Marginal conditions

Chasseral Croix N — 1539m

Jura · Orientation N, NW

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Hourly windows

2026-04-06 · Local flying
7h
🌙
NIGHT
8h
🌤
MARGINAL
9h
🌤
MARGINAL
10h
🌤
MARGINAL
11h
☀️
MARGINAL
12h
☀️
MARGINAL
13h
🌤
MARGINAL
14h
⛅
MARGINAL
15h
⛅
GO
16h
☁️
GO
17h
⛅
GO
18h
🌤
GO
19h
🌤
MARGINAL
20h
☀️
NO-GO
tailwind
Best window: 15h — 18h
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
——
1549m
1669m
1944m
2164m
2394m
2734m
2989m
3074m
2934m
2299m
2089m
Base
clouds
——
2214m
2189m
2189m
2202m
2239m
2264m
2564m
2501m
2539m
2427m
2177m
3600m
→
55
→
49
→
44
→
38
→
35
→
32
→
26
↘
22
→
22
→
25
→
25
→
29
→
28
3400m
→
56
→
51
→
46
→
40
→
36
→
33
→
27
→
22
→
23
→
27
→
27
→
32
→
31
3200m
→
58
→
53
→
48
→
42
→
38
→
33
→
28
→
22
→
23
→
28
→
28
→
35
→
34
3000m
→
55
→
50
→
46
→
40
→
36
→
32
→
27
→
21
→
23
→
27
→
27
→
33
→
32
2800m
→
51
→
46
→
42
→
37
→
33
→
31
→
25
→
19
→
21
→
25
→
24
→
29
→
28
2600m
→
47
→
41
→
38
→
34
→
31
→
29
→
23
→
18
→
20
→
23
→
22
→
25
→
24
2400m
→
43
→
37
→
34
→
30
→
28
→
27
→
22
→
17
→
18
→
20
→
19
→
22
→
20
2200m
→
40
→
33
→
30
→
27
→
25
→
26
→
20
→
16
→
17
→
18
→
17
→
18
→
16
2000m
→
35
→
28
→
25
→
24
→
23
→
24
→
19
↗
15
→
15
→
16
→
14
→
15
→
12
1800m
→
31
→
24
→
22
→
21
→
20
→
23
↗
18
↗
14
↗
14
→
14
→
12
→
11
↘
9
1600mLAUNCH
→
27
→
19
↗
18
↗
18
↗
18
↗
22
↗
16
↗
13
↗
13
→
11
→
9
↘
8
↓
6
1400m
→
24
→
17
↗
15
↗
15
↗
16
↗
19
↗
15
↗
13
↗
12
→
11
→
9
↘
8
↓
6
1200m
1000m
800m
600m
400m
200m
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) · 2026-04-06 · Data fetched on 5 Apr at 22:20
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.