I decided to compare the MetO "Low M" 1987 15 Oct 24:00 synoptic chart
(note re thread elsewhere here, not 16 Oct 00:00) to current GFS
prediction of the corresponding low just south of the 1987 projected
position.
The closest isobar spacing in 1987 is 90% of the closest spacing for
tomorrow morning. But comparing like-to-like spans northish and southish
of the low, Pembroke to Brest.
1987 8mB and 18mB
tomorrow 2.5mB and 6.5mB, 3 to 1 difference
central pressures 960mB and 995mB