Name: SnowSure MCP Server
Author: SnowSure

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Tier B — Favored

South America

Outstanding

↗improving

Scroll for happiness

Last Snowfall

Sep 20

today

Past 24 Hours

14cm

Reported by Corralco

Past 48 Hours

23cm

Past 10 Days

28cm

7-Day Forecast

162cm

Snow Depth

115cm

Open-Meteo model

🎿

Powder Days

2026 season

☀️

Bluebird Days

2026 season

☀️❄️

Bluebird Day predicted: Fri

Updated: Sep 20, 5:02 PM•Weather at base: 1,440m

SnowSure™ ScoreAI

Outstanding

↑improving

Exceptional season - 813cm already this season!

Corralco is experiencing heavy snowfall with 14cm in the last 24 hours and a total of 23cm in the past week, bringing the snow depth to an estimated 115cm. With a strong season total of 813cm so far, conditions are excellent as we head into the next two weeks.

AI-generated summary

✓

Depth

115cm depth — excellent coverage.

✓

Recent

In the past week, 23cm of new snow has fallen.

✓

Forecast

162cm in the next 7 days.

✓

Historic

This season's snow total is 138% above the 5-year average to date of 591cm.

Data updated Sun, Sep 20, 05:02 PM UTC

Snow Summary

2,400m

ECMWF GFS GEM JMA ICON Météo-Fr

Updated Sep 20, 2026 at 5:02 PM

28cm

24h

162cm

Past 10d

7-Day Forecast

Prev10d

Now20

M21

T22

W23

T24

F25

S26

Days 8–14 and every model are in Pro.Unlock with Pro

Past

Today

Forecast

28cm

24h

162cm

Pro

Past 10 Days

7-Day Forecast

Days 8–14

28cm

Previous10 Days

TODAYSep 20

MonSep 21

TueSep 22

WedSep 23

ThuSep 24

FriSep 25

SatSep 26

Days 8–14 and every model are in SnowSure Pro.

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Previous 10 Days

Today / High Snow

7-Day Forecast

Weekend

Historical data from Open-Meteo archive • Forecast: SnowSure™ multi-model blend

Hourly Forecast

	20 Sun -5° / -9°			21 Mon -4° / -10°			22 Tue -3° / -12°			23 Wed -3° / -6°			24 Thu 0° / -4°			25 Fri -2° / -5°			26 Sat 1° / -6°			Days 8–14 and every model are in SnowSure Pro.Unlock with Pro
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	27 Sun	28 Mon	29 Tue	30 Wed	1 Thu	2 Fri	3 Sat
Conditions	❄️	❄️	❄️	❄️	❄️	☁️	☁️	❄️	☁️	❄️	🌧️	❄️	🌧️	🌧️	🌧️	🌧️	🌧️	🌧️	🌧️	🌧️	🌧️	❄️	☁️	⛅	☁️	⛅	☀️	🌤️
	snow	heavy snow	snow	snow	light snow	cloudy	cloudy	snow	cloudy	snow	light rain	snow	rain	light rain	light rain	drizzle	light rain	drizzle	drizzle	light drizzle	drizzle	light snow	cloudy	some clouds	cloudy	some clouds	clear	mostly clear
Summit2,400 mModeled
Temp°C	-5°	-6°	-6°	-9°	-5°	-8°	-7°	-4°	-8°	-5°	-3°	-5°	-3°	-1°	-3°	-3°	-2°	-4°	-2°	0°	-4°	-4°	-4°	-4°	-5°	-6°	-5°	-3°
Feels like°C	-11°	-11°	-12°	-13°	-10°	-13°	-11°	-7°	-12°	-9°	-8°	-9°	-8°	-5°	-8°	-8°	-7°	-8°	-6°	-5°	-8°	-8°	-7°	-8°	-10°	-11°	-9°	-6°
Snowcm	5.6	7.4	14.1	1.2	0.4	1.8	0.1	2.9	5.7	10.9	6.8	13.2	11.7	6.6	15.2	4.6	6.7	8.5	2.2	3.6	7.4	5.7	·	·	·	·	·	·
Precipmm	8.0	10.5	20.1	1.7	0.5	2.6	0.2	4.2	8.1	15.6	9.7	18.9	16.7	9.4	21.7	6.6	9.6	12.1	3.2	5.2	10.5	8.2	·	·	·	·	·	·
Windkm/h	20	18	16	11	14	9	3	3	3	2	11	6	18	16	14	17	14	10	7	14	5	13	4	12	24	17	8	6
Mid-mountain1,920 mModeled
Temp°C	-2°	-3°	-3°	-5°	-2°	-5°	-4°	-1°	-5°	-2°	0°	-2°	0°	3°	0°	0°	1°	-1°	1°	3°	-1°	-1°	-1°	-1°	-2°	-3°	-2°	0°
Feels like°C	-8°	-8°	-8°	-10°	-7°	-9°	-8°	-4°	-8°	-5°	-4°	-5°	-5°	-2°	-4°	-5°	-3°	-4°	-2°	-1°	-4°	-5°	-4°	-5°	-7°	-7°	-6°	-3°
Snowcm	5.6	7.4	14.1	1.2	0.4	1.8	0.1	2.9	5.7	10.9	6.8	13.2	10.1	·	13.3	4.6	4.3	8.5	1.3	·	6.1	5.3	·	·	·	·	·	·
Precipmm	8.0	10.5	20.1	1.7	0.5	2.6	0.2	4.2	8.1	15.6	9.7	18.9	16.7	9.4	21.7	6.6	9.6	12.1	3.2	5.2	10.5	8.2	·	·	·	·	·	·
Windkm/h	20	18	16	11	14	9	3	3	3	2	11	6	18	16	14	17	14	10	7	14	5	13	4	12	24	17	8	6
Base1,440 mModeled
Temp°C	1°	1°	0°	-2°	1°	-2°	-1°	3°	-2°	1°	3°	1°	3°	6°	3°	3°	4°	3°	4°	6°	2°	2°	2°	2°	1°	1°	1°	3°
Feels like°C	-4°	-4°	-5°	-6°	-3°	-6°	-4°	0°	-5°	-2°	-1°	-2°	-1°	2°	-1°	-1°	0°	-1°	1°	3°	-1°	-1°	-0°	-2°	-4°	-4°	-2°	0°
Snowcm	4.4	7.4	9.2	1.2	0.4	1.8	0.1	1.5	3.3	7.7	0.6	5.7	0.1	·	0.3	0.1	·	0.1	·	·	0.9	2.7	·	·	·	·	·	·
Precipmm	8.0	10.5	20.1	1.7	0.5	2.6	0.2	4.2	8.1	15.6	9.7	18.9	16.7	9.4	21.7	6.6	9.6	12.1	3.2	5.2	10.5	8.2	·	·	·	·	·	·
Windkm/h	20	18	16	11	14	9	3	3	3	2	11	6	18	16	14	17	14	10	7	14	5	13	4	12	24	17	8	6
Humidity%	95	91	95	93	65	93	52	69	91	97	81	95	91	83	93	92	89	97	94	75	96	88	72	71	66	71	68	61
0°C linem	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Forecast Range · SnowSure Pro

Every model for Corralco, side by side for 14 days

Where the models agree, where they split, and which one has been most accurate here. Free for 14 days, then yearly.

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SnowSure™ blend — verified model weighting

The black line is not a simple average. For Corralco (andes), we combine seven global weather models using weights learned from daily forecast verification — comparing each model's prediction to measured snowfall (SNOTEL, resort reports, ERA5).

1.Horizon buckets: days 1–3, 4–7, and 8–14 each get separate weights — short-range skill differs from long-range.
2.Regional calibration: weights come from verified error in this geography (Rockies, Alps, Japan, etc.), recalculated weekly.
3.Ground truth only: we never grade a forecast against another model — only against measured snow.

Building verification history for this resort.

How we verify forecasts →

Snowfall Forecast Maps

Andes (Chile & Argentina) region

El Niño Outlook · Winter 2026

Corralco El Niño rank & forecast

Corralco ranks #148 of 488 SnowSure resorts — Tier B, +5% in strong El Niño winters.

Tier B — Favored: Modest El Niño upside (+3% to +8% vs normal). Often a solid pick, without the biggest Andes-style swings.

#148 of 488Tier B — Favored

Strong-event signal: +5% vs this resort's 30-yr avg

In the three strongest El Niño winters on record ('97-98, '15-16, '23-24), Corralco averaged +5% versus its own 30-year snowfall baseline. The pattern has historically been a friend here. With a record-strength event forecast for winter 2026, Corralco sits on the favorable side of the ledger. Analog winters: '97-98 -12%, '15-16 -0%, '23-24 +28%. A pattern, not a promise.

'97-98 −12%'15-16 0%'23-24 +28%

In-season scorecard

Predicted signal

+5%

Measured to date

+54%

Season total

813 cm

Vs predicted

+49%

Predicted signal vs measured season-to-date against this resort's own climatology.

Signal = average snowfall in the three strongest El Niño winters since 1996 ('97-98, '15-16, '23-24) vs this resort's own 30-year ERA5 baseline. n=3 — a lean, not a law. Updated monthly against measured snowfall Dec–Mar.

Full El Niño report →

Key

What the tiers mean

% vs each resort's own 30-year average in strong El Niño winters.

Tier	Signal	Means
A — Prime terrain	≥ +8%	Historically much snowier than normal.
B — Favored	+3% to +8%	Modest upside vs normal.
C — ENSO-proof	about −3% to +3%	Near-normal snowfall — a hedge, not a jackpot or bust.
D — Late bloomer	−3% to −8%	Often lighter early — aim Feb–Mar.
E — Timing play	≤ −8%	Often lighter overall — aim late winter.

ENSO seasonal analog

History · not a forecast

In 6 past El Niño winters at Corralco, ERA5 season snowfall median was 644 cm (254 in), about 5% above this resort’s long-term median. This is a historical analog from reanalysis — not a prediction of this winter’s storm track.

Prevailing ONI

El Niño

JJA 2026 · ANOM +1.8°C

Analog season median

644cm

6 El Niño winters · 5% above median

All-season median

615cm

Across 31 ERA5 seasons (2026)

Phase	Seasons	Median	p25–p75	Recent analogs
El Niñocurrent	6	644cm	620cm – 708cm	2026, 2023, 2015, 2009, 2002, 1997
La Niña	4	628cm	533cm – 704cm	2022, 2010, 1999, 1998
ENSO-neutral	21	606cm	549cm – 729cm	2025, 2024, 2021, 2020, 2019, 2018

Season snowfall from Open-Meteo ERA5 reanalysis (~9 km). ENSO phase from NOAA CPC Oceanic Niño Index. Relative phase differences are more trustworthy than absolute cm totals. Source: NOAA CPC Oceanic Niño Index + Open-Meteo ERA5 via SnowSure season archive.

Local Reports

0 reports

How accurate is this forecast?

We verify every forecast against what actually fell — see the model-by-model results.

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