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Dec 5-6th clipper threat


George001
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Just now, CoastalWx said:

I don't think they have the confidence to light up a large area for a warning. I'm also skeptical of many areas getting that much. Maybe if everything works out a few areas could.

Western spine of ORH hills have a decent shot but they’ll only issue warning if 50% of a given area is high confidence for 6”+. I don’t think the area would be large enough. Could be a situation where a town like Barre MA or Oakham or even North Brookfield gets 6” and Paxton MA at higher elevation gets 4” because of the terrain and SW flow. I think there’s def going to be a terrain gradient in the QPF too. 

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1 minute ago, ORH_wxman said:

Western spine of ORH hills have a decent shot but they’ll only issue warning if 50% of a given area is high confidence for 6”+. I don’t think the area would be large enough. Could be a situation where a town like Barre MA or Oakham or even North Brookfield gets 6” and Paxton MA at higher elevation gets 4” because of the terrain and SW flow. I think there’s def going to be a terrain gradient in the QPF too. 

Yeah that's what I mean. Maybe those areas like you mentioned above 800' may do it. Certainly weenie of the year in Templeton could.

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The colder trend notwithstanding, I still like my map from late last night. Somewhere in the NE hills jackpot with a 4 or 5 but most are probably 2-3”. Lower elevations struggle but get an inch or two. Most in southern CT get a measurable coating overnight I think. SE CT struggles to accumulate anything.

0V0VmS6.jpeg

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RAP and HRRR continue to cool for eastern areas overnight. Pretty good burst of moderate snow for several hours right into Boston on both models. Prob not much accumulation right in city but just outside could see some. 

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18 minutes ago, ORH_wxman said:

RAP and HRRR continue to cool for eastern areas overnight. Pretty good burst of moderate snow for several hours right into Boston on both models. Prob not much accumulation right in city but just outside could see some. 

Temps here in my valley location have dropped from 38F to 34F with the loss of daytime heating; maybe this goes towards a colder scenario here?

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1 minute ago, Modfan2 said:

Temps here in my valley location have dropped from 38F to 34F with the loss of daytime heating; maybe this goes towards a colder scenario here?

It's warming aloft too. Like at 950 to 900. So that cold won't really be a proxy I don't think, but you also could flip to SN like the HRRR has near dawn. 

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Hello, its been a while. I've been working on some stuff all spring and summer this year that think a lot of folks will be interested in (esp if you're in CT) that i will share soon.

Here's our final map for tonight/tomorrow. All new graphics for the new season...lets hope its a good one.

12_04.24_jdj_v3_sne_snowfall_forecast_update.thumb.jpg.a7e3be57280151a07b9c351eaa6f7afa.jpg12_04.24_jdj_v3_tri_state_snowfall_forecast_update.thumb.jpg.1623fde7f50012503357eb8b98c84724.jpg12_04.24_jdj_v3_ct_hi_res_snowfall_forecast_update.thumb.jpg.548cb03f78f09857553f9ae5c21646af.jpg

 

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31 minutes ago, The 4 Seasons said:

Hello, its been a while. I've been working on some stuff all spring and summer this year that think a lot of folks will be interested in (esp if you're in CT) that i will share soon.

Here's our final map for tonight/tomorrow. All new graphics for the new season...lets hope its a good one.

12_04.24_jdj_v3_sne_snowfall_forecast_update.thumb.jpg.a7e3be57280151a07b9c351eaa6f7afa.jpg12_04.24_jdj_v3_tri_state_snowfall_forecast_update.thumb.jpg.1623fde7f50012503357eb8b98c84724.jpg12_04.24_jdj_v3_ct_hi_res_snowfall_forecast_update.thumb.jpg.548cb03f78f09857553f9ae5c21646af.jpg

 

Hopefully it’s closer to the 6”!

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495. Thermal
profiles/soundings indicate that temps should be cold enough in this
region for mainly snow or rain quickly changing to snow. Given
marginal boundary layer temps...greater impacts/snow accumulations
will be in the higher terrain. Strong low level southwest flow will
also result in some mesoscale enhancement along the western side of
the Berks, Worcester Hills and northeast CT Hills. This can be seen
in a lot of the high resolution model guidance QPF fields. So while
the snow amounts should be elevation dependent to some
degree...expect to see the higher snow accumulations on the
western/upslope side vs the eastern side at the same elevations.

We continued the Winter Weather Advisory for western and central MA
and also include Tolland county to account for their higher
elevation. We generally expect 2-6" of snow to fall within the
Winter Weather Advisory with the greater of those amounts in the
high terrain...particularly on the western upslope side.
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