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Weekend Storm Discussion 2/18-2/19


stormtracker

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Man oh man oh man. I can't believe we have in a matter of 24 hours gone from suppressed, to fringe light snow, to 992 MB Bomb and rain - and our 50/50 is getting weaker and weaker every run. I liked this better when it was suppressed, although I guess some wind and heavy rain from a 992 mb chesapeake bay storm might be somewhat interesting.

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There will be no one left in this subforum to enjoy that if this run plays out as depicted.

It's probably a mistake to attach high expectations for a cold snowy outcome at this point, given the preceding pattern winter-to-date, and lack of run to run stability in the best global models. 4-5 day out simulations are just that, and are bested viewed with a sense of detachment, even this evening's euro

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FWIW, here is the 00z GGEM solution tonight (to compare it to the GFS Solution)

108 -- SE AL/SW GA border at 1003mb

120 -- off HSE by about 50-100 miles at 999mb

132 -- wait for color

144 -- not out yet

There is a 50/50 low at 120 and a 1029 H in W Quebec as well at 120

Northern edge of the precip shield is over RIC at 108 - this one should be coming further up the coast than 12z.

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If you run a loop at 500mb for the N PAC on the new 00z GFS, you'll see why the MJO is our friend. The propensity for a NE PAC ridge and NW PAC trough will allow waves to cut more southward than eastward across the western CONUS, allowing room for this potential phase in the eastern 2/3s.

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If you run a loop at 500mb for the N PAC on the new 00z GFS, you'll see why the MJO is our friend. The propensity for a NE PAC ridge and NW PAC trough will allow waves to cut more southward than eastward across the western CONUS, allowing room for this potential phase in the eastern 2/3s.

Now lets just hope it phases with the correct spoke of energy around the 50/50 otherwise its rain or OTS ;)

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Now lets just hope it phases with the correct spoke of energy around the 50/50 otherwise its rain or OTS ;)

The bigger players can only take you so far sometimes, true...

The other complicating issue is something that hasn't been talked about which is the wave dropping in from the NW Territories / Yukon. If this trends faster, it will help to compress the flow even more in Canada (buckling already from 50-50). It is not a big deal but it is something that may cause further alterations.

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