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December Medium/Long Range Discussion


yoda
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Just now, NorthArlington101 said:

Congrats Smith Mountain Lake 

IMG_1110.thumb.png.dee59e232c6b9714472ae650e5435261.png

I mean its an obvious show to what happened if you look towards new England between the 0z and old 12z run. On our 0z run we just have a wall of confluence over New England which obviously is not gonna help our case in getting to move the storm north

1765195200-kgRphaaYjuA.png

12z for comparison has that same confluence just a causal couple hundred miles to the North (and even that suppresses the storm a bit too far south for some in our area). The other things that may help us is the confluence moving out of the area fast enough to not matter as 0z seems to have sped it up. 

1765195200-dmgo9bHrB8k.png

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8 minutes ago, stormtracker said:

lol, snow down to Raleigh

Obviously 6 days away and not the final solution but just seeing it...it's irritating that places to the south have seen a 6" snowfall more recently than we in Baltimore have. It's been an insane run of bad luck and we are so due to finally have one of these waves get far enough north.

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12 minutes ago, Chris78 said:

I'll post this here since it seems we're covering all threats in this thread.

I'd take chances heights end up higher in SE Canada than what's being shown 6 days out

gfs_mslp_pcpn_frzn_us_22.png

wow look at that we actually have a cold high up north I am intrigued now / cold air daming too been a while since we have seen the wedge!

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We got pieces in place on the ens run. Why sweat the run to run details on the op runs at this range- its literally going to change every run. Just no way to know how the NS vorticity will interact- but we have some digging energy taking the southern route to work with.

1765152000-oEPICeTuoIM.png

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1 minute ago, WxUSAF said:

Another potential warm up cancelled?

 

I'd be careful in cancelling any warmup because both ensembles try (operational word, "try") to send a trough into the western US giving us a bootleg -PNA. But any warmup appears to be only temporary. Maybe a week or so, or even a few days. When I play out the roll forwards from 11-15 to 6-10, that western trough retrogrades NW and instead pops up a flat ridge there instead, allowing cold air to move SE across the CONUS.

For example, comparing 360 hr from Nov 26 against 192 hr from today's EPS run, you can see what I'm getting at.

Old run (11/26):

eps_z500a_namer_61.thumb.png.ed2520875270a077e8ac471e7ea79912.png

 

New run (today):

eps_z500a_namer_33.thumb.png.4cacd04f0ca6d8727ba9e4f563052107.png

 

 

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I'd be careful in cancelling any warmup because both ensembles try (operational word, "try") to send a trough into the western US giving us a bootleg -PNA. But any warmup appears to be only temporary. Maybe a week or so, or even a few days. When I play out the roll forwards from 11-15 to 6-10, that western trough retrogrades NW and instead pops up a flat ridge there instead, allowing cold air to move SE across the CONUS.
For example, comparing 360 hr from Nov 26 against 192 hr from today's EPS run, you can see what I'm getting at.
Old run (11/26):
eps_z500a_namer_61.thumb.png.ed2520875270a077e8ac471e7ea79912.png
 
New run (today):
eps_z500a_namer_33.thumb.png.4cacd04f0ca6d8727ba9e4f563052107.png
 
 

Just in time for the 12/10-12/11 snowstorm threat. Lets reel it in
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