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Invest 99L Creating Life-Threatening Flash Flooding and Mud Slides

20 Oct 2016, 7:18 pm

While there is only a 50% chance that Invest 99L will become a tropical or subtropical cyclone over the next five days, time is quickly running out. A cold front that is currently moving across the eastern United States will absorb this area of low pressure by Friday.

As of Thursday evening, the broad area of low pressure was centered more than 200 miles east of the northwestern Bahamas, and was slowly moving northward. Data from a NOAA Hurricane Hunter plane indicated that the low does not have a well defined center, and the thunderstorm activity continues to be limited. This is due in large part of the upper level winds still too strong for tropical cyclone development.

There is still an opportunity for this system to become a subtropical, or tropical cyclone, before it merges with an approaching cold front well offshore of the United States east coast Friday night. Moisture from this system is causing locally heavy rains, along with life-threatening flash floods and mud slides over portions of Hispaniola.

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