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Everything posted by Norrance
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January 2024 CET and E.W.P. forecast contests
Norrance replied to Roger J Smith's topic in Spring Weather Discussion
3.9C and78mms please. -
2015. temps that Winter were +1C above average but with no really warm spells so snow built up at height. Average temps the following year were exactly the same but it was very poor on the mountains and ski resorts because of the larger temperature swings leading to big thaws at times. Here today the worst of both worlds with cold rain at 3C
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There was some snow showers from theWest/ NW on PM air in Jan 18 at times but not what could be described as a widespread lowlands snowfall from memory. Here in the East we had a few showers made it through but nothing really noteworthy unlike the beast a month later. Some decent falls furtherWest and in the Highlands though and even some in the Central belt too.
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They need very cold air very high up in the stratosphere and the clouds have very small ice particles. I have read that under-78C is needed so most associated with the far North in Winter. Some say they precede a cold snap but I not sure if there is any association with an SSW. Also known as mother of pearl clouds and sometimes rainbow clouds.
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If those are the similar to nacreous clouds they have been visible both yesterday afternoon and today in Dundee.
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Favourite christmas weather memories 24-31 Dec
Norrance replied to damianslaw's topic in Spring Weather Discussion
I am another that has been around for some time but cannot recall many white Christmases from the sixties through to the eighties even living in the Central Highlands despite the snowier overall winters. Conversely I do recollect a good number of white New Years including several in a row in the late seventies. It must have been coincidence or bad luck that in those years Christmases were green but the weather changed in the following few days. My favourite white Christmas was definitely that of 1995 with a real blizzard (high winds, sub zero and drifting snow) from the evening of Hogmanay lasting until around noon on the first when the sky suddenly cleared, the sun came out and the wind died leading to a week of extreme frosts. Since then I have seen several white Christmases with snow lying including 2004, 2009 and2010 but not many if any with snow falling on the day. -
Model Output Discussion - Into Winter
Norrance replied to MATTWOLVES 3's topic in Forecast Model Discussion
Too many one liners and off topic posts recently. Please stick to model discussion and if you want to prove a point back it up with reference to the models. Thanks.