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Everything posted by Cold Winter
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Have briefly crossed the 30c threshold already here, currently at 29.8c.
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Model Output Discussion - Winter arrives
Cold Winter replied to Blessed Weather's topic in Forecast Model Discussion
6z op is looking the coldest of all its members at the end of next weekend with a big spread from 6th onwards. -
Model Output Discussion - Winter arrives
Cold Winter replied to Blessed Weather's topic in Forecast Model Discussion
I can see reasons to be excited but we must remember that the GFS/UKMO output relies on a small extension of heights which pushes the low next weekend south. This could easily be weaker and lead us to a more ECM style solution. I feel like the GFS tends to over-do potential cold synoptics (from a UK perspective) ever since its upgrade. Let’s see how it sits within the ensembles, but it is good news that the UKMO is also on board at the moment as GFS+UKMO vs ECM is an unusual split (normally we see ECM/UKMO together). I’ve got everything crossed that the ECM comes on board and stays onboard (and that the others don’t then flip). If we can manage that, it’s beers all round! ️ -
Hurricane Ida
Cold Winter replied to summer blizzard's topic in Hurricanes, Cyclones and Extreme weather worldwide
Landfall expected late afternoon/early evening BST, early afternoon ET (US). At the moment, track favours the hurricane making landfall just west of New Orleans. A big test for the city’s upgraded flood defence system, but all the other smaller communities nearby along the Gulf Coast are sadly almost certain to be inundated. Storm surge is already being reported as far away as Alabama.- 270 replies
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- gulf coast hit.
- cayman islands
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From what I’ve heard from mates back in East Yorkshire quite a few low lying places have done well. We have 7cm in Malton. That’s on the level in an area that hasn’t been exposed to the sun or any drifting. We’ve had no other settling snow this winter except for a dusting so I’m very pleased with that!!
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Haven’t had chance to post but we’ve had a great couple of days. Frequent snow showers both yesterday and today and woke up to a good top-up this morning. Some of the showers have been really beefy with huge flakes. And to think some people were suggesting a couple of days ago that North Yorkshire could miss out! Doesn’t look like the amber warning further south was justified based on what I’ve seen on the radar. These events are so fickle when modelled it really does come down to radar watching.
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The colder air is filtering N to S (well, NE to SW) so the snow line will gradually reduce in that kind of pattern I assume. Low lying inland areas will be a bit quicker than coastal areas of course. While your air is transitioning from milder to colder you'll have to rely on the heavier bursts for some evaporative cooling to bring the snow line down - but by tomorrow we'll all be in snow-conducive air.
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Wow, so many nerves here this morning! Rain today was never meant to start turning to snow until later today over higher levels and then low levels by tonight, becoming showery. The MetO text forecast mentions accumulations through tonight and tomorrow to Tuesday. Radar and lamp post watching will be key from tonight onwards.
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The text forecast is a lot better than the computer generated app symbols for the general picture of what’s going to happen when. This is tomorrow for Yorkshire & Humber: ”Morning showers will more widely turn to snow in the afternoon, becoming less frequent by evening, but some will persist overnight. Feeling increasingly cold in strong easterly winds.”
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Yep, pleased with what the GFS is showing. It handles convection reasonably well in my opinion. Usually in these scenarios it shows showers across the sea and up to the coast = showers along the coast. The fact that it’s showing snow over most of Yorkshire suggests they should push inland reasonably well. My only concern is how long it’ll take us further east especially to see settling snow. I’d love to see some lying snow on Sunday but wonder if I might have to wait until Sunday night for some heavier showers to come along to give us our first proper covering of the winter.