LAMM 2011 - WEATHER FORECAST

By David Braine - BBC Weather
Updated 23:00 Thursday

General Situation for the weekend 11/12  June at Beinn Dearg issued at 11pm Thursday 9 June

An extended area of low pressure lies from the south of Iceland to the North Sea and covers a large part of northern Scotland with a trough straddling the NW Highlands early on Saturday. Then a  weak ridge of high pressure moving up from the south later will limit shower activity mainly to the eastern highlands overnight into Sunday. Sunday a new area of low pressure will develop over Ireland and northern England but not reach the area until after dark. The associated medium and high level cloud will approach on Sunday but not affect the Monroes. The area will lie in light, moist, unstable and cool NW'ly flow Saturday becoming more stable freshening E’ly by the end of Sunday.

Friday night

Mainly fine and dry after any evening showers have faded then showers developing early on Saturday.  

Visibility good but with some valley/glen mist and fog forming

Winds light NW’ly

Temperatures 2-4C

Saturday

Cloudy with the risk of isolated (slow moving) heavy showers developing with some hill fog and hail possible above 2000ft. Becoming generally dry later with some afternoon sunshine but a continued risk of showers.

Visibility moderate with mist at first then generally good apart from in showers and some patchy hill fog.

Winds NW’ly light in the glens but 10-15mph over the mountains.

Freezing level 4000ft

Temperatures +14 to +16C glens, +2C at 3000ft

Sunday

Bright start with some morning mist and fog clearing to give a mainly dry day with hazy sunhine

Visibility moderate in mist becoming mainly good with only small amounts of hill fog

Winds light SE’ly becoming moderate E’ly by the end of the day, 15-20mph inc 20-25mph above 3000ft

Freezing level remaining at 4000ft.

Temperatures of +16 to +18C glens  +3C at 3000ft

Good luck

David Braine