Saturday’s forecast – Storm Aiden

Good evening all its been a while since I have written a forecast like this. The first spell of properly windy weather is going to move across the Western Isles on Saturday followed by another on one Sunday. We are going to see strong winds but how strong is the difficult question as it will all depend on how close the area of low pressure gets to us and the gradient of the isobars. Closer to us and we could see the higher end winds gusting 70 to 80 mph. Further out to sea and the lower the wind speeds. As ever I try my best to talk you through this weather events and give you the most up to date information. Things and can and will change I urge you to have more than one way of getting weather warnings. Yes, we get storms all the time but this is a two day double whammy and the first serious storms of the winter.

Please do NOT use Western Isles Weather for the protection of life and property please follow local and national government issued warnings and advice. Please have more than one source for weather information in extreme weather, Such as the Met office.

A Met Office yellow weather warning for wind comes into force 06:00 Saturday morning and expires at 21:00 Saturday evening. The full warning and latest updates can be found via the Met Office website or app.

On this Friday evening, we are seeing a few scattered showers around and these are heavy in places. Some clear skies and variable amounts of cloud. Winds gusting 30 to 40 mph bu lighter Lewis and Harris under 20 mph.

Overnight – We are going to see a dry start with some clear skies and cloud. We are going to see some heavy rain move across the Western Isles during the early hours and this will become persistent at times. Winds gusting 30 to 40 mph increasing as the evening goes on and at times reaching 50 mph.

Morning – Heavy rain will sweep across the Western Isles. This is expected to be slow moving and persistent in spots some of the heaviest of the rain across Lewis. Some lighter slots and the cloud will dominate. Winds of 20 to 40 mph gusting 50 to 60 mph. Gusts reaching 70 mph cannot be ruled out. The greatest risk of this will be for the Uists and Barra.

Afternoon – Some drier spells. Showery rain with some heavier spells of rain moving in for a time. The cloud still dominating. We are going to see winds of 20 to 40 mph gusting 50 to 60 mph.

Evening – Further spells of rain. Will be lighter than the morning but turning increasingly showery towards the end of the day which will be heavy at times. Some clear spells of still be plenty of clouds. This is where the uncertainty lies we are going to see winds gusting 40 to 60 mph. We could see some wind gusts reaching 70 mph and as mentioned in the Met Office warning the Western Isles could see some wind gusts reaching 75 mph. At this point, the strongest of the winds would be South Uist and Barra. Where we could see winds gusting to 75 mph maybe even to 80 mph but there is a lot of uncertainty with this.

Winds will be from the South East and move to come from the West and South West as the goes on. Temps of 6C to 13C
Sunrise and Sunset

Stornoway – 07:39 and 16:37

South Uist – 07:40 and 16:45

3 days ahead

Sunday – Further gales possibly severe gales with outbreaks of rain and again some heavy rain.

Monday – Sunshine and showers with winds gusting 30 to 40 mph.

Tuesday – a few scattered showers. Winds becoming lighter with some sunshine.

I will keep you updated during the coming days with the stormy weather.

Have a great evening.

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