June gets off to a wet, windy start with thunderstorms
Thunderstorms are set to rumble on across North Wales with forecasters predicting the region is likely to get wetter and windier as June starts.
Torrential rain, thunder and lightning will continue to pose a threat over the next few days but there will also be sunny spells as the warm and humid conditions continue.
A yellow weather warning for rain is in force across all of North Wales until 9am today with the Met Office warning that up to 80mm of rain could batter the region in just three hours overnight.
Today marks the first day of the meteorological summer and the milestone will be greeted by more thunderstorms.
There is still a risk of scattered heavy showers, but these will diminish over the weekend, with any thunder activity confined to the north, according to The Weather Channel.
There will also be plenty of fine weather with most areas enjoying brighter sp ells but eastern coastal areas could have temperatures subdued by cloud cover.
Settled conditions should linger beyond the weekend, with the best of the sunshine in the north-west.
Andy Page, Met Office chief meteorologist, said: âIt is expected that the storms will merge together to produce a larger more persistent area of thunderstorms over parts of the South West, central southern England and the southern half of Wales. 30-40 mm of rain is possible in an hour here with a good chance as much as 60-80 mm rain could fall within 2-3 hours in some places. As well as this, frequent lightning and large hail are possibleâ.
âThis could result in flash flooding, transport delays and dangerous driving conditions, especially on the M4 and M5.
âWeâd advise anyone with outdoor plans over the next few days to keep updated with the forecast and warnings, and consider their plans if the risk of thunderstorms or heavy rain may affect themâ.
Further a head, into June, there will be little change in the early part of the month.
Long-range forecasts show high pressure remaining to the east or north-east of the UK and a weak jet stream will fail to shift the dominant high pressure.
Some computer models show the jet stream gaining strength and it could start to pack a punch by the middle of the month pushing windier and wetter over north and western regions.
Low pressure from the Atlantic will then lure more changeable weather and westerly winds across these parts of the country.
This would be quite a change from May and early June, when high pressure over Scandinavia blocked any blustery showers arriving from the Atlantic.Video Loading Click to play Tap to play The video will start in 8Cancel Play now
Beyond mid-m onth, and especially heading through the final third, the most likely outcome is for further extensive high pressure areas to return, particularly over the southern half of the UK.
The risk of scattered heavy showers and thunderstorms is expected to diminish over the weekend, with any activity being restricted to northern Britain.
Away from the thunderstorms, there will be plenty of fine weather with most areas seeing some sunshine over the next few days, although low cloud could continue to affect the eastern coastal areas.
Beyond the weekend, there will be a good deal of fine weather around, with the best of the sunshine in the west.
A long forecast from the Met Office for June 5 to June 14 said: âBoth Tuesday and Wednesday should see a good deal of fine weather, wit h the best of the sunshine in the west and northwest. There is always a risk of scattered heavy showers and thunderstorms could affect southern and western parts at times, but there will be some dry and bright weather here too.
âIt will be warmest in the west, but cooler along North Sea coasts, with some mist and fog lingering here. These conditions are likely to last through the weekend, but as we move towards the middle of the month the forecast becomes much more uncertain. There may still be plenty of fine weather and warm spells, but more changeable weather with showers or longer spells of rain could become more frequent and widespread at times.â
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