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 · Model run: Next update expected:
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Thursday, 05/11 06:00 18.5 66 4 2 1B NW — — 1010 3047 Partly cloudy 37% cloud 09:00 15.5 79 4 2 1B S 0.06 0 1009 3040 Overcast 96% cloud 12:00 15.2 78 3 1 1B SE 0.41 0 1007 3024 Cloudy 70% cloud 15:00 15.2 77 1 1 1B S 0.19 0 1006 3011 Cloudy 79% cloud 18:00 14.7 82 6 3 2B W 3.3 0 1006 2997 Overcast 94% cloud 21:00 14.1 86 14 7 3B W 9.5 0 1008 2808 Overcast 99% cloud Friday, 06/11 00:00 15.5 79 17 9 3B W 3.2 0 1010 2764 Partly cloudy 35% cloud 03:00 17.5 53 22 12 4B W 0.33 0 1009 2730 Cloudy 63% cloud 06:00 14.5 72 21 11 4B W 1.7 0 1012 2570 Cloudy 72% cloud 09:00 11.9 76 18 10 3B W 1.2 0 1015 2306 Cloudy 71% cloud 12:00 10 83 15 8 3B W 3.0 0 1018 1957 Overcast 97% cloud 15:00 8.4 83 13 7 3B W 8.0 0 1019 1637 Overcast 100% cloud 18:00 7.6 83 15 8 3B W 6.0 0 1019 1493 Overcast 90% cloud 21:00 7.3 80 18 10 3B SW 1.8 0 1020 1444 Overcast 94% cloud Saturday, 07/11 00:00 7.3 80 17 9 3B W 5.8 0 1024 1397 Overcast 100% cloud 03:00 7.4 75 18 10 3B W 6.7 0 1025 1405 Overcast 87% cloud 06:00 7 74 17 9 3B W 6.3 0 1026 1361 Cloudy 79% cloud 09:00 5.9 79 14 7 3B W 3.8 0 1029 1268 Overcast 85% cloud 12:00 5.2 79 11 6 2B SW 1.4 0 1031 1296 Cloudy 72% cloud 15:00 5.4 75 12 7 2B W 0.25 0 1032 1443 Overcast 90% cloud 18:00 5.6 77 11 6 2B W 0.59 0 1033 1598 Overcast 94% cloud 21:00 5.7 76 7 4 2B W 0.74 0 1034 1808 Overcast 96% cloud Sunday, 08/11 00:00 7.4 67 5 3 1B W 0.35 0 1035 2281 Overcast 87% cloud 03:00 9.6 54 7 4 2B NW 0 0 1033 2510 Overcast 86% cloud 06:00 9 56 5 3 1B N 0.06 0 1032 2517 Overcast 81% cloud 09:00 6.8 69 4 2 1B E 0 0 1032 2105 Overcast 98% cloud 12:00 6.4 69 6 3 2B SE 0 0 1032 1851 Overcast 91% cloud 15:00 6.2 70 3 2 1B SE 0 0 1029 1766 Overcast 98% cloud 18:00 6.7 68 4 2 1B SE 0.10 0 1028 1791 Overcast 100% cloud 21:00 7.3 74 4 2 1B SE 0.32 0 1026 1817 Overcast 99% cloud Monday, 09/11 00:00 10.7 71 2 1 1B SW 0.22 0 1024 2136 Cloudy 74% cloud 03:00 13.4 59 8 4 2B W 0 0 1022 2283 Partly cloudy 27% cloud 06:00 13.5 60 9 5 2B W 0 0 1021 2252 Cloudy 75% cloud 09:00 10.4 82 12 7 2B NW 2.2 0 1022 2114 Overcast 95% cloud 12:00 8.3 83 11 6 2B N 11.8 0 1025 1768 Overcast 100% cloud 15:00 7.4 79 8 4 2B NW 3.9 0 1025 1528 Overcast 99% cloud 18:00 6.3 78 7 4 2B NW 1.5 0 1026 1405 Overcast 96% cloud 21:00 5.6 78 6 3 2B W 0.87 0 1026 1327 Cloudy 75% cloud Tuesday, 10/11 00:00 5.9 76 7 4 2B W 1.2 0 1028 1351 Overcast 84% cloud 03:00 6.5 75 12 6 2B NW 3.2 0 1027 1436 Overcast 94% cloud 06:00 5.6 79 7 4 2B NW 2.7 0 1027 1442 Overcast 92% cloud 09:00 4.8 80 3 2 1B NW 0.63 0 1028 1338 Overcast 96% cloud 12:00 4 78 2 1 1B W 0.03 0 1028 1150 Overcast 93% cloud 15:00 3.2 85 4 2 1B S 0.11 0 1028 919 Overcast 85% cloud 18:00 2.8 80 5 3 1B S 0 0 1028 798 Cloudy 76% cloud 21:00 2.5 78 6 3 2B S 0 0 1029 701 Cloudy 69% cloud Wednesday, 11/11 00:00 7.7 58 5 3 1B W 0 0 1031 1672 Cloudy 70% cloud 03:00 10.1 51 7 4 2B NW 0 0 1029 1930 Clear 11% cloud 06:00 9.9 53 6 3 2B N 0 0 1030 2005 Clear 1% cloud |
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Forecast table times: UTC.
Coordinates: 36.9404607°N, 137.8991972°E · Requested elevation: 244 m. Model terrain: 679 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) uses additional 600/500 hPa temperatures when available and 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.
Source: ECMWF · CC BY 4.0 · Processed by Snow Report.

Itoigawa Seaside Valley Ski Resort is a downhill ski area in Niigata Prefecture, Japan. Mapped terrain includes easy, intermediate, advanced routes. Its mapped lift network extends from approximately 244 to 734 metres above sea level.
Data: OpenSkiData / OpenSkiMap, OpenStreetMap contributors (ODbL), Skimap.org, Who's On First, Mapterhorn.
ECMWF · Model run: Next update expected:
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Thursday, 05/11 06:00 18.5 66 4 2 1B NW — — 1010 3047 Partly cloudy 37% cloud 09:00 15.5 79 4 2 1B S 0.06 0 1009 3040 Overcast 96% cloud 12:00 15.2 78 3 1 1B SE 0.41 0 1007 3024 Cloudy 70% cloud 15:00 15.2 77 1 1 1B S 0.19 0 1006 3011 Cloudy 79% cloud 18:00 14.7 82 6 3 2B W 3.3 0 1006 2997 Overcast 94% cloud 21:00 14.1 86 14 7 3B W 9.5 0 1008 2808 Overcast 99% cloud Friday, 06/11 00:00 15.5 79 17 9 3B W 3.2 0 1010 2764 Partly cloudy 35% cloud 03:00 17.5 53 22 12 4B W 0.33 0 1009 2730 Cloudy 63% cloud 06:00 14.5 72 21 11 4B W 1.7 0 1012 2570 Cloudy 72% cloud 09:00 11.9 76 18 10 3B W 1.2 0 1015 2306 Cloudy 71% cloud 12:00 10 83 15 8 3B W 3.0 0 1018 1957 Overcast 97% cloud 15:00 8.4 83 13 7 3B W 8.0 0 1019 1637 Overcast 100% cloud 18:00 7.6 83 15 8 3B W 6.0 0 1019 1493 Overcast 90% cloud 21:00 7.3 80 18 10 3B SW 1.8 0 1020 1444 Overcast 94% cloud Saturday, 07/11 00:00 7.3 80 17 9 3B W 5.8 0 1024 1397 Overcast 100% cloud 03:00 7.4 75 18 10 3B W 6.7 0 1025 1405 Overcast 87% cloud 06:00 7 74 17 9 3B W 6.3 0 1026 1361 Cloudy 79% cloud 09:00 5.9 79 14 7 3B W 3.8 0 1029 1268 Overcast 85% cloud 12:00 5.2 79 11 6 2B SW 1.4 0 1031 1296 Cloudy 72% cloud 15:00 5.4 75 12 7 2B W 0.25 0 1032 1443 Overcast 90% cloud 18:00 5.6 77 11 6 2B W 0.59 0 1033 1598 Overcast 94% cloud 21:00 5.7 76 7 4 2B W 0.74 0 1034 1808 Overcast 96% cloud Sunday, 08/11 00:00 7.4 67 5 3 1B W 0.35 0 1035 2281 Overcast 87% cloud 03:00 9.6 54 7 4 2B NW 0 0 1033 2510 Overcast 86% cloud 06:00 9 56 5 3 1B N 0.06 0 1032 2517 Overcast 81% cloud 09:00 6.8 69 4 2 1B E 0 0 1032 2105 Overcast 98% cloud 12:00 6.4 69 6 3 2B SE 0 0 1032 1851 Overcast 91% cloud 15:00 6.2 70 3 2 1B SE 0 0 1029 1766 Overcast 98% cloud 18:00 6.7 68 4 2 1B SE 0.10 0 1028 1791 Overcast 100% cloud 21:00 7.3 74 4 2 1B SE 0.32 0 1026 1817 Overcast 99% cloud Monday, 09/11 00:00 10.7 71 2 1 1B SW 0.22 0 1024 2136 Cloudy 74% cloud 03:00 13.4 59 8 4 2B W 0 0 1022 2283 Partly cloudy 27% cloud 06:00 13.5 60 9 5 2B W 0 0 1021 2252 Cloudy 75% cloud 09:00 10.4 82 12 7 2B NW 2.2 0 1022 2114 Overcast 95% cloud 12:00 8.3 83 11 6 2B N 11.8 0 1025 1768 Overcast 100% cloud 15:00 7.4 79 8 4 2B NW 3.9 0 1025 1528 Overcast 99% cloud 18:00 6.3 78 7 4 2B NW 1.5 0 1026 1405 Overcast 96% cloud 21:00 5.6 78 6 3 2B W 0.87 0 1026 1327 Cloudy 75% cloud Tuesday, 10/11 00:00 5.9 76 7 4 2B W 1.2 0 1028 1351 Overcast 84% cloud 03:00 6.5 75 12 6 2B NW 3.2 0 1027 1436 Overcast 94% cloud 06:00 5.6 79 7 4 2B NW 2.7 0 1027 1442 Overcast 92% cloud 09:00 4.8 80 3 2 1B NW 0.63 0 1028 1338 Overcast 96% cloud 12:00 4 78 2 1 1B W 0.03 0 1028 1150 Overcast 93% cloud 15:00 3.2 85 4 2 1B S 0.11 0 1028 919 Overcast 85% cloud 18:00 2.8 80 5 3 1B S 0 0 1028 798 Cloudy 76% cloud 21:00 2.5 78 6 3 2B S 0 0 1029 701 Cloudy 69% cloud Wednesday, 11/11 00:00 7.7 58 5 3 1B W 0 0 1031 1672 Cloudy 70% cloud 03:00 10.1 51 7 4 2B NW 0 0 1029 1930 Clear 11% cloud 06:00 9.9 53 6 3 2B N 0 0 1030 2005 Clear 1% cloud |
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Forecast table times: UTC.
Coordinates: 36.9404607°N, 137.8991972°E · Requested elevation: 244 m. Model terrain: 679 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) uses additional 600/500 hPa temperatures when available and 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.
Source: ECMWF · CC BY 4.0 · Processed by Snow Report.
ECMWF · Model run: Next update expected:
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Thursday, 05/11 06:00 15.9 73 4 2 1B W — — 1010 3048 Partly cloudy 38% cloud 09:00 12.9 87 4 2 1B S 0.08 0 1009 3041 Overcast 96% cloud 12:00 12.5 87 3 1 1B SE 0.48 0 1007 3025 Cloudy 68% cloud 15:00 12.5 85 1 1 1B S 0.26 0 1006 3011 Cloudy 79% cloud 18:00 12.1 91 6 3 2B W 3.4 0 1006 2998 Overcast 94% cloud 21:00 11.5 96 13 7 3B W 9.1 0 1008 2813 Overcast 98% cloud Friday, 06/11 00:00 12.7 89 16 9 3B W 3.1 0 1010 2763 Partly cloudy 39% cloud 03:00 14.7 59 21 11 4B W 0.37 0 1009 2732 Cloudy 64% cloud 06:00 11.8 80 20 11 4B W 1.9 0 1012 2568 Cloudy 74% cloud 09:00 9.2 84 17 9 3B W 1.3 0 1015 2313 Cloudy 74% cloud 12:00 7.3 92 14 7 3B W 3.0 0 1018 1966 Overcast 96% cloud 15:00 5.7 92 13 7 3B W 7.5 0 1019 1647 Overcast 99% cloud 18:00 4.9 93 14 8 3B W 5.7 0 1019 1495 Overcast 90% cloud 21:00 4.5 89 17 9 3B SW 1.8 0 1020 1443 Overcast 95% cloud Saturday, 07/11 00:00 4.6 89 16 9 3B W 5.7 0 1024 1405 Overcast 99% cloud 03:00 4.8 83 17 9 3B W 6.4 0 1025 1420 Overcast 87% cloud 06:00 4.3 82 17 9 3B W 5.9 0 1026 1373 Cloudy 79% cloud 09:00 3.1 88 13 7 3B W 3.5 0 1029 1266 Overcast 83% cloud 12:00 2.4 88 10 6 2B SW 1.3 0 1031 1273 Cloudy 71% cloud 15:00 2.5 84 12 6 2B W 0.23 0 1032 1394 Overcast 88% cloud 18:00 2.8 86 10 5 2B W 0.53 0 1033 1555 Overcast 94% cloud 21:00 2.8 85 7 4 2B W 0.67 0 1034 1757 Overcast 96% cloud Sunday, 08/11 00:00 4.7 74 5 3 1B W 0.32 0 1035 2266 Overcast 85% cloud 03:00 6.9 60 7 4 2B NW 0 0 1033 2510 Overcast 82% cloud 06:00 6.3 63 5 3 1B NE 0.05 0 1032 2513 Overcast 80% cloud 09:00 4.1 78 4 2 1B E 0 0 1032 2081 Overcast 98% cloud 12:00 3.7 78 6 3 2B SE 0 0 1032 1827 Overcast 90% cloud 15:00 3.6 78 3 2 1B SE 0 0 1029 1760 Overcast 98% cloud 18:00 4.1 75 4 2 1B SE 0.10 0 1028 1789 Overcast 100% cloud 21:00 4.7 81 3 2 1B SE 0.31 0 1026 1828 Overcast 99% cloud Monday, 09/11 00:00 8.1 78 2 1 1B SW 0.22 0 1024 2148 Cloudy 75% cloud 03:00 10.8 65 7 4 2B W 0 0 1022 2296 Partly cloudy 26% cloud 06:00 10.9 67 9 5 2B W 0 0 1021 2261 Cloudy 74% cloud 09:00 7.7 91 12 6 2B NW 2.1 0 1022 2115 Overcast 94% cloud 12:00 5.6 93 11 6 2B N 11.2 0 1025 1769 Overcast 100% cloud 15:00 4.6 89 8 4 2B NW 3.8 0 1025 1523 Overcast 99% cloud 18:00 3.5 87 7 4 2B NW 1.4 0 1026 1399 Overcast 95% cloud 21:00 2.8 87 6 3 2B W 0.80 0 1026 1314 Cloudy 75% cloud Tuesday, 10/11 00:00 3.2 84 7 4 2B W 1.1 0 1028 1352 Overcast 84% cloud 03:00 4 83 12 6 2B NW 2.9 0 1027 1458 Overcast 92% cloud 06:00 3 87 8 4 2B NW 2.4 0 1027 1445 Overcast 90% cloud 09:00 1.9 89 3 2 1B NW 0.58 0 1028 1281 Overcast 96% cloud 12:00 1 87 2 1 1B W 0.04 0 1028 1046 Overcast 91% cloud 15:00 0.2 95 4 2 1B S 0.09 0 1028 791 Overcast 81% cloud 18:00 -0.1 90 5 3 1B S 0 0 1028 < 738 Cloudy 72% cloud 21:00 -0.3 87 5 3 1B S 0 0 1029 < 738 Cloudy 64% cloud Wednesday, 11/11 00:00 5 64 4 2 1B W 0 0 1031 1677 Cloudy 64% cloud 03:00 7.4 57 7 4 2B NW 0 0 1029 1937 Clear 10% cloud 06:00 7.2 59 6 3 2B N 0 0 1030 2005 Clear 1% cloud |
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Forecast table times: UTC.
Coordinates: 36.9225159°N, 137.8865279°E · Requested elevation: 734 m. Model terrain: 735 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) uses additional 600/500 hPa temperatures when available and 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.