adrianh
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Model Output Discussion - Spring Has Sprung
adrianh replied to Community Team's topic in Forecast Model Discussion
GFS does well when it's default setting of deepening lows swirling across the Atlantic turns out to be accurate (which is often the case as its our default weather). It definitely picked up the path of the latest system much more accurately than UKMO/ECM though which were both miles out at T96 -
Model Output Discussion - Spring Has Sprung
adrianh replied to Community Team's topic in Forecast Model Discussion
March delivered over 30cm of snow to parts of Sheffield last March so it certainly feasible if you get the right synoptics. As for the current charts, it's not a horrendous zonal train of lows crossing the Atlantic - the pieces just aren't falling for us which is unfortunate but things can change quickly. -
Crisis in the main model thread this morning. I don't think the overall pattern is that bad really, it's not a typical zonal train of lows - the pieces just aren't falling kindly for us to make the most of it. With regards tomorrow, I think anybody with elevation will do quite well and those lower down will get a decent covering. Shame it's not hanging around but better than nothing.
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Bitterly cold few days followed by a storm over the weekend. Least it's interesting weather - nothing worse than grey nothingness for days on end. The next chase begins towards the end of next week. Looks promising despite the endless references to 'Iberian Heights' in the main model thread which is definitely this years phrase to wind up cold lovers and rolled out like a harbinger of doom.
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Good time for a model break till after the weekend for those feeling fatigued by another chase! - This one hasn't been a bust, it's just that most of us just haven't had any luck with where the precipitation ended up falling. There's signs of potential from the 25th January with models showing a push of heights up through the UK and still plenty of time left in winter for another cold spell.
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The cold has certainly arrived so it's not a bust in that regard - I think we've just been a bit unfortunate on when/where the precipitation has been. Must be sickening to be on the south coast, the band of snow is literally skirting the coast and 30 miles from what would have been an epic dumping across the entire region.
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Current modelling shows that snow chances are largely for those in the North West and potentially for the south if the path of the low is optimum. However there is always the chance of smaller disturbances delivering over the next week and there'll no doubt be some surprises cropping up within the shorter timescales.
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Crazy looking GFS runs over the past 12 hours - none of them are anything like the previous one after day 6.
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Model Output Discussion - Into Winter
adrianh replied to MATTWOLVES 3's topic in Forecast Model Discussion
Medium/Long term weather prediction is all about probabilities at the end of the day. Positive (for cold) background signals merely improve the probability for cold, they don't guarantee it, particularly as everything has to be aligned very specifically to deliver sustained cold weather for the small land mass that is the UK. -
Model Output Discussion - Into Winter
adrianh replied to MATTWOLVES 3's topic in Forecast Model Discussion
It'll be a seasonal Christmas period for a change - probably not quite cold enough to deliver snow for most of us but places further north are still well in the game. It wouldn't take much of a shift south either to increase snow chances. The overall northern hemisphere pattern looks more than promising moving forward too. -
Model Output Discussion - Into Winter
adrianh replied to MATTWOLVES 3's topic in Forecast Model Discussion
Looks on a knife edge further south but when isn't it in the UK. Cold air 100 miles north or south makes all the difference. -
Model Output Discussion - Into Winter
adrianh replied to MATTWOLVES 3's topic in Forecast Model Discussion
Looks cold in the run up to Christmas - whether it's cold enough for snow is another matter but the NW + anyone with some elevation could do very well and there is plenty of scope for improvement whilst the majority of the energy of the vortex has taken residence on our side of the Atlantic. -
Model Output Discussion - Into Winter
adrianh replied to MATTWOLVES 3's topic in Forecast Model Discussion
A miserable few days ahead. Nothing overly mild, it's chilly/cold rainy days - the worst of all worlds really! Looks like there is the potential for Atlantic ridging attempts after the weekend so we'll see where things are at medium term in a few days.