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Medium Range-Long Range thread


NaoPos

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Dt honking for the Friday storm on Facebook..... I really hope this one happens.... It's been several years since we've had a s&e special......last one was right around this time jan 2010......and we know what happened right after that.. Anyone else getting a bit of déjà vu?

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as for friday, pretty significant jump by the GFS:

gybevaha.jpg

On the left (0z GFS) you can see a lot more interaction with the northern stream as the confluence /PV relaxes a little bit. compared to the 18z on the left. very interesting trends...

Rgem only goes out to 48, but would be close for our southern locations.

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What also should be noted with the 18z gfs is at least half that precip is fr an inverted trof like signature which I wouldn't bet any money on if you are relying on that

 

totally don't buy that this far out...but the track would at least spit some snow over us.  The EC's look until last night was pretty bad for us.

 

BTW, EC loses the clipper at the surface in last night's run (shows 500 energy pushing in).  Ocean low in the Atlantic that misses wide right does develop.

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Dang, I missed a good discussion yesterday evening with HM et al. My $.02 is that I agree with HM for the most part. I've been thinking that any chance for a KU storm would be in the Jan 20-Feb 7 period based on the MJO stuff. I think I'm more worried than he is, though, that without tropical forcing, the -PDO/Nina-ish pattern will snap back into place and that we really need the MJO to stay dominant through Valentine's or so to have a shot for a good wintry period.

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Dang, I missed a good discussion yesterday evening with HM et al. My $.02 is that I agree with HM for the most part. I've been thinking that any chance for a KU storm would be in the Jan 20-Feb 7 period based on the MJO stuff. I think I'm more worried than he is, though, that without tropical forcing, the -PDO/Nina-ish pattern will snap back into place and that we really need the MJO to stay dominant through Valentine's or so to have a shot for a good wintry period.

Do you have any particular storms that stand out? I know people have talked about the one later next week, which the euro currently has rain for. Only issue I'm worried with that storm is if their is a lack of blocking and that pv retrogrades for a reload the storm could sneak up as it retrogrades and cut if no blocking is around.

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Do you have any particular storms that stand out? I know people have talked about the one later next week, which the euro currently has rain for. Only issue I'm worried with that storm is if their is a lack of blocking and that pv retrogrades for a reload the storm could sneak up as it retrogrades and cut if no blocking is around.

Nope, sorry. I'm only good at getting the large scale pattern. HM is the only one I know with skillful techniques for picking out particular threats in the medium range.

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I'm starting to get a bad feeling about storm potential during the upcoming cold wave.

Ehh, it's easy to be pessimistic, especially the i-95 corrdior between PHL-NYC .... but, we;ll have a window of opportunity, its just going to take a lot of patience.

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Dang, I missed a good discussion yesterday evening with HM et al. My $.02 is that I agree with HM for the most part. I've been thinking that any chance for a KU storm would be in the Jan 20-Feb 7 period based on the MJO stuff. I think I'm more worried than he is, though, that without tropical forcing, the -PDO/Nina-ish pattern will snap back into place and that we really need the MJO to stay dominant through Valentine's or so to have a shot for a good wintry period.

 

Well, I think we are equally worried since last week I've basically stated those concerns. And just like that, a warm shot is being modeled on the euro with no big storm Jan 25. This is exactly the PNA related issues I was worried about. Also, the PV doesn't shift east with the clipper bomb which ruins any KU setup either.

 

The big question is: how long does it take for the stratospheric anomaly / -AO to build down into the NAO domain?

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Well, I think we are equally worried since last week I've basically stated those concerns. And just like that, a warm shot is being modeled on the euro with no big storm Jan 25. This is exactly the PNA related issues I was worried about. Also, the PV doesn't shift east with the clipper bomb which ruins any KU setup either.

 

The big question is: how long does it take for the stratospheric anomaly / -AO to build down into the NAO domain?

Yep. And can it time right with the PNA > 0?

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Nope, sorry. I'm only good at getting the large scale pattern. HM is the only one I know with skillful techniques for picking out particular threats in the medium range.

 

Thanks. I appreciate that. There is nothing being modeled right now that I'm excited for but I still do think we get a window 2/5-2/10.

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