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Week's Forecast

Teesdale weekly forecast, issued Sunday 23rd April, valid Wednesday 26th to Sunday 30th April, next update by Sunday 30th.Cold and wintry midweek, milder weekend.The jet stream will be across us from north to south for much of this week before moving northwards at the weekend. Winds will be a strong northerly backing westerly later. This will bring unseasonably cold air from the far north with associated wintry showers, hill snow and night frost as the air is channelled between low pressure across Scandinavia and a blocking anticyclone to our west. At the weekend the cold air supply will be cut off as the anticyclone drifts southwards and winds turn to a kinder westerly. This week's overall prediction for mid-Teesdale:- high 12°C (54°F), low -2°C (28°F) precipitation 12mm (0.5in), sunshine 52hr, high gust 45mph. Risks:- flooding medium, gale medium, frost high, fell snow high.There is the chance of some more prolonged snowfall on our fells this week although I expect most of the precipitation to be showery. The only chance of snow lying at habitable levels in the dale at this time of year is for it to fall heavily overnight. By day any snow will be light and soon melt in the strong sunshine.Last week's weather:- Screen temperature 6.6°C (normally 6.7°C) High 15°C(60°F) Thursday. Low -3°C (27°F) Tuesday. Windiest 33mph Friday. Precipitation 9mm (norm 15mm). Sunshine 33hr (norm 36hr).April is continuing the trend of warmer than average conditions and after the temporary cold setback this week I expect this to continue. As well as being warm, this April is also sunnier than average and drier, although this week could change that. Fine summers have often followed mild winters in the past and last winter was certainly mild and quite benign. We shall see. Ken Cook’s 12 hourly Teesdale forecasts, http:// www.kencook.magix.net



COPLEY CLIMATOLOGICAL STATION altitude 253metres(830feet) Met. Office manned observing site.