Southern Uplands Forecast
Viewing Weather Forecast for Monday 24th April 2017
The Galloway hills eastward to the Lammermuir hills. The Cheviots (including higher hills within the adjacent Northumberland NP).
Forecast last updated on Monday 24th April 2017 at 7:07am
Summary for all mountain areas
A cold front passing southwards brings a marked change to Arctic air. Heavy showers of snow and hail spread from the north, merging into constant precipitation for several hours in Scotland. Winds up to gale force. Whiteout and severe wind chill Scottish mountains.
Headline for Southern Uplands
Increasingly cold. Snow & hail becoming constant. Gales later.
How windy? (On the summits)
Northwesterly, strengthening 20 to 30, then 40mph from west by middle of day onward, or 50mph toward evening.
Effect of wind on you?
Deteriorating to give arduous walking and significant wind chill by early afternoon onward.
Hail & snow showers; later snow setting in. Isolated lightning.
Rain at dawn soon clears. Then occasional hail and snow showers developing from north. By later afternoon, precipitation becoming very frequent, or setting in for an hour or more, focused on Lothians & Borders; snow to increasingly low levels. Isolated thunder & lightning.
Cloud on the hills?
Summits largely cloud free within a couple of hours following dawn. Toward evening cloud shrouding hills above 500 to 700m where snow develops.
Chance of cloud free summits?
Sunshine and air clarity?
Patches of bright sunshine and often excellent visibility, but cloud will tend to fill in afternoon and visibility later very poor due to snow; risk whiteout some tops.
How Cold? (at 750m)
0C, later -2C. Where directly exposed to strongest wind, feeling like -15 Celsius.
700m, dropping to 400m or below by late afternoon.
All mountain areas of Britain from Tuesday 25th April 2017
An Arctic air mass encompasses the British Isles bringing winter-like conditions during midweek. Freezing levels will be very low. Widespread snow and hail showers, sometimes frequent, or near constant northern Scotland. Significant wind chill. Less cold from about Thursday onward as winds back westerly. Frontal systems moving in from the Atlantic are likely to bring periods of rain and upland gales heading into the May Day weekend, although a gradual improvement may develop.