Acceptable conditions

Belchenflue S — 633m

Jura · Orientation S
55%
Local flying
Best window: 6h — 8h
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 6h — 8hXC window No clear XC window
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Launch wind
8 km/h
SW · 242°
Gust spread
24 km/h
rough launch feel
Lift quality
0.2 m/s
2/5 climb support
Cloud base
1421 m
41.9 km
Precipitation risk
Dry
no signal
Acceptable conditions

Belchenflue S — 633m

Jura · Orientation S

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Hourly windows

2026-04-09 · Local flying
6h
🌙
NIGHT
7h
☀️
GO
8h
🌤
GO
9h
🌤
MARGINAL
10h
🌤
MARGINAL
11h
🌤
MARGINAL
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
⛅
MARGINAL
Best window: 6h — 8h
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
——
678m
793m
938m
1113m
1383m
1788m
2088m
2078m
1838m
1538m
1303m
Base
clouds
——
1171m
1096m
1496m
1796m
1920m
1996m
2083m
2420m
2671m
2571m
2196m
3600m
↘
23
↘
24
↘
28
↘
27
↘
26
↘
24
↘
22
↘
22
↘
23
↘
26
↘
27
↘
28
↘
30
3400m
↘
23
↘
24
↘
27
↘
26
↘
24
↘
22
↘
21
↘
21
↘
21
↘
23
↘
24
↘
24
↘
26
3200m
↘
22
↘
23
↘
26
↘
24
↘
22
↘
21
↘
19
↘
20
↘
20
↘
21
↘
21
↘
20
↘
22
3000m
↘
21
↘
22
↘
25
↘
23
↘
21
↘
20
↘
19
↘
20
↘
19
↘
20
↘
20
↘
19
↘
21
2800m
↘
19
↘
20
↘
23
↘
22
↘
21
↘
20
↘
19
↘
19
↘
19
↘
20
↘
20
↘
19
↘
21
2600m
↘
17
↘
19
↘
21
↘
21
↘
20
↘
20
↘
19
↘
19
↘
19
↘
19
↘
20
↘
20
↘
21
2400m
→
15
↘
17
↘
19
↘
20
↘
20
↘
20
↘
19
↘
18
↘
19
↘
19
↘
21
↘
20
↘
21
2200m
→
13
→
15
↘
17
↘
19
↘
20
↘
20
↘
19
↘
18
↘
18
↘
19
↘
21
↘
20
↘
21
2000m
→
12
→
14
→
16
↘
18
↘
19
↘
20
↘
19
↘
17
→
18
↘
18
↘
22
↘
21
↘
21
1800m
→
11
→
13
→
15
→
18
→
20
↘
20
↘
20
→
17
→
19
→
19
↘
22
↘
21
↘
21
1600m
→
10
→
12
→
14
→
18
→
20
→
20
→
20
→
18
→
20
→
19
→
23
↘
21
↘
21
1400m
↗
9
→
10
→
12
→
16
→
17
→
18
→
18
→
16
→
18
→
18
→
22
↘
20
↘
20
1200m
↗
8
↗
8
→
9
→
12
→
13
↘
14
↘
15
↘
14
→
15
→
16
↘
19
↘
18
↘
17
1000m
↗
7
↗
7
↗
7
→
8
↘
9
↘
10
↘
11
↘
11
↘
13
↘
14
↘
16
↘
15
↘
14
800m
↑
8
↑
6
↗
5
→
4
↘
6
↘
6
↘
8
↘
10
↘
11
↘
12
↘
13
↘
13
↘
12
600mLAUNCH
↑
9
↑
7
↑
5
↓
1
↓
4
↓
4
↓
7
↓
9
↘
10
↘
11
↘
11
↘
11
↘
9
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) · 2026-04-09 · Data fetched on 9 Apr at 07:11
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.