MOUNTAIN WEATHER INFORMATION SERVICE
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Southeastern Highlands
Hills accessed from Callander, Loch Tay and Loch Rannoch areas. Areas east of
Loch Ericht, and south of Dalwhinnie, upper Glen Feshie and the River Dee (includes
southernmost Cairngorm NP).
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General Summary for Saturday, 27 May, 2017
British Mountain Summary:
Based on forecast chart for noon 27 May, 2017
As pressure falls slowly across Britain, bursts of rain and thunderstorms
will move northwards, the rain locally heavy or torrential.
Headline for Southeastern Highlands
Risk thunderstorms spreading from south.
Detailed Forecast for Saturday, 27 May, 2017
How windy? (On the
Munros)
East to southeasterly, speeds will vary, at times very light, but often 20 to 30mph.
Effect of wind on
you?
Often fairly small, but risk of sudden powerful gusts developing to low levels,
particularly later in day and around thunderstorms.
How wet?
Thunderstorms developing afternoon and evening
Isolated risk of a thunderstorm morning and early afternoon.
Then scattered bursts of heavy rain and thunderstorms, the rain perhaps locally torrential.
Cloud on the hills?
Forming widely in rain
Banks of low cloud may shroud eastern mountains all day, but some places starting clear
- and higher summits may be above lower cloud. In rain will form increasingly on the hills,
in places from forest canopies up.
Chance of cloud free
Munros?
80% later 30% west; but 20% all day east.
Sunshine and air
clarity?
Hazy sun, soon fading as high cloud thickens.
Visibility very good, but deteriorating in rain.
How Cold? (at 900m)
Very warm at 15C or above, but later dropping to 10C or lower in rain.
Freezing Level
Above the summits
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MOUNTAIN WEATHER INFORMATION SERVICE
Southeastern Highlands - Looking Ahead
Sunday 28 May
Monday 29 May
West to northwesterly, 15 to 20mph, or
less by afternoon, but risk 30-35mph early
morning.
Mostly fairly small
Low confidence of detail in this forecast:
Southerly, 10 to 15mph or less.
Largely dry
Likely dry
Chance of a little residual rain left from
overnight, but most or all day likely dry.
Small risk of isolated showers breaking out
by afternoon.
Mostly very little
Mostly very little
Patches of cloud or fog from low levels up
post-dawn, but will all break up and clear
through the morning.
Fragments around higher slopes in morning,
should slowly lift, but risk may persist for
many hours some areas.
Chance of cloud
free Munros?
80%
60%
Sunshine and air
clarity?
Sunshine breaking through.
Fog at first on some hills, but visibility
becoming excellent.
Sunshine occasionally.
Visibility very good, but risk fog lingering
some hills.
How Cold? (at
900m)
8 to 11C
7 to 10C
Freezing Level
Above the summits
Above the summits
How windy? (On the
Munros)
Effect of wind on
you?
How wet?
Cloud on the hills?
Small
Planning Outlook
All mountain areas of Britain from Sunday, 28 May, 2017
Following Saturday's thundery breakdown, most areas will be dry into Sunday, and cooler than previous days.
On Monday, there is a risk of further thundery rain extending from the south, although detail is uncertain.
For the rest of the week, high pressure will be to the south & south-east, allowing some dry and bright days, but fronts will try
and encroach from the Atlantic, bringing occasional rain to mainly western Scotland. A generally more unsettled pattern is
likely to develop as the week progresses, with rain becoming more frequent, and winds strengthening at times.
Forecast issued at 7:45 on Saturday, 27 May, 2017
The production of the Scottish forecasts is fully funded by the Scottish Government through the Mountaineering Council of
Scotland with the support of sportscotland. Forecasts are issued daily by 16:30 and are kept under review and amended as
necessary. However, expected conditions can still change after issue. © Copyright Geoff Monk & Associates, 2017.
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