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Everything posted by parhelion
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Model Output Discussion - Into 2024
parhelion replied to Catacol's topic in Forecast Model Discussion
Ah, so something none of us can verify then? -
Model Output Discussion - Into 2024
parhelion replied to Catacol's topic in Forecast Model Discussion
Yep, a solid set of GEFS and I'm not sure where Kasim's 50/50 was coming from. Once again very confusing. -
Model Output Discussion - Into 2024
parhelion replied to Catacol's topic in Forecast Model Discussion
That's very harsh on Ben. The fact is recent operationals from the GFS have been out of kilter with its own suite and not in a consistent 'latching on to new trend' way either. It's more than fair to be sceptical. -
I don't know what you've been looking at, but they aren't the ensembles that's for sure! In fact, based only on your post, I'd say you were looking exclusively at the more recent GFS operationals. Unfortunately the model thread is increasingly full of the usual suspects seeing a wobble from the GFS (which ain't the best model) at 200-and-something-hours and thinking it's all gone wrong. At least there's some balance in there from the more experienced and level-headed posters who can see the wider picture.
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Storms and Convective discussion - November 2023 onwards
parhelion replied to Supacell's topic in Storms & Severe Weather
It is not a supercell. -
ARPEGE staying consistent with its previous output, even with the lighter flurries mainly over the hills this evening before the more organised stuff makes it in from Wales later on tonight. Worth mentioning too that the front pushing up during the wee hours of Monday also turns to snow on its northern edge for a good few hours across the N Mids and parts of S Yorks and Lincs. I expect that'll be much more marginal though.
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Worrall Road is flooded, usual spots partially flooded too like Eccy Road south, Endcliffe Park, Kelham Island, Carbrook, Ecclesfield ... It's not as dire as Chesterfield but there are a lot of traffic issues and blocked roads as you can imagine.
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After a lighter lull, rain has picked up again around Sheffield
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Radar looks insane doesn't it? Just a conveyor belt of rain
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Yes it really looks set in now
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That 'gap' north of Cambridge already showing signs of filling in as it all arcs north and west Looking towards Lincs for the next batch though.
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It's meant to consistently reinvigorate from the south through today, unfortunately. Here's the ARPEGE, which has been one of the more consistent outputs in the last few days...
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Several heavy pulses of rain overnight, and raining heavily now, too. Seems from local stations there is some variance, with the figures so far since midnight heading towards the 1 inch mark at a pace.
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Similar places still get the prolonged rainfall, however. It will be interesting to see what the radar looks like in the morning as we move increasingly towards a nowcast event.
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I've read that the crazy high River Don projection is a bit anomalous and dubious compared to the estimations from other hotspots across the city
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ARPEGE 12z accumulations in line with the latest Met Office warnings. Looks awful for here tomorrow, and with those river projections @Josh Rubioposted earlier, there is potential for some really serious impact here.
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Models show E Scotland as the hot spot for the highest rainfall totals. Not beyond the realms of possibility that we go red warning up there and perhaps a more localised amber for other high-total areas.
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ARPEGE has similar totals for E Scotland as well so the agreement is there for a serious event. Over two inches across a significant portion of N and E England, too.
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Storms and Convective discussion- October 2023
parhelion replied to Supacell's topic in Storms & Severe Weather
The south doing very well again today