Jump to content
  • Member Statistics

    17,603
    Total Members
    7,904
    Most Online
    ArlyDude
    Newest Member
    ArlyDude
    Joined

December 2017 Long Range Disco


Bob Chill

Recommended Posts

3 minutes ago, mitchnick said:

Gfs and Canadian were sweet runs if you enjoy futility. Since I'm still here, apparently I must. Lol

Yeah I wouldn’t classify either as inspiring.  Especially late in the run.  I have to remember we can still fail in spectacular fashion without much effort.  

Link to comment
Share on other sites

  • Replies 1.4k
  • Created
  • Last Reply
30 minutes ago, WxWatcher007 said:

Which is why our average annual snowfall in the cities is atrocious :P 

 

...especially for early-mid December!  Heck, at this point to me, it would be nice to at least get some winter in the air this month.  It's exciting to just finally have a December that has some semblance of fun tracking, been quite a few years.

If we score a couple or so inches between now and Christmas, great (that's about average in the metro area for the month?).  Anything more...all the better of course!  But not expecting that.

Link to comment
Share on other sites

1 hour ago, Bob Chill said:

Ns low was much weaker this run so not as much tug to back flow/heights. I'm not a fan of the different ways the ns and gulf wave interact and what it means at the surface. Seems like the most likely way for the wave to back into our region is to root for a stronger ns low but a stronger low does damage with temps. If I lived further from the cities I would prob be good with that but I'm not feeling it. 

The ultimate solution (but probably least likely) is to have no northern stream low at all and just hope the trough is sharp enough to back flow into our yards. A good backup plan is to forget about the wave and just hope for the big dig with the NS. That's a tall order in early Dec. Seems to be another one of those setups that is stacked against. 

 

Yeah, a cursory glance at the past 4 cycles, it appears the NS low doesn't dig down nearly as much...it sort of is more recessed back into the Lakes area, but still there.

Link to comment
Share on other sites

The narrow ridge/trough longwave pattern is inherently tough to get right with threats. Little shifts cause large swings in sensible wx. The ridge in the west is too far east for large precip events covering large areas. The tradeoff is having sig cold outbreaks because we're more in the crosshairs as cold air drops south. 

We generally do better with snow with broad troughs (stating obvious). Ens (especially the EPS) lately are supportive of the tall ridge and narrow wavelengths. If that's right it's going to drive us a little crazy with jumpy op runs even with blocking. The trend late in the range is more supportive for cold but less supportive for snow and/or precip. I'm still very optimistic that we get our chances this month but it's probably going to take longer than we think. Generally speaking, good events happen right before relaxations of an amplified pattern. 

 

Link to comment
Share on other sites

2 minutes ago, Cobalt said:

I feel like a lot of costal storms trend NW within 5 days of the event. If I can recall the early Jan 2017 event went from a non-event even 50 miles east of DC to 1.5" of snow. Still, the 12z runs aren't the best

That event was amazing considering the winter, but a bit traumatic lol. 2 days out the bullseye was over Greenville, NC and it slowly moved N-NW to Tidewater. The forecast was 8-12" with isolated up to 14" for MBY 12 hours out. Officially ended up with about 6" and Williamsburg got clobbered with 13". Struggled with mixed precip throughout the night despite temps hovering just under 32. Damn warm nose lol. 

Link to comment
Share on other sites

1 minute ago, SteveVa said:

That event was amazing considering the winter, but a bit traumatic lol. 2 days out the bullseye was over Greenville, NC and it slowly moved N-NW to Tidewater. The forecast was 8-12" with isolated up to 14" for MBY 12 hours out. Officially ended up with about 6" and Williamsburg got clobbered with 13". Struggled with mixed precip throughout the night despite temps hovering just under 32. Damn warm nose lol. 

Also, if I recall, a snow event in late Feb 2015 did the same thing 3 days out. Went from nothing to 3" of snow. Some do the opposite though, so we'll see

Link to comment
Share on other sites

4 minutes ago, BTRWx's Thanks Giving said:

I keep saying this, but I really believe the trends that we have seen are nearly ideal to what we want to see at d5...

I’m going to stick with you in this..I want to join Ji in the abyss of hell. But I will show restraint and caution...can’t got out with this pattern

Link to comment
Share on other sites

1 minute ago, Bob Chill said:

Decent overrunning event in fantasy land on the euro. Something like that actually makes a lot of sense. 

Is that over-running, or a Miller B?  Scoots under us then really turns on when it hits the coast.  Would be big for NYC/Philly.

Link to comment
Share on other sites

3 minutes ago, eurojosh said:

Is that over-running, or a Miller B?  Scoots under us then really turns on when it hits the coast.  Would be big for NYC/Philly.

For us is waa overrunning in front of a developing low in the TN valley. Gulf connection. Likely won't be there next run but that is one of the ways we can do well with this pattern. Lots of pieces of energy rotating around. Euro connected one with a gulf moisture feed. That works here far better than a moisture starved clipper or a jumper/redeveloper. 

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

Guest
This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...