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December Pattern Disco- 2013


Damage In Tolland

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Yeah that's just weird - most coops didn't measure like that anyway. Not sure what they want regular observers to do. 

 

I guess what confuses me is that we ask the paid observers at airports like CON, PWM, etc to measure every 6 hours if possible, yet COOPs are now only supposed to do it once per 24 hours. If an observer can measure every 6 hours (or 12) why restrict it if it's okay for a larger airport?

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I guess what confuses me is that we ask the paid observers at airports like CON, PWM, etc to measure every 6 hours if possible, yet COOPs are now only supposed to do it once per 24 hours. If an observer can measure every 6 hours (or 12) why restrict it if it's okay for a larger airport?

 

Yeah - really bizarre. Why keep things inconsistent? 

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I would hedge slightly colder until we actually see cross polar flow cut off. The ridge retrogrades but not far enough to shut off the cross polar flow. So that means our cold intrusions will be potent and likely outweigh the milder periods. Basically the opposite of what happens when we have a general vortex stuck there when the cold shots are wimpy compared to the torch periods.

Yeah things although precarious still look like we can be on the right side of the wintry line.Feeling good this morning.. Snow Fri nite/ snow Sunday night and another later next week

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BOX unimpressed...

 

MON-TUE...

GUIDANCE CONTINUES TO SUGGEST THAT A STRONGER AREA OF LOW PRES

WILL PASS OVER OR NW OF SRN NEW ENGLAND THROUGH THE PERIOD. EITHER

OF THESE TRACKS SUGGESTS A MAINLY WET RATHER THAN WHITE SCENARIO.

SHOULD THIS ULTIMATELY VERIFY...IT WOULD ALSO BE ASSOCIATED WITH

SOME STRONG WINDS AS WELL...FOLLOWED BY ANOTHER ANOMALOUS COLD

SNAP BY TUE. STILL SOME TIMING AND TRACK DIFFERENCES WHICH WILL

NEED TO BE OVERCOME...AND GUIDANCE CONTINUES TO SLOW THIS FEATURE

SOMEWHAT...LIKELY DUE TO THE BLOCKING HIGH TO THE N. GIVEN THE

FEATURES AT PLAY...WILL NEED TO MONITOR...BUT CONFIDENCE IS LOW AT

THIS TIME.

is there at least a little mutual exclusivity here?

 

HPC maps show a midwest low cutting up, with redevelopment on the delmarva coast.  Snow to ice up here at worst I'd think.

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is there at least a little mutual exclusivity here?

 

HPC maps show a midwest low cutting up, with redevelopment on the delmarva coast.  Snow to ice up here at worst I'd think.

 

Discordantly, the 'more wet than white' sentiment of the AFD is countered with ZFP (and p/c's) of just snow.

 

We'll see.  Fun to watch and hope.

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From the boards favorite met

 

 

  1. Not suggesting a SSW by any stretch, but we've seen two vortex splits already. If it happens again, could be much cooler than progged EOM

  2. Wild card will be the polar vortex. It's "supposed" to be cold and stable, but has not behaved that way so far

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Is anybody else concerned about the southeast ridge that keeps popping up?  My concerns are that the day 6 and beyond are cold, but if you recall, this week we are currently in was suppose to be cold as well...and low and behold the SE ridge develops with +20 anomolies.

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Is anybody else concerned about the southeast ridge that keeps popping up?  My concerns are that the day 6 and beyond are cold, but if you recall, this week we are currently in was suppose to be cold as well...and low and behold the SE ridge develops with +20 anomolies.

What the blue fuk? +20?

And this forums mets have touted this week as the pattern relaxation time since mid November.

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That Monday system is starting to look icier for the interior...hopefully we don't slow it down and amp it up too much, then we'll end up with a torching cutter after the initial frozen.

 

The EC ensembles tried to get a bit of an east based -NAO going late in their run which would help us out as the EPO ridge retros a little bit...that would try and force heights a little lower in SE Canada.

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That Monday system is starting to look icier for the interior...hopefully we don't slow it down and amp it up too much, then we'll end up with a torching cutter after the initial frozen.

The EC ensembles tried to get a bit of an east based -NAO going late in their run which would help us out as the EPO ridge retros a little bit...that would try and force heights a little lower in SE Canada.

Are the euro ens colder than the op for the Sunday night storm?
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Is anybody else concerned about the southeast ridge that keeps popping up?  My concerns are that the day 6 and beyond are cold, but if you recall, this week we are currently in was suppose to be cold as well...and low and behold the SE ridge develops with +20 anomolies.

We'll be dealing with a SE Ridge all winter unless we can get some high latitude blocking or some timely confluence to beat it down somewhat.  I'm would not be overly concerned with it right now as it is still early Dec.  What I do like seeing is an active pattern that looks to be a break from what we've been in.  Having storms come our way is the first step.  The cold is there to be had in Canada it's just getting the mechanism to transport it S & E to deliver the goods.

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That Monday system is starting to look icier for the interior...hopefully we don't slow it down and amp it up too much, then we'll end up with a torching cutter after the initial frozen.

The EC ensembles tried to get a bit of an east based -NAO going late in their run which would help us out as the EPO ridge retros a little bit...that would try and force heights a little lower in SE Canada.

Not much in the way if frozen on the coastal plain

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Not much in the way if frozen on the coastal plain

 

 

Everyone starts as frozen on the Euro except maybe the cape and S RI coast. Though it turns over pretty quick in your area. If the system is a bit slower, then we'll have less frozen, so we'll want it to be a faster mover.

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Everyone starts as frozen on the Euro except maybe the cape and S RI coast. Though it turns over pretty quick in your area. If the system is a bit slower, then we'll have less frozen, so we'll want it to be a faster mover.

Verbatim how much ice we looking at?  I understand that it is too far away to even discuss these details, but figured I would ask lol...

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The op Euro shows what we've been worried about by D10. Retro low into GOA and the furnace hammer for the lower 48. 

 

At least it shows a nice snow/sleet/rain storm on Monday - that would be the first measurable for most of us. 

 

 

I think that warmth is coming.  But we've had what looked like longer term warmth set in this season only to get blasted in later runs up here anyway.  Let's hope there's a line drawn in the sand shortly.

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Everyone starts as frozen on the Euro except maybe the cape and S RI coast. Though it turns over pretty quick in your area. If the system is a bit slower, then we'll have less frozen, so we'll want it to be a faster mover.

these kinds of storms tend in come in faster if I recall.  and HPC talks about a system "racing northeast".  Seems like a front end dumper that is probably good up here and mixed results the further south and east you go.  A step down and early december behaving like early december.

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I guess what confuses me is that we ask the paid observers at airports like CON, PWM, etc to measure every 6 hours if possible, yet COOPs are now only supposed to do it once per 24 hours. If an observer can measure every 6 hours (or 12) why restrict it if it's okay for a larger airport?

It would be interesting to know whether quality control data led to this new policy. Perhaps there was a statistically meaningful divergence in snowfall totals and the underlying assumption is that the issue can best be addressed by the new policy? Perhaps one could have pilot tested the new approach to see if it addresses quality issues.

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The op Euro shows what we've been worried about by D10. Retro low into GOA and the furnace hammer for the lower 48.

At least it shows a nice snow/sleet/rain storm on Monday - that would be the first measurable for most of us.

sounds like your November 1st post to a tee. Besides that it doesn't show a furnace, seems the NAO AO has a say in that.
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