The Azores high (1024 mbar) was in its normal position, slightly
more intense than average, with some ridging evident towards
Ireland. The Icelandic low was not prominent, the main centre
displaced to Quebec (1010 mbar) and there was also an
anomalous low centred over northwest Russia (1010 mbar).
Pressure was also relatively low over much of southern Europe
and the Mediterranean, while high pressure (1022+ mbar) sat
over the Arctic basin.

The maps are now on www.climate-uk.com

The main anomaly centres we
-6mbar NW Russia
-4 mbar Quebec
-2 mbar Algeria
+4 mbar southwest of Ireland
+4 mbar Arctic basin

Over the British Isles, pressure was 0.5 to 3 mbar above
the 1961-90 mean in all areas with a weakly northerly
anomalous flow. (It is interesting to note that the
pressure anomalies were rather different, between
1 mbar below and 1.5 mbar above, when compared
with the 1971-2000 mean).

Indices (all provisional):
CET 12.2ºC +0.9 degC
E&W RR 50.9mm 83%
E&W sun 217.1h 108%

CScotT 11.3ºC +1.4
CScotRR 34.8 66%
CScot sun 189.9h 104%

NIT 11.0ºC +0.7
NIRR 36.6 69%
NI sun 199.7 102%

Sunniest May locally in Cornwall and Devon since
1989 with several sites recording 300h.

Philip Eden
(daily obs and monthly summary for May for
Luton, Hampstead and Milhaguet are now on
www.weather-uk.com )