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Teesdale week's Forecast

Teesdale weekly forecast, issued Sunday 16th September, valid Wednesday 19th until Sunday 23rd September, next update by Sunday 23rd.Windy and unsettled.The jetstream remains close to Teesdale this week and as ex-tropical storm Helene passes up the western side of the UK early this week it will introduce humid conditions. It will then bend the jet and pull some cooler air from the north-west behind it towards the end of the working week. Into the weekend there are tentative signs that high pressure will build from the south settling Teesdale’s weather down This week's overall prediction for mid-Teesdale:- high 16°C (61°F), low 5°C (41°F) precipitation 25mm (1.0in), sunshine 40hr, high gust 55mph. Risks:- flooding medium, gale high, ground frost medium.As Helene passes through there will be some windy days and plenty of moisture in the atmosphere. There will be rain or showers on many days with the heaviest rain expected around Thursday. Winds could gust to 60mph at times which is nothing to what Helene was producing at her peak, but strong enough for us. These storms need warm ocean temperatures above 27°C(80°F) to feed off, so they soon lose power as they track across our waters.Last week's weather:- Screen temperature 11.5°C (normally 11.9°C) High 16°C(61°F) Tuesday. Low 5°C(41°F) Saturday. Windiest 36mph Sunday 16th. Precipitation 14mm (norm 15mm). Sunshine 35hr (norm 36hr).The expected strong winds this week fit well into a familiar pattern in our Teesdale climate known as the equinoctial gales period. These tend to occur around the autumn and spring dates when the sun passes over the equator – the time when night and day are equal. Historically these storms are often followed by a settled spell named the old wives’ summer. Let’s hope this year follows the pattern, I think it looks quite promising at the moment.Ken Cook’s 12 hourly Teesdale forecasts, http:// www.kencook.magix.net



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