But in the center's 11 a.m. advisory, that system jumped to name status: Tropical Storm Kirk.
Tropical Storm Kirk was located 425 miles SSW of the southernmost Cabo Verde Islands.
Forecasters said Kirk had maximum sustained winds of 40 miles per hour and tropical storm-force winds extending to 70 miles from the centre. Weakening is likely during the middle to latter part of the week. Kirk has hit warp speed today, now moving at 23 miles per hour.
Finally, a non-tropical low pressure system is forming about 900 miles west-southwest of the Azores.
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Tropical Storm Kirk keeps rolling toward the Caribbean, newly named Subtropical Storm Leslie is spinning in the Atlantic and hurricane center forecasters are keeping an eye on an area of disturbed weather off Florida's coast between the Bahamas and Bermuda that could move toward the southeastern US later this week.
"The latter models suggest that Kirk could open up into a trough when it nears the Caribbean", according to a discussion of Kirk at 11 a.m.
Graphic illustration of Tropical Storm Kirk as at September 23, 2018. Leslie is not expected to hang around for very long - a new low, one that could become a named storm itself - is forecast to develop north of Leslie and absorb the storm.
Kirk is expected to speed up through the weekend but will not impact land for several days, allowing those potentially in its track plenty of time to prepare. The depression had been approaching the Lesser Antilles but thanks to hostile winds only a cyclonic wisp of clouds remained. That disturbance constitutes the remnants of Hurricane Florence, which saturated the Carolinas with rain and wind last week.