large area of associated thunderstorms. The wave interacted with a stalled frontal boundary, developing a broad circulation by October 13 to the northeast of the Bahamas. A day later, the system developed into a subtropical storm – its classification was because the system was co-located with a trough. There was another area of convection along the front northeast of the subtropical storm, which accelerated northeastward. Meanwhile, the subtropical storm turned westward. It had a small circulation with thunderstorms sheared north of the center, which gradually became more organized. On October 17, an approaching front turned the storm northward and later northeastward. On the same day, the subtropical storm transitioned into a tropical cyclone. On the next day, the storm attained peak winds of , before it transitioned into an extratropical cyclone. The storm later moved over Atlantic Canada and was ultimately absorbed by the cold front on October 19. Hurricane Heidi An area of convection persisted on October 16 between the Lesser Antilles and Cabo Verde. It moved west-northwestward for several days, developing into Tropical Depression Twenty-Two on October 19 about northeast of the Lesser Antilles. The S.S. Sunrana moved through the storm on October 20, reporting winds of . At the time, the system was not named due to the lack of a warm thermal core, although it was later assessed as a tropical storm as of 18:00 UTC that day. On October 21, the Hurricane Hunters observed a weak circulation with winds of only . At the same time, the storm was located along the edge of a baroclinic zone, which limited strengthening. Curving northeastward due to an approaching trough, the storm intensified more on October 22, as a ship reported winds of . That day, data from the Hurricane Hunters observed a warm core, and the NHC classified the system as Tropical Storm Heidi. The storm was more of a hybrid storm initially, with the strongest winds near the center, spurring gale warnings for Bermuda. However, winds there only reached about during the storm's passage. The NHC initially anticipated that Heidi would become extratropical within two days. Early on October 23, the agency upgraded the storm to hurricane status about 105 mi (175 mi) southeast of Bermuda. Heidi moved quickly eastward with the approaching trough until October 25, when a building ridge caused the hurricane to move slowly northeastward in an area of light wind shear. Early