Flying not recommended

Mervelier — 757m

Jura · Orientation W

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Hourly windows

2026-04-05 · Local flying
7h
🌙
NIGHT
8h
🌤
NO-GO
gusts
9h
☀️
NO-GO
gusts
10h
☁️
NO-GO
gusts
11h
☁️
MARGINAL
12h
☁️
GO
13h
⛅
NO-GO
gusts
14h
⛅
NO-GO
gusts
15h
☁️
NO-GO
gusts
16h
☁️
NO-GO
gusts
17h
☁️
NO-GO
gusts
18h
☁️
NO-GO
gusts
19h
☁️
MARGINAL
20h
☁️
MARGINAL
Best window: 12h — 12h
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
——
807m
852m
1057m
1962m
2337m
2382m
2587m
2562m
1892m
1552m
1652m
Base
clouds
——
1920m
1882m
1882m
2307m
2357m
2207m
2295m
3007m
2832m
2532m
1995m
3600m
→
55
→
54
→
61
→
63
→
64
→
60
→
62
→
57
→
62
→
62
→
67
→
68
→
69
3400m
→
55
→
54
→
62
→
63
→
63
→
59
→
61
→
54
→
60
→
61
→
67
→
67
→
68
3200m
→
55
→
54
→
63
→
62
→
62
→
58
→
60
→
51
→
59
→
60
→
67
→
65
→
68
3000m
→
54
→
54
→
62
→
61
→
61
→
57
→
58
→
49
→
57
→
59
→
64
→
63
→
65
2800m
→
53
→
53
→
61
→
60
→
60
→
57
→
55
→
48
→
55
→
56
→
61
→
60
→
61
2600m
→
51
→
52
→
60
→
59
→
59
→
56
→
53
→
46
→
53
→
54
→
57
→
56
→
57
2400m
→
50
→
51
→
58
→
58
→
58
→
55
→
51
→
45
→
51
→
51
→
54
→
53
→
52
2200m
→
48
→
50
→
57
→
57
→
58
→
55
→
49
→
44
→
49
→
49
→
50
→
50
→
48
2000m
→
47
→
49
→
56
→
56
→
57
→
54
→
46
→
42
→
47
→
47
→
47
→
47
→
44
1800m
→
45
→
48
→
54
→
55
→
56
→
53
→
44
→
41
→
45
→
44
→
43
→
44
→
40
1600m
→
44
→
47
→
53
→
54
→
56
→
53
→
41
→
39
→
44
→
42
→
40
→
41
→
36
1400m
→
37
→
40
→
45
→
46
→
48
→
46
→
37
→
35
→
39
→
38
→
36
→
36
→
31
1200m
↗
29
↗
31
→
35
→
36
↗
39
↗
38
→
31
→
31
→
34
→
33
→
32
→
32
→
26
1000m
↗
21
↗
22
↗
25
↗
27
↗
31
↗
30
→
26
→
27
→
29
→
28
→
27
→
27
→
22
800mLAUNCH
↗
14
↗
15
↗
16
↗
18
↗
22
↗
22
↗
21
→
23
→
24
→
24
→
23
→
22
→
17
600m
↑
12
↑
12
↑
11
↑
12
↗
15
↗
15
↗
16
→
19
→
20
→
20
→
20
→
18
→
13
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) · 2026-04-05 · Data fetched on 5 Apr at 16:15
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.