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Weather guide Monday 25th November to Sunday 1st December 2013

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TonyH

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[font=arial][size=3][b]Headline: Mainly dry, rather cloudy, some frost and fog; near average temperatures[/b][/size][/font]

[font=arial][size=3]Rather a cold week gone with some frosty nights, especially here in Wales where Friday night saw a severe frost down to -7.3c (colder than any official UK station), and -5.5c at Tirabad, Powys. Frosts lighter for the Midlands and most of coastal Wales. Showery early in the week, a mix of hail, sleet, thunder and even snow in places, mainly but not exclusively for higher ground as Swansea, for example, caught some snow in the showers during Tuesday. With sunny spells it did not feel too bad and some days reached 9 or 10c for parts of West Wales, which is near average for late November. [/size][/font]

[font=arial][size=3]Plenty of dry, quiet weather in the coming week as high pressure sticks close to southern Ireland through to Thursday, before it turns breezy but still mostly dry. Variable cloud, so sunshine the most difficult aspect to predict, and there will be further frost and fog at times, more especially early in the week. Another frosty start for many on Sunday, although parts of the Midlands too cloudy for this, and most coastal areas, as is typical in Autumn/ early Winter, have escaped. Some sunny intervals about on Sunday afternoon, but perhaps a lot of cloud especially over the Midlands. Highs on Sunday 7 to 9c. Cloud tending to break tonight with a widespread generally slight frost, although parts of inland Wales down to -4c. Fog may form in places but probably not so widespread this. Similar on Monday, plenty of cloud but with sunny intervals and a touch colder highs of 6 to 8c. West Wales could fare best for sunshine on Monday. Frost and fog forming where cloud breaks permit on Monday night but this a bit of a lottery, although again inland Wales 'favoured' for a frosty night. Again, cloud cover difficult to say for Tuesday, some areas lucky with decent sunny spells, others remaining largely overcast, temperatures once more below average at 6 to 8c maxima. Very little wind throughout this early to middle period of the week. Should anywhere see fog this may be slow to clear and so temperatures would then struggle to top 4 or 5c.[/size][/font]

[font=arial][size=3]Subtle changes by Wednesday with milder and more generally cloudier skies working around the high from off the Atlantic. Less chance of brightness developing then on Wednesday and West Wales coasts and hills may see a spit of drizzle. Milder highs of between 8 and 10c, 11c possible for Pembrokeshire. Although some clear intervals may develop on Wednesday night, a fairly extensive cloud cover is likely so frost more restricted and localised, nowhere getting below zero, so a grass frost at worst. Thursday and another rather cloudy but fairly mild day, brighter intervals in places, highs 9 to 11c. [/size][/font]

[font=arial][size=3]High pressure then slips away SW on Friday as lows track to our north into Scandinavia. The main effect from this pressure pattern change is to tighten the isobars so that with a NW breeze no frost or fog expected for Thursday night, temperatures should remain above 3c. Most of the rain associated with the Scandinavian low is expected to pass to our NE so still an essentially dry picture to end the week. Just the chance the fronts turn out more lively with a spell of light rain later Friday into Saturday? Friday then is breezy but generally dry with some sunny intervals and near average temperatures. Next weekend high pressure still close enough to the SW for plenty of dry weather, although weak fronts could produce a little rain in places. A brisk NW flow so not mild but not much in the way of frost either. Sunshine still likely to be at a premium next weekend with a moist Atlantic air stream. [/size][/font]
[font=arial][size=3][attachment=194785:PPVJ89 dry calm early week local frost and fog.png][attachment=194786:viewimage calm r cold local fog and frost early week.png][attachment=194788:PPVL89 more cloud milder Wed.png][attachment=194789:ecmt850.096 milder We Th still dry.png][attachment=194790:metslp.120 dry r mild Th.png][attachment=194791:ecmt850.144 breezy m dry Fr.png][attachment=194792:viewimage HSW LNE breezy m dry wend.png][attachment=194793:ecmt850.168 m dry ave temps wend.png][attachment=194794:prcpSir~Gaerfyrddin~-~Carmarthenshire mostly dry week.png][attachment=194795:prmslWarwickshire H much of week m dry.png][attachment=194796:mgram_Birmingham.png][/size][/font]
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