WEATHER OUTLOOK FOR SHETLAND
Wednesday, 18th April 2012 at 09:57
TODAY: RAIN AND STRONG WINDS CLEARING SHETLAND
TONIGHT: A FEW SHOWERS
TOMORROW: BRIGHT START, RAIN AND WIND LATER
DAYS 3-5: RAIN OR SHOWERS, BREEZY
DAYS 6-10: COOL, SHOWERS, LIGHTER WINDS FOR A TIME
Shetland starting today cloudy and cold with rain but gradually becoming drier and brighter from the south as the strong E’ly wind eases. Orkney bright with showers and a moderate E’ly wind. Clear spells, scattered showers and moderate E to NE’ly winds tonight.
A bright start to Thursday but strengthening E’ly winds bringing rain later.
Showers or longer spells of rain to end the week, but also a few brighter spells. Cool with occasionally strong E to NE’ly winds. Becoming drier and brighter over the weekend as winds ease.
Next week remaining cool with showers. Light winds at first, but SE to E’ly winds strengthening during the second half.
GENERAL SITUATION AND SYNOPSIS 06:00 UTC
A gradually filling depression will remain slow-moving over the British Isles until after the weekend, maintaining rather unsettled conditions.
During the next few days the low centre, presently over southwest England, will move around the UK in an anticlockwise direction, ending up near the Hebrides by the weekend.
Early next week the remnants of the depression is forecast to drift away eastwards, with pressure temporarily building over the Northern Isles.
During the second half of next week another depression is predicted to drift southeast from Iceland to be centred over the UK by the following weekend. As it does so, and pressure builds across Iceland, we may well see an E’ly airflow again strengthening.
FORECAST FOR NEXT THREE DAYS
Confidence level: Weather type – medium. Timing – medium.
Daytime temperatures rising to 9° or 10° Celsius in Orkney, and 7° or 8° Celsius in Shetland. Overnight. temperatures generally down to 3° to 5° Celsius.
WEDNESDAY 18th: Shetland starting the day cloudy and cold with periods of rain and a F6 E’ly wind. However it will tend to become drier and brighter from the south as the rain turns showery and the wind eases. Orkney will have a bright, mild day with some sunny spells and F4 E’ly winds. There will be a few showers around, some of which could well be heavy. A cloudy start to the evening for the north of Shetland, then a mixture of clear spells and a few showers overnight with F3-4 E to NE’ly winds across the Northern Isles.
Sea State: Perhaps mainly moderate, with a 2 metre SE to E’ly wind-swell.
THURSDAY 19th: Starting bright with a mixture of sunshine and scattered showers during the morning. The afternoon then clouding over with a F3-4 E’ly wind freshening F5-6 with rain moving in from the southeast by the late afternoon evening and turning persistent through the evening.
Sea State: Moderate to rough, with a 2 to 3 metre E’ly wind-swell.
FRIDAY 20th: Rather cloudy with showers or longer spells of rain and a F4-6 E to NE’ly wind.
Sea State: Moderate to rough becoming moderate, with a 2 to 3 metre E’ly wind-swell easing 2 metres and turning E to NE’ly.
Confidence level: Weather type – medium/low. Timing – low/medium.
Temperatures perhaps in the daily range 7° or 8° Celsius down to 2° to 4° Celsius.
SATURDAY 21st: Mostly cloudy with rain or showers. Moderate N’ly winds across Orkney, but increasing fresh for a time over the west of Shetland.
Sea State: Moderate becoming moderate to slight, with a 2 metre E to NE’ly wind-swell easing 1 to 2 metres.
SUNDAY 22nd: Becoming drier and brighter with moderate E’ly winds.
Sea State: Perhaps moderate, with a 2 metre NE’ly wind-swell.
MONDAY 23rd – SATURDAY 28th: Cool with the chance of some showers, wintry over the hills. With light winds, overnight frosts are a risk early in the week. E’ly winds strengthening later.
Sea State on Monday: Possibly moderate becoming moderate to slight, with a 2 metre N to NE’ly wind-swell easing 1 to 2 metres.
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
Always check the latest forecast from the UK Met Office before undertaking any weather-dependent 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.
Dave Wheeler MBE FRMetS
Shetland, ZE2 9JU
Telephone: +44 (0)1595760224
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