FORECAST FOR NEXT THREE DAYS
Confidence level: Weather type – medium/high. Timing – medium.
Temperatures rising to around 7° or 8° Celsius by day, falling to between 1° and 3° Celsius overnight.
THURSDAY 17th: Bright with sunny spells and scattered showers, these possibly a little wintry at times with hail. During the day the showers will become more isolated and mainly confined to Unst and Yell. Though mostly dry, Orkney will see more cloud developing this afternoon. A F5 N’ly wind over Shetland, with a lighter F3-4 NW to N’ly breeze across Orkney. Mainly dry with clear spells this evening and tonight, but still the chance of one or two isolated showers affecting the exposed coasts of Shetland. A local grass frost in areas sheltered from the F4 N’ly wind.
Sea State: Moderate or rough, with a 2 to 3 metre N’ly wind-swell. Perhaps moderate to slight inshore to the east of Orkney, with a 1 to 2 metre N to NE’ly wind-swell.
FRIDAY 18th: Bright with many places seeing a completely dry day as any showers will be few and far between. With mostly light F2-4 N or NW’ly winds it should feel quite pleasant in the sunshine, despite the continuing below average temperatures. A fine dry but cool night with a touch of grass frost as winds fall light and variable and the cloud stays well broken.
Sea State: Moderate or slight, with a 1 to 2 metre N’ly wind-swell, but perhaps NE’ly around Orkney.
SATURDAY 19th: Dry and bright with sunny or clear periods. Cool by day, cold overnight with a grass frost away from coasts. Little or no win d.
Sea State: Perhaps mainly slight, with a 1 metre wind-swell, NW or N’ly in Shetland waters and NE’ly around Orkney.
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TEN DAY OUTLOOK
Confidence level: Weather type – medium. Timing – medium/low.
Temperatures perhaps in the daily range around 9° Celsius down to about 4° Celsius.
SUNDAY 20th: Dry and bright with variable amounts of cloud and little or no wind for Shetland, a light E’ly breeze perhaps picking up across Orkney. Cool with the risk of an overnight frost.
Sea State: Moderate or slight, with a 1 to 2 metre NE’ly wind-swell.
MONDAY 21st: A fine dry and bright day, but with a cool NE’ly breeze.
Sea State: Perhaps moderate, with a 2 metre NE’ly wind-swell.
TUESDAY 22nd - SUNDAY 27th: Mainly dry and settled but cool with the risk of overnight frosts. E to NE’ly winds possibly increasing fresh on Tuesday, otherwise mostly light or moderate.
Sea State on Tuesday: Possibly moderate or rough, with a 2 to 3 metre NE’ly wind-swell.
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DISCLAIMER
This outlook is based on an appraisal of the charts and ensembles from GFS, ECMWF, UKMO and FAX available via the internet, and over 30 years of local weather experience.
Be aware that the weather over north-west Europe - and especially around the Northern Isles - is part of an ever-changing and dynamic system. Therefore regard the 10-Day Outlook' as a guide only - there are times when any outlook going beyond about 36 to 48 hours is likely to prove unreliable.
Always check the latest forecast from the UK Met Office before undertaking any weather-dependant activity.
All forecasts are for planning purposes only.
Neither Dave Wheeler, nor any employee of Fair Isle Weather Services, accepts any liability for the accuracy of this forecast.
Please note that this page is usually updated every day (around mid-morning) but on occasions updates may be irregular. A daily service by e-mail is available, but is charged for.
If you wish you can have the 10-day Outlook
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Please contact Fair Isle Weather Services for further information.
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