Early-November Andes System
1 resort in the path, 4cm at the biggest. Watching — the models see it but do not yet agree closely.
+4CM
Predicted at Corralco
0–12cm, models far apart
Storm
Nov 2–4
1 resort in the path
Peak
Nov 3
4cm at Corralco
Predicted
4cm
Corralco · 0–12cm, models far apart
Confidence
Watching
Updated
Oct 25, 00:30 UTC
SnowSure Forecaster
Written from the blend and the model spread · updated Oct 25, 00:30 UTC
Current prediction: 0–12cm for Corralco between 2026-11-02 and 2026-11-04, 4cm our central figure. The biggest day is 2026-11-03 at 4cm. Corralco is the only resort clearing our threshold so far. Confidence is watching: the signal has crossed our threshold but the models still disagree on how much. On day one we said 38cm for Corralco; that is the number we are measured against. These figures are re-read from the latest model blend; each entry in the log keeps what we said at the time.
Forecast log
Every entry, newest first. Nothing is overwritten.
- Day 1·Oct 25·Watching·38cmFirst prediction
Confidence growing: 38cm for Corralco Nov 2–4, range 0–73.7cm
The prediction for the early-November Andes system indicates 38.2cm for Corralco, with a range of 0–73.7cm over the window from November 2 to November 4. Current data suggests a favorable pattern for snowfall, although confidence remains moderate as we continue to monitor trends. Corralco stands to gain the most from this system, potentially seeing its biggest day on November 4 with up to 14.6cm. Other resorts in the region may not receive significant accumulations based on current forecasts. A shift in the atmospheric pattern or an unexpected influx of moisture could alter these predictions, but as it stands, we are focused on Corralco.
Window Nov 2–4 · Corralco
Snow by day
Nov 1 – Nov 5, with a day either side. For each resort: where the freeze line sits against the mountain, then what falls — snow in cm, rain in mm — and the day read from those two numbers.
Corralcobase 1,440 m · summit 2,400 m
4cm snow1mm rain
Modelled at the summit, 2,400 m · snow to the base
linem
/ raincm · mm
Sun
Nov 1
Rain
Mon
Nov 2
Dry
Tue
Nov 3
Snow
Wed
Nov 4
Dry
Thu
Nov 5
Mixed
snow Tue
snowrain low, snow highraindryThe dots are the freeze line — the height where rain turns to snow. Solid: straight from the models. Hollow: estimated from temperature. Above the summit line it rains on the whole mountain; below the base line it snows all the way down. Blue bars are snow in cm, amber bars rain in mm; the totals above are their sums.
Rain / snow line
Base to summit for each mountain, with the snow line cut across them.
The system
700mb flow — where the storm is, and what is steering it. Pins sized by forecast total.
72-hour snowfall forecast for the same window.
In the path
Forecast, not observation — none of this has fallen yet. Totals are across the window. We will post what fell when the window closes.
Last updated 2026-10-25 06:30 UTC. SnowSure scans a blend of seven weather models twice daily and flags systems clearing 30cm over 72 hours, three to fourteen days out. This watch opened on 2026-10-25 with 38cm forecast at Corralco.
