Flying not recommended

Brienzer Rothorn (SO) — 2230m

Imported · Orientation SE · 135°
25%
Local flying
Best window: No clear local window
Local flying is limited first by tailwind / strong back-cross at launch. Outside of that constraint, some periods still look flyable, but the day is not broadly comfortable.
Local window No clear local windowXC window No clear XC windowWatch-out: Tailwind / strong back-cross at launch
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Launch wind
8 km/h
NW · 312°
Gust spread
32 km/h
rough launch feel
Lift quality
0.5 m/s
4/5 climb support
Cloud base
1027 m
40.9 km
Precipitation risk
0.2 mm/h
light showers possible
Flying not recommended

Brienzer Rothorn (SO) — 2230m

Imported · Orientation SE · 135°

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Hourly windows

2026-05-04 · Local flying
6h
🌙
NIGHT
7h
☁️
NO-GO
low vis
8h
☁️
NO-GO
low vis
9h
🌤
MARGINAL
10h
🌤
MARGINAL
11h
🌤
NO-GO
tailwind
12h
🌦
NO-GO
tailwind
13h
🌦
NO-GO
tailwind
14h
🌦
NO-GO
tailwind
15h
☁️
NO-GO
tailwind
16h
☁️
NO-GO
tailwind
17h
☁️
NO-GO
tailwind
18h
🌦
NO-GO
tailwind
19h
🌦
NO-GO
tailwind
20h
🌦
NO-GO
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
——
2290m
2375m
2480m
2595m
2710m
2790m
2830m
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2750m
2660m
2560m
Base
clouds
——
2893m
3043m
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3393m
3355m
3268m
3180m
3180m
3180m
3155m
3005m
3600m
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12
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3400m
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3200m
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3000m
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2800m
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2600m
↑
6
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6
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10
→
14
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17
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2400m
↑
5
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5
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→
11
→
14
→
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→
12
2200mLAUNCH
↑
3
↑
4
↖
5
↑
5
↑
7
↑
6
↗
5
↘
8
↘
11
→
12
→
10
→
10
→
10
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 20:08
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.