[Andy Mayhew]

Mountain Forecast – Issued Thursday 2nd June 2011

Mostly dry but with a cool breeze

General Situation:

High pressure dominates in the Atlantic, with a weaker ridge of high pressure over the British Isles, drawing in a cool northeasterly airflow.  A weakening cold front moving south through the course of the weekend, bringing cooler conditions to all parts by Sunday.  Some showers affecting the West Highlands and also a risk of hill fog down the eastern side of the Pennines and Peak District.

The Weekend in Detail:

Saturday 4th June -  A fine warm and sunny day across much of England and Wales, with summits clear and temperatures in the vallies still a little above normal.  However lower cloud and hill fog may affect some more eastern hills, especially the Cheviots, N York Moors and eastern parts of the Yorkshire Dales and Peak District.  A strong northeasterly breeze over summits, but rather pleasant in sheltered spots.

Across the Highlands a cold front will bring a spell of thicker cloud and maybe a few spots of rain and some hill fog through the morning, clearing south to the Southern Uplands by afternoon.  Behind, brighter but cooler conditions. 

Sunday 5th June - The cold front will weaken as it pushes further south overnight.   A bright start for upland areas with most summits becoming clear but cloud increasing through the morning.  Across the Highlands a risk of a few showers developing, especially across Argyll and Lochaber, with associated cloud levels lowering.  Elsewhere should stay dry although there remains a risk of hill fog and maybe some patchy light rain affecting hills towards the east coast of England.  A stronger, and cooler northeastely breeze over summits (Southwesterly in the NW of Scotland) and temperatures at all levels down on the previous few days and if anything feeling a little cool for June.

Further Outlook:

It looks like thicker cloud and rain pushing into the north and west of Scotland on Monday morning, spreading to other parts of the Highlands and N Ireland through the afternoon, but elsewhere still mainly dry.   However the week turns more unsettled with high pressure remaining out to the west and a cool northerly airflow down across the country.   Showers mainly in the north at first but a spell of persistent rain may well develop across England and Wales by mid week.  Temperatures a little disappointing for June.

 

For the latest daily weather update covering most upland regions of Britain,  more please visit The Mountain Weather Information Service website provided by Geoff Monk.

Met Office Mountain Forecasts are also available for the Highlands, Lake District, Peak District and Wales.

 

Note: this is a personal interpretation of likely weather conditions on the UK hills and is intended for general guidance purposes only. Local conditions may vary and changes may occur suddenly and without warning. Extreme caution should always be exercised when venturing into the hills

TOI 12.15 GMT  –  2nd June 2011

Forecast by Andy Mayhew for Ukww

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[PK2]

Thanks Andy.
FWIW this evening there seemed to be a patchy layer of cloud/fog starting at ~150-200m and being about 200-300m thick (guesses). It only seems to be present near where the ground rises above the base level, ie there's no cloud over low ground or the sea.