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Winter 2022/23 Medium/Long Range Discussion


Chicago Storm
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11 minutes ago, Hoosier said:

One of these times it won't be, which is why it would be nice to bag a good amount of snow prior to then. 

Monthly SN anomalies map showed Nov and Dec BN (check), with Jan AN, and Feb more normal-ish this year. We are very overdue for Jan to show-up. It's been a bit colder but almost as snowless as Dec.

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50 minutes ago, RogueWaves said:

Monthly SN anomalies map showed Nov and Dec BN (check), with Jan AN, and Feb more normal-ish this year. We are very overdue for Jan to show-up. It's been a bit colder but almost as snowless as Dec.

January has been more the wild card. Certainly snowier tham Dec, but we are due for a snowy Jan. The theme hast been AN snow in November, February, & April and BN in December and March. But as hoosier said, we can't always count on Feb to be rockin. One of these years it won't be (likewise one of these years we will get a snowy December again).

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On 12/22/2022 at 6:59 PM, Chicago Storm said:

Haven't had a chance to put out much in the way of thoughts regarding the final 1/3rd of December, but a quick glance at ENS guidance will tell you all you need to know...

We transition from current cold period, to a mix of cool/mild for next week, and likely into early January as well. If you're looking for a quality snow pattern, good luck...You'll need to bank on thread the needle opportunities, even into early January.

A little more this now...

While we have been cold in the wake of the pre-Christmas storm system, the next pattern change has already been underway on the large scale. After being in the COD for quite a while, the MJO is on the move through low amplitude phases of 4-5-6-7, through the first 1/3rd of January. At this time of year a majority of those phases are warmer phases, but given the low amplitude, the effect will not be as great as otherwise possible with a high amplitude push. Also what is changing is that we are seeing the larger scale blocking and teleconnection pattern breaking down. The significant -AO/-NAO has finally been crumbling, and the -EPO push is fading as well. We are now transitioning into more of a +AO/+NAO/+EPO pattern, with a PNA that will be in flux. Another thing to mention is the SPV is on the move, after being anchored in the N Canada/Greenland area for a while, it will slide back to the other side of the pole in the vicinity of the Russia/Arctic Coast for a while. 

All in all, temperatures will be a mix of cool/mild to end of December and continue through the first 1/3rd of January, with things being more mild than not. The weather pattern should be fairly active across the CONUS, but with mostly rainer threats for most (Not all) of the sub-forum. Best chances for snow will be across the NW/N portion of the sub-forum, or if a thread the needle scenario can occur elsewhere.

There are some hints that things may attempt to change a bit for mid-month, but those signals are still a while off.

ecmwf-ensemble-avg-namer-z500_barbs-2336800.thumb.png.6ac8bf0a4dec1a9663d5c6467d50c509.png

ecmwf-ensemble-avg-namer-z500_barbs-2790400.thumb.png.90fe690213dd9d1ecd01c4b440e905db.png

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I’ve been quietly watching the system coming up early next week. The metro has been riding the line between cold rain (GFS) and warning criteria snows (Euro) MSP pulled the trigger on a WSW today for 3-7”.

Personally I think there’s a big divide per usual between northern and southern ends of the metro with 3” south and 6-8”+ north. Been fun to track but wish there was more potential across the subforum to aid the discussion. 

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55 minutes ago, Stevo6899 said:

It has been notoriously quiet in January since that jan 5 2014 storm? 

January 2014 was the snowiest Jan on record with 39.1". However we actually finished with normal to above normal snowfall in January 2015, 2017, and 2019.

But a majority of the time a lot of the activity comes the 2nd half of January. Below is the total snowfall at Detroit from January 15th through February 28th for the past 20 years. The average snowfall in that time frame is around 15", and actually the long term average is closer to 14". 

2002- 19.1"
2003- 24.6"
2004- 7.1"
2005- 27.2"
2006- 8.0"
2007- 20.3"
2008- 32.2"
2009- 20.6"
2010- 27.8"
2011- 39.8"
2012- 16.0"
2013- 32.9"
2014- 40.0"
2015- 31.2"
2016- 11.6"
2017- 9.4"
2018- 26.6"
2019- 21.3"
2020- 22.0"
2021- 26.8"
2022- 26.4"

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I’ve been quietly watching the system coming up early next week. The metro has been riding the line between cold rain (GFS) and warning criteria snows (Euro) MSP pulled the trigger on a WSW today for 3-7”.

Personally I think there’s a big divide per usual between northern and southern ends of the metro with 3” south and 6-8”+ north. Been fun to track but wish there was more potential across the subforum to aid the discussion. 

Man it’s bad when MSP is riding the rain/snow line in January.
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