In uk.sci.weather on Sat, 20 Dec 2003 at 13:29:28, Philip Eden wrote :
Nowhere near the track of the warm-front wave, but the pressure
changes in the London area have been notable ... possibly (i.e. from
memory) the most rapid since the gale in October 2002:

Hampstead AWS (137m)
HH ppp tendency/3h
00 1018.5
01 1018.1
02 1017.4
03 1016.8 -1.7
04 1015.6 -2.5
05 1014.2 -3.2
06 1013.0 -3.8
07 1011.6 -4.0
08 1009.7 -4.5
09 1008.3 -4.7
10 1005.5 -6.1
11 1002.9 -6.8
12 999.8 -8.5
13 997.4 -8.1

It fell 20mb in the 8 hours from 4am, here.
--
Paul Hyett, Cheltenham

Email to pahyett[AT]activist[DOT]demon[DOT]co[DOT]uk