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Late November/Early December upcoming wx.


CoastalWx

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One thing that confuses me. Kev got 12.5 and he was dry slotted for quite a long time while BDL was ripping for hours, how do they end up with less than Kev, for that matter how does Windsor? Ever get any totals from Stafford, Union?

If you have ten guys measuring the same snow in a 500 x 500' area they'll come up with ten different totals. I'd love NOAA to run an experiment of this type because it would help us to smooth out the variations.

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One thing that confuses me. Kev got 12.5 and he was dry slotted for quite a long time while BDL was ripping for hours, how do they end up with less than Kev, for that matter how does Windsor? Ever get any totals from Stafford, Union?

They didn't end up with less...they are still determining the 10/30 total. Probably like 3" which gives them 15"...which sounds reasonable based on other reports.

Elevation did matter in the first half of the storm especially. It was obviously eventually overcome but early on it did matter...and even later where the higher areas had a slightly more powdery snow...esp west of BDL.

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One thing that confuses me. Kev got 12.5 and he was dry slotted for quite a long time while BDL was ripping for hours, how do they end up with less than Kev, for that matter how does Windsor? Ever get any totals from Stafford, Union?

The total is only 10/29... the 10/30 total is on its way.

Collinsville had 18.9" total and they were in better banding than BDL. So I think BDL in all likelihood picked up 16". We'll never know what they actually got.

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The total is only 10/29... the 10/30 total is on its way.

Collinsville had 18.9" total and they were in better banding than BDL. So I think BDL in all likelihood picked up 16". We'll never know what they actually got.

500+ feet definitely didn't hurt.

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Isn't he 540 feet or something?

That is a big difference than like 180 feet that BDL is, no?

Yeah the poster is at 540... but Collinsville is in a valley with some decent hills on either side.

BDL being further north probably helped offset that a bit... but between the somewhat better banding to the southwest and elevation I think shaving 3" off the Collinsville ob makes sense.

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Yeah the poster is at 540... but Collinsville is in a valley with some decent hills on either side.

BDL being further north probably helped offset that a bit... but between the somewhat better banding to the southwest and elevation I think shaving 3" off the Collinsville ob makes sense.

Yeah probably...I guess we'll never know for sure. All we know is that 20"+ was ridiculous. Whether it was 14.5" or 16.2" we can only speculate.

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Yeah the poster is at 540... but Collinsville is in a valley with some decent hills on either side.

BDL being further north probably helped offset that a bit... but between the somewhat better banding to the southwest and elevation I think shaving 3" off the Collinsville ob makes sense.

I have no horse in this race, but 3" for 300 vertical feet sounds about right...though its hard to imagine much more than that for a difference between 200ft and 500ft. I've seen a lot of snowfalls and varying elevations, and unless you are literally on the rain/snow elevation line, 300ft of difference won't make all that much of a increase/decrease in snowfall.

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Yeah probably...I guess we'll never know for sure. All we know is that 20"+ was ridiculous. Whether it was 14.5" or 16.2" we can only speculate.

Yeah the 8" or whatever after 1 a.m. was an error.... thankfully that has been corrected.

I do think that there were very few accurate and properly measured observations around BDL. There was a tremendous gradient in a very small area from areas just east of the river to the hills to the northwest. 20" in Granby and 25" in Hartland which is only 10-15 miles west of BDL.

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I have no horse in this race, but 3" for 300 vertical feet sounds about right...though its hard to imagine much more than that for a difference between 200ft and 500ft. I've seen a lot of snowfalls and varying elevations, and unless you are literally on the rain/snow elevation line, 300ft of difference won't make all that much of a increase/decrease in snowfall.

Yeah it appears there wasn't a huge difference. Would it mean an inch? probably. That when coupled with some better banding southwest I think shaving 3" off makes sense.

I do think that there can be some substantial differences in totals with this storm based on how measurements were made.

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I have no horse in this race, but 3" for 300 vertical feet sounds about right...though its hard to imagine much more than that for a difference between 200ft and 500ft. I've seen a lot of snowfalls and varying elevations, and unless you are literally on the rain/snow elevation line, 300ft of difference won't make all that much of a increase/decrease in snowfall.

It depends on the type of thermal profile...on 2/24-25/10, I had nearly 12" in ORH at 900+ feet while weatherMA and ma_blizzard in Shrewsbury both at around 450-500 feet had like 4-5"...so a difference of like 7-8" over 450 feet.

Early on in the storm, I bet Collinsville at 540 feet had a good head start since it was a steep lapse rate in the lowest levels. It evened out later in the storm, but it still matters. The mesoscale banding as Ryan said certainly makes a difference too, but I've seen just 300-400 feet make a huge difference before...it just takes the right low level thermal profile.

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It depends on the type of thermal profile...on 2/24-25/10, I had nearly 12" in ORH at 900+ feet while weatherMA and ma_blizzard in Shrewsbury both at around 450-500 feet had like 4-5"...so a difference of like 7-8" over 450 feet.

Early on in the storm, I bet Collinsville at 540 feet had a good head start since it was a steep lapse rate in the lowest levels. It evened out later in the storm, but it still matters. The mesoscale banding as Ryan said certainly makes a difference too, but I've seen just 300-400 feet make a huge difference before...it just takes the right low level thermal profile.

Do you really have to keep bringing that storm up? laugh.gif

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I have no horse in this race, but 3" for 300 vertical feet sounds about right...though its hard to imagine much more than that for a difference between 200ft and 500ft. I've seen a lot of snowfalls and varying elevations, and unless you are literally on the rain/snow elevation line, 300ft of difference won't make all that much of a increase/decrease in snowfall.

Oh I really really really beg to differ on that down here near the marine layer. Tons of examples over the years.

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If it has any support at all from the Euro the NAM can be safely disposed of like a used jimmy.

The GFS is awfully attractive.

Going by tonights rain, The GFS qpf matches up very well as it is pretty much spot on with the total for here as compared to the NAM, I alreaday am tossing it

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