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Upstate/Eastern New York


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This is a classic distribution NE Bomb, like Syrmax said, but it feels like it’s been a while! 
Still see things shifting SE a touch in the end (per usual). At this point, Syracuse is golden for warning amounts. 9z SREF ticked down to 10”. 
I’m not biting on Roc for this one. 
We gonna throw numbers out? 

B0CB39CC-EDEA-4885-94CC-858D53549466.png

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The primary impacts of a winter storm will be felt during the day
Sunday when an area of mixed precipitation moves from southwest to
northeast across the region. A warm layer of about +4C will quickly
change precipitation to freezing rain across the Southern Tier since
surface temperatures will still be in the upper 20s Sunday morning.
As stacked low pressure centered near southern Lake Michigan
transitions to a coastal low, the LLJ ahead of this system will
weaken as it moves across our region. This will weaken the push of
warm air aloft with the Buffalo to Rochester area likely to be a
transition zone with sleet and freezing rain before thermal profiles
support all (or mostly) snow northeast of Rochester. The
precipitation will only last 3-6 hours, with the greatest impact on
the Buffalo/Rochester metro areas Sunday morning through early
afternoon. Snow will last through the afternoon hours east of Lake
Ontario. 00Z model guidance is in good agreement for Sunday, with
only minor differences in timing and thermal profiles. Latest
consensus does support slowing the timing slightly. Despite
consensus QPF of around a half inch across the Niagara Frontier,
much of this will fall as sleet. This is why the ice forecast is not
higher even though surface temperatures should remain below freezing
for most of the day. Also, expect minimal along the Lake Erie
shoreline due to downsloping and warmer temperatures off the
Chautauqua Ridge.

The upper level low will track southeastward across West Virginia
Sunday night, while the surface low `jumps` to the Jersey coast.
Lacking a clear focus precipitation will taper off during the first
half of Sunday night. Even though 850mb temperatures will only be
around -1C, thermal profiles are below freezing with deep moisture
so expect any precipitation to be mainly snow.

There is lower confidence in late Sunday night into Monday since
model agreement deteriorates. Our region will be on the northwestern
fringe of a developing coastal low, with some models effectively
transporting Atlantic moisture westward into our region while others
keep the bulk of this just to our east. Either way, snow will re-
develop across most of the area, but amounts will depend on the
evolution of the coastal low and associated mid level jet. Snow
accumulation should be light across far Western New York, an inch or
less. However, east of Rochester several inches of snow are
possible. Based on this uncertainty, will maintain the Winter Storm
Watch with forecast amounts right at critical thresholds. Also kept
advisory headlines, but did break out Monroe, Wayne, and Ontario
counties since precipitation will start later here and will be
primarily snow. It`s also possible this advisory may need to be
extended depending on the Monday portion of the storm
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I cant believe how many ppl are concerned with these horrific precip output maps. I'd bet big money too prove them complete garbage, especially the horrible Kuchera method.

Tonight's 00z I will save every precip output map from every known model out there, even the French one and Japanese too and we'll see which is closest to the actual event!

Sent from my SM-G970U using Tapatalk

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