 The fifth known storm of the year was yet another cyclone first identified in post @-@ season reanalysis . Forming on September 18 well to the north of Puerto Rico , efforts made to piece together wind observations from ships reveal a track that curved toward the northwest , passing about midway between the U.S. East Coast and Bermuda before heading northeast . Based on available information , the cyclone is estimated to have remained at tropical storm intensity for its entire existence . It is last noted southeast of New England on September 21 . 
