In the last week of September, a very large non-tropical system over the north-central Atlantic slowly moved westward away from the Azores. As it entered warmer waters, it slowly gained tropical characteristics and was declared Subtropical Storm Laura early on September 29. It became fully tropical the next day and was reclassified as Tropical Storm Laura. On October 1 it became "post-tropical" (in the forecaster's words) as it moved over cooler waters.