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| Often Dry but Rather CloudyBy Matt Hugo - March 18, 2015. | |
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| Tweet Topic Started: 18 Mar 2015, 07:25 PM (35 Views) | |
| Audi-Tek | 18 Mar 2015, 07:25 PM Post #1 |
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Often Dry but Rather CloudyBy Matt Hugo - March 18, 2015.![]() OVERVIEW: Throughout the rest of the week it will be high pressure that is generally the dominant feature of the weather and this, as a result, will maintain predominantly fine and settled conditions. However, as the term is so-called there will be a lot of cloud beneath the high pressure rather than clear skies and hence it will be a ‘dirty high’. Conditions for the eclipse on Friday remain somewhat uncertain but a lot of cloud is likely across the UK on Friday morning despite some breaks in places. ANALYSIS: ![]() 1) This is a ridge of high pressure that is building into the UK both at the surface and within the upper atmosphere and it is this feature that is bringing the fine and settled conditions to many areas today and with some bright or sunny spells too, particularly when compared with the first half of the week. 2) This is a small area of low pressure that has cleared away into the North Sea overnight and it is this feature that brought the rain and showers to parts of the UK on Tuesday. 3) This is a large area of low pressure within the western portion of the North Atlantic. The high pressure over and just to the west of the UK is helping to keep low pressure systems at bay. However, one such low pressure, albeit weak, will move over the top of the high pressure to end the week to complicate the forecast for Friday. WEDNESDAY NIGHT and THURSDAY: With high pressure dominating the weather then throughout Wednesday night and on into Thursday many areas will be dry with clear spells tonight leading to some frost and fog, but equally further areas of low cloud will be in evidence. This cloud will make the difference between milder conditions by night, but equally cooler conditions by day on Thursday given a lack of sunshine. This setup has been in evidence all week and will continue throughout the next few days. So, Wednesday night is set fair nationwide with clear spells and regions of cloud. At the moment it is most likely that eastern areas of the UK will see most of the cloud, whilst further west cloud breaks are likely to be more widespread. This is highlighted well on the below temperature chart for early Thursday given that more western areas of the UK are clearly colder than further east where cloud will keep temperatures more significantly above freezing. ![]() As we move on into Thursday a rather chilly NE’ly wind will develop across the far south-east of England. This, as a result, will signal the threat of a lot of low cloud moving into E England, E Anglia and SE England throughout Thursday and this will hold temperatures down here. Equally weak weather fronts will move across the far north of Scotland during the day and this will also increase cloud here with some patchy rain or drizzle possible. In-between, across most of Ireland, Wales, N England, Midlands and SW England Thursday is set fair and it is across these areas that most of the sunshine will be and also the highest temperatures. Note on the image below the 3KM model picks up the patchy rain across parts of Scotland and I’ve highlighted on the image the area that will see the best of any bright or sunny spells tomorrow. The temperature chart (right image) really does help to highlight which areas will be cloudy through Thursday and note the depressed temperatures across SE England in comparison to further north and west, but then the lower temperatures across Scotland given the cloud and patchy rain here. ![]() FRIDAY: Friday is likely to start quite chilly in a few places with perhaps some frost and fog patches. However, emphasis on Friday is for a weak area of low pressure to move across the north of the UK and with its associated weather fronts, albeit weak, moving southwards through the day. So, the best chance to see the eclipse on Friday morning is likely to be across more southern and western areas of the UK at the moment, whilst further north and east it is cloudier. Some patchy rain and scattered showers may develop across Scotland and NE England through the day, but otherwise the ‘story’ is the same in that the week ends predominantly dry with some bright or sunny spells in places, but equally there will be a lot of cloud around too. The 10KM model highlights the risk of some patchy rain or showers in the north but note that away from Scotland it will be another quite mild day on Friday with maximum temperatures widely into double figures. ![]() Chief Forecaster: MH Source Info: eumetrain.o Link .................... http://www.ukweatherforecast.co.uk/often-dry-but-rather-cloudy/#sthash.yP5i9URn.dpuf Source ................
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9:39 AM Jul 11