Marginal conditions

Chellechöpfli S — 1116m

Jura · Orientation S
35%
Local flying
Best window: No clear local window
Local flying reaches 35% because launch wind and basic weather stay usable, but the day does not generate enough lift to feel easy or rewarding for long.
Local window No clear local windowXC window No clear XC window
Forecast-based estimate — not a flight clearance. Always check live conditions and assess on site.
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Launch wind
11 km/h
W · 277°
Gust spread
35 km/h
rough launch feel
Lift quality
0.1 m/s
0/5 climb support
Cloud base
1273 m
41.0 km
Precipitation risk
Dry
no signal
Marginal conditions

Chellechöpfli S — 1116m

Jura · Orientation S

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Hourly windows

2026-08-18 · Local flying
6h
🌙
NIGHT
7h
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MARGINAL
8h
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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
——
1166m
1331m
2471m
2836m
2976m
3021m
2931m
2986m
3026m
2881m
2371m
Base
clouds
——
1654m
1828m
2041m
2229m
2341m
2429m
2466m
2554m
2666m
2679m
2554m
3600m
↘
52
↘
52
↘
51
↘
48
↘
45
↘
43
↘
44
↘
45
↘
47
↘
47
↘
46
↘
45
↘
45
3400m
↘
46
↘
47
↘
46
↘
45
↘
43
↘
42
↘
42
↘
43
↘
44
↘
44
↘
43
↘
43
↘
43
3200m
↘
40
↘
42
↘
42
↘
41
↘
41
↘
41
↘
41
↘
41
↘
42
↘
41
↘
40
↘
40
↘
41
3000m
↘
36
↘
38
↘
39
↘
39
↘
39
↘
39
↘
39
↘
39
↘
38
↘
38
↘
37
↘
37
↘
38
2800m
↘
34
↘
36
↘
36
↘
37
↘
37
↘
37
↘
37
↘
36
↘
35
↘
34
↘
34
↘
34
↘
35
2600m
↘
33
→
33
↘
34
↘
34
↘
36
↘
36
↘
34
↘
33
→
32
→
31
→
31
↘
31
→
32
2400m
→
31
→
31
→
32
↘
32
↘
34
↘
34
↘
32
→
30
→
29
→
28
→
27
→
28
→
29
2200m
→
29
→
28
→
29
→
30
→
32
→
32
→
30
→
27
→
25
→
24
→
24
→
25
→
26
2000m
→
27
→
26
→
28
→
29
→
30
→
29
→
27
→
24
→
23
→
21
→
21
→
22
→
23
1800m
→
25
→
26
→
29
→
28
→
27
→
26
→
24
→
22
→
21
→
20
→
20
→
20
→
21
1600m
→
23
→
25
→
29
→
28
→
25
→
22
→
21
→
19
→
19
→
18
→
18
→
18
→
19
1400m
→
21
→
23
→
27
→
26
→
23
→
21
→
20
→
19
→
18
→
17
→
17
→
17
→
17
1200mLAUNCH
→
18
→
20
→
23
→
22
→
22
→
21
→
19
→
18
→
17
→
17
→
16
→
16
→
16
1000mLAUNCH
→
15
→
16
→
18
→
19
→
20
→
20
→
19
→
18
→
16
→
16
→
15
→
15
→
15
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
Updated 78h ago

Sources: Open-Meteo (AROME 1.3km, ICON-D2 2km) · 2026-08-18
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.