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 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 4.1 92 1 1 0B SE — — 1020 1929 Overcast 100% cloud 09:00 3.9 94 5 3 1B SW 1.1 0 1020 1858 Overcast 99% cloud 12:00 3.2 95 4 2 1B SW 0.95 0 1022 1718 Overcast 97% cloud 15:00 2.7 96 2 1 1B SW 0.35 0 1023 1616 Overcast 98% cloud 18:00 4.6 87 6 3 2B SW 0.34 0 1025 1614 Overcast 85% cloud 21:00 6.7 70 3 2 1B SW 0.11 0 1023 1901 Partly cloudy 33% cloud Friday, 06/11 00:00 5 79 1 1 1B SW 0 0 1023 1979 Partly cloudy 32% cloud 03:00 2.5 88 2 1 1B E 0 0 1024 1931 Overcast 97% cloud 06:00 1.9 87 5 3 1B E 0 0 1023 2202 Overcast 97% cloud 09:00 3 82 7 4 2B E 0 0 1022 2414 Cloudy 67% cloud 12:00 2.5 80 6 3 2B E 0 0 1020 2572 Overcast 100% cloud 15:00 2.8 85 6 3 2B E 1.0 0 1022 2402 Overcast 100% cloud 18:00 4.3 83 7 4 2B SE 1.7 0 1020 2675 Overcast 99% cloud 21:00 7.4 77 5 3 1B SE 0.86 0 1019 3075 Overcast 93% cloud Saturday, 07/11 00:00 5.3 90 4 2 1B E 5.4 0 1018 2942 Overcast 100% cloud 03:00 6.4 91 4 2 1B S 2.6 0 1019 3081 Overcast 100% cloud 06:00 6.4 94 3 2 1B W 0.34 0 1021 2943 Overcast 100% cloud 09:00 5.9 95 1 1 1B E 0.20 0 1021 3058 Overcast 98% cloud 12:00 3.6 94 7 4 2B E 0 0 1019 3084 Overcast 99% cloud 15:00 2.8 91 8 5 2B E 0 0 1017 3080 Overcast 100% cloud 18:00 8.2 75 11 6 2B SE 0 0 1016 3075 Overcast 96% cloud 21:00 10.8 74 11 6 2B SE 0 0 1014 3058 Overcast 95% cloud Sunday, 08/11 00:00 8.3 77 10 5 2B SE 0 0 1011 3023 Overcast 87% cloud 03:00 5.4 85 12 6 2B SE 0 0 1010 2820 Cloudy 71% cloud 06:00 6.2 90 3 1 1B S 5.4 0 1011 2449 Overcast 100% cloud 09:00 5.1 94 18 10 3B SW 12.7 0 1015 1821 Overcast 98% cloud 12:00 3.6 95 15 8 3B SW 2.9 0 1018 1598 Overcast 85% cloud 15:00 2.5 93 13 7 3B W 2.9 0 1021 1494 Overcast 99% cloud 18:00 3.5 92 13 7 3B W 2.4 0 1024 1484 Overcast 97% cloud 21:00 4.8 82 9 5 2B W 1.1 0 1024 1557 Overcast 95% cloud Monday, 09/11 00:00 3.8 89 3 2 1B SW 0.20 0 1025 1594 Overcast 99% cloud 03:00 1.2 92 2 1 1B E 0 0 1025 1575 Overcast 100% cloud 06:00 -0.7 94 4 2 1B E 0 0 1024 1365 Partly cloudy 42% cloud 09:00 -1.4 92 7 4 2B E 0 0 1022 1323 Partly cloudy 44% cloud 12:00 -0 83 9 5 2B E 0 0 1021 1245 Overcast 82% cloud 15:00 -0 84 9 5 2B E 0 0 1020 1223 Overcast 95% cloud 18:00 6.3 62 10 5 2B SE 0 0 1019 2184 Overcast 100% cloud 21:00 8.1 58 9 5 2B SE 0 0 1017 2248 Overcast 97% cloud Tuesday, 10/11 00:00 5.2 77 7 4 2B SE 0.24 0 1017 2248 Overcast 99% cloud 03:00 3.3 94 9 5 2B SE 3.4 0 1017 2278 Overcast 100% cloud 06:00 3.5 93 8 5 2B E 1.5 0 1017 2411 Overcast 99% cloud 09:00 3.3 93 8 4 2B E 0.91 0 1015 2444 Overcast 100% cloud 12:00 4.3 93 8 4 2B SE 4.7 0 1014 2483 Overcast 100% cloud 15:00 4.6 94 9 5 2B SE 10.4 0 1012 2602 Overcast 100% cloud 18:00 6.6 93 7 4 2B S 10.5 0 1014 2575 Overcast 100% cloud 21:00 9.2 92 8 5 2B SW 1.6 0 1014 2506 Overcast 99% cloud Wednesday, 11/11 00:00 8.4 93 4 2 1B SE 1.2 0 1014 2544 Overcast 100% cloud 03:00 7 94 9 5 2B SE 6.5 0 1014 2709 Overcast 100% cloud 06:00 6.8 93 7 4 2B SE 9.6 0 1012 2767 Overcast 100% cloud |
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Forecast table times: UTC.
Coordinates: 47.4448764°N, -121.426365°E · Requested elevation: 958 m. Model terrain: 1140 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.

Alpental is a downhill ski area in Washington, United States. Mapped terrain includes easy, intermediate, advanced, expert routes. Its mapped lift network extends from approximately 958 to 1661 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 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 4.1 92 1 1 0B SE — — 1020 1929 Overcast 100% cloud 09:00 3.9 94 5 3 1B SW 1.1 0 1020 1858 Overcast 99% cloud 12:00 3.2 95 4 2 1B SW 0.95 0 1022 1718 Overcast 97% cloud 15:00 2.7 96 2 1 1B SW 0.35 0 1023 1616 Overcast 98% cloud 18:00 4.6 87 6 3 2B SW 0.34 0 1025 1614 Overcast 85% cloud 21:00 6.7 70 3 2 1B SW 0.11 0 1023 1901 Partly cloudy 33% cloud Friday, 06/11 00:00 5 79 1 1 1B SW 0 0 1023 1979 Partly cloudy 32% cloud 03:00 2.5 88 2 1 1B E 0 0 1024 1931 Overcast 97% cloud 06:00 1.9 87 5 3 1B E 0 0 1023 2202 Overcast 97% cloud 09:00 3 82 7 4 2B E 0 0 1022 2414 Cloudy 67% cloud 12:00 2.5 80 6 3 2B E 0 0 1020 2572 Overcast 100% cloud 15:00 2.8 85 6 3 2B E 1.0 0 1022 2402 Overcast 100% cloud 18:00 4.3 83 7 4 2B SE 1.7 0 1020 2675 Overcast 99% cloud 21:00 7.4 77 5 3 1B SE 0.86 0 1019 3075 Overcast 93% cloud Saturday, 07/11 00:00 5.3 90 4 2 1B E 5.4 0 1018 2942 Overcast 100% cloud 03:00 6.4 91 4 2 1B S 2.6 0 1019 3081 Overcast 100% cloud 06:00 6.4 94 3 2 1B W 0.34 0 1021 2943 Overcast 100% cloud 09:00 5.9 95 1 1 1B E 0.20 0 1021 3058 Overcast 98% cloud 12:00 3.6 94 7 4 2B E 0 0 1019 3084 Overcast 99% cloud 15:00 2.8 91 8 5 2B E 0 0 1017 3080 Overcast 100% cloud 18:00 8.2 75 11 6 2B SE 0 0 1016 3075 Overcast 96% cloud 21:00 10.8 74 11 6 2B SE 0 0 1014 3058 Overcast 95% cloud Sunday, 08/11 00:00 8.3 77 10 5 2B SE 0 0 1011 3023 Overcast 87% cloud 03:00 5.4 85 12 6 2B SE 0 0 1010 2820 Cloudy 71% cloud 06:00 6.2 90 3 1 1B S 5.4 0 1011 2449 Overcast 100% cloud 09:00 5.1 94 18 10 3B SW 12.7 0 1015 1821 Overcast 98% cloud 12:00 3.6 95 15 8 3B SW 2.9 0 1018 1598 Overcast 85% cloud 15:00 2.5 93 13 7 3B W 2.9 0 1021 1494 Overcast 99% cloud 18:00 3.5 92 13 7 3B W 2.4 0 1024 1484 Overcast 97% cloud 21:00 4.8 82 9 5 2B W 1.1 0 1024 1557 Overcast 95% cloud Monday, 09/11 00:00 3.8 89 3 2 1B SW 0.20 0 1025 1594 Overcast 99% cloud 03:00 1.2 92 2 1 1B E 0 0 1025 1575 Overcast 100% cloud 06:00 -0.7 94 4 2 1B E 0 0 1024 1365 Partly cloudy 42% cloud 09:00 -1.4 92 7 4 2B E 0 0 1022 1323 Partly cloudy 44% cloud 12:00 -0 83 9 5 2B E 0 0 1021 1245 Overcast 82% cloud 15:00 -0 84 9 5 2B E 0 0 1020 1223 Overcast 95% cloud 18:00 6.3 62 10 5 2B SE 0 0 1019 2184 Overcast 100% cloud 21:00 8.1 58 9 5 2B SE 0 0 1017 2248 Overcast 97% cloud Tuesday, 10/11 00:00 5.2 77 7 4 2B SE 0.24 0 1017 2248 Overcast 99% cloud 03:00 3.3 94 9 5 2B SE 3.4 0 1017 2278 Overcast 100% cloud 06:00 3.5 93 8 5 2B E 1.5 0 1017 2411 Overcast 99% cloud 09:00 3.3 93 8 4 2B E 0.91 0 1015 2444 Overcast 100% cloud 12:00 4.3 93 8 4 2B SE 4.7 0 1014 2483 Overcast 100% cloud 15:00 4.6 94 9 5 2B SE 10.4 0 1012 2602 Overcast 100% cloud 18:00 6.6 93 7 4 2B S 10.5 0 1014 2575 Overcast 100% cloud 21:00 9.2 92 8 5 2B SW 1.6 0 1014 2506 Overcast 99% cloud Wednesday, 11/11 00:00 8.4 93 4 2 1B SE 1.2 0 1014 2544 Overcast 100% cloud 03:00 7 94 9 5 2B SE 6.5 0 1014 2709 Overcast 100% cloud 06:00 6.8 93 7 4 2B SE 9.6 0 1012 2767 Overcast 100% cloud |
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Forecast table times: UTC.
Coordinates: 47.4448764°N, -121.426365°E · Requested elevation: 958 m. Model terrain: 1140 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.
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 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 1.4 98 27 15 4B SW — — 1020 1930 Overcast 100% cloud 09:00 1.2 98 36 20 5B SW 1.1 0 1020 1860 Overcast 99% cloud 12:00 0.3 95 32 17 5B W 0.96 0.3 1022 1717 Overcast 97% cloud 15:00 -0.3 94 24 13 4B W 0.35 0.1 1023 1618 Overcast 98% cloud 18:00 -0.3 93 22 12 4B W 0.34 0.1 1025 1617 Overcast 84% cloud 21:00 1.1 79 14 8 3B SW 0.12 0 1023 1902 Partly cloudy 33% cloud Friday, 06/11 00:00 1.6 84 11 6 2B SW 0 0 1022 1976 Partly cloudy 33% cloud 03:00 1.1 89 13 7 3B SW 0 0 1024 1933 Overcast 97% cloud 06:00 2.1 72 15 8 3B S 0 0 1023 2205 Overcast 97% cloud 09:00 3.5 52 18 10 3B S 0 0 1022 2419 Cloudy 65% cloud 12:00 4.1 46 19 10 3B SW 0 0 1020 2583 Overcast 100% cloud 15:00 2.1 74 21 11 4B SW 1.1 0 1021 2409 Overcast 100% cloud 18:00 4.1 77 31 17 5B SW 1.7 0 1020 2681 Overcast 99% cloud 21:00 5.6 78 33 18 5B SW 0.85 0 1019 3075 Overcast 93% cloud Saturday, 07/11 00:00 5.7 87 38 20 5B SW 5.6 0 1018 2943 Overcast 100% cloud 03:00 5.8 91 45 24 6B SW 2.7 0 1019 3079 Overcast 100% cloud 06:00 4.8 92 34 19 5B SW 0.35 0 1021 2946 Overcast 100% cloud 09:00 4.2 87 16 9 3B SW 0.20 0 1021 3058 Overcast 98% cloud 12:00 6.2 62 20 11 4B SW 0 0 1019 3084 Overcast 99% cloud 15:00 7.7 50 19 10 3B SE 0 0 1017 3080 Overcast 100% cloud 18:00 7.5 68 33 18 5B SE 0 0 1016 3074 Overcast 96% cloud 21:00 7.6 66 29 16 5B SE 0 0 1014 3058 Overcast 95% cloud Sunday, 08/11 00:00 7.8 62 31 17 5B S 0 0 1011 3021 Overcast 87% cloud 03:00 7.2 65 42 23 6B S 0 0 1010 2826 Cloudy 71% cloud 06:00 4.5 89 34 18 5B SW 5.5 0 1011 2449 Overcast 100% cloud 09:00 0.9 96 56 30 7B SW 12.8 6.4 1015 1819 Overcast 98% cloud 12:00 -0.4 95 54 29 7B SW 3.0 0.9 1018 1597 Overcast 84% cloud 15:00 -1.1 97 54 29 7B W 3.0 0.9 1021 1495 Overcast 99% cloud 18:00 -1.1 95 44 24 6B W 2.4 0.7 1024 1485 Overcast 96% cloud 21:00 -0.7 88 30 16 5B W 1.1 0.3 1024 1560 Overcast 94% cloud Monday, 09/11 00:00 -0.4 86 21 11 4B W 0.21 0 1025 1598 Overcast 99% cloud 03:00 -0.3 87 14 8 3B SW 0 0 1025 1581 Overcast 100% cloud 06:00 0.7 69 8 4 2B S 0 0 1024 1348 Partly cloudy 39% cloud 09:00 1.9 58 20 11 4B SE 0 0 1022 1305 Partly cloudy 43% cloud 12:00 2.1 51 26 14 4B SE 0 0 1021 1220 Overcast 83% cloud 15:00 2.7 50 24 13 4B SE 0 0 1020 1200 Overcast 95% cloud 18:00 2.7 62 26 14 4B SE 0 0 1019 2196 Overcast 100% cloud 21:00 3.2 68 20 11 4B SE 0 0 1017 2254 Overcast 97% cloud Tuesday, 10/11 00:00 2.9 75 22 12 4B S 0.26 0 1017 2254 Overcast 99% cloud 03:00 2.7 84 27 14 4B S 3.5 0 1017 2291 Overcast 100% cloud 06:00 4 82 30 16 5B SW 1.5 0 1017 2419 Overcast 99% cloud 09:00 4.6 84 26 14 4B SW 0.89 0 1015 2450 Overcast 100% cloud 12:00 4.3 88 31 17 5B S 4.7 0 1014 2487 Overcast 100% cloud 15:00 4.6 90 35 19 5B S 10.4 0 1012 2607 Overcast 100% cloud 18:00 4.7 94 51 28 7B SW 10.6 0 1014 2574 Overcast 100% cloud 21:00 5.1 94 40 22 6B SW 1.7 0 1014 2510 Overcast 98% cloud Wednesday, 11/11 00:00 5.5 96 25 14 4B SW 1.2 0 1014 2545 Overcast 100% cloud 03:00 4.9 86 26 14 4B S 6.7 0 1013 2716 Overcast 100% cloud 06:00 5.9 87 33 18 5B S 9.5 0 1012 2768 Overcast 100% cloud |
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Forecast table times: UTC.
Coordinates: 47.4388309°N, -121.4427716°E · Requested elevation: 1661 m. Model terrain: 1121 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.