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Weather warnings may have been issued

South Grampian and Southeast Highlands

Confidence

High for favourable conditions dominating Tuesday, then medium for the timing of onset and clearance of the rain Wednesday and Thursday respectively.

  • Tuesday
  • Wednesday
  • Further outlook

Tuesday 19 September 2017

Weather hazards

Strong sunlight Medium likelihood Hide detail

Harmful UV levels from sunlight increase with altitude giving a greater risk of sunburn and eye damage, even on some overcast days. On breezy days, the cooling effect of wind on exposed skin may disguise any feeling of sunburn until it is too late. If there is snow cover, glare increases the effect of UV rays especially on the eyes. It is advisable to wear sun block, protective clothing such as a long-sleeved top and hat and have good quality eye protection.

Forecast

Favourable conditions for most of Tuesday, then turning unsettled from Wednesday.

Weather at 800m

06:00 09:00 12:00 15:00 18:00 21:00
Sunny day Sunny day Sunny day Sunny intervals Sunny intervals Clear night
00% 00% 00% 00% 00% 00%
Chance of precipitation
1,400 1,400 1,500 1,600 2,400 2,800
Freezing level (m)
The level above which snow is expected to settle or the ground is expected to be frozen

Wind speed and direction (mph) By altitude above mean sea level

06:00 09:00 12:00 15:00 18:00 21:00
1100m W 12 14 W 11 15 W 9 12 W 7 10 S 11 14 S 17 21
900m W 7 9 W 7 10 W 8 11 W 7 10 S 10 13 S 14 19
600m W 4 6 W 4 6 W 6 9 W 5 9 S 7 11 S 9 15
300m NW 6 10 NW 4 10 W 5 11 SW 4 10 SW 3 10 SW 2 8
Glen S 1 5 SW 3 5 SW 3 7 SW 5 10 SW 4 11 SW 4 11

Temperature (°C) By altitude above mean sea level

06:00 09:00 12:00 15:00 18:00 21:00
1100m 2 2 3 5 4 5
900m 3 4 6 7 6 6
600m 5 6 9 10 9 8
300m 7 9 12 13 11 10
Glen 6 9 14 14 12 11

Feels like temperature (°C) By altitude above mean sea level

06:00 09:00 12:00 15:00 18:00 21:00
1100m -2 -3 0 2 0 0
900m 0 1 3 5 4 3
600m 4 5 7 9 7 6
300m 5 8 12 12 11 10
Glen 5 9 13 13 12 10
Sunrise: 06:52   Sunset: 19:22
Moon phase: Waning crescent

Weather

A chilly start with some shallow fog patches in the glens at first. Dry with plenty of sunshine.

Chance of cloud-free mountain/hill tops at 800m

100% with any clouds well above the summits.

Visibility

Very good or excellent

Met Office Aberdeen meteorologist's view

Temperatures around zero Celsius in the glens at dawn, but soon rising during the morning.

Wednesday 20 September 2017

Sunrise: 06:54   Sunset: 19:19
Moon phase: Waning crescent

Weather

Patchy light rain will spread from the west through the day, turning persistent from late afternoon or early evening. The rain will clear erratically northwards overnight.

Temperature

  • At 800m Plus 7C lifting 11C mid-afternoon, lowering Plus 4C later
  • Glen Plus 10C lowering Plus 3C by dawn, lifting Plus 16C mid-afternoon, lowering Plus 11C later
  • Freezing level Above summits lowering 1400m later

Visibility

Moderate or good, occasionally poor across southern aspects.

Chance of cloud-free mountain/hill tops at 800m

80% lowering to 50% from late morning as general bases fall to 700-900m, then becoming 30% in west later.

Maximum wind speed expected

South to Southwest reaching mean 40-45mph either side of mid-day with gusts 60mph over exposed ridges and summits

Thursday 21 September 2017

Sunrise: 06:56   Sunset: 19:17
Moon phase: New

Patchy rain turning heavier for a time, before clearing to the east in the afternoon. Light variable winds with the freezing level above the summits.

Friday 22 September 2017

Sunrise: 06:58   Sunset: 19:14
Moon phase: New

Dry and bright at first. Cloud increases through the day with some light rain in the afternoon. Light winds soon become strong south or southwesterlies, perhaps reaching gale force over the highest summits for a time. Freezing level well above the summits.

Saturday 23 September 2017

Sunrise: 07:00   Sunset: 19:11
Moon phase: New

Cloudy with patchy light rain at times. Strong southwesterly winds increasing to give widespread southerly gales. Freezing level well above the summits.

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