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Winter of 2015-16 Prediction Discussion


dmillz25

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There are NO Signs that point to a mild/wet winter but that doesn't mean we can't get snow. I'm sure they'll be potential as long as the cold and storms are timed well.

We may even get one big storm in the mix a la PD I.

At the very least it should be an active season.

FYP

The guidance is not warm. Most show N Temps with AN precipitation .

We live at 40 N on the coast , it's never all snow . But the set up does not scream warm and wet .

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FYP

The guidance is not warm. Most show N Temps with AN precipitation .

We live at 40 N on the coast , it's never all snow . But the set up does not scream warm and wet .

I thought guidance skewed AN for the northeast. Anyway I'm fully on board with another backloaded winter where latter January and February deliver.

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I thought guidance skewed AN for the northeast. Anyway I'm fully on board with another backloaded winter where latter January and February deliver.

Your last sentence is exactly where the guidance and I believe we are headed .

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The most uncertain element to me is December.

I'm not completely sold on a benign holi0ay month should the AO/NAO hold serve.

I am up against you Tom and Bistardi . I am the only one punting.

Nov should be AN, I just think that carries through into Dec.

I would love to be wrong , but strong ENSO events like to reward us

A bit later.

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I am up against you Tom and Bistardi . I am the only one punting.

Nov should be AN, I just think that carries through into Dec.

I would love to be wrong , but strong ENSO events like to reward us

A bit later.

Whoa, whoa....I was just posing the question....I'm not ready to call for that.

 

December hinges upon the AO/NAO during stronger + ENSO events.

Granted, most have featured +AO/NAO.

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if the ao/nao is negative in December there's a good possibility the month could be on the cold side...I showed how the first nine coldest el nino Decembers since 1950 all had a negative monthly ao/nao...NYC needs a negative ao and nao for a cold December as this table shows...only Dec 1957 had a 6" or greater snowfall with a positive ao/nao...

December temperature, snowfall, NDJ ONI, Dec. AO NAO

1958..........29.4...............3.8"..........0.6..........-1.687....-0.70

1976..........29.9...............5.1"..........0.7..........-2.074....-1.60

1963..........31.2.............11.3"..........1.0..........-1.178....-1.92

1969..........33.4...............6.8"..........0.6..........-1.856....-0.28

1968..........34.3...............7.0"..........0.9..........-0.783....-1.40

1977..........35.7...............0.4"..........0.7..........-0.240....-1.00

2009..........35.9.............12.4"..........1.3..........-3.413....-1.93

2002..........36.0.............11.0"..........1.1..........-1.592....-0.94

 

1997..........38.3................T.............2.3..........-0.071....-0.96

1951..........38.4...............3.3"..........0.6...........1.987.....1.32

2004..........38.4...............3.0"..........0.7...........1.230.....1.21

1972..........38.5................T.............1.9...........1.238.....0.19

1986..........39.0...............0.6"..........1.1...........0.060.....0.99

1987..........39.5...............2.6"..........1.1..........-0.534.....0.32

1991..........39.6...............0.7"..........1.4...........1.613.....0.46

1957..........40.2...............8.7"..........1.6...........0.828.....0.12

1965..........40.5................T.............1.5...........0.163.....1.37

2014..........40.5...............1.0"..........0.6...........0.413.....1.86

1979..........41.1...............3.5"..........0.6...........1.295.....1.00
1953..........41.3................T.............0.7...........0.575....-0.47

1994..........42.2................T.............1.0...........0.894.....2.02

1982..........42.8...............3.0"..........2.1...........0.967.....1.78

2006..........43.6................T.............1.0...........2.282.....1.34

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Whoa, whoa....I was just posing the question....I'm not ready to call for that.

December hinges upon the AO/NAO during stronger + ENSO events.

Granted, most have featured +AO/NAO.

OK that's fair. I punted a while ago and I am very well aware that blocking could do me in .

Bring it , I would love to be wrong here.

But it's possible I could be wrong. I am just a fan of Jan and Feb more.

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I am up against you Tom and Bistardi . I am the only one punting.

Nov should be AN, I just think that carries through into Dec.

I would love to be wrong , but strong ENSO events like to reward us

A bit later.

 

 

Whoa, whoa....I was just posing the question....I'm not ready to call for that.

 

December hinges upon the AO/NAO during stronger + ENSO events.

Granted, most have featured +AO/NAO.

 

 

Yeah, just to clarify my position as well Paul - I have no hard thoughts on the winter's evolution just yet. I was simply playing devil's advocate by noting that an atypical cool December is possible, dependent upon the early season behavior of the northern annular mode, the NAO, etc., in concert with a fairly weak sample size. I like to wait until at least early November before putting the full forecast together.

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Yeah, just to clarify my position as well Paul - I have no hard thoughts on the winter's evolution just yet. I was simply playing devil's advocate by noting that an atypical cool December is possible, dependent upon the early season behavior of the northern annular mode, the NAO, etc., in concert with a fairly weak sample size. I like to wait until at least early November before putting the full forecast together.

Ditto.

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if the ao/nao is negative in December there's a good possibility the month could be on the cold side...I showed how the first nine coldest el nino Decembers since 1950 all had a negative monthly ao/nao...NYC needs a negative ao and nao for a cold December as this table shows...only Dec 1957 had a 6" or greater snowfall with a positive ao/nao...

December temperature, snowfall, NDJ ONI, Dec. AO NAO

1958..........29.4...............3.8"..........0.6..........-1.687....-0.70

1976..........29.9...............5.1"..........0.7..........-2.074....-1.60

1963..........31.2.............11.3"..........1.0..........-1.178....-1.92

1969..........33.4...............6.8"..........0.6..........-1.856....-0.28

1968..........34.3...............7.0"..........0.9..........-0.783....-1.40

1977..........35.7...............0.4"..........0.7..........-0.240....-1.00

2009..........35.9.............12.4"..........1.3..........-3.413....-1.93

2002..........36.0.............11.0"..........1.1..........-1.592....-0.94

 

1997..........38.3................T.............2.3..........-0.071....-0.96

1951..........38.4...............3.3"..........0.6...........1.987.....1.32

2004..........38.4...............3.0"..........0.7...........1.230.....1.21

1972..........38.5................T.............1.9...........1.238.....0.19

1986..........39.0...............0.6"..........1.1...........0.060.....0.99

1987..........39.5...............2.6"..........1.1..........-0.534.....0.32

1991..........39.6...............0.7"..........1.4...........1.613.....0.46

1957..........40.2...............8.7"..........1.6...........0.828.....0.12

1965..........40.5................T.............1.5...........0.163.....1.37

2014..........40.5...............1.0"..........0.6...........0.413.....1.86

1979..........41.1...............3.5"..........0.6...........1.295.....1.00

1953..........41.3................T.............0.7...........0.575....-0.47

1994..........42.2................T.............1.0...........0.894.....2.02

1982..........42.8...............3.0"..........2.1...........0.967.....1.78

2006..........43.6................T.............1.0...........2.282.....1.34

all 16 coldest Decembers in NYC since 1950 with various enso's had a negative ao...20 of the first 21 coldest Decembers had a negative ao for December...1983 was the exception being a little positive for the month...five had a positive nao out of the first 21...1960 was barely positive...

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I don't think it's a bad forecast I like N with AN precipitation for the area .

I think if they just said A or B it would look better. But they imply it.

And equal chances looks like the Euro's N so it's in line.

The Euro seasonal tends to do the same thing fyi. It's area of N at 2 M sometimes break BN.

But it's rare that you see BN on it. It's sometimes used more because it's better at 500mb and from there you can usually figure out the temp anomalies.

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snowfalls 8" or more for December in NYC...if we get one the odds favor more snow after December...
year......8"+ snowfall...season snowfall/after December...later heavy snowfalls...
1872........18.0".....................60.3"................39.8"......................6.0"
1886..........8.1".....................32.9"................22.6"......................none 6" or more
1909..........8.0".....................27.2"................17.4"......................10.0"
1912........11.4".....................15.3"..................3.9"......................none
1916........12.7".....................50.7"................36.2"......................6.7" 6.5"
1917..........9.1".....................34.5"................20.1"......................5.9"
1933........11.2".....................52.0"................36.6"......................9.8" 9.3" 7.6"
1945..........8.3".....................31.4"................12.1"......................7.5"
1947........26.4".....................63.2"................33.6"......................5.7"
1948........16.0".....................46.6"................21.3"......................9.4"
1957..........8.0".....................44.7"................36.0"......................7.9" 11.8"
1959........13.7".....................39.2"................22.9"......................14.7"
1960........15.2".....................54.7"................36.1"......................9.9" 17.4"
2000........12.0".....................35.0"................21.6"......................6.0"
2003........14.0".....................42.0"................22.2"......................10.3"
2009........10.9".....................51.4"................39.0"......................10.0" 20.9"
2010........20.0".....................61.9"................41.8"......................19.0" 9.1"

14 of 16 were above seasonal average...1909-10 was almost average but had a 10" storm in January...1912-13 was the only year that was benign after December...
13 of 17 years had a 6" storm after December...
9 of 17 years had a storm 9" or more after December...
14 of 17 years had 20 or more inches of snow after December...
7 of 17 years had over 50" of seasonal snowfall...
10 of 17 years had over 40"..."
1926 had a 7.9" storm and that year ended up with 22.3"...
1995 had a 7.7" storm and that year ended up with 75.6"...

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Reading through the NE sub-forum I was reminded of this :

 

 

 http://wxmidwest.blogspot.com/2014/10/a-winter-north-atlantic-oscillation.html

 

 

 

So for sh**s and giggles, I decided to check it out for this year thus far to see what it looks like. Brief summary, for the month of October, over 1013mb would favor winter +NAO, less than 1013mb would favor winter -NAO (according to link). Just to be clear, I'm not predicting anything, I only wanted to see what it looks like thus far and I'm deciding to post it. Also, this method is only for El Nino years.

 

 

Here is the box in question from the link(65N-30N/160E-140W), this is climo. From this I'm figuring 1013mb is appx climo.

 

post-4973-0-54268800-1445806743_thumb.gi

 

 

This is where we are as of 10/23 (anomaly)

 

post-4973-0-50964000-1445807229_thumb.gi

 

 

Now check out that area on the Euro-ens for the next couple of days

 

post-4973-0-82495100-1445807931_thumb.pn

 

 

Now, after looking at all of that. I'm inclined to think that the month would finish below climo, or below 1013mb in that zone (we'll see). Which would suggest a winter average -NAO. Of course, we won't know the final number until the month is over. Now, I don't know how effective this method is nor am I calling for anything. I'm merely speculating here to satisfy my own curiosity, and I felt like sharing  :)

 

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