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Beast from the East Mk.2. On the way?
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<blockquote data-quote="MrNoo" data-source="post: 7335203" data-attributes="member: 2767"><p>Yes, SSW happened, downwelling normally takes a while but they seem to think that due to the lack of strength of the jetstream then downwelling will be quicker. Models are pretty much all over the place currently (due to this, they dont know how to deal with a SSW) but I suspect they will eventually sort themselves out, there is supposed to be another SSW in mid/late Jan too. A SSW can lead to a split in the polar vortex and wind reversal for us, so instead of a normal Westerly we get an Easterly but it isnt an exact science.</p><p>My take is that it'll warm up a tad next week 5-7C and the Easterly we're having will abate and I think it'll potentially come in cold again after the short "warm up" be it from a HP over us or way out West of us which would then drag colder air down. There were some very interesting charts this morning if you like snow but looking a long way off so not reliable also some long range charts showing potentially very cold conditions but as said a long way off and well into Fantasy Island as they say.</p><p>At least it's not raining!!</p><p></p><p>I will add that SSW is a Sudden Stratospheric Warming, ie warmer air pushed up into the stratosphere, this in turn leads to colder air being forced down (downwelling) the question is where the cold air comes down and then what impact it has on our everyday weather</p></blockquote><p></p>
[QUOTE="MrNoo, post: 7335203, member: 2767"] Yes, SSW happened, downwelling normally takes a while but they seem to think that due to the lack of strength of the jetstream then downwelling will be quicker. Models are pretty much all over the place currently (due to this, they dont know how to deal with a SSW) but I suspect they will eventually sort themselves out, there is supposed to be another SSW in mid/late Jan too. A SSW can lead to a split in the polar vortex and wind reversal for us, so instead of a normal Westerly we get an Easterly but it isnt an exact science. My take is that it'll warm up a tad next week 5-7C and the Easterly we're having will abate and I think it'll potentially come in cold again after the short "warm up" be it from a HP over us or way out West of us which would then drag colder air down. There were some very interesting charts this morning if you like snow but looking a long way off so not reliable also some long range charts showing potentially very cold conditions but as said a long way off and well into Fantasy Island as they say. At least it's not raining!! I will add that SSW is a Sudden Stratospheric Warming, ie warmer air pushed up into the stratosphere, this in turn leads to colder air being forced down (downwelling) the question is where the cold air comes down and then what impact it has on our everyday weather [/QUOTE]
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