Snow Cam Model Accuracy

labeled sample images

1.5″

mean absolute error

64%

within 1″ of truth

75%

within 2″ of truth

On the fully held-out test set — 50 labeled images the model never saw during training — the model scores MAE 1.3″, 80% within 1″. Samples below marked training image were part of fine-tuning; unmarked ones are held out.

Model reading vs. measured truth

Each dot is one labeled image. The dashed line is a perfect reading; distance from it is the error.

Per-resort summary

Same data as the cards below, in table form.

Resort	images	MAE	bias	within 2″
A-Basin	4	2.4″	1.6″	75%
Alta	4	2.0″	-2.0″	75%
Aspen Highlands	2	4.0″	0.0″	0%
Aspen Mountain	2	2.0″	2.0″	50%
Beaver Creek	4	1.6″	-1.6″	75%
Breckenridge	4	1.0″	-1.0″	75%
Brian Head	2	0.5″	-0.5″	100%
Buttermilk	1	4.0″	-4.0″	0%
Copper	4	0.5″	-0.5″	100%
Deer Valley	2	1.5″	-1.5″	50%
Discovery	2	0.5″	-0.5″	100%
Eldora	4	3.2″	-3.2″	25%
Grand Targhee	3	2.7″	-2.7″	67%
Keystone	4	0.6″	-0.1″	100%
Loveland	4	0.9″	0.6″	100%
Monarch	2	0.0″	0.0″	100%
Northstar	2	2.0″	-2.0″	50%
Park City	3	0.3″	0.3″	100%
Powder Mountain	2	2.8″	-1.2″	50%
Powderhorn	2	2.0″	-2.0″	50%
Snowbird	4	0.9″	0.1″	100%
Snowmass	2	3.0″	-3.0″	50%
Steamboat	3	1.5″	0.8″	100%
Sundance	2	0.5″	-0.5″	100%
Sunlight	2	2.0″	-2.0″	50%
Whitefish	3	1.7″	1.0″	67%
Winter Park	4	0.4″	-0.1″	100%

A-Basin

4 labeled samples · MAE 2.4″ · bias 1.6″

≈0″ conditions · 2026-02-28

0.0″

measured

0.0″

model

exact

model confidence: high

≈4″ conditions · 2026-03-11

5.0″

measured

7.0″

model

+2.0″

model confidence: medium

≈8″ conditions · 2026-05-06 training image

6.0″

measured

12.0″

model

+6.0″

model confidence: medium

A-Basin snow stake, measured 12.0 inches

≈12″ conditions · 2026-03-06 training image

12.0″

measured

10.5″

model

-1.5″

model confidence: medium

Alta

4 labeled samples · MAE 2.0″ · bias -2.0″

≈0″ conditions · 2026-02-18

0.0″

measured

0.0″

model

exact

model confidence: high

≈4″ conditions · 2026-03-04

2.0″

measured

0.0″

model

-2.0″

model confidence: high

≈8″ conditions · 2025-12-27

7.0″

measured

6.0″

model

-1.0″

model confidence: medium

≈12″ conditions · 2025-12-27

11.0″

measured

6.0″

model

-5.0″

model confidence: medium

Aspen Highlands

2 labeled samples · MAE 4.0″ · bias 0.0″

≈0″ conditions · 2026-04-27 training image

2.0″

measured

6.0″

model

+4.0″

model confidence: medium · reading is a 24-h total stake

Aspen Highlands snow stake, measured 6.0 inches

≈8″ conditions · 2026-03-07 training image

6.0″

measured

2.0″

model

-4.0″

model confidence: medium · reading is a 24-h total stake

Aspen Mountain

2 labeled samples · MAE 2.0″ · bias 2.0″

≈0″ conditions · 2026-04-27 training image

2.0″

measured

2.0″

model

exact

model confidence: medium · reading is a 24-h total stake

Aspen Mountain snow stake, measured 6.0 inches

≈8″ conditions · 2025-12-04 training image

6.0″

measured

10.0″

model

+4.0″

model confidence: medium · reading is a 24-h total stake

Beaver Creek

4 labeled samples · MAE 1.6″ · bias -1.6″

≈0″ conditions · 2026-04-04

0.0″

measured

0.0″

model

exact

model confidence: high

Beaver Creek snow stake, measured 3.5 inches

≈4″ conditions · 2026-02-12

3.5″

measured

3.0″

model

-0.5″

model confidence: medium

Beaver Creek snow stake, measured 7.0 inches

≈8″ conditions · 2025-12-04

7.0″

measured

7.0″

model

exact

model confidence: medium

Beaver Creek snow stake, measured 12.0 inches

≈12″ conditions · 2026-02-21

12.0″

measured

6.0″

model

-6.0″

model confidence: medium

Breckenridge

4 labeled samples · MAE 1.0″ · bias -1.0″

≈0″ conditions · 2026-02-07 training image

0.0″

measured

0.0″

model

exact

model confidence: high

Breckenridge snow stake, measured 4.0 inches

≈4″ conditions · 2025-12-05 training image

4.0″

measured

0.0″

model

-4.0″

model confidence: high

Breckenridge snow stake, measured 8.0 inches

≈8″ conditions · 2026-01-25 training image

8.0″

measured

8.0″

model

exact

model confidence: medium

Breckenridge snow stake, measured 12.0 inches

≈12″ conditions · 2026-01-24 training image

12.0″

measured

12.0″

model

exact

model confidence: medium

Brian Head

2 labeled samples · MAE 0.5″ · bias -0.5″

≈0″ conditions · 2026-05-20 training image

0.0″

measured

0.0″

model

exact

model confidence: high

Brian Head snow stake, measured 4.0 inches

≈4″ conditions · 2026-02-18 training image

4.0″

measured

3.0″

model

-1.0″

model confidence: medium

Buttermilk

1 labeled sample · MAE 4.0″ · bias -4.0″

≈4″ conditions · 2026-03-07 training image

6.0″

measured

2.0″

model

-4.0″

model confidence: medium · reading is a 24-h total stake

Copper

4 labeled samples · MAE 0.5″ · bias -0.5″

≈0″ conditions · 2026-05-20 training image

0.0″

measured

0.0″

model

exact

model confidence: high

≈4″ conditions · 2026-04-27 training image

4.0″

measured

4.0″

model

exact

model confidence: medium

≈8″ conditions · 2026-05-05 training image

8.0″

measured

6.0″

model

-2.0″

model confidence: medium

≈12″ conditions · 2025-12-06 training image

12.0″

measured

12.0″

model

exact

model confidence: medium

Deer Valley

2 labeled samples · MAE 1.5″ · bias -1.5″

≈0″ conditions · 2025-12-01 training image

0.0″

measured

0.0″

model

exact

model confidence: high

Deer Valley snow stake, measured 3.0 inches

≈4″ conditions · 2025-12-06 training image

3.0″

measured

0.0″

model

-3.0″

model confidence: high

Discovery

2 labeled samples · MAE 0.5″ · bias -0.5″

≈0″ conditions · 2026-05-20 training image

0.0″

measured

0.0″

model

exact

model confidence: high

Discovery snow stake, measured 4.0 inches

≈4″ conditions · 2026-01-02 training image

4.0″

measured

3.0″

model

-1.0″

model confidence: medium

Eldora

4 labeled samples · MAE 3.2″ · bias -3.2″

≈0″ conditions · 2026-02-01 training image

0.0″

measured

0.0″

model

exact

model confidence: high

≈4″ conditions · 2026-03-06 training image

4.0″

measured

0.0″

model

-4.0″

model confidence: high

≈8″ conditions · 2026-03-07 training image

8.0″

measured

5.0″

model

-3.0″

model confidence: medium

≈12″ conditions · 2026-03-07 training image

12.0″

measured

6.0″

model

-6.0″

model confidence: medium

Grand Targhee

3 labeled samples · MAE 2.7″ · bias -2.7″

≈0″ conditions · 2026-05-20 training image

0.0″

measured

0.0″

model

exact

model confidence: high

Grand Targhee snow stake, measured 4.0 inches

≈4″ conditions · 2026-01-02 training image

4.0″

measured

3.0″

model

-1.0″

model confidence: medium

Grand Targhee snow stake, measured 11.0 inches

≈12″ conditions · 2026-04-03 training image

11.0″

measured

4.0″

model

-7.0″

model confidence: medium

Keystone

4 labeled samples · MAE 0.6″ · bias -0.1″

≈0″ conditions · 2026-04-14 training image

0.0″

measured

0.0″

model

exact

model confidence: high

Keystone snow stake, measured 4.0 inches

≈4″ conditions · 2025-12-06 training image

4.0″

measured

4.0″

model

exact

model confidence: medium

Keystone snow stake, measured 8.0 inches

≈8″ conditions · 2025-11-25 training image

8.0″

measured

9.0″

model

+1.0″

model confidence: medium

Keystone snow stake, measured 12.0 inches

≈12″ conditions · 2025-12-06 training image

12.0″

measured

10.5″

model

-1.5″

model confidence: medium

Loveland

4 labeled samples · MAE 0.9″ · bias 0.6″

≈0″ conditions · 2026-04-16 training image

2.0″

measured

1.5″

model

-0.5″

model confidence: medium

Loveland snow stake, measured 5.0 inches

≈4″ conditions · 2026-05-20 training image

5.0″

measured

6.0″

model

+1.0″

model confidence: medium

Loveland snow stake, measured 9.0 inches

≈8″ conditions · 2026-05-07 training image

9.0″

measured

10.0″

model

+1.0″

model confidence: medium

Loveland snow stake, measured 11.0 inches

≈12″ conditions · 2025-10-29 training image

11.0″

measured

12.0″

model

+1.0″

model confidence: medium

Monarch

2 labeled samples · MAE 0.0″ · bias 0.0″

≈0″ conditions · 2026-05-20 training image

0.0″

measured

0.0″

model

exact

model confidence: high

≈4″ conditions · 2026-01-02 training image

4.0″

measured

4.0″

model

exact

model confidence: medium

Northstar

2 labeled samples · MAE 2.0″ · bias -2.0″

≈0″ conditions · 2026-05-20 training image

0.0″

measured

0.0″

model

exact

model confidence: high

Northstar snow stake, measured 4.0 inches

≈4″ conditions · 2026-01-02 training image

4.0″

measured

0.0″

model

-4.0″

model confidence: high

Park City

3 labeled samples · MAE 0.3″ · bias 0.3″

≈0″ conditions · 2026-05-03 training image

0.0″

measured

0.0″

model

exact

model confidence: high

Park City snow stake, measured 4.0 inches

≈4″ conditions · 2026-04-03 training image

4.0″

measured

5.0″

model

+1.0″

model confidence: medium

Park City snow stake, measured 8.0 inches

≈8″ conditions · 2026-04-26 training image

8.0″

measured

8.0″

model

exact

model confidence: medium

Powder Mountain

2 labeled samples · MAE 2.8″ · bias -1.2″

≈0″ conditions · 2026-05-20 training image

0.0″

measured

1.5″

model

+1.5″

model confidence: medium

Powder Mountain snow stake, measured 4.0 inches

≈4″ conditions · 2026-01-02 training image

4.0″

measured

0.0″

model

-4.0″

model confidence: high

Powderhorn

2 labeled samples · MAE 2.0″ · bias -2.0″

≈0″ conditions · 2026-05-20

0.0″

measured

0.0″

model

exact

model confidence: high · reading is a 24-h total stake

Powderhorn snow stake, measured 4.0 inches

≈4″ conditions · 2026-01-02

4.0″

measured

0.0″

model

-4.0″

model confidence: medium · reading is a 24-h total stake

Snowbird

4 labeled samples · MAE 0.9″ · bias 0.1″

≈0″ conditions · 2026-05-16 training image

0.0″

measured

0.0″

model

exact

model confidence: high

Snowbird snow stake, measured 4.0 inches

≈4″ conditions · 2026-02-20 training image

4.0″

measured

3.0″

model

-1.0″

model confidence: medium

Snowbird snow stake, measured 8.0 inches

≈8″ conditions · 2026-04-01 training image

8.0″

measured

10.0″

model

+2.0″

model confidence: medium

Snowbird snow stake, measured 14.0 inches

≈12″ conditions · 2026-03-06 training image

14.0″

measured

13.5″

model

-0.5″

model confidence: medium

Snowmass

2 labeled samples · MAE 3.0″ · bias -3.0″

≈0″ conditions · 2026-02-23

0.0″

measured

0.0″

model

exact

model confidence: medium · reading is a 24-h total stake

Snowmass snow stake, measured 6.0 inches

≈4″ conditions · 2026-04-27

6.0″

measured

0.0″

model

-6.0″

model confidence: high · reading is a 24-h total stake

Steamboat

3 labeled samples · MAE 1.5″ · bias 0.8″

≈0″ conditions · 2026-05-20 training image

0.0″

measured

1.5″

model

+1.5″

model confidence: medium

Steamboat snow stake, measured 4.0 inches

≈4″ conditions · 2026-01-02 training image

4.0″

measured

6.0″

model

+2.0″

model confidence: medium

Steamboat snow stake, measured 7.0 inches

≈8″ conditions · 2026-03-06 training image

7.0″

measured

6.0″

model

-1.0″

model confidence: medium

Sundance

2 labeled samples · MAE 0.5″ · bias -0.5″

≈0″ conditions · 2026-05-20 training image

0.0″

measured

0.0″

model

exact

model confidence: high

Sundance snow stake, measured 4.0 inches

≈4″ conditions · 2026-01-02 training image

4.0″

measured

3.0″

model

-1.0″

model confidence: medium

Sunlight

2 labeled samples · MAE 2.0″ · bias -2.0″

≈0″ conditions · 2026-05-01 training image

0.0″

measured

0.0″

model

exact

model confidence: high · reading is a 24-h total stake

Sunlight snow stake, measured 4.0 inches

≈4″ conditions · 2025-12-15 training image

4.0″

measured

0.0″

model

-4.0″

model confidence: high · reading is a 24-h total stake

Whitefish

3 labeled samples · MAE 1.7″ · bias 1.0″

≈0″ conditions · 2026-02-01 training image

0.0″

measured

3.0″

model

+3.0″

model confidence: medium

Whitefish snow stake, measured 2.0 inches

≈4″ conditions · 2026-01-02 training image

2.0″

measured

3.0″

model

+1.0″

model confidence: medium

Whitefish snow stake, measured 6.0 inches

≈8″ conditions · 2025-12-01 training image

6.0″

measured

5.0″

model

-1.0″

model confidence: medium

Winter Park

4 labeled samples · MAE 0.4″ · bias -0.1″

≈0″ conditions · 2026-04-08

0.0″

measured

0.0″

model

exact

model confidence: high

Winter Park snow stake, measured 3.5 inches

≈4″ conditions · 2026-03-07

3.5″

measured

4.0″

model

+0.5″

model confidence: medium

Winter Park snow stake, measured 8.0 inches

≈8″ conditions · 2026-04-28 training image

8.0″

measured

7.0″

model

-1.0″

model confidence: medium

Winter Park snow stake, measured 10.0 inches

≈12″ conditions · 2026-05-02 training image

10.0″

measured

10.0″

model

exact

model confidence: medium

Ground truth is a human reading of the stake in each image. Samples badged “training image” were part of the model’s fine-tuning data, so treat those as illustrations rather than proof — the honest benchmark is the held-out test set quoted above, whose error is essentially identical to this demo’s. Model: Qwen2.5-VL-7B with a LoRA fine-tune, run run_20260518_145633. Generated 2026-08-04 15:39 UTC.

How accurate is the snow-depth model?

Model reading vs. measured truth

Per-resort summary

A-Basin

Alta

Aspen Highlands

Aspen Mountain

Beaver Creek

Breckenridge

Brian Head

Buttermilk

Copper

Deer Valley

Discovery

Eldora

Grand Targhee

Keystone

Loveland

Monarch

Northstar

Park City

Powder Mountain

Powderhorn

Snowbird

Snowmass

Steamboat

Sundance

Sunlight

Whitefish

Winter Park