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January Medium/Long Range: A snowy January ahead?


mappy
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10 minutes ago, mitchnick said:

Rgem looked pretty good at the end. We're seeing a positive trend at least, whether modest or strong, it's positive. 

RGEM missed the boat on the initial NS wave but its amplifying the STJ and second but weaker NS SW more...could be making a run at a different path to a good result, I guess we will see when the GGEM comes out soon but my concern would be that initial NS wave if it misses the chance to phase and ends up out in front could flatten the flow too much to allow the wave to climb until its too late.  But we've not seen that path (more amplified STJ and phase with the next SW) on guidance to test it yet. 

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A thought on the lead time here...this is not a simple HECS threat we get sometimes in a split flow nino pattern where the NS is outta the Fng way and we can watch some juiced up STJ wave slowly come at us from a week away and nothing in the way to much it up.  This is complicated with multiple wave interactions and is way more likely to not show up until a shorter lead time.  Dec 2009 involved more NS interaction, but not nearly as much as complicated or noisy as this...and that was an example where there were hints and potential but we didnt start to get details or feel locked in until inside 100 hours. 

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A thought on the lead time here...this is not a simple HECS threat we get sometimes in a split flow nino pattern where the NS is outta the Fng way and we can watch some juiced up STJ wave slowly come at us from a week away and nothing in the way to much it up.  This is complicated with multiple wave interactions and is way more likely to not show up until a shorter lead time.  Dec 2009 involved more NS interaction, but not nearly as much as complicated or noisy as this...and that was an example where there were hints and potential but we didnt start to get details or feel locked in until inside 100 hours. 

I looked at euro enso forecast. We could be trying the Nino thing again next year with hopefully less blowtorch
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Lastly, we could get lucky with the GFS super bomb solution, but historically this type of scenario, even if it does come together...is more likely to have MECS not HECS level results.  Too much can go wrong for our area to max out into HECS territory with these unless we get super lucky.  Maybe we do, we've been super unlucky plenty lately.  But if we end up with a 4-8 or 6-10" snowstorm from this type of setup that should be taken as a total run through the street naked win here...regardless of if some lucky shmucks somewhere to our northeast get 20". 

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2 minutes ago, psuhoffman said:

Lastly, we could get lucky with the GFS super bomb solution, but historically this type of scenario, even if it does come together...is more likely to have MECS not HECS level results.  Too much can go wrong for our area to max out into HECS territory with these unless we get super lucky.  Maybe we do, we've been super unlucky plenty lately.  But if we end up with a 4-8 or 6-10" snowstorm from this type of setup that should be taken as a total run through the street naked win here...regardless of if some lucky shmucks somewhere to our northeast get 20". 

And with this week's weather we'd have snow on snow.

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3 minutes ago, Ralph Wiggum said:

If I had to split hairs, only trend i don't care for is last 4 gfs runs the Southwest energy is a little slower each time to come out. May not make a huge difference.

it does if it allows the NS to get out ahead instead of diving in behind.

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