Jump to content
  • Member Statistics

    17,604
    Total Members
    7,904
    Most Online
    ArlyDude
    Newest Member
    ArlyDude
    Joined

Next possible system Jan 29th.


Mitchel Volk

Recommended Posts

The ECMWF, ECM and hint from the GFS show a potential for more snow. The ECM model projects over 6" for the city. There is a cold push ahead of a short wave from the south. Another short coming down from Canada show some potential phasing. My main concern will be the boundary level temps. I would like to see a few more runs of the model cycles before I jump on it. My interest is peaked because the models under estimated last Sunday small event which is similar to this.one. But, this one is stronger.

Link to comment
Share on other sites

  • Replies 99
  • Created
  • Last Reply

EPS ,  almost every  member on the WEST side of the mean is SUB 980 .  All the weaker members are really wide right .  If those wide right members are errors then look for the mean to tighten up further west . 

 

 

NWS Taunton:

 

00Z EPS HAS MANY STRONG MEMBERS WITH PRESSURES SUB 980MB
AND SUB 970MB ALONG WITH A TRACK CLUSTERING NEAR THE BENCHMARK!
DEFINITELY WORTH WATCHING GIVEN THE INTENSITY AND TRACK OF MANY EPS
MEMBERS. 

 

 

UPTON:

 

THERE IS THEN A CHANCE OF PCPN ASSOCIATED WITH LOW PRESSURE PASSING
SE OF THE AREA THURSDAY NIGHT INTO FRIDAY. HOW CLOSE TO US IT
EVENTUALLY APPROACHES APPEARS TO BE IN PART DEPENDENT ON THE PHASING
TIMING OF NORTHERN AND SOUTHERN STREAM ENERGY. ECMWF AND ITS ENSEMBLE
MEAN FOR THE PAST COUPLE OF RUNS TRACKS THE CENTER OF THE OFFSHORE
LOW CLOSER TO US...BRINGING PCPN TO MOST OF THE CWA. MEANWHILE...GFS
HAS BEEN FARTHER OFFSHORE WITH THIS LOW AND KEEPS US DRY. GEFS MEAN
HAS HOWEVER BEEN FARTHER NW WITH THE LOW AND CLOSER TO ECMWF.
CONSIDERING THE GEFS MEAN TYPICAL SE BIAS IN SITUATIONS LIKE
THIS...THERE`S A DECENT CHANCE THAT THE GFS WILL EVENTUALLY NUDGE
FARTHER NW WITH THE TRACK OF THIS STORM. WILL CAP POPS AT CHC FOR
NOW. KEPT PCPN TYPES BASIC AT THIS POINT WITH THIS BEING A PRIMARILY
SNOW EVENT..
.BUT WITH MIXING POSSIBILITIES AT SOME COASTAL SPOTS.

Link to comment
Share on other sites

http://bit.ly/1ZN5ESe

Great explanation from Bernie Rayno, on why we need the trough to go negative, and the Low energy out ahead of the trough.. He thinks it's coming west... But a good video for anyone who doesn't understand negative and positive trough set-ups and how they play a role for ECS

Thanks. That was actually educational. I never really understood the mechanics of making a trough negatively tilted by the interaction with a piece of energy.

Link to comment
Share on other sites

Agreed!

 

 

I honestly do not think that is true... due to the fact that all systems have trended much farther NW this year and that should be case here as well.  Now that does not mean it would be a blockbuster storm but something more on the lines of significant.  Since this threat is in 3-4 day range it makes it even more interesting.  It definitely needs to be watched to see if TODAY the models start to realize that this wouldn't be going OTS.

 

There is already some signals from the EPS and GFS ensembles that this will come further NORTHWEST.... I really like that fact the majority of the EPS is leaning NW... again fun times ahead!

Link to comment
Share on other sites

Keep a watch on the ridge south of Newfoundland in later runs with the record warm SST's out there.

A stronger ridge will force the phase further west than the 0z Op Euro was showing.

 

attachicon.gifmidatl_oisst_anom_current.png

 

attachicon.gifeps_z500a_exnamer_19.png

 

 

Wouldn't that ridge force the system to have to come up the coast and NOT OTS?

Link to comment
Share on other sites

Keep a watch on the ridge south of Newfoundland in later runs with the record warm SST's out there.

A stronger ridge will force the phase further west than the 0z Op Euro was showing.

 

attachicon.gifmidatl_oisst_anom_current.png

 

attachicon.gifeps_z500a_exnamer_19.png

 

 

Good post Chris , these have all come further W  this year even when the PAC was a mess.

 

The ridge stays in place through 96 , so this argues for this to come N . 

 

This may be a case where we need to see this sampled better and get inside 48 hours before we see the guidance come W .

 

1  good sign on the EPS was all the strong sub 980 indi were W of  the mean . lets see if that trend continues today . 

 

ecmwf_z500a_us_5.png

Link to comment
Share on other sites

Good post Chris , these have all come further W this year even when the PAC was a mess.

The ridge stays in place through 96 , so this argues for this to come N .

This may be a case where we need to see this sampled better and get inside 48 hours before we see the guidance come W .

1 good sign on the EPS was all the strong sub 980 indi were W of the mean . lets see if that trend continues today .

ecmwf_z500a_us_5.png

I was pretty shocked to see how many members have this storm in a perfect location for both NYC and the interior to cash in, obviously a few member favor the coast and a few members bring it too west favoring the interior, but good signs

Link to comment
Share on other sites

That's the point he's making I believe

Sent from my iPhone using Tapatalk

100% a matter of timing and not ingredients IMO, if the energy can get out ahead of the trough, the trough will go negative, nearly ensuring a ride up the coast.. If the energy is in sync, or behind the trough, the trough stays positive or neutral and the storm cannot make a norther push... 6 hour swing either way would make a huge difference...
Link to comment
Share on other sites

Here's a depiction of the nam on exactly what I think, WONT happen.. The southern stream, and trough, are in sync.. They stay parallel, pushes the southern stream east off the coast and never goes negative..with a roaring PAC, warm waters, and the fact that models have been increasingly slow and behind on southern stream energy... My call right now would be the southern stream is out ahead of the trough, turns the trough neutral, then negative prior to the southern stream making it to the coast, and allows this to ride up the coast.

No way these 2 energys stay even and ride to the coast holding hands ;)

Link to comment
Share on other sites

100% a matter of timing and not ingredients IMO, if the energy can get out ahead of the trough, the trough will go negative, nearly ensuring a ride up the coast.. If the energy is in sync, or behind the trough, the trough stays positive or neutral and the storm cannot make a norther push... 6 hour swing either way would make a huge difference...

I have been following your posts throughout the blizzard, and I thank you for your very interesting and knowledgable posts. I have learned so much from them. 

 

At what point can we determine that the energy WILL in fact get ahead of the trough? The players are all on the field already (land), so would the next 24 hours be key? Also, which model guidance would you suggest is the best at forecasting this aspect to the forecast? Seems the EURO is picking it up more than the GFS right now?

 

Thanks so much.  

Link to comment
Share on other sites

I have been following your posts throughout the blizzard, and I thank you for your very interesting and knowledgable posts. I have learned so much from them.

At what point can we determine that the energy WILL in fact get ahead of the trough? The players are all on the field already (land), so would the next 24 hours be key? Also, which model guidance would you suggest is the best at forecasting this aspect to the forecast? Seems the EURO is picking it up more than the GFS right now?

Thanks so much.

Regardless of what happened this weekend, I still say the euro...euro is usually deadly with southern stream energy, GFS always has a SE biased IMO.. As for timing, If this is gonna happen, and yes.. It's still a big IF, now that the players have taken the field so to speak, I would think by this afternoons euro, or the 00z suites tonight

Link to comment
Share on other sites

Regardless of what happened this weekend, I still say the euro...euro is usually deadly with southern stream energy, GFS always has a SE biased IMO.. As for timing, If this is gonna happen, and yes.. It's still a big IF, now that the players have taken the field so to speak, I would think by this afternoons euro, or the 00z suites tonight

 

And with a large NW lean on the EURO ensembles... the 12z EURO should be further NW

Link to comment
Share on other sites

Archived

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

  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...