Weekly look back and ahead Monday 12th to Sunday 18th August 2013
Entry posted by TonyH
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[b]The week gone was mixed[/b][/size][/font]
[font=arial][size=3]The low pressure at the start of the week gave some large rainfall totals over Wales and parts of the West Midlands. In the 48 hours up to Monday evening Mumbles near Swansea had a massive 76mm (3 inches), while Hereford had 45.2mm. Monday was the coolest day at Llanwnnen since July 3rd with a cool high of just 17.7c, although the Midlands had a warmer day. Some pleasant weather after all the rain, it became quite warm with sunny spells, highest readings of the week being 22 to 24c. However there were some chilly August nights, down to 7 to 9c on a couple of nights. Funnel clouds were photographed on Wednesday afternoon, these spawned by a scattering of heavy downpours, one was observed near Brecon, and one from Cross Hands, Carmarthenshire. A funnel cloud would become a tornado if it reached the ground but these apparently did not. Tirabad, in the Cambrian hills of SW Powys, received 37mm in just 3 hours from these downpours on Wednesday, while villages just a few miles away had next to no rain. Generally though, most of us have only seen very small amounts of rain since Monday's deluges, little more than a millimetre at Coventry, for example, during these past 5 days.[/size][/font]
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[b]The week ahead: Changeable; dry and bright at times, some rain at times, near average temperatures[/b][/size][/font]
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High pressure is close enough to our south most of this coming week to weaken the fronts set to cross the UK from time to time, a generally westerly airstream, with temperatures close to the August averages, so expect highs between 18 and 23c most days, highest over the Midlands. Sunny intervals and just a few scattered showers on Sunday afternoon, highs of 18 to 21c with any showers largely dying out tonight, just a few may continue along some Welsh coasts, quite chilly down to 8 to 12c, A rather cool and showery NW flow on Monday, showers heavy in places, hail a possibility, but with some areas missing them as is usual in such set ups, some pleasant sunny intervals too, highs ranging from 17 or 18c for West Wales to 20c for the Midlands. Another cool night follows as clear spells develop, down to 7c in places but milder for West Wales coasts, nearer 12c here. A weak ridge of high pressure exerts from our SW for Tuesday but with a weak front within it producing quite a bit of cloud cover, even the odd light shower in places. Some sunny intervals on Tuesday, highs 19c for West Wales and 21c for the Midlands, so a touch warmer. [/size][/font]
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On Wednesday a band of high pressure lies tantalisingly close to southern UK, but perhaps not quite close enough for a fine day everywhere! The Midlands most likely to manage a dry day with sunny spells on Wednesday, while weak fronts move into Wales in the afternoon threatening some rain and drizzle here, more especially later in the day. Warm with the sunny breaks for the Midlands up to 22c, but only 19c at best for cloudier West Wales. Mild SW winds and cloud for Wednesday night temperatures falling no lower than 14c. High pressure has slipped off into the Continent by Thursday, with a trough of low pressure erratically crossing the UK, bringing spells of rain, some heavy bursts in the west, although the Midlands could manage a dry morning. A rather warm, humid airmass for Thursday with SW winds, plenty of cloud but also a few sunny intervals which would readily lift temperatures to 23c, but more generally 19 or 20c where damp/ wet. Another mild night to follow with futher rain or showers in places, minima around 14c. [/size][/font]
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Friday, and the uncertainties magnify as tends to be the case, however strong suggestions that another ridge follows the trough, so the hope at least of a fine, bright and fairly warm day! Just bear in mind that in this rather mobile Atlantic set up timings can be out at this forecasting range, and the ridge could be chased off by another trough through Friday bringing some more rain, especially to Wales, or in another synoptic evolution the ridge gets flattened off leaving a rather cloudy disappointing day with spits of rain. Next weekend and the changeable theme continues, a deep low pressure is close to Iceland with a fairly strong SW to westerly flow over the UK. Bands of rain but with dry spells between, and prospects of large amounts of rain remain low.. sprinkles rather than downpours for most then, and with temperatures continuing around the average.[/size][/font][font=arial][size=3]
[attachment=181490:PPVG89 r cool showery Mon.png][attachment=181491:h850t850eu r cool showery Mon.png][attachment=181492:ecmt850.072 R m dry Tue to Wed.png][attachment=181501:h850t850eu wk R m dry Tue.png][attachment=181493:PPVL89 warm dry Mids little rain pm WW.png][attachment=181494:PPVO89 rain at times Thu esp WW.png][attachment=181495:metslp.120 rain from W Thu.png][attachment=181496:ecmt850.120 Tr to Wales Thu rain at times all.png][attachment=181497:ecmt850.168 DL SE Ice windy some rain weekend.png][attachment=181499:t850Warwickshire.png][attachment=181498:prcpAbertawe~-~Swansea small amounts rain this week.png][attachment=181500:mgram_Birmingham.png][/size][/font]
[b]The week gone was mixed[/b][/size][/font]
[font=arial][size=3]The low pressure at the start of the week gave some large rainfall totals over Wales and parts of the West Midlands. In the 48 hours up to Monday evening Mumbles near Swansea had a massive 76mm (3 inches), while Hereford had 45.2mm. Monday was the coolest day at Llanwnnen since July 3rd with a cool high of just 17.7c, although the Midlands had a warmer day. Some pleasant weather after all the rain, it became quite warm with sunny spells, highest readings of the week being 22 to 24c. However there were some chilly August nights, down to 7 to 9c on a couple of nights. Funnel clouds were photographed on Wednesday afternoon, these spawned by a scattering of heavy downpours, one was observed near Brecon, and one from Cross Hands, Carmarthenshire. A funnel cloud would become a tornado if it reached the ground but these apparently did not. Tirabad, in the Cambrian hills of SW Powys, received 37mm in just 3 hours from these downpours on Wednesday, while villages just a few miles away had next to no rain. Generally though, most of us have only seen very small amounts of rain since Monday's deluges, little more than a millimetre at Coventry, for example, during these past 5 days.[/size][/font]
[font=arial][size=3]
[b]The week ahead: Changeable; dry and bright at times, some rain at times, near average temperatures[/b][/size][/font]
[font=arial][size=3]
High pressure is close enough to our south most of this coming week to weaken the fronts set to cross the UK from time to time, a generally westerly airstream, with temperatures close to the August averages, so expect highs between 18 and 23c most days, highest over the Midlands. Sunny intervals and just a few scattered showers on Sunday afternoon, highs of 18 to 21c with any showers largely dying out tonight, just a few may continue along some Welsh coasts, quite chilly down to 8 to 12c, A rather cool and showery NW flow on Monday, showers heavy in places, hail a possibility, but with some areas missing them as is usual in such set ups, some pleasant sunny intervals too, highs ranging from 17 or 18c for West Wales to 20c for the Midlands. Another cool night follows as clear spells develop, down to 7c in places but milder for West Wales coasts, nearer 12c here. A weak ridge of high pressure exerts from our SW for Tuesday but with a weak front within it producing quite a bit of cloud cover, even the odd light shower in places. Some sunny intervals on Tuesday, highs 19c for West Wales and 21c for the Midlands, so a touch warmer. [/size][/font]
[font=arial][size=3]
On Wednesday a band of high pressure lies tantalisingly close to southern UK, but perhaps not quite close enough for a fine day everywhere! The Midlands most likely to manage a dry day with sunny spells on Wednesday, while weak fronts move into Wales in the afternoon threatening some rain and drizzle here, more especially later in the day. Warm with the sunny breaks for the Midlands up to 22c, but only 19c at best for cloudier West Wales. Mild SW winds and cloud for Wednesday night temperatures falling no lower than 14c. High pressure has slipped off into the Continent by Thursday, with a trough of low pressure erratically crossing the UK, bringing spells of rain, some heavy bursts in the west, although the Midlands could manage a dry morning. A rather warm, humid airmass for Thursday with SW winds, plenty of cloud but also a few sunny intervals which would readily lift temperatures to 23c, but more generally 19 or 20c where damp/ wet. Another mild night to follow with futher rain or showers in places, minima around 14c. [/size][/font]
[font=arial][size=3]
Friday, and the uncertainties magnify as tends to be the case, however strong suggestions that another ridge follows the trough, so the hope at least of a fine, bright and fairly warm day! Just bear in mind that in this rather mobile Atlantic set up timings can be out at this forecasting range, and the ridge could be chased off by another trough through Friday bringing some more rain, especially to Wales, or in another synoptic evolution the ridge gets flattened off leaving a rather cloudy disappointing day with spits of rain. Next weekend and the changeable theme continues, a deep low pressure is close to Iceland with a fairly strong SW to westerly flow over the UK. Bands of rain but with dry spells between, and prospects of large amounts of rain remain low.. sprinkles rather than downpours for most then, and with temperatures continuing around the average.[/size][/font][font=arial][size=3]
[attachment=181490:PPVG89 r cool showery Mon.png][attachment=181491:h850t850eu r cool showery Mon.png][attachment=181492:ecmt850.072 R m dry Tue to Wed.png][attachment=181501:h850t850eu wk R m dry Tue.png][attachment=181493:PPVL89 warm dry Mids little rain pm WW.png][attachment=181494:PPVO89 rain at times Thu esp WW.png][attachment=181495:metslp.120 rain from W Thu.png][attachment=181496:ecmt850.120 Tr to Wales Thu rain at times all.png][attachment=181497:ecmt850.168 DL SE Ice windy some rain weekend.png][attachment=181499:t850Warwickshire.png][attachment=181498:prcpAbertawe~-~Swansea small amounts rain this week.png][attachment=181500:mgram_Birmingham.png][/size][/font]
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