Name: SnowSure MCP Server
Author: SnowSure

Tier C — ENSO-proof

North America

Opens December 3, 2026

Best months to book: February, March, January · last season + 30-yr record

Scroll for happiness

Opens Dec 3

Weather data is still collected for informational purposes.

Last Snowfall

Oct 30

today

Past 24 Hours

1cm

Past 48 Hours

1cm

Past 10 Days

1cm

7-Day Forecast

9cm

Snow Depth

Updated: Oct 30, 11:02 PM•Weather at base: 2,042m

SnowSure™ Score2025-26 season

Opens Dec 3

Diamond Peak opens December 3, 2026. Here is when it is usually best to book.

Best months to book

#1February84cm avg · last season 34.7
#2March84cm avg · last season 22.6
#3January93cm avg

Best weeks to book

#1 1 Mar – 7 Mar · last season 33.1
#2 22 Feb – 28 Feb · last season 34.7
#3 8 Mar – 14 Mar · last season 26.1

Ranked on 25% last season's SnowSure score (2025-26) · 75% 30-year snowfall and base-depth record. The live score returns when the lifts turn.

Snow Summary

Updated Oct 30 at 11:02 PM

Snow qualityLightAverageHeavy

Freezing line

18cm

Season

1cm

Past 10 days48H 1cm · 24H 1cm

0cm

Today

9cm

Next 6 days

Days 8–14 · Pro

Seasontotal

Wed28

Thu29

14 daystotal

—

TueOct 20

Wed21

Thu22

Fri23

Sat24

Sun25

Mon26

Tue27

TODAY30

Sat31

SunNov 1

Mon2

Tue3

Wed4

Thu5

Fri6

Sat7

Sun8

Mon9

Tue10

Wed11

Thu12

Freezing line

Snow qualityLight· bestAverage· okayHeavy· wet, skis heavy

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

No measurement at mid height (2,323m) reached us: past snow shown is the model's estimate at the summit.

Hourly Forecast

	30 Fri 4° / -1°			31 Sat 2° / -1°			1 Sun 2° / -3°			2 Mon 7° / -2°			3 Tue 6° / -3°			4 Wed 4° / -3°			5 Thu 7° / -1°			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	6 Fri	7 Sat	8 Sun	9 Mon	10 Tue	11 Wed	12 Thu
Conditions	❄️	⛅	❄️	🌧️	🌧️	❄️	🌧️	☀️	☀️	🌤️	☁️	☁️	☀️	🌧️	❄️	☁️	☀️	☀️	☁️	☀️	☀️	🌤️	☁️	☁️	☁️	⛅	⛅	🌧️
	light snow	some clouds	light snow	light drizzle	light drizzle	snow	light drizzle	clear	clear	mostly clear	cloudy	cloudy	clear	light drizzle	light snow	cloudy	clear	clear	cloudy	clear	clear	mostly clear	cloudy	cloudy	cloudy	some clouds	some clouds	light drizzle
Mid-mountain2,323 mModeled
Temp°C	2°	5°	2°	1°	2°	1°	-1°	3°	-1°	0°	6°	0°	3°	8°	2°	1°	6°	1°	3°	7°	2°	4°	4°	6°	7°	7°	5°	3°
Feels like°C	-2°	0°	-2°	-1°	-1°	-2°	-4°	-1°	-3°	-2°	4°	-1°	1°	-1°	-1°	-3°	2°	-3°	2°	5°	1°	4°	5°	7°	8°	7°	7°	4°
Snowcm	0.2	·	·	0.9	1.3	3.9	0.4	0.1	1.5	·	·	·	·	0.1	0.3	·	·	·	·	0.1	0.1	0.1	·	·	·	0.9	5.3	·
Precipmm	0.9	0.3	0.2	2.7	4.5	7.0	0.6	0.1	1.9	·	·	·	·	0.2	0.3	·	0.1	0.1	0.1	0.1	0.3	0.3	·	·	0.6	4.8	28.7	0.6
Windkm/h	13	17	8	3	14	6	7	8	6	6	5	5	10	22	5	7	9	5	3	3	4	3	5	4	7	6	7	16
Summit2,603 mModeled
Temp°C	0°	3°	0°	0°	1°	-1°	-3°	1°	-3°	-2°	5°	-2°	1°	6°	0°	-1°	4°	-1°	1°	5°	0°	2°	2°	5°	6°	5°	3°	1°
Feels like°C	-4°	-2°	-4°	-3°	-3°	-4°	-6°	-3°	-5°	-4°	2°	-3°	-1°	-3°	-3°	-5°	0°	-5°	0°	3°	-1°	2°	3°	5°	6°	5°	5°	2°
Snowcm	0.7	·	·	2.1	2.3	5.4	0.4	0.1	1.9	·	·	·	·	0.1	0.3	·	·	0.1	0.1	0.1	0.2	0.3	·	·	0.3	1.4	7.5	0.3
Precipmm	1.2	0.6	0.3	3.1	4.9	7.8	0.6	0.1	2.0	·	·	·	·	0.2	0.3	·	0.1	0.1	0.1	0.1	0.3	0.3	·	·	0.7	4.8	28.7	0.6
Windkm/h	13	17	8	3	14	6	7	8	6	6	5	5	10	22	5	7	9	5	3	3	4	3	5	4	7	6	7	16
Base2,042 mModeled
Temp°C	4°	7°	4°	3°	5°	3°	1°	5°	1°	2°	8°	2°	5°	10°	3°	2°	8°	3°	4°	9°	4°	6°	6°	9°	10°	9°	7°	5°
Feels like°C	0°	2°	1°	1°	1°	0°	-2°	1°	-1°	0°	6°	1°	3°	1°	1°	-1°	4°	-1°	4°	7°	3°	6°	7°	9°	10°	9°	9°	6°
Snowcm	·	·	·	0.1	0.2	1.3	0.3	0.1	0.6	·	·	·	·	·	·	·	·	·	·	·	·	·	·	·	·	1.1	7.5	·
Precipmm	1.0	0.8	0.1	2.2	4.3	6.2	0.6	0.1	1.8	·	·	·	·	0.2	0.3	·	0.1	0.1	0.1	0.1	0.3	0.3	·	·	0.6	5.0	28.7	0.6
Windkm/h	13	17	8	3	14	6	7	8	6	6	5	5	10	22	5	7	9	5	3	3	4	3	5	4	7	6	7	16
Humidity%	95	67	91	96	92	96	85	49	88	67	47	77	45	67	78	89	63	92	63	60	77	57	54	58	47	38	39	52
0°C linem	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	2,900	2,950	3,400	3,350	3,550	3,100	2,750
Sunhours																						8.8	8.8	6	8.8	8.7	8.7	8.7

Freeze line is the height where rain turns to snow. Plain: straight from the models. Marked ○: estimated from temperature. Sun is hours of actual sunshine, not day length; blank means we have no reading.

Forecast Range · SnowSure Pro

Every model for Diamond Peak, side by side for 14 days

Where the models agree, where they split, and which one has been most accurate here.

Unlock with Pro

SnowSure™ blend — verified model weighting

The black line is not a simple average. For Diamond Peak (cascades), 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

Pacific Northwest & BC region

14 Day map is in SnowSure ProUnlock with Pro

El Niño Outlook · Winter 2026-27

Diamond Peak El Niño rank & forecast

Diamond Peak ranks #235 of 488 SnowSure resorts — Tier C, −1% in strong El Niño winters.

Tier C — ENSO-proof: Strong El Niño winters looked like a normal year here — within about ±3% of this resort’s own 30-year snowfall average. Not a jackpot, not a bust: a hedge if you’re planning around El Niño.

#235 of 488Tier C — ENSO-proof

Strong-event signal: −1% vs this resort's 30-yr avg

In the three strongest El Niño winters on record ('97-98, '15-16, '23-24), Diamond Peak averaged -1% versus its own 30-year snowfall baseline. El Niño has historically made little difference here — this is an ENSO-proof mountain, for winter 2026-27 as in past events. Analog winters: '97-98 -27%, '15-16 -14%, '23-24 +37%. A pattern, not a promise.

'97-98 −27%'15-16 −14%'23-24 +37%

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 10 past El Niño winters at Diamond Peak, ERA5 season snowfall median was 419 cm (165 in), about 16% below 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

JAS 2026 · ANOM +2.16°C

Analog season median

419cm

10 El Niño winters · 16% below median

All-season median

497cm

Across 30 ERA5 seasons (2026-27)

Phase	Seasons	Median	p25–p75	Recent analogs
El Niñocurrent	10	419cm	391cm – 563cm	2023, 2019, 2018, 2015, 2014, 2009
La Niña	12	627cm	508cm – 681cm	2022, 2021, 2020, 2017, 2011, 2010
ENSO-neutral	8	486cm	386cm – 578cm	2025, 2024, 2016, 2013, 2012, 2003

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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