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February 11-12: Is it real?


stormtracker
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5 minutes ago, Ji said:

I just don’t get how we go from 10- 0

La Ninas of years past have produced eerily similar fails. Folks might remember that one mid Feb 2021 threat (also February 12th I think?) that had two waves to it. Guidance converged on both waves producing a flush hit from 100+hrs out and I think even the Euro within hour 70 had a widespread 6-12". However, the same 1st wave weak second wave too strong thing happened. It is excessively difficult to put stock in these multi-wave solutions when there is so much give and take to how the guidance places emphasis on either phase of the thing.

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1 minute ago, Terpeast said:

Ha, 2nd wave brings rain up north of NYC 

A couple days ago the runs that gave us 12-18” that second wave didn’t even exist. The models were totally wrong on which wave to amplify. They were keying on the wrong SW all along. Now they’re jumping on a SW they washed out before and it’s canibalizing our storm. 

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1 minute ago, psuhoffman said:

A couple days ago the runs that gave us 12-18” that second wave didn’t even exist. The models were totally wrong on which wave to amplify. They were keying on the wrong SW all along. Now they’re jumping on a SW they washed out before and it’s canibalizing our storm. 

Yeah given the trends by all models today, I think this goose is cooked. We might get lucky with a last minute north shift, but 2-4” is probably optimistic. 

I want to say the gfs is trying to set something up after 156 hr tho

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2 minutes ago, psuhoffman said:

A couple days ago the runs that gave us 12-18” that second wave didn’t even exist. The models were totally wrong on which wave to amplify. They were keying on the wrong SW all along. Now they’re jumping on a SW they washed out before and it’s canibalizing our storm. 

It all started when the Pacific dropsonde was ingested.

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Just now, Terpeast said:

Yeah given the trends by all models today, I think this goose is cooked. We might get lucky with a last minute north shift, but 2-4” is probably optimistic. 

I want to say the gfs is trying to set something up after 156 hr tho

Agreed.  I'm looking  forward to the possibilities  around the 20th :)

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1 minute ago, MDScienceTeacher said:

Are those dropsondes routine or do they only drop them during times of particularly active weather?

They don’t always do this, but I think they did it this time for other reasons we’re probably not interested in. 

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2 minutes ago, Terpeast said:

Yeah given the trends by all models today, I think this goose is cooked. We might get lucky with a last minute north shift, but 2-4” is probably optimistic. 

I want to say the gfs is trying to set something up after 156 hr tho

Oh none of this has changed my mind about what’s coming. I always liked later in Feb better once the blocking gets going and has time to impact the storm track. 

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18 minutes ago, psuhoffman said:

Unfortunately this run continues the trend that the further south wave 1 the further north wave 2. It’s a lose lose. There was a path to a win win if both waves split the energy just right. But a stronger wave 2 is the worse case scenario. 

See, this is why I jumped ship earlier today! Once I read what you and Heisy said, and saw the trends from 6z on, you could tell this was not a trend that was gonna come back. The precip on those 3 runs shrunk like wet paper! And how we role around here...a Day 2-4 shift like that we don't easily come back from. And your explanation makes sense about the models keying in on the wrong wave. Something to learn from...

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