I am following climate activist Greta Thunberg's sail to N America from Europe on https://tracker.borisherrmannracing.com/. The model shows a cyclonic storm forming south of Nova Scotia, east of New York on August 26, 2019. The same thing can be seen on https://earth.nullschool.net/. I wasn't aware that this type of storm formed so far north and am wondering why this storm is forming and if this is a rare occurrence that may be related to climate change.
Edit to add: Here is the model of air temperature. It appears to me that the storm forms at the interface between cool air from the north and warm air from the south and that the core is warm, but perhaps someone with more expertise can weigh in.