Category: European Model

VIDEO: Milder Air Arrives; Late Week Model Trends…

Updated 02.07.23 @ 5:37a

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Permanent link to this article: https://indywx.com/2023/02/07/video-milder-air-arrives-late-week-model-trends/

VIDEO: Making Up For Lost Time?

Updated 01.20.23 @ 7:19a

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Permanent link to this article: https://indywx.com/2023/01/20/video-time-to-make-up-for-lost-ground/

February And Early March Long Range Discussion…

Updated 01.19.23 @ 6:15p

Our short-term products will continue to handle the snow threats this weekend and next week. In short, we have no changes to our thoughts on either of those from this morning. The 2nd storm has potential to be something much more significant, but we need to give it another 2-3 days before putting a forecast in concrete, especially this winter.

As for the longer range, a more seasonably cold brand of air is expected as we put a wrap on January, but I’m not willing to go further than that to suggest anything close to “bitter” cold is on deck- certainly given the time of the year. It’ll feel much colder, especially considering just how warm it’s been of late, but I just don’t see anything overly cold on the horizon, compared to normal.

Thereafter, the pattern drivers suggest a warmer than normal pattern will return. “Transitional” anyone? While I can’t say we’re looking at anomalies as great as what we’ve seen so far in January, I do think early and mid February will feature above to well above normal temperatures before colder than normal trends take hold late February and into early March.

The updated European Weeklies mirror the new JMA Weeklies and we see no reason to argue given the movement and overall alignment between the EPO, PNA, NAO, and AO.

Week 2

JMA Weeks 3/4

European Weeklies: Week 3


European Weeklies: Week 4


As we get out towards the latter part of February (around or after the 20th), the teleconnections mentioned above, that will likely promote the relatively warm conditions, will begin to turn around and drive a colder close to the month and open to March. In fact, there are signs the coldest anomalies of the entire winter (compared to average, not in the “absolute” form) will await for this period, and potentially continue into a good chunk of March, especially if the MJO amplitude continues and we add in a negative NAO. (I know, I know- remember that I’m only the messenger).

In the meantime, we also agree with the above normal precipitation pattern painted throughout the upcoming few weeks between the updated Weekly products.

In this active type pattern, despite the lack of bitterly cold arctic air, plenty of snow is likely still yet to fall this winter. In fact, despite the slow start, I wouldn’t be shocked if snowfall amounts end up being pretty dang close to seasonal averages with this type pattern (give or take a few inches). The ultimate irony will be if the bulk of that falls in March…

Much more in the morning around the Sunday and Tuesday-Wednesday snow threats!

Permanent link to this article: https://indywx.com/2023/01/19/february-and-early-march-long-range-discussion/

Window Opening For A Wintry Threat In The 8-10 Day Period?

Updated 01.16.23 @ 11:17a

We’ll have a more detailed video discussion posted this evening but wanted to highlight an opportunity for perhaps a more intriguing winter weather setup in the 8-10 day period.

While the time period is too far out for specifics, it does appear as if the pattern will become more favorable for cold and moisture to “marry.” It’s not necessarily a setup for a blockbuster storm, but rather a series of waves of moisture riding northeast along a pressing cold airmass moving southeast. The combination of the PNA (negative) and EPO (negative) means there should be enough resistance from the southeastern ridge to lead to this being more of an Ohio Valley and interior Northeast threat vs “suppression depression.”

For now let’s just circle next weekend into early the following week to see if more of the models begin to catch on to this threat, similar to what the European model is already suggesting perhaps…

More later today!

Permanent link to this article: https://indywx.com/2023/01/16/window-opening-for-a-wintry-threat-in-the-8-10-day-period/

Light Snow Develops Today; Tracking Stronger Midweek Storm…

Updated 01.08.23 @ 9:55a

While the day has started off on a quiet note, light snow will overspread portions of central Indiana, including Indianapolis this afternoon. This won’t be a big deal by any stretch of the imagination but a light coating is possible along the I-70 corridor by evening as the light snow becomes more persistent. This is all part of the same weak, pesky system we’ve been tracking since about this time last week (yes, the same one that at times was modeled to be a much bigger deal). In any event, please keep us posted on what you’re seeing this afternoon into the evening hours.

The steadier light snow should end from west to east between 5p and 8p and give way to a quiet start to the work week. By this time, all eyes will be on a much stronger, more organized system that will move into the Ohio Valley. This should be a mostly liquid event, but we do note both the GFS and European models working enough cold air into the system to all the rain to begin mixing with and changing to wet snow Thursday PM.

European forecast model shows rain beginning to mix with and change to snow Thursday PM.
GFS model is also on board for the potential of rain changing to snow Thursday afternoon.

Of course timing is always an important part of changeover scenarios, especially on the tail end of the precipitation shield. However, given the 500mb pattern in eastern Canada, we should watch for the possibility of the overall solution trending colder with time over the next couple of days.

As additional upper level energy dives in behind the primary low, wind-whipped snow showers and squalls with additional light accumulation potential will be present to close the work week.

Side note, I’ve been without a Fiber connection since last Thursday (thanks to a main line cut). Trying to make do the best way possible, but hence a reason for the lack of videos the past couple of days. Hopeful things will get back to BAU tomorrow, but know your patience is appreciated greatly right now. Regardless, we’ll be back with another update this evening reviewing trends for mid-late week off the 12z suite.

Permanent link to this article: https://indywx.com/2023/01/08/light-snow-develops-today-tracking-stronger-midweek-storm/

Reasons Why Another Significant Pattern Change Likely Looms In January…

Updated 12.30.22 @ 7:50a

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Permanent link to this article: https://indywx.com/2022/12/30/reasons-why-another-significant-pattern-change-likely-looms-in-january/

Potential Pre-Christmas Winter Storm; MJO Impacts On The January Pattern…

Updated 12.13.22 @ 9:48p

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Permanent link to this article: https://indywx.com/2022/12/13/potential-pre-christmas-winter-storm-mjo-impacts-on-the-january-pattern/

Updated Data In On Our Thanksgiving Storm System…

Updated 11.16.22 @ 11:49p

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Saturday Morning Rambles: Wind The Big Story Today; Warmth On Borrowed Time…

Updated 11.05.22 @ 9:22a

I. Showers will scoot east of the region by late morning but we’re not done with the rain just yet. A skinny line of storms will likely blow across the state during the early to mid afternoon hours.

3p forecast radar

The other big story today will, of course, be the wind, including wind gusts around of 50-60 MPH. Strongest winds will come between 12p and 5p before diminishing this evening. Needless to say, batten down the hatches!

II. High pressure will supply an extended period of quiet weather through the bulk of the week ahead but there are changes on the horizon.

Our next cold front will blow into town Thursday night or Friday morning. As of now, it looks like it’ll be moisture starved but unlike this current system, the air behind the frontal passage will be drastically colder. How do highs in the lower 40s and lows in the lower 20s sound next weekend?

III. Next week’s front will be a “game changer” in that it will likely be the first attempt at bringing a more sustained colder pattern east. Note the latest European ensemble guidance below for the 10-15 day period. Needless to say, warmth is, indeed, on borrowed time…


Permanent link to this article: https://indywx.com/2022/11/05/saturday-morning-rambles-wind-the-big-story-today-warmth-on-borrowed-time/

VIDEO: Gorgeous Weekend; Tracking A Cold Front In The New Week Ahead…

Updated 10.20.22 @ 7:38a

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Permanent link to this article: https://indywx.com/2022/10/20/video-gorgeous-weekend-tracking-a-cold-front-in-the-new-week-ahead/

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