Thx Clark for the explaination.

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11pm TWO is out. They are still watching 92L for development, but they aren't expecting it.

Maria's down to a Tropical Storm.

Nate hasn't been upgraded yet, but I still expect it by morning.

16 hasn't been upgraded yet. By morning we will have a better idea of what she's doing. As for the cool air injection, tropical cyclones have a warm core. Extratropical cyclones have a cool core. I'm not sure whether a cool air injection would cause an cool core to form, but it's possible. If nothing else it might cause a hybrid system to develop over the near term..before it returns to a tropical characteristic. Others probably know better than I do what it would do

- it sounds like the NHC doesn't know what to do with 16...so they are sitting on it until morning when a different forcast team gets a shot