text: On October 5 , an operationally unnamed subtropical storm which had gone unnoticed by the NHC was absorbed by a temperate frontal low , which was moving to the southeast over the Azores . The low pressure system gained a more concentrated circulation and lost its frontal structure after absorbing the subtropical storm .
simplified: On October 5 , a storm now known as the 2005 Azores subtropical storm was absorbed by another low pressure area .