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Discussion-OBS snow event sometime between 06z Thu 2/20-12z Fri 2/21?


wdrag
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Maybe a met, or just someone with a better memory than me can chime in, but if memory serves, over the last twenty years, quite a few of our more memorable storms have been on our radar a week out, then were almost entirely lost, only to show up again with a vengeance a few days later.  And I don't say this as someone rooting for a storm to happen.  Normally I definitely would, but I'm supposed to be travelling Thursday.

 

 

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  On 2/15/2025 at 11:06 PM, BxEngine said:

Lets at least tell the truth, boxing day was nowhere near locked in. 3 days before it showed roughly what todays 12z gfs showed for us for thursday. Cmon people. 

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yup sorry misremembered the storm. meant to use boxing day as the example where it DIDNT happen. regardless if u go back and look at most serious KU's the ones which were OTS over and over at a small lead time are the clear minority.

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  On 2/15/2025 at 11:12 PM, NEG NAO said:

Feb 11, 1983 wasn't locked in till a day or so before.....

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That storm was not locked in until the afternoon of.  The LFM lost it on the night before.  I remember it very well.  The morning of nobody was predicting 12" for NYC, never mind 20".  I THINK maybe forecasts the morning of were in the 3-6" range.

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There was a storm earlier this year that had an almost identical progression to this (I'm almost sure it's @Stormlover74's avatar).

 

Models showed an absolute bomb for a few cycles despite a tainted ridge, and eventually it showed the ridge rolling over and the storm stayed wayyyyyy out to sea. 

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  On 2/15/2025 at 11:25 PM, Allsnow said:

18z euro further southeast. Confluence is stronger 

IMG_4854.png

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If I had to pick something positive from this run, it's that the storm is already so strong at that latitude.  

The 2015 storm that phased too late for us (and buried LI and New England) scarred me for life. 

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  On 2/15/2025 at 11:55 PM, jimbo073 said:

It wasnt locked in until Christmas day when warnings went up late

 

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Janice Huff was calling for 2 inches on the 23rd 11 PM broadcast.  So bad.  Nick at Fox and that other dude Lee Goldberg were looking at the GFS before going live and were starting to honk.  Now recall that 8 days out, boxing day was well advertised and then the models universally lost it.  A lot of people forget that. It was foretold.  Super rare and extreme case, but that is what went down.

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  On 2/16/2025 at 12:00 AM, cleetussnow said:

Janice Huff was calling for 2 inches on the 23rd 11 PM broadcast.  So bad.  Nick at Fox and that other dude Lee Goldberg were looking at the GFS before going live and were starting to honk.  Now recall that 8 days out, boxing day was well advertised and then the models universally lost it.  A lot of people forget that. It was foretold.  Super rare and extreme case, but that is what went down.

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In fact I recall the NWS offices were calling that GFS run a fluke due to convective feedback.  Wonder if others remember that.

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