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PeakCam

14-day multi-model blend · 9 models

Snowy Range Ski Area snow forecast

As of the 2026-11-04 runs: 0″ in the next 7 days and 1.9″ over 14 at the summit, the biggest day 0.7″, the median of 9 models.

Snowy Range · Wyoming

Summit blend, next 14 days

Summit point at 9,663 ft · issued · 9 models: ECMWF IFS 0.25°, GEM, HRRR, GFS, ICON, JMA, ARPEGE/AROME, NBM (CONUS), UKMO.

Next 48 h
0″
Next 7 days
0″
Next 14 days
1.9″
Biggest day
0.7″ on Tue, Nov 17
DaySkySnow (median)Low – highHigh / lowPrecipGustModels
––36° / 23°1%13 mph9
––43° / 23°0%12 mph9
–0″ – 0.3″38° / 25°11%14 mph8
––43° / 24°0%16 mph8
––48° / 27°0%26 mph7
––49° / 31°0%25 mph7
––45° / 31°0%27 mph6
––44° / 27°4%24 mph5
––42° / 27°8%30 mph5
––42° / 28°7%32 mph5
✳✳✳0.3″0″ – 0.9″41° / 31°16%27 mph4
✳✳✳0.6″0.3″ – 0.9″45° / 23°21%26 mph2
0.3″0.2″ – 0.5″34° / 19°33%28 mph2
✳✳✳0.7″0.3″ – 1″30° / 17°31%37 mph2
Every model at the summit (9 runs) — snowfall in inches per day
ModelIssuedHorizon11-0411-0511-0611-0711-0811-0911-1011-1111-1211-1311-1411-1511-1611-17
ECMWF IFS 0.25°ECMWF14 d00000000002.21.20.71.3
GEMEnvironment Canada10 d001.80000000––––
HRRRNOAA NCEP2 d00––––––––––––
GFSNOAA NCEP14 d00000000000000
ICONDWD7 d0000000–––––––
JMAJapan Meteorological Agency11 d000.100000000–––
ARPEGE/AROMEMétéo-France4 d0000––––––––––
NBM (CONUS)NOAA NCEP11 d000.8000000.30.20.5–––
UKMOUK Met Office6 d000000––––––––

A dash means the model does not reach that day. Runs are the newest per model within 36 hours.

Base blend, next 14 days

Base point at 8,798 ft · issued · 9 models: ECMWF IFS 0.25°, GEM, HRRR, GFS, ICON, JMA, ARPEGE/AROME, NBM (CONUS), UKMO.

Next 48 h
0″
Next 7 days
0″
Next 14 days
1.7″
Biggest day
0.7″ on Tue, Nov 17
DaySkySnow (median)Low – highHigh / lowPrecipGustModels
––40° / 26°1%12 mph9
––46° / 27°0%11 mph9
–0″ – 0.1″42° / 28°11%13 mph8
––47° / 26°0%14 mph8
––52° / 30°0%25 mph7
––53° / 34°0%25 mph7
––49° / 34°0%27 mph6
––48° / 30°4%24 mph5
––45° / 30°8%29 mph5
––46° / 32°6%31 mph5
✳✳✳0.2″0″ – 0.9″45° / 34°15%25 mph4
✳✳✳0.5″0.2″ – 0.7″48° / 26°21%26 mph2
0.3″0.2″ – 0.5″37° / 22°33%28 mph2
✳✳✳0.7″0.3″ – 1″33° / 20°31%37 mph2
Every model at the base (9 runs) — snowfall in inches per day
ModelIssuedHorizon11-0411-0511-0611-0711-0811-0911-1011-1111-1211-1311-1411-1511-1611-17
ECMWF IFS 0.25°ECMWF14 d00000000002.20.90.71.3
GEMEnvironment Canada10 d000.30000000––––
HRRRNOAA NCEP2 d00––––––––––––
GFSNOAA NCEP14 d00000000000000
ICONDWD7 d0000000–––––––
JMAJapan Meteorological Agency11 d00000000000–––
ARPEGE/AROMEMétéo-France4 d0000––––––––––
NBM (CONUS)NOAA NCEP11 d000.6000000.30.10.4–––
UKMOUK Met Office6 d000000––––––––

A dash means the model does not reach that day. Runs are the newest per model within 36 hours.

How the models have verified here

Truth: 24 h depth change at Brooklyn Lake (10,250 ft) · 68 measured days in the last 90 · graded at the summit point · scored .

#ModelDay-1 MAEDay-3 MAEDay-7 MAEBiasSamples
1GFS0 cm0 cm0 cm–1
2UKMO0 cm0 cm– cm–1
3ARPEGE/AROME0 cm0.1 cm– cm–1
4PeakCam blend0 cm0.1 cm0.3 cm–1
5GEM0 cm0.1 cm0.3 cm–1
6NBM (CONUS)0 cm0.4 cm5.4 cm–1
7HRRR0 cm– cm– cm–1
8ICON0.2 cm0 cm– cm–1
9ECMWF IFS 0.25°0.2 cm0.4 cm4 cm–1
10JMA0.6 cm0.8 cm0.2 cm–1

For every day in the window with a measured value, the forecast for that day from each model's newest run issued 1, 3 and 7 days earlier is compared with the measured 24 h new snow (SNOTEL depth change clipped at zero, so settlement makes the measured value a floor). MAE is in cm; bias ratio is total forecast over total measured; the blend is graded by the same rule.

How to read this page

Per day, the median snowfall across the models that reach that day (ECMWF IFS, GFS, GEM, ICON, JMA, Météo-France, UKMO, plus NBM and HRRR for US points), fetched every 6 hours from Open-Meteo at the resort's summit and base elevations; the low/high band is the 25th/75th percentile across models, so a wide band means the models disagree.

The verification table grades each model's newest run issued 1, 3 and 7 days before each measured day against the station's 24 h depth change; a lower mean absolute error is better and a bias above 1 means the model forecast more snow than fell. How the blend is built and verified.

Weather data by Open-Meteo.com (CC BY 4.0). Updated every 6 hours.