Detailed mountain weather forecast - East Highland
Updated: 0340 on Mon 20 May 2013
Overview for Monday
A mostly dull overcast start with extensive hill fog and some light rain or drizzle. Becoming mainly dry and increasingly bright especially in the south and west with some sunshine. High risk of heavy thundery showers developing.
Hazards
Persistent extensive hill fog: In morning, becoming more patchy in the afternoon. [High risk]
Thunderstorms: Mainly Perthshire and Angus Hills this afternoon. [High risk]
Heavy persistent rain: Some intense downpours in south in the afternoon. [Low risk]
Strong sunlight: Especially to the west, sunburn risk. [High risk]
Weather summary
Dawn to 0900
Mist
20% chance of drizzle
0900 to 1200
Sunny Intervals
10% chance of rain
1200 to 1500
Thundery Shower
30% chance of hail
1500 to Dusk
Thundery Shower
40% chance of hail
Weather
A misty start with some fog and low cloud around gradually brightening up with some sunny spells. For those out early, then there is the opportunity to ascend through the low cloud, whose tops will be around to be rewarded by some fine views in the sunshine above the inversion. The strong May sunshine will lead to a high risk of sunburn and sunstroke also dehydration could be an issue. As temperatures rise, some heavy showers will develop, especially across the Perthshire and Angus Hills, where they will turn heavy and thundery with some large hail. Some intense downpours likely with small watercourses rising quickly where these occur.
Visibility
Moderate to poor widely in the morning with hill fog, becoming good during the afternoon in the south and west where the best of the cloud breaks will be. Becoming poor to very poor in the showers.
Hill fog
Patchy to low levels at first, this gradually lifting although probably persisting over Lochnagar. Then occasional patches above 750-900m tending to lift above tops though returning in the heavier showers that develop later.
Maximum wind speeds above 600m
Northwesterly 10mph increasing 20-25mph gusts 35mph later.
Temperatures
Glens - Plus 5 to Plus 8 Celsius rising to Plus 20 Celsius.
900 m - Plus 12 Celsius.
Freezing level - Well above the summits.
