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Preliminary Discussion For 2018-19 Autumn & Winter Seasons

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#1
LNK_Weather

Posted 10 July 2018 - 10:34 AM

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I'm seeing a lot of general Fall/Winter discussion happening in the ENSO thread, so I figured we are about due for this seeing as we are only 1.5 months away from met Fall, and I know Fall-like weather can sometimes begin as early as August. And according to Euro weeklies, we could start seeing some of that. Discuss.


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2018 Severe Weather Season Statistics for my apartment:

 

Tornado Watches: 2 (Last: 6/11/2018)

Tornado Warnings: 0 (Last: 5/9/2016)

Severe Thunderstorm Watches: 4 (Last: 6/30/2018)

Severe Thunderstorm Warnings: 3 (Last: 6/30/2018)

SPC Day 1 High Risks: 0 (Last: 6/5/2008)

SPC Day 1 Moderate Risks: 1 (Last: 6/1/2018)

SPC Day 1 Enhanced Risks: 3 (Last: 6/30/2018)

SPC Day 1 Slight Risks: 6 (Last: 7/18/2018)

_____________________________________________________________________________________________________________________________________________________

>1" Snowfalls for Lincoln Municipal Airport in 2017-2018: 12/23-12/24 (3.6), 1/22 (1.8), 2/5 (1.6), 2/6 (2.0), 2/9-2/10 (2.8), 2/21-2/22 (1.9), 4/14-4/15 (2.0)

 

Total Snowfall for 2017-2018 @ KLNK: 21.4"               Coldest Low: -19*F (1/1/2018)

 

First flake of the season: 10/31/2017 @ 1:17 PM        Last flake of the season: 4/15/2018 @ 9:22 AM


#2
Tom

Posted 11 July 2018 - 03:39 AM

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I'm seeing a lot of general Fall/Winter discussion happening in the ENSO thread, so I figured we are about due for this seeing as we are only 1.5 months away from met Fall, and I know Fall-like weather can sometimes begin as early as August. And according to Euro weeklies, we could start seeing some of that. Discuss.

Thanks Lincoln.  I was planning on using the ENSO thread to include the Autumn/Winter discussions for another week or two, but since you fired one up, let's roll with it.  If you don't mind, can I edit the title to include the winter component?


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#3
LNK_Weather

Posted 11 July 2018 - 05:53 AM

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Thanks Lincoln. I was planning on using the ENSO thread to include the Autumn/Winter discussions for another week or two, but since you fired one up, let's roll with it. If you don't mind, can I edit the title to include the winter component?


No problem, let's do it!
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2018 Severe Weather Season Statistics for my apartment:

 

Tornado Watches: 2 (Last: 6/11/2018)

Tornado Warnings: 0 (Last: 5/9/2016)

Severe Thunderstorm Watches: 4 (Last: 6/30/2018)

Severe Thunderstorm Warnings: 3 (Last: 6/30/2018)

SPC Day 1 High Risks: 0 (Last: 6/5/2008)

SPC Day 1 Moderate Risks: 1 (Last: 6/1/2018)

SPC Day 1 Enhanced Risks: 3 (Last: 6/30/2018)

SPC Day 1 Slight Risks: 6 (Last: 7/18/2018)

_____________________________________________________________________________________________________________________________________________________

>1" Snowfalls for Lincoln Municipal Airport in 2017-2018: 12/23-12/24 (3.6), 1/22 (1.8), 2/5 (1.6), 2/6 (2.0), 2/9-2/10 (2.8), 2/21-2/22 (1.9), 4/14-4/15 (2.0)

 

Total Snowfall for 2017-2018 @ KLNK: 21.4"               Coldest Low: -19*F (1/1/2018)

 

First flake of the season: 10/31/2017 @ 1:17 PM        Last flake of the season: 4/15/2018 @ 9:22 AM


#4
Tom

Posted 11 July 2018 - 09:40 AM

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The latest QBO reading for the month of June continues the decline down to -28.45 compared to last months reading of -24.23.  Good signs for high latitude blocking into the cold season.  I just did a quick check and since 1948, there has been no data indicating a index value this low for the month of June.  The closest years were 2012 (-25.89) and 2010 (-25.05).


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#5
Tom

Posted 11 July 2018 - 11:48 AM

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What is the ECMWF showing for this Autumn and into the 1st half of Winter???  Certainly showcasing an El Nino look with the continuation of a very wet pattern across the SW/4 corners and into Cali throughout the Autumn.

 

ps2png-gorax-green-007-6fe5cac1a363ec152

 

 

 

Pocket of AN temps across the MW/Plains and near avg down in the southern Plains...NE Canada continues to remain in the deep freezer.  This, to me, suggests another season of the Polar Vortex being a dominant player this season.

 

 

ps2png-gorax-green-000-6fe5cac1a363ec152

 

 

By the time we head deeper into the Autumn, the model is seeing the EC ridging (might be to strong) which covers the MW/GL's region.

 

ps2png-gorax-green-002-6fe5cac1a363ec152

 

 

There is a signal of plenty of early season cutters???  Lots of precip continues in the west/southwest and as the jet strengthens, it suggests a wetter signal across the App's/GL's.  SE ridge may be the real deal early on in the season.

 

ps2png-gorax-green-007-6fe5cac1a363ec152

 

The nation turns colder as winter progresses....

 

ps2png-gorax-green-005-6fe5cac1a363ec152

 

 

In terms of precip, nearly carbon copy for the 1st half of winter....looks fun and wild...

 

ps2png-gorax-green-007-6fe5cac1a363ec152



#6
OKwx2k4

Posted 11 July 2018 - 07:24 PM

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What is the ECMWF showing for this Autumn and into the 1st half of Winter??? Certainly showcasing an El Nino look with the continuation of a very wet pattern across the SW/4 corners and into Cali throughout the Autumn.

ps2png-gorax-green-007-6fe5cac1a363ec152



Pocket of AN temps across the MW/Plains and near avg down in the southern Plains...NE Canada continues to remain in the deep freezer. This, to me, suggests another season of the Polar Vortex being a dominant player this season.


ps2png-gorax-green-000-6fe5cac1a363ec152


By the time we head deeper into the Autumn, the model is seeing the EC ridging (might be to strong) which covers the MW/GL's region.

ps2png-gorax-green-002-6fe5cac1a363ec152


There is a signal of plenty of early season cutters??? Lots of precip continues in the west/southwest and as the jet strengthens, it suggests a wetter signal across the App's/GL's. SE ridge may be the real deal early on in the season.

ps2png-gorax-green-007-6fe5cac1a363ec152

The nation turns colder as winter progresses....

ps2png-gorax-green-005-6fe5cac1a363ec152


In terms of precip, nearly carbon copy for the 1st half of winter....looks fun and wild...

ps2png-gorax-green-007-6fe5cac1a363ec152


Looks like a beautiful last 1/3 of the year being drawn up by the Euro. Especially if normal on there equals cold, which it usually does.

#7
Tom

Posted 12 July 2018 - 03:54 AM

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Looks like a beautiful last 1/3 of the year being drawn up by the Euro. Especially if normal on there equals cold, which it usually does.

Yup, I can see it trend colder as we get closer, esp since the STJ will be quite active this season and surely to be a much different LRC pattern.  It's going to be fun watch the new pattern unfold.



#8
Tom

Posted 12 July 2018 - 04:22 AM

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@ LNK, when I saw the temp departure map you posted for the N.H. it struck me how the majority of the cold air was knifing down out of the Arctic into North America.  As it stands now, the CFSv2 is predicting a major trough like feature in Canada, suggesting to me that the Polar Vortex will be an even stronger feature than we saw last year.  In fact, it may even rival '13-'14 from this distance.  Over the last several cold seasons, Siberia and East Asia saw the brunt of the cold that hit hard, and early which lasted the entire winter in that part of the world.  Is nature going to balance that out this year???  I think so and I'm tempted to say that this will be an extreme winter season across Canada/U.S.  I believe the signals will be showing up in Sept across Canada as we see lobes of the Polar Vortex spinning near Hudson Bay sending numerous cold fronts down into the U.S.  Something peculiar is evolving and I'm beginning to put a finger on it.

 

 

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#9
NEJeremy

Posted 12 July 2018 - 08:46 AM

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I'm going to go out on a limb and say, who knows what's going to happen? :P

Last winter was supposed to be epic everywhere based on the models, indices, and analogs, and we ended up with 18" of snow total and most areas were below or near normal for snowfall for the season. Spring took a while to get here and there was some extreme cold in January, but overall it was a pretty benign winter.

This summer was supposed to begin hot and dry with talks of a severe drought kicking in especially out here in the Plains, and instead a lot of areas have had record rainfall and flooding and still the heat.

All I know is I am done telling my relatives/friends what the upcoming winter is going to be like in the fall. They've stopped believing me :D



#10
Tom

Posted 13 July 2018 - 11:29 AM

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Saw this post by Gary Lezak in his blog:

 

 

 

The last time it reached 100° was on September 8, 2013.

 

Is this a synchronicity for the upcoming winter???  '13-'14 was a brutally cold one...just sayin'...


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#11
james1976

Posted 13 July 2018 - 12:12 PM

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Saw this post by Gary Lezak in his blog:

 

 

Is this a synchronicity for the upcoming winter???  '13-'14 was a brutally cold one...just sayin'...

My fav winter!



#12
Tom

Posted 13 July 2018 - 12:46 PM

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My fav winter!


Mine to, but I’d like to see a combo of ‘78-‘77 and ‘13-‘14...spread the wealth around...

#13
OKwx2k4

Posted 13 July 2018 - 04:11 PM

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Mine to, but I’d like to see a combo of ‘78-‘77 and ‘13-‘14...spread the wealth around...


Throw in the cold of 1983-84 and you have a trifecta that we could all love.

#14
CentralNebWeather

Posted 13 July 2018 - 06:42 PM

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Around here 1983-1984 was absolutely the best as a young kid. As I recall we had 8 or 9 snow days. From a Thanksgiving blizzard to record cold to storm after storm until April. 13-14 was not good in Central Nebraska, just cold and dry.
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#15
LNK_Weather

Posted 13 July 2018 - 06:43 PM

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Around here 1983-1984 was absolutely the best as a young kid. As I recall we had 8 or 9 snow days. From a Thanksgiving blizzard to record cold to storm after storm until April. 13-14 was not good in Central Nebraska, just cold and dry.

This. Besides 2016-17 obviously, 2013-14 is the worst recent year for us. And we haven't gotten above normal snowfall since 2012-13. And we haven't REALLY gotten above normal snowfall since 2010-11.


2018 Severe Weather Season Statistics for my apartment:

 

Tornado Watches: 2 (Last: 6/11/2018)

Tornado Warnings: 0 (Last: 5/9/2016)

Severe Thunderstorm Watches: 4 (Last: 6/30/2018)

Severe Thunderstorm Warnings: 3 (Last: 6/30/2018)

SPC Day 1 High Risks: 0 (Last: 6/5/2008)

SPC Day 1 Moderate Risks: 1 (Last: 6/1/2018)

SPC Day 1 Enhanced Risks: 3 (Last: 6/30/2018)

SPC Day 1 Slight Risks: 6 (Last: 7/18/2018)

_____________________________________________________________________________________________________________________________________________________

>1" Snowfalls for Lincoln Municipal Airport in 2017-2018: 12/23-12/24 (3.6), 1/22 (1.8), 2/5 (1.6), 2/6 (2.0), 2/9-2/10 (2.8), 2/21-2/22 (1.9), 4/14-4/15 (2.0)

 

Total Snowfall for 2017-2018 @ KLNK: 21.4"               Coldest Low: -19*F (1/1/2018)

 

First flake of the season: 10/31/2017 @ 1:17 PM        Last flake of the season: 4/15/2018 @ 9:22 AM


#16
CentralNebWeather

Posted 13 July 2018 - 06:47 PM

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17-18 was actually good here though no big events but above normal snowfall and quite a bit of cold.

#17
LNK_Weather

Posted 13 July 2018 - 07:33 PM

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17-18 was actually good here though no big events but above normal snowfall and quite a bit of cold.

We were below normal here but it's the best year we've had since 2010-11. I don't consider 2012-13 to be above normal because basically half our season's total came from quick melting systems in March, April, and May.


2018 Severe Weather Season Statistics for my apartment:

 

Tornado Watches: 2 (Last: 6/11/2018)

Tornado Warnings: 0 (Last: 5/9/2016)

Severe Thunderstorm Watches: 4 (Last: 6/30/2018)

Severe Thunderstorm Warnings: 3 (Last: 6/30/2018)

SPC Day 1 High Risks: 0 (Last: 6/5/2008)

SPC Day 1 Moderate Risks: 1 (Last: 6/1/2018)

SPC Day 1 Enhanced Risks: 3 (Last: 6/30/2018)

SPC Day 1 Slight Risks: 6 (Last: 7/18/2018)

_____________________________________________________________________________________________________________________________________________________

>1" Snowfalls for Lincoln Municipal Airport in 2017-2018: 12/23-12/24 (3.6), 1/22 (1.8), 2/5 (1.6), 2/6 (2.0), 2/9-2/10 (2.8), 2/21-2/22 (1.9), 4/14-4/15 (2.0)

 

Total Snowfall for 2017-2018 @ KLNK: 21.4"               Coldest Low: -19*F (1/1/2018)

 

First flake of the season: 10/31/2017 @ 1:17 PM        Last flake of the season: 4/15/2018 @ 9:22 AM


#18
OKwx2k4

Posted 13 July 2018 - 08:22 PM

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We were below normal here but it's the best year we've had since 2010-11. I don't consider 2012-13 to be above normal because basically half our season's total came from quick melting systems in March, April, and May.


You're in same boat as me. 12-13 could have been an amazing winter for me. Snowed everywhere but here and, as you said, enough precip, just very very marginal cold every time. Needed too many things to go right every time and it just didn't. Most failed snow chances I have ever seen. Very memorable because of the May snowfall and record lows in 2013.

#19
Tom

Posted 14 July 2018 - 04:03 AM

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As stated in the ENSO thread, fresh hot off the press, the JAMSTEC, is sniffing out a potentially cold winter across the CONUS.  

 

temp2.glob.DJF2019.1jul2018.gif

 

 

Some previous forecasts which the model "saw" comparing our upcoming winter is the 2009-10 season.  Back in July 2009, this is what the model was seeing.

 

temp2.glob.DJF2010.1jul2009.gif

 

 

Very similar SST configuration across the equatorial PAC, but across the N PAC, its colder across NW NAMER...this is prob a bigger difference when comparing the 2 seasons, as well as, the cold waters in the W ATL across the eastern seaboard.  

 

ssta.glob.DJF2010.1jul2009.gif


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#20
james1976

Posted 14 July 2018 - 05:45 AM

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I remember 83-84 a bit. Seems like there was some brutal cold around here and we did have a big April snow.



#21
CentralNebWeather

Posted 14 July 2018 - 06:05 AM

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I remember 83-84 a bit. Seems like there was some brutal cold around here and we did have a big April snow.


We had the longest stretch ever of not rising above 0. I need to research the exact length and date. The Thanksgiving Blizzard had us stranded at our Aunt’s house for 2 days. It was so fun for all of us little kids at the time to sleep on the floor. Thinking back 35 years, there are relatives that are no longer with us that spent a wonderful weekend together.
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#22
LNK_Weather

Posted 14 July 2018 - 06:58 AM

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Month of December 1983 in Lincoln, NE:

 

Date                                Hi             Lo    Precip      Snowfall   Snow depth

 

12/01/1983      27     2  0.00   0.0     6
12/02/1983      22     9  0.00   0.0     6
12/03/1983      25     7  0.00   0.0     6
12/04/1983      31    14     T   0.0     6
12/05/1983      30    20  0.05   0.5     6
12/06/1983      24     5  0.01   0.1     7
12/07/1983      28     4     T     T     7
12/08/1983      36     3     T     T     7
12/09/1983      20    10     T     T     7
12/10/1983      31    13     T   0.0     7
12/11/1983      31    14     T   0.0     6
12/12/1983      25     7     T     T     6
12/13/1983      26    11     T     T     5
12/14/1983      21    13  0.11   2.1     5
12/15/1983      20     8  0.02   0.3     7
12/16/1983      13    -2     T     T     7
12/17/1983       6    -6  0.07   1.3     7
12/18/1983      -2   -18  0.01   0.3     9
12/19/1983      -5   -16     T     T     9
12/20/1983      -2   -14  0.17   6.0     9
12/21/1983      -2   -13  0.01   0.3    15
12/22/1983      -6   -27  0.01   0.3    15
12/23/1983      -6   -13  0.01   0.3    15
12/24/1983     -10   -18  0.00   0.0    15
12/25/1983       4   -16  0.00   0.0    14
12/26/1983      20    -7  0.00   0.0    14
12/27/1983      20    13  0.10   2.3    14
12/28/1983      13    -4  0.00   0.0    16
12/29/1983       6    -4  0.00   0.0    15
12/30/1983      22    -7  0.00   0.0    14


2018 Severe Weather Season Statistics for my apartment:

 

Tornado Watches: 2 (Last: 6/11/2018)

Tornado Warnings: 0 (Last: 5/9/2016)

Severe Thunderstorm Watches: 4 (Last: 6/30/2018)

Severe Thunderstorm Warnings: 3 (Last: 6/30/2018)

SPC Day 1 High Risks: 0 (Last: 6/5/2008)

SPC Day 1 Moderate Risks: 1 (Last: 6/1/2018)

SPC Day 1 Enhanced Risks: 3 (Last: 6/30/2018)

SPC Day 1 Slight Risks: 6 (Last: 7/18/2018)

_____________________________________________________________________________________________________________________________________________________

>1" Snowfalls for Lincoln Municipal Airport in 2017-2018: 12/23-12/24 (3.6), 1/22 (1.8), 2/5 (1.6), 2/6 (2.0), 2/9-2/10 (2.8), 2/21-2/22 (1.9), 4/14-4/15 (2.0)

 

Total Snowfall for 2017-2018 @ KLNK: 21.4"               Coldest Low: -19*F (1/1/2018)

 

First flake of the season: 10/31/2017 @ 1:17 PM        Last flake of the season: 4/15/2018 @ 9:22 AM


#23
Tom

Posted 16 July 2018 - 03:43 AM

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The sun has gone into a deep sleep of late.  18 days and counting of a spotless sun.  The solar min is declining and at a faster rate than the models have been predicting it to be.

 

 

 

Spotless Days
Current Stretch: 18 days 
2018 total: 105 days (54%)
2017 total: 104 days (28%)


#24
Tom

Posted 16 July 2018 - 09:19 AM

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The latest IRI mult-ensemble model has come out today and paints quite a different picture.  While this could be a possible outcome, its hard to believe since Alaska/N Canada/Greenland are so warm.  STJ looks active on this model which confirms a southern stream storm track.

 

 

SON18_NAm_tmp.gif

 

 

 

SON18_NAm_pcp.gif

 

 

 

 

As we go through the 2nd half of Autumn into Winter, the pattern changes...

 

OND18_NAm_tmp.gif

 

 

OND18_NAm_pcp.gif

 

 

1st half of Winter....active/wet and cold....

 

 

NDJ19_NAm_tmp.gif

 

NDJ19_NAm_pcp.gif



#25
Niko

Posted 16 July 2018 - 02:27 PM

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Many outlets are going with a Modoki El Nino for this upcoming Winter.



#26
OKwx2k4

Posted 16 July 2018 - 02:53 PM

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2018 vs 2015 via JB on Twitter.Attached File  Screenshot_20180716-175532_Firefox.jpg   192.43KB   1 downloads

Easy to spot, in contrast, why we spent all of 15-16 under a massive ridge. Not looking like a problem this year.
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#27
Niko

Posted 16 July 2018 - 02:56 PM

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Hey Jaster...this is for you. Get ready this Winter!!!   :lol: ;)



#28
LNK_Weather

Posted 16 July 2018 - 04:52 PM

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Winter outlooks in July? Jesus Christ.

2018 Severe Weather Season Statistics for my apartment:

 

Tornado Watches: 2 (Last: 6/11/2018)

Tornado Warnings: 0 (Last: 5/9/2016)

Severe Thunderstorm Watches: 4 (Last: 6/30/2018)

Severe Thunderstorm Warnings: 3 (Last: 6/30/2018)

SPC Day 1 High Risks: 0 (Last: 6/5/2008)

SPC Day 1 Moderate Risks: 1 (Last: 6/1/2018)

SPC Day 1 Enhanced Risks: 3 (Last: 6/30/2018)

SPC Day 1 Slight Risks: 6 (Last: 7/18/2018)

_____________________________________________________________________________________________________________________________________________________

>1" Snowfalls for Lincoln Municipal Airport in 2017-2018: 12/23-12/24 (3.6), 1/22 (1.8), 2/5 (1.6), 2/6 (2.0), 2/9-2/10 (2.8), 2/21-2/22 (1.9), 4/14-4/15 (2.0)

 

Total Snowfall for 2017-2018 @ KLNK: 21.4"               Coldest Low: -19*F (1/1/2018)

 

First flake of the season: 10/31/2017 @ 1:17 PM        Last flake of the season: 4/15/2018 @ 9:22 AM


#29
james1976

Posted 17 July 2018 - 04:07 AM

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Winter outlooks in July? Jesus Christ.

Yeah winter outlooks start popping up july-august. Seems early but fun nonetheless.

#30
LNK_Weather

Posted 17 July 2018 - 08:29 AM

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Yeah winter outlooks start popping up july-august. Seems early but fun nonetheless.

If I had a dollar for every time a winter outlook said "significant cold snaps, above normal snow" for here...


2018 Severe Weather Season Statistics for my apartment:

 

Tornado Watches: 2 (Last: 6/11/2018)

Tornado Warnings: 0 (Last: 5/9/2016)

Severe Thunderstorm Watches: 4 (Last: 6/30/2018)

Severe Thunderstorm Warnings: 3 (Last: 6/30/2018)

SPC Day 1 High Risks: 0 (Last: 6/5/2008)

SPC Day 1 Moderate Risks: 1 (Last: 6/1/2018)

SPC Day 1 Enhanced Risks: 3 (Last: 6/30/2018)

SPC Day 1 Slight Risks: 6 (Last: 7/18/2018)

_____________________________________________________________________________________________________________________________________________________

>1" Snowfalls for Lincoln Municipal Airport in 2017-2018: 12/23-12/24 (3.6), 1/22 (1.8), 2/5 (1.6), 2/6 (2.0), 2/9-2/10 (2.8), 2/21-2/22 (1.9), 4/14-4/15 (2.0)

 

Total Snowfall for 2017-2018 @ KLNK: 21.4"               Coldest Low: -19*F (1/1/2018)

 

First flake of the season: 10/31/2017 @ 1:17 PM        Last flake of the season: 4/15/2018 @ 9:22 AM


#31
NEJeremy

Posted 17 July 2018 - 08:59 AM

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If I had a dollar for every time a winter outlook said "significant cold snaps, above normal snow" for here...

It's weird how winter weather sites that are run by winter weather enthusiasts always all say that... I already know what the winter weather forecasts are going to say each year :D


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#32
Tom

Posted 17 July 2018 - 01:22 PM

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After performing some data crunching and comparing this year's Arctic temps and QBO index through June, I found a very similar match and that year was 2010.   

 

Check this out, here is the chart below showing the current state of Arctic temps through mid July...

meanT_2018.png

 

2010...notice the drop in arctic temps mid summer towards 0C...same timing, and if you also compare both charts from Day 75 they are behaving similarly.   Both years start with a similar QBO index value in the -10's gradually decreasing, however, in 2010, it bottomed out in the month of May (-26.28) and continued to rise into positive by Aug and continued + through Autumn/Winter.  

 

 

 

meanT_2010.png

 

 

Now, when I looked at the NAO/AO index values that season (2010-2011), from Oct-Jan it had a general -AO and at times a major -AO.  It flipped positive Feb-Apr.  In terms of the NAO, I would say it was generally slightly negative in Oct, neutral through 1st half of Nov, then second half of Nov it tanked and stayed negative from Dec-Jan, reversed positive in Feb-Apr.  I'd say if the QBO continues to show declines and remains negative throughout the Autumn/Winter we stand a very good chance to see significant high lat blocking this cold season.

 

With all this in mind, I find it hard to believe that we will not see blocking.  In fact, there is evidence that it could be rather significant.  I'm going to pay attention in the regions of Scandinavia and Alaska as my two hot spots this Autumn.

 

 


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#33
GDR

Posted Yesterday, 07:08 PM

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I’ve seen analog years of 1911-12 pop up. If that’s the case lookout for a cold winter.

#34
OKwx2k4

Posted Yesterday, 09:04 PM

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After performing some data crunching and comparing this year's Arctic temps and QBO index through June, I found a very similar match and that year was 2010.

Check this out, here is the chart below showing the current state of Arctic temps through mid July...
meanT_2018.png

2010...notice the drop in arctic temps mid summer towards 0C...same timing, and if you also compare both charts from Day 75 they are behaving similarly. Both years start with a similar QBO index value in the -10's gradually decreasing, however, in 2010, it bottomed out in the month of May (-26.28) and continued to rise into positive by Aug and continued + through Autumn/Winter.



meanT_2010.png


Now, when I looked at the NAO/AO index values that season (2010-2011), from Oct-Jan it had a general -AO and at times a major -AO. It flipped positive Feb-Apr. In terms of the NAO, I would say it was generally slightly negative in Oct, neutral through 1st half of Nov, then second half of Nov it tanked and stayed negative from Dec-Jan, reversed positive in Feb-Apr. I'd say if the QBO continues to show declines and remains negative throughout the Autumn/Winter we stand a very good chance to see significant high lat blocking this cold season.

With all this in mind, I find it hard to believe that we will not see blocking. In fact, there is evidence that it could be rather significant. I'm going to pay attention in the regions of Scandinavia and Alaska as my two hot spots this Autumn.


Yes, yes, yes, aaaaaaanndd yes. There is a near 90% chance, in my book that the PV gets demolished this winter. I literally cannot see how it can't. I cannot imagine 2010 with the fuel of a warm neutral or weak Niño and that juice off the coast of SoCal and Baja. My take would be that if you blended this year and 2010 together, would be something like maybe 1917-1918. I remember back in 2013, a lot of these years in some old boards I was on came up around this time along with 1977-78. The fact also, that I haven't seen an analog set with many years past 1990 in it in awhile also speaks pretty good volumes to what we may be looking at this fall and winter.