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.
Preparing forecast graphs…
Times and values match the detailed forecast. Tap or point at a value for details. Scroll each chart sideways for later days. Rain / precipitation is the total water equivalent per forecast interval, including snow; snowfall is fresh snow per interval, not snow depth.
GFS and ECMWF model comparison. Each model retains its own forecast times and horizon. Precipitation and snowfall amounts cover their own forecast intervals; these can differ between models.
ECMWF · Model run: Next update expected:
Day Local time Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Thursday, 05/11 00:00 5 79 6 3 2B S 0 0 1027 2661 Overcast 100% cloud 03:00 5.4 91 7 4 2B SW 0 0 1025 2475 Overcast 100% cloud 06:00 6.4 96 6 3 2B SW 2.9 0 1024 2566 Overcast 100% cloud 09:00 8.3 97 7 4 2B S 5.6 0 1021 2780 Overcast 100% cloud 12:00 9.6 98 10 6 2B SE 1.6 0 1016 2848 Overcast 100% cloud 15:00 10.2 98 9 5 2B SE 1.2 0 1012 2927 Overcast 100% cloud 18:00 10 98 9 5 2B S 2.1 0 1010 2927 Overcast 100% cloud 21:00 10.1 97 8 4 2B SW 0.81 0 1007 2917 Overcast 100% cloud Friday, 06/11 00:00 9.7 96 10 5 2B SW 0.69 0 1004 2977 Overcast 83% cloud 03:00 9.8 97 14 7 3B W 0.16 0 1002 2876 Overcast 96% cloud 06:00 9.4 98 15 8 3B W 0.52 0 1002 2667 Overcast 100% cloud 09:00 10.4 94 16 9 3B W 0.52 0 1003 2404 Overcast 93% cloud 12:00 11.6 68 28 15 4B W 0.78 0 1002 2230 Overcast 94% cloud 15:00 10.5 82 24 13 4B W 0.44 0 1003 2341 Overcast 98% cloud 18:00 7.3 85 29 16 5B W 1.1 0 1007 1946 Cloudy 69% cloud 21:00 4.5 93 29 16 5B W 1.1 0 1009 1388 Overcast 99% cloud Saturday, 07/11 00:00 2 93 30 16 5B W 2.9 0 1011 940 Overcast 99% cloud 03:00 0.6 84 28 15 4B W 1.1 0.3 1012 731 Overcast 96% cloud 06:00 -0 87 22 12 4B W 1.4 0.4 1013 642 Overcast 100% cloud 09:00 0.8 74 24 13 4B W 0.91 0.3 1014 733 Cloudy 51% cloud 12:00 1.7 63 32 17 5B W 1.1 0 1013 818 Cloudy 53% cloud 15:00 0.9 67 28 15 4B W 0.86 0.3 1015 749 Cloudy 57% cloud 18:00 -0.2 80 31 17 5B W 1.1 0.3 1017 624 Overcast 90% cloud 21:00 -0.2 83 28 15 4B W 1.1 0.3 1020 616 Overcast 89% cloud Sunday, 08/11 00:00 -0.4 81 28 15 4B W 0.77 0.2 1022 587 Cloudy 75% cloud 03:00 -0.7 78 26 14 4B W 0.54 0.2 1024 561 Overcast 81% cloud 06:00 -0.7 82 23 12 4B W 0.34 0.1 1026 548 Overcast 90% cloud 09:00 1.4 70 29 16 5B W 0.27 0 1027 807 Overcast 91% cloud 12:00 2.2 65 31 17 5B W 0.08 0 1027 881 Overcast 92% cloud 15:00 1.8 66 25 13 4B W 0.06 0 1029 840 Overcast 97% cloud 18:00 0.6 75 20 11 4B W 0.05 0 1030 724 Overcast 85% cloud 21:00 0.3 79 14 8 3B W 0.02 0 1031 687 Overcast 94% cloud Monday, 09/11 00:00 0.3 76 13 7 3B W 0.04 0 1030 698 Overcast 95% cloud 03:00 -0.3 79 12 7 3B W 0.06 0 1029 596 Overcast 91% cloud 06:00 -1.3 87 11 6 2B W 0.19 0 1029 < 505 Cloudy 79% cloud 09:00 1.9 73 10 5 2B W 0.03 0 1028 872 Overcast 89% cloud 12:00 3.2 65 10 6 2B W 0.01 0 1025 974 Overcast 97% cloud 15:00 1.9 78 9 5 2B W 0.19 0 1024 896 Overcast 96% cloud 18:00 0.3 88 10 6 2B W 0.67 0.2 1024 704 Overcast 92% cloud 21:00 -0.2 92 14 8 3B W 0.54 0.2 1023 614 Overcast 93% cloud Tuesday, 10/11 00:00 -1.8 84 19 10 3B W 0.15 0 1022 < 505 Overcast 83% cloud 03:00 -1.4 79 27 15 4B W 0.26 0.1 1022 < 505 Overcast 85% cloud 06:00 -2.6 77 22 12 4B NW 0.26 0.1 1023 < 505 Cloudy 74% cloud 09:00 -1.8 63 17 9 3B NW 0.00 0 1026 < 505 Cloudy 51% cloud 12:00 -0.8 64 10 6 2B NW 0.06 0 1026 571 Cloudy 73% cloud 15:00 -0.9 62 6 3 2B NW 0.00 0 1027 558 Partly cloudy 49% cloud |
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Forecast table times: Asia/Tokyo.
Coordinates: 39.813996°N, 140.9670299°E · Requested elevation: 646 m. Model terrain: 502 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) 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.

Iwate Kogen Snow Park is a downhill ski area in Iwate Prefecture, Japan. Mapped terrain includes beginner, easy, intermediate, advanced routes. Its mapped lift network extends from approximately 646 to 1207 metres above sea level.
Data: OpenSkiData / OpenSkiMap, OpenStreetMap contributors (ODbL), Skimap.org, Who's On First, Mapterhorn.
Preparing forecast graphs…
Times and values match the detailed forecast. Tap or point at a value for details. Scroll each chart sideways for later days. Rain / precipitation is the total water equivalent per forecast interval, including snow; snowfall is fresh snow per interval, not snow depth.
GFS and ECMWF model comparison. Each model retains its own forecast times and horizon. Precipitation and snowfall amounts cover their own forecast intervals; these can differ between models.
ECMWF · Model run: Next update expected:
Day Local time Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Thursday, 05/11 00:00 4.9 79 6 3 2B S 0 0 1027 2661 Overcast 100% cloud 03:00 5.5 91 7 4 2B S 0 0 1025 2475 Overcast 100% cloud 06:00 6.4 96 6 3 2B SW 2.9 0 1024 2565 Overcast 100% cloud 09:00 8.3 97 7 4 2B S 5.6 0 1021 2779 Overcast 100% cloud 12:00 9.6 98 10 6 2B SE 1.6 0 1016 2848 Overcast 100% cloud 15:00 10.2 98 9 5 2B SE 1.2 0 1012 2928 Overcast 100% cloud 18:00 10 98 9 5 2B S 2.1 0 1010 2927 Overcast 100% cloud 21:00 10.1 97 7 4 2B SW 0.82 0 1007 2917 Overcast 100% cloud Friday, 06/11 00:00 9.7 96 10 5 2B SW 0.69 0 1004 2977 Overcast 84% cloud 03:00 9.8 97 13 7 3B W 0.16 0 1002 2874 Overcast 96% cloud 06:00 9.4 98 15 8 3B W 0.53 0 1002 2665 Overcast 100% cloud 09:00 10.4 94 16 9 3B W 0.53 0 1003 2403 Overcast 93% cloud 12:00 11.6 68 28 15 4B W 0.79 0 1002 2229 Overcast 94% cloud 15:00 10.5 82 24 13 4B W 0.44 0 1003 2340 Overcast 98% cloud 18:00 7.3 85 29 16 5B W 1.1 0 1007 1942 Cloudy 69% cloud 21:00 4.5 93 29 16 4B W 1.1 0 1009 1385 Overcast 99% cloud Saturday, 07/11 00:00 2 93 30 16 5B W 2.9 0 1011 938 Overcast 99% cloud 03:00 0.6 84 27 15 4B W 1.1 0.3 1012 730 Overcast 96% cloud 06:00 -0 87 22 12 4B W 1.4 0.4 1013 642 Overcast 100% cloud 09:00 0.8 74 24 13 4B W 0.92 0.3 1014 733 Cloudy 52% cloud 12:00 1.7 63 32 17 5B W 1.1 0 1013 817 Cloudy 54% cloud 15:00 0.9 67 28 15 4B W 0.87 0.3 1015 748 Cloudy 58% cloud 18:00 -0.2 80 31 16 5B W 1.1 0.3 1017 623 Overcast 90% cloud 21:00 -0.2 83 27 15 4B W 1.1 0.3 1020 616 Overcast 89% cloud Sunday, 08/11 00:00 -0.4 81 28 15 4B W 0.79 0.2 1022 588 Cloudy 75% cloud 03:00 -0.7 78 26 14 4B W 0.54 0.2 1024 560 Overcast 80% cloud 06:00 -0.7 82 23 12 4B W 0.35 0.1 1026 547 Overcast 90% cloud 09:00 1.4 70 29 16 5B W 0.27 0 1027 806 Overcast 91% cloud 12:00 2.2 65 31 17 5B W 0.08 0 1027 880 Overcast 93% cloud 15:00 1.7 66 25 13 4B W 0.06 0 1029 839 Overcast 97% cloud 18:00 0.6 75 20 11 4B W 0.05 0 1030 723 Overcast 85% cloud 21:00 0.3 79 14 8 3B W 0.02 0 1031 687 Overcast 94% cloud Monday, 09/11 00:00 0.3 76 13 7 3B W 0.04 0 1030 697 Overcast 95% cloud 03:00 -0.3 79 12 7 3B W 0.06 0 1029 597 Overcast 91% cloud 06:00 -1.3 87 11 6 2B W 0.19 0 1029 < 507 Cloudy 79% cloud 09:00 1.9 73 10 5 2B W 0.03 0 1028 871 Overcast 89% cloud 12:00 3.2 65 10 6 2B W 0.01 0 1025 973 Overcast 97% cloud 15:00 1.9 78 9 5 2B W 0.19 0 1024 895 Overcast 96% cloud 18:00 0.3 88 10 6 2B W 0.68 0.2 1024 703 Overcast 92% cloud 21:00 -0.2 92 14 8 3B W 0.54 0.2 1023 613 Overcast 93% cloud Tuesday, 10/11 00:00 -1.8 84 19 10 3B W 0.15 0 1022 < 507 Overcast 83% cloud 03:00 -1.4 79 27 15 4B W 0.27 0.1 1022 < 507 Overcast 85% cloud 06:00 -2.6 78 22 12 4B NW 0.27 0.1 1023 < 507 Cloudy 74% cloud 09:00 -1.9 63 17 9 3B NW 0.00 0 1026 < 507 Cloudy 52% cloud 12:00 -0.8 64 10 6 2B NW 0.06 0 1026 570 Cloudy 74% cloud 15:00 -0.9 62 6 3 2B NW 0.00 0 1027 556 Partly cloudy 49% cloud |
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Forecast table times: Asia/Tokyo.
Coordinates: 39.8150962°N, 140.9648842°E · Requested elevation: 646 m. Model terrain: 505 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) 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.
Preparing forecast graphs…
Times and values match the detailed forecast. Tap or point at a value for details. Scroll each chart sideways for later days. Rain / precipitation is the total water equivalent per forecast interval, including snow; snowfall is fresh snow per interval, not snow depth.
GFS and ECMWF model comparison. Each model retains its own forecast times and horizon. Precipitation and snowfall amounts cover their own forecast intervals; these can differ between models.
ECMWF · Model run: Next update expected:
Day Local time Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Thursday, 05/11 00:00 4.4 62 26 14 4B S 0 0 1027 2660 Overcast 100% cloud 03:00 4.8 87 29 15 4B SW 0 0 1025 2480 Overcast 100% cloud 06:00 5.2 85 24 13 4B SW 2.8 0 1024 2564 Overcast 100% cloud 09:00 6.4 91 37 20 5B S 5.6 0 1021 2775 Overcast 100% cloud 12:00 7.7 97 47 25 6B S 1.6 0 1016 2846 Overcast 100% cloud 15:00 8.4 98 44 24 6B SE 1.2 0 1012 2929 Overcast 100% cloud 18:00 8.4 96 38 21 5B S 2.2 0 1010 2925 Overcast 100% cloud 21:00 8.9 96 35 19 5B SW 0.82 0 1007 2915 Overcast 100% cloud Friday, 06/11 00:00 8.2 92 38 20 5B SW 0.66 0 1004 2977 Overcast 84% cloud 03:00 8 90 45 25 6B W 0.16 0 1002 2868 Overcast 95% cloud 06:00 6.8 95 47 25 6B W 0.51 0 1002 2663 Overcast 100% cloud 09:00 6.4 90 47 25 6B W 0.57 0 1003 2397 Overcast 93% cloud 12:00 5.6 85 51 28 7B W 0.76 0 1002 2225 Overcast 95% cloud 15:00 6.3 91 64 34 8B W 0.43 0 1003 2335 Overcast 98% cloud 18:00 3.7 79 65 35 8B W 1.1 0 1007 1935 Cloudy 71% cloud 21:00 1 88 62 33 7B W 1.1 0.3 1009 1374 Overcast 99% cloud Saturday, 07/11 00:00 -1.9 85 70 38 8B W 2.9 0.9 1011 933 Overcast 99% cloud 03:00 -3.5 83 66 36 8B W 1.1 1.1 1012 725 Overcast 96% cloud 06:00 -4.3 89 64 34 8B W 1.4 1.4 1013 643 Overcast 100% cloud 09:00 -4.4 78 70 38 8B W 0.97 1 1014 730 Cloudy 54% cloud 12:00 -3.9 72 76 41 9B W 1.2 1.2 1013 812 Cloudy 57% cloud 15:00 -4.1 76 79 43 9B W 0.94 0.9 1015 740 Cloudy 61% cloud 18:00 -4.3 88 73 39 8B W 1.2 1.2 1017 619 Overcast 91% cloud 21:00 -4.3 88 70 38 8B W 1.2 1.2 1020 610 Overcast 90% cloud Sunday, 08/11 00:00 -4.5 84 70 38 8B W 0.89 0.9 1022 586 Cloudy 77% cloud 03:00 -4.9 83 64 35 8B W 0.60 0.6 1024 552 Overcast 82% cloud 06:00 -4.8 87 56 30 7B W 0.40 0.4 1026 537 Overcast 91% cloud 09:00 -3.6 78 63 34 8B W 0.31 0.3 1027 795 Overcast 91% cloud 12:00 -3.2 77 56 30 7B W 0.10 0.1 1027 875 Overcast 93% cloud 15:00 -3.4 79 47 26 6B W 0.07 0.1 1029 833 Overcast 97% cloud 18:00 -3.7 79 46 25 6B W 0.06 0.1 1030 717 Overcast 86% cloud 21:00 -4 84 37 20 5B W 0.02 0 1031 680 Overcast 95% cloud Monday, 09/11 00:00 -3.8 83 38 20 5B W 0.05 0.1 1030 690 Overcast 95% cloud 03:00 -4.1 86 38 20 5B W 0.08 0.1 1029 585 Overcast 92% cloud 06:00 -4 83 30 16 5B W 0.21 0.2 1029 < 518 Overcast 81% cloud 09:00 -2.9 84 24 13 4B W 0.04 0 1028 859 Overcast 90% cloud 12:00 -2.4 83 16 9 3B W 0.02 0 1025 966 Overcast 97% cloud 15:00 -2.5 88 18 10 3B W 0.20 0 1024 889 Overcast 96% cloud 18:00 -3 88 25 14 4B W 0.66 0.7 1024 693 Overcast 92% cloud 21:00 -4.2 90 40 22 6B W 0.53 0.5 1023 612 Overcast 93% cloud Tuesday, 10/11 00:00 -5.5 79 53 28 7B W 0.15 0.1 1022 < 518 Overcast 83% cloud 03:00 -5.5 76 64 35 8B W 0.29 0.3 1022 < 518 Overcast 87% cloud 06:00 -7 74 54 29 7B NW 0.29 0.3 1023 < 518 Cloudy 74% cloud 09:00 -7.4 73 35 19 5B NW 0.01 0 1026 < 518 Cloudy 55% cloud 12:00 -6.8 83 19 10 3B NW 0.07 0.1 1026 556 Cloudy 75% cloud 15:00 -6.3 73 13 7 3B NW 0.01 0 1027 541 Partly cloudy 48% cloud |
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Forecast table times: Asia/Tokyo.
Coordinates: 39.8315741°N, 140.9668341°E · Requested elevation: 1207 m. Model terrain: 516 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) 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.