South America Daily Snow
By Luke Stone, Forecaster Posted 17 days ago June 6, 2025
Another Dry Week Ahead, Possible Pattern Change Late Next Week
Summary
The weak mid-week storm is in our rear view mirror now as we enter another extended stretch of dry weather. High pressure will keep storms south of the forecast area from Wednesday through the middle of next week. There are some signs of a pattern change for the latter part of next week.
Short Term Forecast
The weather over the next five days is fairly uneventful, as high pressure prevails. Our attention remains focused on a possible late-week pattern change and a return to active and snowy weather.
The models have been showing a possible pattern change for several days, with confidence increasing slightly. There has been some consistency in the ridge breaking down around midweek, with storms arriving as early as Wednesday night. Some of the model runs have been showing a significant storm around this time, but I think it's too early to get excited.
I think we will see a pattern change next week, but the size of the storm is to be determined. Let's take a look at the upper-level pattern from some of the models for next week. Below are the deterministic and ensemble model forecasts for the upper-level pattern on Wednesday evening next week.
Both deterministic and ensemble models show a storm moving into the Andes around Wednesday evening next week. The consistency across models and ensembles is promising. The models have the storm track far enough north to impact the northern zone, which is always a plus. I will keep an eye on this potential pattern change and have an update on the storm in my next post.
Extended Forecast
There are some signs of a second storm moving into the region later next week into the weekend, but those details are even less clear. I'll have an update on the long-range in my next post, too, which will be on Sunday or Monday.
Thanks for reading the South America Daily Snow!
Luke Stone
Forecaster, OpenSnow
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