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| June 2002 monthly assessment issued 2 July
2002 |
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Monthly summaries available for: England
and Wales | Scotland | Northern
Ireland
Homogenous time series based upon selected station data:
CET | England and Wales
rainfall
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| Rather unsettled first half with some
thundery rain at times. Changeable and cool at times but
mainly dry second half. |
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Diary of highlights
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1st - 4th A dry sunny start to the month and
hot in many places on the 2nd with Jersey climbing to 28
°C. However, thundery rain affected north-west areas,
while scattered showers broke out in the south-east
later. A cold front on the 3rd brought cooler conditions
and thundery showers, some accompanied by hail. Although
mainly dry on the 4th, occasional showers affected the
north-west.
5th - 11th Mostly unsettled as
low pressure hovered nearby. Overnight on the 4th/5th
thunderstorms and heavy rain affected south-east England
and East Anglia. Hook (Surrey) and Morden (Greater
London) both received 42 mm of rain. The next few days
saw variable winds, patchy mist and fog and scattered
outbreaks of rain, sometimes thundery. From the 9th to
the 11th a rather cool showery south-westerly airstream
covered the region; some showers were heavy and
thundery. Mumbles, near Swansea, reported a gust of 54
knots on the 10th.
12th - 17th Generally
changeable with the south-east coming off best near to
high pressure on the continent. The period started
chilly and cloudy with some heavy thundery rain in the
north-west on the 13th. Thundery rain also affected
northern England on the 14th, and later in the day in
south-east England. Conditions became brighter and very
warm or hot later with 29 °C being reached over the
south-east and East Anglia on the 17th. That same day a
weak cold front edged eastwards clearing away hill and
coastal fog which had been residing around west and
south-west parts.
18th - 21st After some
thunderstorms in the south-east early on the 18th it
became mainly sunny and dry but with some slight rain on
the 21st. Most places had temperatures near or rather
above normal especially in the south-east.
22nd -
26th Mostly settled and dry with plenty of sunshine
under the influence of a ridge of high pressure
stretching from the Azores. The south-east and East
Anglia had the highest temperatures where it was rather
warm at times. A cold front brought some rain into
northern districts on the 26th.
27th - 30th
Low pressure over Scandinavia fed cool north-westerly
winds over the region, bringing good sunny periods and
dry weather for the most part but with some showers in
north-east and central England on the 27th. The last day
saw Atlantic fronts bringing patchy rain eastwards, and
some heavier pulses around Snowdonia and
Cumbria.
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| Statistical details (using best available
data/estimates): updated 2003 |
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England & Wales Mean Temperature Series ( series
began in 1961 ). The final value for the month was 13.9 °C, which
is 0.4 °C above the 1961-1990 average, which is in the close to average category.
England & Wales Rainfall Series ( series began
in 1961 ). The final total for the month was 57.4 mm, which is 90 % of the
1961-1990 average, which is in the close to average category.
England & Wales Sunshine Series ( series began
in 1961 ). The final total for the month was 163.6 hours, which is 88 %
of the 1961-1990 average, which is in the below average
category.
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| Scotland |
| Unsettled, with predominately
south-westerly winds, bringing cloud and rain to the
south-west, but fair weather to the Northern Isles. |
| Diary of Highlights |
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Apart from a brief interlude at the beginning of the
month, low pressure to the west of Scotland maintained
an unsettled and changeable regime throughout June.
During the first half of the month, winds blew mainly
between south-west and south-east, but later on
south-westerlies dominated, with a brief spell of
north-westerlies occurring towards the end.
Showery weather prevailed, and there was a
marked contrast between the south-west, which bore the
brunt of the showers, and districts to the north and
east, particularly the Northern Isles. Here it was warm
and sunny, while Glasgow, Prestwick and Eskdalemuir
experienced only 4 days without measurable rain. This is
probably a record, beating by one day the events of June
1972.
From the 5th to the 7th, the centre of low
pressure shifted towards the English Channel, and warm
easterly winds covered Scotland. Many places in the
north and north-west enjoyed a fine spell, with the
temperature at Lochcarron reaching 27.6 °C on the 6th.
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Statistical details (using
best available data/estimates): updated 2003
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Scotland Mean Temperature Series (
series began in 1961 ). The final value for the month was 11.9 °C, which
is 0.8 °C above the 1961-1990 average, which is in the above average category. Warmest since 1992, when 13.0 °C was recorded.
Scotland Rainfall Series ( series began in 1961
). The final total for the month was 136.8 mm, which is 159 % of the
1961-1990 average, which is in the well above average category. Wettest in the series, previous wettest being 1966 with 134.7 mm.
Scotland Sunshine Series ( series began in 1961
). The final total for the month was 129.3 hours, which is 81 %
of the 1961-1990 average, which is in the below average
category.
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| Northern
Ireland |
| Wet and dull. Unsettled conditions made this a wet and dull
June in all areas of the province. Conditions by day were also
cool, with daily maximum temperatures below normal in all
areas, however by night minimum temperatures proved very mild. |
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Diary of Highlights
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1st to 8th Unsettled with bands of rain
closely pursued by showers and sunny spells. Conditions
were however cool from 2nd to 4th, with daily maximum
temperatures struggling to exceed 13 °C in many areas on
the 4th. The 4th also saw the lowest night-time minimum
temperatures of the month, with values falling as low as
3 °C in parts of Fermanagh. The 3rd and 5th were very
sunny days in most parts while in contrast the 7th and
8th were dull in many locations.
9th to
13th Unsettled and cool with below normal
temperatures. The 13th proved the wettest day of the
month in most locations, with up to 25 mm of rainfall
recorded in some parts on this date alone.
14th to 22nd Generally unsettled. The
14th proved the warmest day of the month in all areas of
the province, with daily maximum temperatures reaching
highs of about 21 °C in parts of Down and Londonderry.
Temperatures then fell below normal on the 16th and this
also proved a dull day across the province. In contrast
daily sunshine values reached double figures in many
parts on the 17th, 18th and 20th. Thunderstorms and
heavy downpours gave as much as 20 mm of rainfall in
parts of Belfast between early evening on the 21st and
mid morning on the 22nd, leading to flooding problems in
the Greater Belfast area.
23rd to 28th
Changeable with scattered showers and sunny spells. Many
areas did however escape these showers making this the
driest spell of the month in most parts. Daily maximum
temperatures fell below average for the time of year on
all dates but the 25th. The 23rd, 25th and 27th were the
sunniest days during this spell, however measurable
sunshine was recorded on all dates.
29th to
30th Cool and unsettled with bands of often heavy
rainfall and little sunshine.
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Statistical details (using
best available data/estimates): updated 2003
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Northern Ireland Mean Temperature Series ( series
began in 1961 ). The final value for the month was 12.8 °C, which
is 0.4 °C above the 1961-1990 average, which is in the close to average category.
Northern Ireland Rainfall Series ( series began
in 1961 ). The final total for the month was 119.5 mm, which is 163 % of the
1961-1990 average, which is in the well above average category. Wettest since 1990, when 126.2 mm was recorded.
Northern Ireland Sunshine Series ( series began
in 1961 ). The final total for the month was 122.8 hours, which is 77 %
of the 1961-1990 average, which is in the well below average
category.
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Homogeneous series based upon selected station data: updated
2003 |
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Central England Temperature (series begins in 1659). The mean value for the month was 14.4°C which is 0.2 °C above the 1961-90 normal of 14.2 °C
and is in the close to average category. Others:- 2001/14.3,
2000/15.1, 1999/13.9, 1998/14.2, 1997/14.1 °C.
England and Wales Rainfall (series begins in 1766). The total for the month was 56.6 mm, which is 87
% of the 1961-90 average and is in the close to average
category. Others:- 2001/44.4, 2000/43.0, 1999/90.9, 1998/121.4,
1997/132.2, 1996/29.6 mm.
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| Note: Diary values are provisional based
on data available at the time. |
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