fluctuations in strength over the next 24 hours.  After that, some shear is likely to impact Matthew.

Matthew is strong and well organized as it continues moving slowly westward through the Caribbean. It will slow down and even move a little south of due west over the next 24 hours.

However, it will make a turn to the north in a couple days. Jamaica, Haiti to eastern Cuba will likely be strongly affected by Matthew starting Sunday night. The Turks and Caicos and the Bahamas will likely be affected starting early Tuesday.

The eastern side of Florida (Space Coast) could potentially see some outer rain bands, gusty winds, high surf, and rip currents, possibly starting Tuesday night.  If Matthew stays well east, these will be minor impacts, but if Matthew just slightly nudges westward they could become bigger impacts.

As Matthew moves north, the Tampa bay area may see increased winds maybe from Tuesday into Thursday or longer, depending on where Matthew will be.

Once Matthew moves northeast of Florida, drier air is likely get pushed back in from the north.  Rain chances are likely to lower by the end of the week.

Make sure to watch our Tropical Updates each hour at :49.

What exactly are the spaghetti plots?
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Remember that the spaghetti model plot does not indicate the strength of a system or even development at all. It only predicts where this broad area of low pressure is expected to go.