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February Medium/Long Range Thread


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Just now, LeesburgWx said:

Wow, just got caught up and am stunned we have every major model on board in some capacity. We say it all the time, but the (say it with me now) “big ones are always sniffed out early.” That Euro run is legit and CMC / ULMeT looks great. GFS is close too. What a night!

Even the dang navgem was brewing something up at the end of its run. Woof!

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Listen Ji… we’re not pinning your 2/20 thread yet. Gotta keep the good juju alive
Last week you all deleted my storm thread and we lost 5-9 inched soon after

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5 minutes ago, Ji said:

The 00z tomer burg says yes. Stop being scared of threads

https://x.com/burgwx/status/1890270123577209015?t=PHTsCJAORvIKG7-7--c3mg&s=19

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Ok, you made the earliest storm thread ever and it might happen. Please don't jinx yourself. You are sitting high beside the throne right now with @psuhoffmanin the king seat. Enjoy it. This may be your americanwx crowning/defining moment.

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Ok, you made the earliest storm thread ever and it might happen. Please don't jinx yourself. You are sitting high beside the throne right now with [mention=2304]psuhoffman[/mention]in the king seat. Enjoy it. This may be your americanwx crowning/defining moment.
This is psu storm man. I'm not worthy to be the ground he walks on

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Just don't fall into the bs about the storm being 96 hours and you'll expectations will be set.  It's not set in stone dude.
How many hours out is it in your opinion?

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I'm a bit skeptical of a big one riding on the heals of this.. This is at your -5 AO 

hrrr_conus_04800_sim_radar_1km.gif

Don't get me wrong the Pacific turns favorable.. -EPO/+PNA is definitely what we want, but I think a 4-10" event is more likely than 12-20".  I can see something moving more W->E vs S->N. The pattern is actually pretty progressive, it's just a matter of really good timing, having a trough right under the Canadian block on models tonight. They sharpened the trough, but not necessarily the N. Hemisphere fundamentals. I mean it could happen like that, but there's more margin of error imo, and less high potential too without an east-pos-PNA and further SW 50/50 low.

Don't get me wrong, I think there could be a snowstorm. But I'm not buying the MECS just yet. 

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I'm a bit skeptical of a big one riding on the heals of this.. This is at your -5 AO 
hrrr_conus_04800_sim_radar_1km.gif
Don't get me wrong the Pacific turns favorable.. -EPO/+PNA is definitely what we want, but I think a 4-10" event is more likely than 12-20".  I can see something moving more W->E vs S->N. The pattern is actually pretty progressive, it's just a matter of really good timing, having a trough right under the Canadian block on models tonight. They sharpened the trough, but not necessarily the N. Hemisphere fundamentals. I mean it could happen like that, but there's more margin of error imo, and less high potential too without an east-pos-PNA and further SW 50/50 low
Don't get me wrong, I think there could be a snowstorm. But I'm not buying the MECS just yet. 

That Saturday wave is riding “on the heels” of a storm that just dropped 8-10” of snow in southern MD on Wednesday. 4 days after Saturday is plenty of separation for another storm to brew and for the necessary pieces to move into place. Yes, it has higher fail risk than a big southern stream gulf low in a niño for instance… but it’s certainly doable. 4 major models all showed how tonight. Betting on 12-20” in a niña is never a safe bet by any means, but it’s also not impossible given the setup. Timing is everything though.
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This moisture sure is pretty though
nam_conus_084_sim_radar_1km.gif

Perfect example. 60-72 hours AFTER this point is plenty of time for the storm in Canada to move out and for the storm out west to get its act together. We have seen large snowstorms follow warmer rainy storms that drop the boundary south numerous times. Skepticism is warranted, especially for a 12+” outcome in a niña… but if the rationale is wave spacing, that’s not it. I do agree about the path to failure if it were to happen - a progressive solution that hits east if timing isn’t just right. We’ll see. If models are still honking come Sunday, it’s very much game on. We DO get lucky in niñas from time to time, and it seems to want to snow this year.
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11 minutes ago, jayyy said:


That Saturday wave is riding “on the heels” of a storm that just dropped 8-10” of snow in southern MD on Wednesday. 4 days after Saturday is plenty of separation for another storm to brew and for the necessary pieces to move into place. Yes, it has higher fail risk than a big southern stream gulf low in a niño for instance… but it’s certainly doable. 4 major models all showed how tonight. Betting on 12-20” in a niña is never a safe bet by any means, but it’s also not impossible given the setup. Timing is everything though.

True, but it is about "threading the needle" a little bit, as we need a perfectly timed wave, which models showed tonight, but I'm just saying there is more potential variance than normal between now and the event.. It's not being held constant by any particular thing in the upper latitudes, except the remains of the -AO block over Canada. 

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9 minutes ago, jayyy said:


Perfect example. 60-72 hours AFTER this point is plenty of time for the storm in Canada to move out and for the storm out west to get its act together. We have seen large snowstorms follow warmer rainy storms that drop the boundary south numerous times. Skepticism is warranted, especially for a 12+” outcome in a niña… but if the rationale is wave spacing, that’s not it. I do agree about the path to failure if it were to happen - a progressive solution that hits east if timing isn’t just right. We’ll see. If models are still honking come Sunday, it’s very much game on. We DO get lucky in niñas from time to time, and it seems to want to snow this year.

It's not about wave spacing, it's about having a nearly perfectly timed wave to get the high outcome.  That map shows that there's a lot of moisture though. I just think the high potential is capped, given the larger 500mb pattern. 

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2 hours ago, Ji said:

When are you going to analyze all this drama?

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Analyze the drama? I’ve got a Masters degree in Counseling. So here goes.
 

 The Polar Vortex split and potential of a SECS vs HECS is having a serious impact on the mental well-being of the majority of this forum, especially those in Loudoun County, leading to Winter Bipolar Disorder and increasing symptoms of SAD. Recommend sleep, not jumping the cliff before the Euro drops a HECS, and definitely get an increase in your Lithium. 

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24 minutes ago, Stormchaserchuck1 said:

It's not about wave spacing, it's about having a nearly perfectly timed wave to get the high outcome.  That map shows that there's a lot of moisture though. I just think the high potential is capped, given the larger 500mb pattern. 

We have a 150 year body of record that says it’s hard to get 12” storms in DC/Baltimore.  So yeah.  I agree. 

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1 minute ago, weatherkyle said:

We have a 150 year body of record that says it’s hard to get 12” storms in DC/Baltimore.  So yeah.  I agree. 

We could have a buckled mid latitude jet though.. if that were the case you could say, 1/3 odds, 1/2 odds or whatever.. but it's not an ideal jet stream situation we have as waves west and east of the storm are progressive. Just makes the timing needing to be just right. 

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27 minutes ago, Stormchaserchuck1 said:

0z GFS and 6z NAM completely different from each other at 84hr.. GFS dug part of the Polar Jet a lot further SW.. NAM has less phasing.  NAM not the best model though.

Confidence increases when all the globals and ensembles show an intense storm.  Exact track won't be set in stone as usual until we are within a few days.

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