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Southeast February Mid/Long Range Discussion II


Marion_NC_WX

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Well that's a start! Thanks Marietta!

Out to 120, the Arctic dumped it's severe cold into Eastern Canada and it's headed SE but it looks to skim the North Northeast. The High pressure system is cold but not really that cold in the central states. My maps are not of great quality but I don't think we have a Gom Low unless it's pertty weak. Someone with precip maps will have to tell you for sure. But here is the 850's at 120.

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144: West coast ridging is nearly to the north pole. But the PV is not moving much and the High pressure and cold temps are fading in the US. Not much of a push of cold form Canada but there is quite a decent cold pool up there. If I had to say one way or the other it looks like not much at this time but the later frames may tell a different story.

168: Man things look to be getting amped up and a nice slug of cold looks poised to drop into the CONUS.

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I wish Burger or someone else with paid Euro maps were here. Look at the 700mb RH on this map at 168. It's the OP so another bit of salt considered.

Ya i agree. If this system is coming out and the cold air dives in then this could be very interesting but still aways out but nice to see changes in under 200 hours.

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Ya i agree. If this system is coming out and the cold air dives in then this could be very interesting but still aways out but nice to see changes in under 200 hours.

All best guesses here but I think the cutoff is falling apart and moving east and I think it's just a tad too slow to meet the cold.I'll say again though I don't have enough info to really say that.

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By 240 the cold is sliding off the coast and the serious cold in near Maine. The Pacific has an endless stream of cutoffs/ULL's is seems that keep knocking down the ridge and flattening things out. If we had some blocking to lock in the cold I'd be a lot happier.

Overall compared to the 12Z, the cold/trof is not as deep and the PV is shifted Northeast ish. at 240 Greenland is as cold as ever this season with no blocking NAO to be found.

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By 240 the cold is sliding off the coast and the serious cold in near Maine. The Pacific has an endless stream of cutoffs/ULL's is seems that keep knocking down the ridge and flattening things out. If we had some blocking to lock in the cold I'd be a lot happier.

Overall compared to the 12Z, the cold/trof is not as deep and the PV is shifted Northeast ish.

can't be upset with the last 24 hours worth of runs....HUGE improvement
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By 240 the cold is sliding off the coast and the serious cold in near Maine. The Pacific has an endless stream of cutoffs/ULL's is seems that keep knocking down the ridge and flattening things out. If we had some blocking to lock in the cold I'd be a lot happier.

We may have blocking on the Euro by that time frame Still not bad of a run from what i can gather, Headed in the right direction at least.

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The 0z Euro still shows plenty of potential w/ the pattern and it is in the ten day window. The various features will change since it is so far out, but the pattern looks interesting. Still not bad. But we've seen this carrot before. Again, the NAO will have to go negative and stay there before I'll feel good about things. Before, I had been looking for the pattern to flip. It still could, but I'm growing less convinced that the pattern will flip to the point that it can benefit everyone. In three weeks, climo severely limits many. Now, I'm looking for one good storm. The pattern itself looks like it could produce but take everything w/ a grain of salt unless w/in five days.

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It's almost as if the GFS and Euro exchanged looks from their 12z runs:

Old:

test8-5.gif

New: test8.gif

The GFS, w/ its four pockets of cold air, looks more reasonable at 0z FWIW. But this is going to change every run until it gets closer. Edit: So does the Euro. That looks like the pattern for that time frame. The heights in the North Atlantic vary slightly in placement, but that is having big impacts on the weather in the eastern US.

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