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December map, observations, punch and pie

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Blocking gets going on all the models

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1 hour ago, Keith P.A said:

So funny NWS in Harrisburg has a high of 58 degrees on the 26th..umm might have to adjust that..GFS has 30 degrees with an ice storm

1 hour ago, Keith P.A said:

So funny NWS in Harrisburg has a high of 58 degrees on the 26th..umm might have to adjust that..GFS has 30 degrees with an ice storm

The NWS out of Penn state is beyond conservative and last minute to update their forecasts.

Eps is also south

6948df2996f53.png

NAO doing its dirty work for post Xmas, also COLD HP HOLDING ITS GROUND, ALSO ON THE EURO

gfs_mslp_pcpn_frzn_us_19 (2).png

gfs_mslp_pcpn_frzn_us_20.png

gfs_mslp_pcpn_frzn_us_21.png

gfs_mslp_pcpn_frzn_us_22.png

Icon well south now

prateptype_cat_icon-imp.us_ne.png

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NWS OKX discussion (just for reference): 'With the warm front north of the region Friday temperatures will be

as much as 8 degrees above seasonal normals, however, no records are

likely, with records mainly in the lower to mid 60s.

High pressure to the north will push the front back south Friday

night, with the front then possibly stalling in the vicinity. A

series of frontal waves then move along the boundary with chances

of mainly light rain into the upcoming weekend.'

The 6Z GFS is so far south it's congrats BWI. NY metro still gets snow, but it's on the northern edge.

AI gfs also south

Its an outlier compared to the ensembles

6949228ee4c2b.png

  • Author

We want this to start slightly S.

The correction is usually poleward as we get closer

The EPS and AI loves the SW

Gefs

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2 minutes ago, THE GREAT Ben Solo said:

We want this to start slightly S.

The correction is usually poleward as we get closer

The EPS and AI loves the SW

I hope you are right. It is just starting to give March 2014 vibes, but there isn't a PV lobe in Maine this time, so that's a big difference.

1 minute ago, Analog1888 said:

I hope you are right. It is just starting to give March 2014 vibes, but there isn't a PV lobe in Maine this time, so that's a big difference.

I think about 3 just missed the NYC area that month to the south.

AI Euro slightly more south

694928ed40fbe.png

6z euro also colder

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  • Author

The models were never going to handle the block correctly

eps_z500a_nhem_fh192_trend.gif

  • Author

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6z eps slightly colder and south of 0z eps

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  • Author

My period was the 27th - 30th

I suspect the 29th will correct south as well is the coming days would round out the period nicely

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