Acceptable conditions

Arosa Weisshorn S — 2632m

Imported · Orientation SE, S, SW · 180°
55%
Local flying
Best window: 10h — 20h
Local flying reaches 55% because the launch setup looks mostly workable, while lift quality and timing are what keep the score from climbing higher.
Local window 10h — 20hXC window No clear XC window
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Launch wind
9 km/h
SW · 224°
Gust spread
30 km/h
rough launch feel
Lift quality
0.2 m/s
2/5 climb support
Cloud base
1973 m
32.4 km
Precipitation risk
Dry
no signal
Acceptable conditions

Arosa Weisshorn S — 2632m

Imported · Orientation SE, S, SW · 180°

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Hourly windows

2026-05-04 · Local flying
6h
🌙
NIGHT
7h
☁️
MARGINAL
8h
☁️
MARGINAL
9h
🌤
MARGINAL
10h
🌤
GO
11h
🌤
GO
12h
🌤
GO
13h
🌤
GO
14h
🌤
GO
15h
☁️
GO
16h
☁️
GO
17h
☁️
GO
18h
🌤
GO
19h
🌤
GO
20h
🌤
GO
Best window: 10h — 20h
AI analysis
No analysis available for this day.

📊 Wind & thermals aloft

🎓 Full view
💡
Overview: colored arrows show wind speed and direction. Yellow to orange cells highlight the active thermal layer. The LAUNCH line marks the takeoff altitude.
Alt.6h7h8h9h10h11h12h13h14h15h16h17h18h
Top
BLH
——
2677m
2807m
3002m
3222m
3432m
3587m
3652m
3597m
3457m
3262m
3052m
Base
clouds
——
3282m
3557m
4045m
4545m
4770m
4770m
4720m
4720m
4670m
4607m
4457m
3600m
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3400m
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3200m
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3000m
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2800m
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2600mLAUNCH
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2400m
2200m
2000m
1800m
1600m
1400m
1200m
1000m
800m
600m
400m
200m
0m
0–56–1011–1516–2021–25>25km/hBLH topCloud baseThermals

💨 Wind at launch

🎓 Safety thresholds
💡
Mean wind is the constant speed. Gusts are sudden accelerations. Thresholds: 15 km/h = caution, 25 km/h = critical.

🌡 Temperature

🎓 Why it matters?
💡
Launch temperature affects your comfort and safety. Below 0°C, your fingers go numb and handling controls becomes difficult.

💧 Precipitation

🎓 Impact on the wing
⚠️
Golden rule: never fly in rain or snow. Water weighs down the wing (up to +5 kg), alters its aerodynamic profile and reduces lift. Snow can freeze on suspension lines.
Snow Rain/Showers

Sources: Open-Meteo (AROME 1.3km, ICON-D2 2km) · 2026-05-04 · Data fetched on 28 Apr at 20:06
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.