Wednesday Update: Historic Storm For South Central US?

1/21/26 Wednesday 2:30 am

Believe it or not, these types of storm setups are more difficult to forecast for our area than they are further to our east. Which is interesting because it has to go through us to get to them. Timing on this event is still to be determined, but it is likely to get underway sometime on Friday through Saturday or Sunday.

If I were seeing this storm dissipating or dying after it leaves our area, I would be much, much more confident in our forecast. But at the moment the models are showing a storm where everyone gets in on the action. That rarely happens.

What does historic mean? If I saw correctly, the all-time record for snowfall in Nashville is just under 18 inches…

As I said, it is easier to forecast for the South Central Plains than for us. So I am just going to put this out there. Travel will be impossible across most of Oklahoma and northern Texas.

If you think you are going to drive a route that takes you across eastern New Mexico and Oklahoma, it won’t happen. Arkansas? Forget about it.

If you are planning on airtravel that takes you anywhere in or out of Oklahoma, it isn’t going to happen. Thousands of flights are going to get cancelled during this storm. Nashville, potentially Memphis, and Dallas will likely also see major impacts this weekend. Kentucky, Virginia, DC, watchout.

I had to use a different snow output model to reflect the colder air.

This is the event snowfall in inches.

Going forward, I won’t be posting maps for what happens to the rest of the US, but I wanted to get it out there for those thinking they are going to be traveling that direction.

 

So what about us? That is the multi-million dollar question. My concerns are from my past experiences with these types of storms. When they telegraph their intentions for areas east of us so boldly, we have seen the energy from these systems go by us so quickly that we mostly get missed in the lower elevations.

That said, there is potential for an NW flow component on the backside of this storm, bringing a lot of low-density, very high-ratio snow to the Northern and NW San Juans.

Assuming everything comes together for us, a lot of snow could fall for everyone. Hopefully, you did not skip over everything just to see these maps. I have very low confidence in these totals for our area. So why show them? Just to show you what would be possible in a near perfect set up. This is snow in inches.

This setup shows the cold air arriving at the perfect time, and the moisture and primary and secondary energy sticking around long enough. If that happens, these totals would be too low by 50-100%.

Again, my confidence level is not high for our area, but very high that a major winter storm will result in a huge travel mess east of Colorado.

Stay tuned. For now, I am not going to be able to give anyone solid advice on traveling in SW Colorado.

I just noticed I forgot to put the “D” and “T” on the maps. I don’t have time to fix that right now, but I will include it in the future.

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Monday Update: Changes This Week?

1/19/25 Monday 3 am

It was not my intention to go so long without posting. It’s been a rough week. I need to come to terms with the fact that I cannot plan on anything in the future, or schedule anything. My life is only predictable about 4 hours into the future on any given day if I am lucky.

Enough of that, I will figure it out. Based on some of the emails I am getting, people have not been watching the national weather. If you haven’t been following it, the warm, dry weather we have been experiencing is affecting only about a third of the US.

Snow in Alabama yesterday, snow in Florida yesterday. Moderate snow in Georgia. This is the second winter in a row that snow has fallen in these areas. Before last winter it had been in the mid-1950s since this happened in Florida .

Models show a big snow and ice event next weekend evolving out of the remnants of a storm that may (or may not) affect us by later this week. The likely track would be across New Mexico, into Northern Texas, and across the Gulf States, then up the east coast (again).

I am going to be very cautious with this one for our area, because at this point, I see a lot that can go wrong with this storm. It is already showing telltale signs that it could miss us. However, if everything goes right, it would likely have its biggest impacts across the southern portions of the forecast area.

Here is where the country is at as of now.

Let’s continue with “the big picture” for now and look at the whole country.

Tuesday night

Thursday Morning

Friday Morning- Closed low now on shore, trying to tap moisture. Arctic air expands

Regional view Friday morning through Sunday morning.

Friday morning state view

High pressure finally drives out the warmer air on the west slope. Notice how moisture starved the storm is at the point

If this verified it would deposit 5 to 15 inches of fluffy snow across the forecast area. Obviously, things will change between now and next weekend.

As I said a lot can go wrong  between now and then. Be diligent, stay tuned, don’t panic, don’t bet the farm on it. I will be tracking it.

I haven’t put together the MJO part 2 post yet. However, things are happening.

Here is the European models forecast. Notice the MJO is finally active, out of the circle of weather death, and up in phase 6.

The numbers on the dotted line correspond to the date, The black line is the past, the redline is current. Notice the “20” on the red line? That is where the MJO is tomorrow. It then shoots through phase 7 (which is good, phase 7 is not favorable for us). Then into phase 8.

We have not been in phase 8 since the last time we had snow. All you need to know is phase 8, 1, and 2 are where we want to be if we want cold and snow.

Here is what it looks like when we hit phase 8 on Saturday.

As we go into these phases “favorable” is the key word. Phases 8,1 and 2, are favorable for winter weather here, but it does not guarantee it.

At some point, I will be able to get into the phases in more detail, but I wanted to show you briefly how it works since I have been talking about it for so long.

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Sunday Update

1/11/26 Sunday 8 am

What a great storm! Yes, seriously! Well, not for most people in the forecast area; however, if you were “under the enhancement,” you were very happy!

Most reports were 5 to 12 inches across the south and southeast portions of the forecast area. Farmington did very well with 8+ inches reported. Across the south, the highest totals were east of 550 and south of 160. One of the least snowy areas in the forecast area.

Up north, Ouray won with a reported total of 19 inches.

We are going to go back to warmer drier conditions as winter returns to the eastern half of the US (again) and there will be very little to talk about the next few days.

I am going to take a few days and do two things:

1: Attempt to figure out what to expect for the rest of the winter. La Niña is collapsing. Latest ENSO models show us moving into the neutral phase (La Nada if you prefer). Historically, our area experiences its most precipitous periods during the neutral stages.

2: Finish my MJO discussion. I will repost the first discussion immediately prior to releasing part 2.

It should be towards the end of the week.

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Friday Morning

1/9/16 Friday 5 am

It appears a narrow moderate band of snow arrived overnight from Durango to the east along the 160 corridor into Archuleta County, as I observed on the European model and posted yesterday afternoon.

US 550 MP 020.95 NB at US 160 in Durango: Looking at Intersection

US 550 MP 016.60 NB at EB US 160 Roundabout Ramp in Durango: Looking East

Given the European model’s nearly 7-mile margin of error, it performed much better than the GFS.

It missed DW2 for the most part compared to what I see on the webcams around and east of Durango. But I am happy that some of you are waking up to snow this morning!

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Thursday Afternoon: Snow Returns Tonight

01/08/26 Thursday 3 pm

I am just saying, don’t be surprised if a couple of inches of snow, or more, fall over the southern portions of the forecast area overnight and tomorrow before moving out of the area in the afternoon.

There is a big divide between the GFS and European at moment. GFS has more snow in the northern forecast area (north of Purgatory).  The European model actually stretches the snow from New Mexico (Farmington) into SW La Plata County, Durango, Bayfield, 240 corridor up to Vallecito, Forest Lakes, all of Archuleta County along 160 up to Wolf Creek. Enhanced snow would develop above 7,200 feet.

NWS appears to be backing the GFS, increasing the snowfall totals for the mountains by an additional 3 to 6 inches of snow tonight into tomorrow.

Maybe both will be right, that’s what I am rooting for!

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Thursday Morning

01/09/26 Thursday 2:30 am

No spinning this, the closed low that came ashore yesterday is already parked between Santa Fe and SE Colorado.

A shortwave trough is providing energy to fuel some mountain snow showers, while the cold front is still back in Nevada.

12 hours ago, I noted the lack of run-to-run consistency in the models and decided to hold off on an extended forecast.

Looks like a little snow has fallen at DWG HQ since I woke up, less than half an inch. Purgatory appears to have accumulated just under 2 inches as of 4 am. Moderate snow is falling around Telluride and light snow is falling around Wolf Creek.

As the colder air moves in, it may push some drier air ahead of it, which would temporarily shut down the precipitation. As the trough approaches, snow should redevelop, but favor the NW San Juans: Telluride, Red Mountain, and Ouray, and even Silverton may also get in on the action if the moisture gets trapped in the Valley before the cold air arrives, resulting in an overrunning event.

At best, NW San Juans are likely to see an event total of less than 8 inches. Purgatory could end up with 4 to 6 inches. Wolf Creek is a bit of a wild card but likely in the 3 to 6 inch range.

If the lower and mid-elevations end up with 1 to 3 inches, I would now consider that a win.

What we originally hoped for with all the pieces coming together can no longer happen. Could other pieces regroup at the last minute to produce enhanced precip across the entire forecast area? Sure. But I am not betting on it.

This has evolved into a “sometimes it just snows” event. It is winter, by the way, even though it does not seem like it.

All is not lost. I still see signs of a reversal before winter is over. It will likely come up after another bout of warm weather, briefly, before the pattern flips.

If I see an abrupt shift throughout the day, I will post.

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Wednesday Forecast Update

01/07/26 Wednesday 3 pm

The all-important HiRes NAM 3km model shifted its snowfall forecast for the entire event from this :    (By the way, if you are new, this is inches of snow, the colors correlate with scale)

 

To this in a 6-hour period. The difference? In the first one, the closed low was offshore; in the second, the low was onshore at initialization.

So here is what I am going to do. I will be up early and post with the latest data. This is a two-phase storm with phase two forecasted to be stronger. I expect snow when you wake up, but minimal impact early on, so it won’t be too late for me to post my expectations for event totals.

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Wednesday Morning Update

1/7/26 Wednesday 5 am

I have been studying the models this morning, most show the closed low coming ashore in Northern Baja between 10 am and 2 pm today.

The system will have two components: a shortwave arriving overnight through Thursday morning, followed by a more potent trough later on Thursday.

There is a pretty good chance we will see a Winter Weather Advisory for the lower elevations before both systems depart the area. Southern mid-elevations may receive as much precipitation as the mountains, but snow ratios will offset the overall totals, especially on Thursday evening. As I have been saying, not a big storm, but an extremely efficient snow producer. The most efficient we have seen this season (for this discussion, “efficient” means making the most of little).

My initial take is 2 to 6 inches across the southern half of La Plata County. Perhaps 4 to 10 inches of snow across the mountains by late Friday. Mid-elevations will likely be between those totals. I am going to forecast the two-day totals for this event.

I will leave you with that, so I can “do what I do,” and I plan to get my initial forecast out by this afternoon.

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Tuesday Update: Trading Places

1/6/26 Tuesday 3 am

As I mentioned yesterday, the models will struggle with accuracy until they have something on land to track. The latest data from all models points to midday on Wednesday for that closed low to come ashore south of San Diego and track northeast.

I was surprised by the brief light snow flurries that fell across the mid- and lower elevations yesterday morning. “Sometimes it just snows…”

The most significant change in the last 24 hours is in the GFS model. The GFS is now all in on the late-week storm. At the same time, the European model is now playing with lower totals. We should see better alignment among the models tomorrow afternoon.

I will try to stay neutral until tomorrow, but I am excited to see how this comes together. As for low-elevation snow, I believe it will be all or none. I do not see this as a warm, rainy, high-elevation event; instead, I see a hit-or-miss. I am also still in the camp that if it does “hit”,  it will not be a big storm, but it will be efficient in snow production.

In other news, the MJO is still expected to emerge in about 10 days, so after this storm, we will have plenty to discuss!

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Monday Morning Update

1/5/26 Monday 3:30 am

For today, expect flurries over the higher elevations, mainly north of Electra Lake.

Yesterday, I noted that the models diverged and moved to neutral on the late-week storm. Twenty-four hours later, it appears the GFS may be trying to compromise with the European.

This would bring higher-quality snow to the mountains instead of the slop we have been getting from SoCal leftovers. It would also bring some much-desired snow to the lower elevations. At this point, it may not be enough for an advisory, but it would be a welcome change!

Update 4:30 am

The new European run is out. It shows heavier precipitation in the lower elevations than in all recent runs. This is certainly positive; however, the closed low-pressure system responsible for the moisture component does not come ashore until Wednesday morning at the earliest. At that point, the models will be able to better determine its track.

I will try to remain neutral, but I am now very much looking forward to the model runs as they are released.

Looking further out, it looks like we may get some movement with the MJO around 1/14. Most models show it finally emerging from the circle of death around that time period.

After this system, I will be able to resume our MJO discussion!

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