Acceptable conditions

Rotenflue Nord — 1508m

Imported · Orientation NW · 315°
55%
Local flying
Best window: 11h — 14h
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 11h — 14hXC window No clear XC window
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Launch wind
8 km/h
N · 348°
Gust spread
29 km/h
rough launch feel
Lift quality
0.4 m/s
2/5 climb support
Cloud base
1311 m
32.3 km
Precipitation risk
0.3 mm/h
light showers possible
Acceptable conditions

Rotenflue Nord — 1508m

Imported · Orientation NW · 315°

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Hourly windows

2026-05-04 · Local flying
6h
🌙
NIGHT
7h
☁️
NO-GO
tailwind
8h
☁️
NO-GO
tailwind
9h
⛅
NO-GO
tailwind
10h
⛅
MARGINAL
11h
⛅
GO
12h
⛅
GO
13h
⛅
GO
14h
⛅
GO
15h
☁️
MARGINAL
16h
☁️
MARGINAL
17h
☁️
GO
18h
☁️
GO
19h
☁️
GO
20h
☁️
GO
Best window: 11h — 14h
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
——
1603m
1963m
2448m
2833m
2798m
3038m
3128m
3023m
2768m
2423m
2058m
Base
clouds
——
2608m
2721m
2870m
2958m
2971m
2896m
2796m
2683m
2558m
2420m
2283m
3600m
↗
10
↗
10
↗
11
↗
13
↗
15
↗
16
↗
18
↗
20
↗
22
↗
23
↗
24
↗
24
↗
23
3400m
↗
9
↗
9
↗
9
↗
11
↗
13
↗
14
↗
16
↗
19
↑
21
↗
22
↗
23
↗
23
↗
21
3200m
↗
8
↗
7
↗
8
↗
9
↗
10
↗
12
↑
14
↑
17
↑
20
↑
21
↑
22
↑
21
↑
20
3000m
↗
7
↗
6
↗
6
↗
8
↗
9
↗
11
↑
13
↑
15
↑
18
↑
19
↑
19
↑
19
↑
18
2800m
↗
6
↗
5
↑
6
↑
7
↑
8
↑
10
↑
11
↑
13
↖
15
↗
15
↗
16
↗
16
↗
15
2600m
↗
6
↑
5
↑
5
↑
6
↑
8
↑
9
↑
9
↖
10
↖
12
→
12
↗
12
↗
13
↗
13
2400m
↗
5
↑
4
↑
4
↑
6
↑
7
↑
8
↑
8
↖
7
←
9
→
9
↗
9
↗
10
↗
10
2200m
↑
4
↑
4
↑
4
↑
5
↑
6
↖
7
↖
6
←
5
↙
6
↘
5
→
5
↗
7
↗
8
2000m
↑
4
↑
3
↑
3
↖
4
↖
6
↖
6
↖
4
←
2
↓
3
↓
2
→
2
→
4
→
5
1800m
↑
4
↑
4
↑
4
↖
4
↖
5
←
5
←
5
↙
5
↓
6
↓
6
↘
5
→
5
→
6
1600mLAUNCH
↑
5
↑
5
↑
5
↖
4
←
3
←
4
↙
6
↓
8
↓
10
↓
10
↘
8
↘
6
↘
6
1400mLAUNCH
↑
6
↑
6
↑
5
↖
3
←
3
↙
4
↓
7
↓
10
↓
12
↓
11
↓
9
↓
7
↘
6
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 21:57
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.