Southern Uplands - the Mountain Weather Information Service

MOUNTAIN WEATHER INFORMATION SERVICE
www.mwis.org.uk
Southern Uplands
The Galloway hills eastward to the Lammermuir hills. The Cheviots (including higher
hills within the adjacent Northumberland NP).
Winter courses, hill walking courses and rock climbing courses in Northumberland,
the Lake District and the Scottish Highlands. Visit climbgb.com for more information
General Summary for Saturday, 28 January, 2017
British Mountain Summary:
Based on forecast chart for noon 28 January, 2017
An extensive areas of precipitation and very low cloud will clear only very
slowly eastwards across Wales and western mountains elsewhere,
following passage of a front. For many areas snow, mostly light, will fall
most of daylight.
Headline for Southern Uplands
Wind soon light. Rain and snow very slowly clearing from west.
Detailed Forecast for Saturday, 28 January, 2017
How windy? (On the
summits)
Southerly 20 to 30mph Borders after dawn. Will become westerly 15mph from the west
during morning.
By dusk west or northwesterly 20 to possibly 30mph.
Effect of wind on
you?
Mostly small.
How wet?
Rain and snow gradually clearing eastwards
Overnight precipitation, snow above 200 to 500m, will only clear very slowly west of M74
from west afternoon.
Further east, mostly light precipitation will continue throughout daylight.
Cloud on the hills?
Very extensive and low
Cloud widespread across the hills, 'hanging' in some areas from lower slopes up most or
all day. Slowly in Galloway, breaks will develop to higher slopes by dusk.
Chance of cloud free
summits?
Less than 10%; will rise to 40% west of M74 by dusk.
Sunshine and air
clarity?
Sunshine will slowly extend eastwards into Galloway only well into afternoon.
Visibility widely very poor, but will become excellent from west as precipitation ceases.
How Cold? (at 750m)
Close to 0C.
Freezing Level
650 to 850m; but most terrain at least partly frozen from valleys up.
Visit us at www.mwis.org.uk
Page 1 of 2
Live SU 2017-01-28 2017-01-30
www.mwis.org.uk
MOUNTAIN WEATHER INFORMATION SERVICE
Southern Uplands - Looking Ahead
Sunday 29 January
Monday 30 January
Low confidence in this forecast: West
backing southerly, 15mph. In afternoon
strengthening to 25mph west of M74.
Small
Southerly around 25mph.
Snow then rain will spread north
Rain now and again
Substantially or completely dry morning.
Rain, or initially snow above 300m, will
reach areas west of M74 middle of day or
afternoon and spread gradually
northeastwards. Rain will slowly penetrate
toward higher tops.
Rain and drizzle now and again, most likely
west of M74.
May become widespread from SW
Very widespread, particularly Galloway
In morning, fog in and above some valleys.
Higher areas substantially cloud free,
although above 500m cloud may envelop
Galloway.
Increasing threat afternoon of the cloud,
above 400 to 550m becoming widespread
west of M74 and then extending NE.
West of M74: More or less blanket cloud
across the hills, few breaks above 600m,
and patches below 350m.
East of M74: Cloud rare below 450m and
breaks to 650 to perhaps 750m.
Chance of cloud
free summits?
40%
10%
Sunshine and air
clarity?
Sunshine on the hills will soon give way
from south. Excellent visibility on the hills
morning, but will turn hazy or murky.
Sunshine rarely, most likely valleys near
Lothians.
Often very good visibility lower slopes;
widely foggy hills west of M74.
How Cold? (at
750m)
-1C rising to 2C, at least west of M74 by
dusk.
6C, although perhaps only 2C Borders in
morning.
Freezing Level
600m, but after a frost, some lower terrain
frozen morning. Will probably rise above
summits west of M74 afternoon.
Above the summits. Some higher terrain
may still be partly frozen, mainly Borders.
How windy? (On the
summits)
Effect of wind on
you?
How wet?
Cloud on the hills?
Mostly fairly small.
Planning Outlook
All mountain areas of Britain from Sunday, 29 January, 2017
A gradual transition over the next week into generally southwesterly winds. Upland gales will become frequent, bands of rain
and sometimes snow will be focussed on western mountains.
On higher areas, there will be freeze thaw cycles: On the Scottish Munros, temperatures will frequently be below freezing
point, although the freeze periods often brief over England and Wales.
Forecast issued at 7:31 on Saturday, 28 January, 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.
Visit us at www.mwis.org.uk
Page 2 of 2
Live SU 2017-01-28 2017-01-30