Second US Ski Area Damaged By Wildfire This Summer
A second U.S. ski area has been struck by wildfire this summer, with Montana’s Maverick Mountain now facing severe damage as the fast‑moving Sand Creek Fire burns through the resort’s upper terrain.
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Koumi Riekkusu Ski Valley at 1780 m altitude
Issued by Snow-Forecast.com at: 2 pm (local time) / 14 Aug 2026
Now
Next 3 days weather summary:Heavy rain (total 23.0mm), heaviest during Fri afternoon. Very mild (max 19°C on Mon morning, min 14°C on Sat night). Wind will be generally light. | Days 4-6 weather summary:Moderate rain (total 10.0mm), heaviest on Mon afternoon. Warm (max 20°C on Tue morning, min 15°C on Mon night). Wind will be generally light. | ||||||||||||||||
Fri 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  |  | |  |  |  | | | | | | |  | |
t-storm risk | rain shwrs | t-storm risk | t-storm risk | light rain | light rain | light rain | some clouds | some clouds | rain shwrs | light rain | some clouds | some clouds | some clouds | some clouds | t-storm risk | t-storm risk | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 6 | 2 | 3 | 5 | 3 | 2 | 2 | — | — | 2 | 2 | — | — | — | — | 2 | 2 |
max °C | 18 | 16 | 16 | 16 | 15 | 16 | 16 | 15 | 19 | 18 | 16 | 20 | 20 | 16 | 20 | 20 | 18 |
min °C | 17 | 15 | 16 | 15 | 14 | 15 | 15 | 14 | 16 | 17 | 15 | 17 | 18 | 16 | 18 | 18 | 17 |
chill °C | 17 | 15 | 16 | 15 | 14 | 15 | 15 | 14 | 16 | 17 | 15 | 17 | 18 | 16 | 18 | 18 | 17 |
Humid % | 76 | 92 | 88 | 93 | 94 | 91 | 90 | 87 | 66 | 62 | 90 | 71 | 62 | 86 | 78 | 80 | 96 |
Freeze m | 4850 | 4850 | 4850 | 4850 | 4800 | 4900 | 4900 | 5200 | 5150 | 4950 | 5250 | 5250 | 5050 | 5350 | 5250 | 5150 | 5150 |
 | — | — | 5:03 | — | — | 5:03 | — | — | 5:05 | — | — | 5:05 | — | — | 5:07 | — | — |
 | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — |
Days 7-16 weather summary:
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Avalanche information: Japan Avalanche Network
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Snow Radar
Latest snow reports near Koumi Riekkusu Ski Valley:
Koumi Riekkusu Ski Valley Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 7 Apr 2026 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Nagano are reporting: powder (0) / good piste (0)
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Snow History
Week 2 of August has on average:
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.0 | Powder days Fresh snow, limited sun, any wind. |
0.0 | Bluebird days Average snow, mostly sunny, light wind. |
Koumi Riekkusu Ski Valley Forecast Snowfall
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Other resorts in Japan - Nagano are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Koumi Riekkusu Ski Valley at the specific elevation of 1780 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Koumi Riekkusu Ski Valley. To access the weather forecasts for the other elevations, use the tab navigation above the table. For a wider view of the weather, check out the Weather Map of Japan.
Click here to read further information on freezing levels and how we forecast our temperatures.
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