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November 2016 Pattern Discussion


dmillz25

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20 minutes ago, bluewave said:

I would be willing to bet we see another December through March +10 or greater monthly departure within the next 5 years.

But I have no idea which one of those months will be the one when +10 departure occurs.

 

21 minutes ago, bluewave said:

I would be willing to bet we see another December through March +10 or greater monthly departure within the next 5 years.

But I have no idea which one of those months will be the one when +10 departure occurs.

sorry to say I agree with you...the mid to late 1940's had some well above normal months...March 45 and 46...October 47 and 49...March 45 was the warmest winter month if you include March...Last December is on its own level...

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10 hours ago, snowman19 said:

Yea that's a big part of it. Go to the NOAA site and look at the soil moisture stats for our region. Bone dry is an understatement 

NYC reservoirs are really starting to take a hit due to the long-term dry pattern, with many sitting at 30-40% of capacity. We've seen about half of average precipitation in September and October, and nothing this November.

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3 hours ago, bluewave said:

A number of locations around the region are down a very impressive more than -10 inches of precipitation for the YTD.

 

POU...-15.07

BDL...-13.08

BDR...-5.55

LGA...-7.99

NYC..-9.55

JFK...-7.85

ISP...-11.49

EWR...-11.00

TTN...-11.18

And boy is it obvious up here.  It's so dry in the woods it's scary.  The fire danger has got to be through the roof right now.  It's burning down south and if we don't start getting some rain or snow soon we're going to be dealing with it up here too.

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28 minutes ago, gravitylover said:

And boy is it obvious up here.  It's so dry in the woods it's scary.  The fire danger has got to be through the roof right now.  It's burning down south and if we don't start getting some rain or snow soon we're going to be dealing with it up here too.

POU is on track for a top 5 driest year on record unless they really get some heavy precip in December.

2016 so far...25.82

Top 5 driest years POU:

1964....24.52

2001....27.52

1965....27.71

2015....29.82

1966...31.01

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1 hour ago, PB GFI said:

The 12z GFS ensembles days 8 ( 20th ) - 16 are showing a turn away from the torch pattern. 

I think once this gets inside the 6 - 10 you will see more bite .

 

 

People are reluctant to believe the long range GFS because it has done this in the past only to backoff once it gets inside of 10 days. Also -AO doesn't automatically mean cold. The new JMA which was posted in the La Niña thread is an example of why it's not. Hostile Pacific pattern

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14 minutes ago, snowman19 said:

People are reluctant to believe the long range GFS because it has done this in the past only to backoff once it gets inside of 10 days. Also -AO doesn't automatically mean cold. The new JMA which was posted in the La Niña thread is an example of why it's not. Hostile Pacific pattern

Gefs also showing a -epo as well albeit temporary 

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1 hour ago, bluewave said:

Day 10 EPS isn't buying the PAC Jet slowdown that the GEFS has. Pretty much continues with the seasonal trend.

 

eps_z500a_nh_41.png

 

gefs_z500a_nh_41.png

 

 

Look at the agreement in the Arctic and Atlantic. 

It's Just a matter of time 

 

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17 minutes ago, PB GFI said:

Look at the agreement in the Arctic and Atlantic. 

It's Just a matter of time 

 

We want to see the PAC Jet weaken enough to allow more ridging near Alaska. December 2010 and 2012 both had great -AO patterns.

The deciding factor between the two was that 2010 had a stronger -AO/-NAO and more blocking near Alaska. So it will be interesting to see

what the guidance starts to look like after November 20th.

 

12.png

 

10.png

 

 

 

 

 

 

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On 11/12/2016 at 4:52 PM, bluewave said:

I would be willing to bet we see another December through March +10 or greater monthly departure within the next 5 years.

But I have no idea which one of those months will be the one when +10 departure occurs.

It could start becoming more common and may even happen in the summer which would be very interesting!

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52 minutes ago, bluewave said:

We want to see the PAC Jet weaken enough to allow more ridging near Alaska. December 2010 and 2012 both had great -AO patterns.

The deciding factor between the two was that 2010 had a stronger -AO/-NAO and more blocking near Alaska. So it will be interesting to see

what the guidance starts to look like after November 20th.

 

12.png

 

10.png

This!  We have seen that a hostile PAC can absolutely moot a favorable Atlantic.  I did not live in the Tri-State for the 2012-13 winter though.  Backloaded?  Looks like total NYC snowfall was near normal, but how was that distributed?

And PB, do you mean to say that, in time, a favorable ATL side delivers the goods for us regardless?

 

 

 

 

 

 

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4 hours ago, Eduardo said:

 

No, bad PAC s are hard to overcome but , 

If you can get the PAC to settle down a bit , the Atlantic side looks OK,  for now it would allow systems to get forced underneath. 

 

I was just mentioning both ensembles look similar in the Arctic and over Greenland 

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Be careful using 83-84 as an analog guys. Remember that we had the El Chichon volcano eruption back then still wreaking havoc with the world's weather from all the aerosols it pumped into the upper atmosphere. It was one of the biggest weather altering volcanic eruptions of all time which gives real pause to its usefulness as an analog. It messed up the weather for years

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A few things of note here  , It's only November 12 and already I am reading , winter is over  be careful this is not last year . 

There is a lot of emphasis on those seasonal models.

Caution, 

The Euro November winter forecast in 2013 and again in 2014 were warm and it  did not end up that way. 

Late last year the Jamstec was BN in the east , that too failed .

I should know , I posted on those maps ad nauseum over the years. 

I dont believe this is the ever ending blow torch that some here do .

The winters over posts are way to premature .

 

 

 

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7 hours ago, PB GFI said:

 

A few things of note here  , It's only November 12 and already I am reading , winter is over  be careful this is not last year . 

There is a lot of emphasis on those seasonal models.

Caution, 

The Euro November winter forecast in 2013 and again in 2014 were warm and it  did not end up that way. 

Late last year the Jamstec was BN in the east , that too failed .

I should know , I posted on those maps ad nauseum over the years. 

I dont believe this is the ever ending blow torch that some here do .

The winters over posts are way to premature .

 

 

 

 

Yeah, people have to realize how erratic these seasonal models are including the Euro. We have seen how the EPS beyond day 10 is often just as bad

as the other guidance.

 

The key to the pattern evolution Nov 20-Dec 10 is getting the Pac Jet to slow enough for more ridging near Alaska. I don't think the models

will have a handle on this until we start getting past November 20th.

 

Models want to split or shift the polar vortex in Asia over the next 10 days. So I won't have much confidence in future forecast until

we see what that does to the pattern going forward.

 

 

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