Each colour starts at the value shown. Wind colours match across all three units. Dry cells stay neutral. Colours describe the displayed values, not official weather warnings.
ECMWF IFS · Run 2026-10-09 18:00:00 UTC · 6 days · Times: UTC.
Coordinates: 36.99084°N, 138.1802028°E · Requested elevation: 338 m. Model terrain: 496 m. Terrain and 1000/925/850/700 hPa profiles are used for height estimates.
Outside the available profile, temperature uses an estimated 5.5°C/km height correction; wind retains the nearest available model-level value. Humidity is estimated with adjusted pressure and temperature.
These are altitude estimates, not a simulation of local mountain terrain. Precipitation, cloud and sea-level pressure use horizontal interpolation only.
Precipitation includes rain and snow water equivalent: preceding 3 hours through day 6, then 6 hours (see cell tooltip). Snow (cm) estimates fresh snowfall from precipitation and temperature using the GFS conversion; it is not snow depth on the ground. Freezing (m) estimates the lowest resolved 0°C crossing above sea level. When all sampled levels are warm, the upper profile limit is shown (see tooltip). < marks an entirely cold sampled profile and its lower height limit. No extrapolation is used.
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Friday, 09/10 18:00 14.7 76 6 3 1B S — — 1023 3186 Clear 1% cloud 21:00 14.6 69 6 3 1B S 0 0 1023 3183 Clear 2% cloud Saturday, 10/10 00:00 20.9 60 3 1 1B SE 0 0 1023 3186 Clear 2% cloud 03:00 22.9 55 6 3 2B N 0 0 1021 3178 Clear 14% cloud 06:00 21.3 66 7 4 2B N 0 0 1020 3172 Clear 10% cloud 09:00 16.6 86 1 1 1B S 0 0 1021 3175 Clear 9% cloud 12:00 14.9 86 4 2 1B S 0 0 1021 3178 Clear 11% cloud 15:00 14.6 80 4 2 1B S 0 0 1021 3172 Clear 15% cloud 18:00 13.7 80 3 2 1B S 0 0 1021 3164 Clear 8% cloud 21:00 13.3 77 4 2 1B S 0.00 0 1021 3165 Clear 5% cloud Sunday, 11/10 00:00 20.6 58 0 0 0B SW 0 0 1022 3175 Clear 1% cloud 03:00 22.1 59 9 5 2B N 0 0 1021 3170 Clear 0% cloud 06:00 20.7 69 7 4 2B N 0 0 1020 3162 Clear 13% cloud 09:00 15.9 89 1 1 0B W 0 0 1021 3166 Clear 20% cloud 12:00 13.7 91 2 1 1B S 0 0 1021 3168 Partly cloudy 33% cloud 15:00 12.7 83 3 2 1B S 0 0 1020 3163 Clear 12% cloud 18:00 13.5 77 2 1 1B S 0.00 0 1020 3158 Partly cloudy 21% cloud 21:00 13.2 77 2 1 1B S 0.00 0 1021 3162 Clear 13% cloud Monday, 12/10 00:00 18.8 71 3 2 1B NE 0 0 1021 3170 Partly cloudy 45% cloud 03:00 20.4 69 8 4 2B N 0.00 0 1020 3162 Overcast 85% cloud 06:00 18.5 76 5 3 1B N 0.00 0 1020 3156 Partly cloudy 25% cloud 09:00 15.5 89 1 1 1B SW 0.00 0 1020 3159 Clear 14% cloud 12:00 14 92 2 1 1B S 0 0 1020 3162 Partly cloudy 30% cloud 15:00 14 87 3 1 1B SW 0 0 1019 3155 Partly cloudy 23% cloud 18:00 14.4 83 2 1 1B S 0 0 1019 3145 Clear 16% cloud 21:00 14.3 83 3 2 1B S 0 0 1019 3144 Clear 17% cloud Tuesday, 13/10 00:00 20.6 71 1 1 0B E 0 0 1018 3144 Clear 6% cloud 03:00 21.9 69 8 4 2B N 0.03 0 1016 3131 Partly cloudy 45% cloud 06:00 20.3 73 6 3 2B N 0.07 0 1015 3121 Clear 19% cloud 09:00 17.1 89 2 1 1B S 0.19 0 1015 3116 Partly cloudy 40% cloud 12:00 16.1 87 7 4 2B S 0.03 0 1012 3109 Clear 4% cloud 15:00 16.8 80 12 6 2B S 0 0 1010 3094 Partly cloudy 42% cloud 18:00 16.6 81 14 7 3B S 0.62 0 1008 3076 Overcast 83% cloud 21:00 15.8 90 8 4 2B S 1.3 0 1008 3066 Overcast 84% cloud Wednesday, 14/10 00:00 18.1 94 3 2 1B N 3.9 0 1009 3064 Overcast 99% cloud 03:00 18.7 92 3 2 1B NW 9.1 0 1008 3052 Cloudy 74% cloud 06:00 17.6 83 13 7 3B NW 1.6 0 1009 3044 Cloudy 73% cloud 09:00 13.9 94 8 4 2B NW 3.3 0 1013 2858 Overcast 86% cloud 12:00 12.1 93 3 2 1B NW 1.8 0 1016 2615 Overcast 91% cloud 15:00 11 94 2 1 1B S 1.1 0 1017 2949 Partly cloudy 44% cloud 18:00 10.6 92 2 1 1B S 0.21 0 1018 3061 Cloudy 71% cloud 21:00 10.9 91 2 1 1B SW 0.32 0 1020 3074 Partly cloudy 46% cloud Thursday, 15/10 00:00 14.4 70 6 3 2B NW 0.09 0 1021 3093 Cloudy 65% cloud 03:00 16.4 55 8 4 2B N 0.03 0 1020 3098 Overcast 81% cloud 06:00 15.6 52 8 4 2B N 0 0 1021 3103 Clear 18% cloud 09:00 11.5 71 2 1 1B S 0 0 1022 3117 Clear 2% cloud 12:00 9.7 75 3 2 1B S 0 0 1023 3127 Clear 6% cloud 15:00 9.8 72 2 1 1B S 0 0 1023 3132 Clear 3% cloud 18:00 9.7 73 3 2 1B S 0 0 1023 3133 Clear 3% cloud |
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Source: ECMWF · CC BY 4.0 · Processed by Snow Report.
ARAI SNOW RESORT is a downhill ski area in Niigata Prefecture, Japan. Mapped terrain includes easy, intermediate, advanced routes. Its mapped lift network extends from approximately 338 to 1278 metres above sea level.
Data: OpenSkiData / OpenSkiMap, OpenStreetMap contributors (ODbL), Skimap.org, Who's On First, Mapterhorn.
ECMWF IFS · Run 2026-10-09 18:00:00 UTC · 6 days · Times: UTC.
Coordinates: 36.99084°N, 138.1802028°E · Requested elevation: 338 m. Model terrain: 496 m. Terrain and 1000/925/850/700 hPa profiles are used for height estimates.
Outside the available profile, temperature uses an estimated 5.5°C/km height correction; wind retains the nearest available model-level value. Humidity is estimated with adjusted pressure and temperature.
These are altitude estimates, not a simulation of local mountain terrain. Precipitation, cloud and sea-level pressure use horizontal interpolation only.
Precipitation includes rain and snow water equivalent: preceding 3 hours through day 6, then 6 hours (see cell tooltip). Snow (cm) estimates fresh snowfall from precipitation and temperature using the GFS conversion; it is not snow depth on the ground. Freezing (m) estimates the lowest resolved 0°C crossing above sea level. When all sampled levels are warm, the upper profile limit is shown (see tooltip). < marks an entirely cold sampled profile and its lower height limit. No extrapolation is used.
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Friday, 09/10 18:00 14.7 76 6 3 1B S — — 1023 3186 Clear 1% cloud 21:00 14.6 69 6 3 1B S 0 0 1023 3183 Clear 2% cloud Saturday, 10/10 00:00 20.9 60 3 1 1B SE 0 0 1023 3186 Clear 2% cloud 03:00 22.9 55 6 3 2B N 0 0 1021 3178 Clear 14% cloud 06:00 21.3 66 7 4 2B N 0 0 1020 3172 Clear 10% cloud 09:00 16.6 86 1 1 1B S 0 0 1021 3175 Clear 9% cloud 12:00 14.9 86 4 2 1B S 0 0 1021 3178 Clear 11% cloud 15:00 14.6 80 4 2 1B S 0 0 1021 3172 Clear 15% cloud 18:00 13.7 80 3 2 1B S 0 0 1021 3164 Clear 8% cloud 21:00 13.3 77 4 2 1B S 0.00 0 1021 3165 Clear 5% cloud Sunday, 11/10 00:00 20.6 58 0 0 0B SW 0 0 1022 3175 Clear 1% cloud 03:00 22.1 59 9 5 2B N 0 0 1021 3170 Clear 0% cloud 06:00 20.7 69 7 4 2B N 0 0 1020 3162 Clear 13% cloud 09:00 15.9 89 1 1 0B W 0 0 1021 3166 Clear 20% cloud 12:00 13.7 91 2 1 1B S 0 0 1021 3168 Partly cloudy 33% cloud 15:00 12.7 83 3 2 1B S 0 0 1020 3163 Clear 12% cloud 18:00 13.5 77 2 1 1B S 0.00 0 1020 3158 Partly cloudy 21% cloud 21:00 13.2 77 2 1 1B S 0.00 0 1021 3162 Clear 13% cloud Monday, 12/10 00:00 18.8 71 3 2 1B NE 0 0 1021 3170 Partly cloudy 45% cloud 03:00 20.4 69 8 4 2B N 0.00 0 1020 3162 Overcast 85% cloud 06:00 18.5 76 5 3 1B N 0.00 0 1020 3156 Partly cloudy 25% cloud 09:00 15.5 89 1 1 1B SW 0.00 0 1020 3159 Clear 14% cloud 12:00 14 92 2 1 1B S 0 0 1020 3162 Partly cloudy 30% cloud 15:00 14 87 3 1 1B SW 0 0 1019 3155 Partly cloudy 23% cloud 18:00 14.4 83 2 1 1B S 0 0 1019 3145 Clear 16% cloud 21:00 14.3 83 3 2 1B S 0 0 1019 3144 Clear 17% cloud Tuesday, 13/10 00:00 20.6 71 1 1 0B E 0 0 1018 3144 Clear 6% cloud 03:00 21.9 69 8 4 2B N 0.03 0 1016 3131 Partly cloudy 45% cloud 06:00 20.3 73 6 3 2B N 0.07 0 1015 3121 Clear 19% cloud 09:00 17.1 89 2 1 1B S 0.19 0 1015 3116 Partly cloudy 40% cloud 12:00 16.1 87 7 4 2B S 0.03 0 1012 3109 Clear 4% cloud 15:00 16.8 80 12 6 2B S 0 0 1010 3094 Partly cloudy 42% cloud 18:00 16.6 81 14 7 3B S 0.62 0 1008 3076 Overcast 83% cloud 21:00 15.8 90 8 4 2B S 1.3 0 1008 3066 Overcast 84% cloud Wednesday, 14/10 00:00 18.1 94 3 2 1B N 3.9 0 1009 3064 Overcast 99% cloud 03:00 18.7 92 3 2 1B NW 9.1 0 1008 3052 Cloudy 74% cloud 06:00 17.6 83 13 7 3B NW 1.6 0 1009 3044 Cloudy 73% cloud 09:00 13.9 94 8 4 2B NW 3.3 0 1013 2858 Overcast 86% cloud 12:00 12.1 93 3 2 1B NW 1.8 0 1016 2615 Overcast 91% cloud 15:00 11 94 2 1 1B S 1.1 0 1017 2949 Partly cloudy 44% cloud 18:00 10.6 92 2 1 1B S 0.21 0 1018 3061 Cloudy 71% cloud 21:00 10.9 91 2 1 1B SW 0.32 0 1020 3074 Partly cloudy 46% cloud Thursday, 15/10 00:00 14.4 70 6 3 2B NW 0.09 0 1021 3093 Cloudy 65% cloud 03:00 16.4 55 8 4 2B N 0.03 0 1020 3098 Overcast 81% cloud 06:00 15.6 52 8 4 2B N 0 0 1021 3103 Clear 18% cloud 09:00 11.5 71 2 1 1B S 0 0 1022 3117 Clear 2% cloud 12:00 9.7 75 3 2 1B S 0 0 1023 3127 Clear 6% cloud 15:00 9.8 72 2 1 1B S 0 0 1023 3132 Clear 3% cloud 18:00 9.7 73 3 2 1B S 0 0 1023 3133 Clear 3% cloud |
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Source: ECMWF · CC BY 4.0 · Processed by Snow Report.
ECMWF IFS · Run 2026-10-09 18:00:00 UTC · 6 days · Times: UTC.
Coordinates: 36.9931898°N, 138.1385816°E · Requested elevation: 1278 m. Model terrain: 526 m. Terrain and 1000/925/850/700 hPa profiles are used for height estimates.
These are altitude estimates, not a simulation of local mountain terrain. Precipitation, cloud and sea-level pressure use horizontal interpolation only.
Precipitation includes rain and snow water equivalent: preceding 3 hours through day 6, then 6 hours (see cell tooltip). Snow (cm) estimates fresh snowfall from precipitation and temperature using the GFS conversion; it is not snow depth on the ground. Freezing (m) estimates the lowest resolved 0°C crossing above sea level. When all sampled levels are warm, the upper profile limit is shown (see tooltip). < marks an entirely cold sampled profile and its lower height limit. No extrapolation is used.
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Friday, 09/10 18:00 13.7 58 3 2 1B W — — 1023 3186 Clear 1% cloud 21:00 12.7 65 2 1 1B NW 0 0 1023 3183 Clear 1% cloud Saturday, 10/10 00:00 14.4 62 3 2 1B S 0 0 1023 3186 Clear 1% cloud 03:00 15.3 67 4 2 1B S 0 0 1021 3178 Clear 17% cloud 06:00 15.2 76 3 2 1B NW 0 0 1021 3172 Clear 12% cloud 09:00 13.5 78 1 1 1B NW 0 0 1021 3175 Clear 8% cloud 12:00 13.5 71 2 1 1B S 0 0 1021 3178 Clear 12% cloud 15:00 13.6 61 3 2 1B NW 0 0 1021 3172 Clear 13% cloud 18:00 12.4 71 6 3 2B N 0 0 1021 3164 Clear 6% cloud 21:00 11.8 60 10 6 2B N 0.00 0 1021 3165 Clear 4% cloud Sunday, 11/10 00:00 14.1 56 10 5 2B N 0 0 1022 3175 Clear 0% cloud 03:00 14.3 66 11 6 2B N 0 0 1021 3170 Clear 0% cloud 06:00 14.4 64 9 5 2B N 0 0 1020 3162 Clear 19% cloud 09:00 13.2 61 4 2 1B N 0 0 1021 3166 Partly cloudy 26% cloud 12:00 12.9 54 2 1 1B W 0 0 1021 3168 Partly cloudy 40% cloud 15:00 13 51 3 2 1B S 0 0 1020 3163 Clear 12% cloud 18:00 12.7 62 5 3 1B SW 0.00 0 1020 3158 Clear 16% cloud 21:00 12.3 62 5 3 1B W 0.00 0 1021 3161 Clear 10% cloud Monday, 12/10 00:00 14.5 59 3 1 1B SW 0 0 1021 3170 Partly cloudy 46% cloud 03:00 14.7 68 2 1 1B SW 0.01 0 1020 3162 Overcast 86% cloud 06:00 14.2 80 0 0 0B — 0.01 0 1020 3156 Partly cloudy 31% cloud 09:00 13.5 83 3 2 1B SE 0.01 0 1020 3159 Clear 18% cloud 12:00 13.1 85 10 5 2B S 0 0 1020 3162 Partly cloudy 32% cloud 15:00 13.2 80 11 6 2B SW 0 0 1019 3154 Partly cloudy 22% cloud 18:00 12.7 84 9 5 2B SW 0 0 1019 3145 Clear 14% cloud 21:00 12.6 84 7 4 2B S 0 0 1019 3144 Clear 14% cloud Tuesday, 13/10 00:00 14.3 77 10 6 2B S 0 0 1018 3144 Clear 6% cloud 03:00 15 81 7 4 2B SW 0.03 0 1016 3131 Partly cloudy 49% cloud 06:00 14.9 82 5 3 1B S 0.09 0 1015 3121 Clear 19% cloud 09:00 14 88 9 5 2B S 0.16 0 1015 3116 Partly cloudy 42% cloud 12:00 14.1 73 19 10 3B S 0.02 0 1012 3109 Clear 4% cloud 15:00 14.8 59 21 11 4B SW 0 0 1010 3093 Partly cloudy 43% cloud 18:00 14.5 66 28 15 4B SW 0.57 0 1008 3075 Overcast 80% cloud 21:00 14 78 30 16 5B SW 1.3 0 1008 3066 Overcast 83% cloud Wednesday, 14/10 00:00 13 93 24 13 4B SW 4.5 0 1009 3064 Overcast 99% cloud 03:00 13.1 74 35 19 5B W 9.1 0 1008 3051 Cloudy 70% cloud 06:00 12 80 41 22 6B W 1.5 0 1009 3043 Cloudy 74% cloud 09:00 8.7 90 37 20 5B W 3.8 0 1014 2838 Overcast 86% cloud 12:00 6.9 95 30 16 5B NW 2.0 0 1016 2622 Overcast 89% cloud 15:00 5.8 91 24 13 4B NW 1.1 0 1018 2961 Partly cloudy 49% cloud 18:00 5.1 96 19 11 3B NW 0.25 0 1018 3061 Cloudy 71% cloud 21:00 4.8 94 17 9 3B NW 0.40 0 1020 3074 Cloudy 52% cloud Thursday, 15/10 00:00 5.9 89 9 5 2B NW 0.08 0 1021 3093 Cloudy 69% cloud 03:00 7.6 79 6 3 1B NW 0.03 0 1020 3098 Cloudy 76% cloud 06:00 8 73 10 5 2B W 0 0 1021 3103 Partly cloudy 22% cloud 09:00 7.2 65 11 6 2B W 0 0 1022 3117 Clear 2% cloud 12:00 7.4 70 9 5 2B SW 0 0 1023 3127 Clear 6% cloud 15:00 7.6 71 9 5 2B S 0 0 1023 3132 Clear 3% cloud 18:00 7.8 68 9 5 2B SW 0 0 1023 3133 Clear 2% cloud |
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