cieldumort
(Moderator)
Sun Sep 21 2008 05:08 PM
Attachment
West of Spain: Post-frontal Low Undergoing More Tropical Transition

Currently in the vicinity of 36N 15W

Very interesting feature. An extratropical low has lost most of its last remaining frontal connections. Traveling over 22-24 C sea surface temps and (had been) under very low shear, a slow tropical transition has been underway.

Both quikscat and windsat passes from very early this morning (around 0700 UTC) show at that time a very symmetric surface low was already present, with the strongest winds closest to the center.

Some may recall Hurricane Vince (2005), which made landfall in a similar location as the very first officiated tropical cyclone on record to do so there.

Uploaded this early morning's windsat pass and a more recent (1800 UTC) Visible satellite image.