On Jan 25, 7:42*pm, Martin Rowley
wrote:
... the Exeter/EGRR PROG VT 26/1200Z here ...

http://bethyngalw.nowster.me.uk/charts/UKCpf024.png
[accessed 25/1935Z]

has central pressure in mid-North Atlantic down to 928 mbar. We'd have
to get down to the realms of 916-ish mbar for 'record-breakers', but
anything below 930 is still in the 'interesting' category: I don't have
a detailed database of these, but Stephen Burt who has made an extensive
study of such has noted a similar figure (i.e. 928 mbar) in March of
2003 (8th).

It is a *forecast* of course so it will be interesting to see what the
actual value comes out as. Sometimes the models over-cook these things
for various reasons - the UK NAE used to have a latent-heat exchange
problem in this respect but not sure if this is still the case.

Martin.

--
West Moors / East Dorset
Lat: 50deg 49.25'N, Long: 01deg 53.05'W
Height (amsl): 17 m (56 feet)
COL category: C1 overall

Using George's rule, Martin, with today's midday 500mb data to the
east of Newfoundland from the Uni of Wyoming site, the maximum
deepening I could get from the nomogram was 35mb in the next 24 hours.
The UK Met.O 1200Z synoptic had the central pressure at 967mb, so this
would give 932mb for 1200Z Saturday.

Dick Lovett