Mean sea-level pressure over the British Isles was almost
uniform during June 2009. Easterlies and northeasterlies
blew throughout the first ten days and the last week, while
westerlies prevailed during the middle segment. Nevertheless
it was the seventh most 'easterly' June in 137 years of
records, although it ranked just behind June 2007.

Mean pressure charts have already been uploaded to:
Charts: http://www.climate-uk.com/monpre/0906.htm
The Monthly Review has also already been made available at:
http://www.climate-uk.com/monthly/0906.htm
Graphs: http://www.climate-uk.com/graphs/0906.htm and
http://www.climate-uk.com/graphs/200906.htm
Not The Long Range Forecast should be available by Jul 4 on:
http://www.climate-uk.com/page4.html

The sea-level pressure is highly abnormal, with no Icelandic
Low and no real Azores High. There is a shallow area of
low pressure mid-Atlantic centred 1013mbar at 49N 24W,
and pressure is also low over eastern Europe, the Russian
Arctic, and Quebec. Highest pressure, 1021mbar, lays
over Greenland, with a flat ridge extending across Iceland to
the UK. There is a hint of a N-NE gradient over eastern
Britain, and a SE gradient over western Britain and Ireland.

The sea-level pressure anomaly field is much more clear-cut.
Pressure is above normal in the Atlantic/Europe sector
everywhere north of latitude 50-55degN, and below normal
south of that zone. The anomalous gradient is therefore
E-NEly over much of the region - strongly so over the
Atlantic between the 50th and 60th parallels.

The main anomaly centres we
+9mbar in Denmark Strait
- 7mbar north of the Azores.

Over the British Isles pressure anomaly ranged from +5mbar
in Shetland and the Isle of Lewis to -1mbar in SW Ireland,
Cornwall, and the Channel Islands. The anomalous gradient
over the UK is markedly easterly.

CET (after Manley) 14.92°C (0.8degC above the 1971-2000 mean)
CET (after Hadley) 14.9 or 15.0°C (0.8 or 0.9degC above)
E&W Rain (provisional): 54.1mm ( 79% of 1971-2000 mean)
E&W Sunshine (prov): 218.1hr (115% of 1971-2000 mean)

It was warmer than June 2008 but less warm than June 2007.
Over England Wales as a whole it was the driest and sunniest
June for three years.

CScotT: 13.4°C (+0.6degC)
ScotRain: 48mm ( 80 %)
ScotSun: 222hr (126 %)

NIT: 13.8°C (+0.7degC)
NI Rain: 59mm ( 97 %)
NI Sun: 263hr (143 %)

Rainfall totals ranged from 146mm at Winterbourne (Birmingham)
to just 18mm at St Peter Port (Guernsey)

Percentages ranged from 207 at Winterbourne to
27 at Cardinham (Cornwall)

Sunshine totals ranged from 300h at Fair Isle (between Orkney
and Shetland) to 134h at Eskdalemuir (Dumfriesshire) and
138h at Dyce (Aberdeenshire)

Percentages ranged from 191 at Fair Isle to 81 at Watnall (Notts)
[usual caveat about change in sunshine recorders applies]

(c) Philip Eden