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Discussion-OBS slippery plowable moderate to high impact snowstorm with many delays near I95 and inland btwn 10AM Sun 1/19-4AM Mon Jan 20. R/S line uncertain near and east of I95 - parts of LI may be limited snowfall of around 1"?


wdrag
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Will make a decision on thread wording (probably removing doubts for Sunday evening) for 19-20 at 430P, and I see 00z/16 ECAI NOT mirroring the too fast 00z/16 EPS for the 22nd.  That latter one still undecided but likely just northern fringe at worst here late 22 or 23.  Beyond that on the bigger se USA threat, just not sure except WSSI-P is big on it being a large scale storm se USA up to NJ. Have a day -my last til 430

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Both the Google Graphcast and ECMWF AIFS show about 4" for me Sunday starting mid afternoon.  They have both been very good 4 days out this season.  The verification data on the ECMWF website is clear, ML models are superior to numerical models in the medium range.  

Waiting for and looking at each new operational model run is enjoyable (it reminds me of my friends that trade penny stocks or make sports bets), but the practice is obsolete.  Ensembles have been around a while, and MLs are just getting started.  

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3 minutes ago, EWR757 said:

Both the Google Graphcast and ECMWF AIFS show about 4" for me Sunday starting mid afternoon.  They have both been very good 4 days out this season.  The verification data on the ECMWF website is clear, ML models are superior to numerical models in the medium range.  

Waiting for and looking at each new operational model run is enjoyable (it reminds me of my friends that trade penny stocks or make sports bets), but the practice is obsolete.  Ensembles have been around a while, and MLs are just getting started.  

I would love to see the h5 scores on the AI model. It has locked into the Sunday event and hasn’t wavered 

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7 minutes ago, Allsnow said:

Can we sign for that 06z gfs run now? 

I assume you're referring more to the 1/24 possible event not the 1/19 event, which is nice, but not spectacular for our area.  I get it, but I'd way rather get snow like the Euro/AIFS are showing for 1/19 and then hope for something 5 days later.  

sn10_024h-imp.us_ma.png

sn10_024h-imp.us_ma.png

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2 hours ago, MJO812 said:

Wow euro

IMG_8150.png

This would be great let's keep it here. 

Thanks for posting the snow maps as well as the surface depiction maps, as they are very helpful.

Great to see the models are starting to come closer together. Thermal profile review will start to come into play, hopefully the Canadian suite is a bit too West and warm.

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18 minutes ago, MJO812 said:

 

6789178149520.png

678917a880b22.png

I've asked several times if there are snowmaps for the AIFS (they're not on Pivotal or TT, so one has to guess from temp/precip maps) and no replies, lol, so nice to see this map, thanks; wonder if WeatherBell has them.  As this model has been performing quite well this winter, we might need you StormVista folks to post these maps.   :>)

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3 minutes ago, RU848789 said:

I've asked several times if there are snowmaps for the AIFS (they're not on Pivotal or TT, so one has to guess from temp/precip maps) and no replies, lol, so nice to see this map, thanks; wonder if WeatherBell has them.  As this model has been performing quite well this winter, we might need you StormVista folks to post these maps.   :>)

Weatherbell does not have them for the AI 

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  • wdrag changed the title to Discussion-OBS slippery plowable moderate to high impact snowstorm with many delays near I95 and inland btwn 10AM Sun 1/19-4AM Mon Jan 20. R/S line uncertain near and east of I95 - parts of LI may be limited snowfall of around 1"?

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