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Weather guide Monday 5th to Sunday 11th August 2013

TonyH

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[font=arial][size=3][b]Headline: Mixed; some rain and showers, some dry, bright and warm weather[/b][/size][/font]

[font=arial][size=3]July 2013 was the warmest of any month since July 2006, monthly mean temperatures of 19c for Coventry, it does not often get much warmer! Rainfall wise downpours and thunderstorms in the final week turned it into a rather wet month for parts of the Midlands, while West Wales had well below average rain for the month: [/size][/font]

[font=arial][size=3]Coventry 64.8mm [url="http://bws.users.netlink.co.uk/"]http://bws.users.netlink.co.uk/[/url][/size][/font]
[font=arial][size=3]Rugby 50mm [/size][/font]
[font=arial][size=3]Llanwnnen: 40.6mm [/size][/font]
[font=arial][size=3]Llanelli: 44.2mm [url="http://www.wunderground.com/cgi-bin/findweather/getForecast?query=51.680%2C-4.141&sp=ICARMART4"]http://www.wunderground.com/cgi-bin/findweather/getForecast?query=51.680%2C-4.141&sp=ICARMART4[/url][/size][/font]

[font=arial][size=3]It was also a very sunny month with over 300 hours sunshine for Anglesey and Pembrokeshire. [url="http://www.metoffice.gov.uk/climate/uk/summaries/anomacts"]http://www.metoffice.gov.uk/climate/uk/summaries/anomacts[/url][/size][/font]

[font=arial][size=3]It cooled off early last week only to hot up in many places on Thursday, which saw the highest UK reading of the year, 34c at London Heathrow, while Coventry and much of the Midlands reached 31c, again the hottest of the Summer to date. Meanwhile in Wales some of us were not so fortunate with Thursday's brief heatwave, as the warm airmass contained a lot of moisture resulting in a rather cloudy day over Carmarthenshire and keeping temperatures down to around 22c, while neighbouring Ceredigion fared better seeing sunny spells and maxima of 25c. Many places experienced showers and thunderstorms again last week, parts of the Midlands quite badly hit on Monday and again on Friday evening but more localised. Parts of West Wales saw thunder and lightning too especially on Friday evening. [/size][/font]

[font=arial][size=3]This coming week will continue in the rather unsettled vein, a sluggish pattern of slow moving but not so deep lows trying to make up their minds where to soak, interspersed with weak transient ridges of high pressure. So, while it will be wet at times, showers or even some longer spells of rain never far away, some days this week will turn out very pleasant and feeling warm in the sunshine, all in all a typical week in a british Summer! During Sunday and Monday we are affected by a slow moving trough of low pressure bringing spells of rain and showers, very heavy at times, throughout the rest of Sunday, overnight and well into Monday. Already on Sunday parts of Carmarthenshire have had almost two inches of rain with localised flooding likely? Heaviest of the rain this afternoon over Mid Wales, more patchy, showery rain for South and North Wales and the Midlands. Wales seeing further rain, heavy at times on Sunday night, very wet in places, there will be one to two inches of rain totalling up widely by morning. Much of the rain intermittent and light for the Midlands until morning when heavier bursts affect here too, and the rain on Monday lasts through much of the afternoon, whereas it should have cleared West Wales by around midday. Needless to say a lot of cloud on Monday, although it should brighten through the afternoon over Wales, maximum temperatures betwen 18 and 21c a little below the August averages. Clearing skies on Monday night and fairly low mimima of 7 to 10c, except on coasts adjacent to the warm Summer seas.[/size][/font]

[font=arial][size=3]The weakest of high pressure ridges on Tuesday which is a generally dry and bright day, but with a few showers scattered about. Feeling warm in the sunny spells, highs around 21c for West Wales and 23c for the Midlands. On Wednesday it looks like we are inbeween lows, one just to our SW, the other over the near Continent, a slack pressure pattern over us so light winds. Probably decent sunny spells again on Wednesday but with more in the way of showers for the afternoon, heavy and perhaps thundery in places. Another day where it feels pleasant in any sunny breaks and given the light winds, highs between 20 and 23c, but not so good under the showers! Just the possibilty that one of our adjacent lows decides to encroach further our way to produce some longer spells of rain, but sun and some sharp showers the most likely outcome for Wednesday. Thursday too looking another pleasant enough day, another weak transient ridge expected so few if any showers and plenty of dry weather with sunny spells. Rather warm too, highs 21 to 25c, best for the Midlands. [/size][/font]

[font=arial][size=3]Friday, and relatively high pressure over southern Britain, but with weak fronts crossing the UK from off the Atlantic introducing moist, rather humid air. These fronts look weak and should only produce cloud and a light intermittent rain at times, more especially over West Wales, with perhaps brighter intervals for the Midlands. Damp West Wales coolest on Friday having highs below 20c, but perhaps 23c where it brightens for the Midlands. The mixed bag continues next weekend, so further pleasant and warm weather at times (Saturday or Sunday?), while equally some rain at times (Saturday or Sunday?). One fine and one damp, perhaps wet day the form horse then and anywhere that gets a completely dry weekend most fortunate indeed![/size][/font]
[attachment=180791:PPVG89 rain Mon clears WW pm.png][attachment=180792:PPVJ89 Tue wk R m dry r warm.png][attachment=180793:ecmslp.048 wk R m dry Tue.png][attachment=180794:ecmt850.072 between lows sun showers Wed.png][attachment=180795:PPVO89 wk R m dry r warm Thu.png][attachment=180796:metslp.120 moist damp air for Fri.png][attachment=180797:mgram_Birmingham.png][attachment=180798:prcpWarwickshire showery week.png][attachment=180799:t850Abertawe~-~Swansea ave to warm week.png]


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Fronts were early, some rain Thursday evening rather than Friday

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