Marginal conditions

Le Champre — 1020m

Jura · Orientation NW
40%
Local flying
Best window: 20h — 20h
Local flying reaches 40% 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 20h — 20hXC 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
12 km/h
W · 274°
Gust spread
37 km/h
rough launch feel
Lift quality
0.1 m/s
0/5 climb support
Cloud base
1257 m
40.8 km
Precipitation risk
Dry
no signal
Marginal conditions

Le Champre — 1020m

Jura · Orientation NW

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Send this forecast to a flying buddy.

Hourly windows

2026-08-18 · Local flying
6h
🌙
NIGHT
7h
🌤
MARGINAL
8h
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MARGINAL
9h
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10h
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11h
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12h
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13h
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14h
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15h
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16h
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17h
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18h
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MARGINAL
19h
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MARGINAL
20h
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GO
Best window: 20h — 20h
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
——
1070m
1260m
2505m
2720m
2845m
2915m
2825m
2890m
2945m
2805m
2285m
Base
clouds
——
1645m
1795m
1945m
2108m
2220m
2295m
2370m
2458m
2545m
2558m
2432m
3600m
↘
52
↘
51
↘
50
↘
48
↘
45
↘
43
↘
44
↘
46
↘
47
↘
47
↘
46
↘
45
↘
45
3400m
↘
46
↘
46
↘
46
↘
45
↘
43
↘
42
↘
43
↘
44
↘
45
↘
44
↘
44
↘
43
↘
43
3200m
↘
40
↘
41
↘
41
↘
41
↘
41
↘
42
↘
42
↘
42
↘
42
↘
41
↘
41
↘
41
↘
41
3000m
↘
37
↘
38
↘
38
↘
39
↘
39
↘
40
↘
39
↘
39
↘
38
↘
38
↘
37
↘
37
↘
38
2800m
↘
35
↘
35
↘
36
↘
37
↘
37
↘
37
↘
36
↘
35
↘
34
↘
33
↘
34
↘
34
↘
35
2600m
↘
33
↘
32
↘
34
↘
34
↘
35
↘
35
↘
34
↘
31
↘
30
↘
29
↘
30
↘
30
↘
31
2400m
↘
31
↘
30
↘
32
↘
32
↘
33
↘
33
↘
31
→
28
→
26
→
25
→
26
→
27
→
28
2200m
↘
28
→
27
↘
29
↘
30
→
31
→
30
→
28
→
24
→
22
→
21
→
22
→
23
→
24
2000m
→
27
→
25
→
28
→
28
→
29
→
28
→
25
→
21
→
19
→
18
→
19
→
20
→
21
1800m
→
26
→
26
→
29
→
29
→
27
→
26
→
23
→
20
→
19
→
18
→
18
→
19
→
20
1600m
→
25
→
26
→
31
→
29
→
26
→
23
→
21
→
19
→
18
→
18
→
18
→
18
→
18
1400m
→
22
→
23
→
26
→
26
→
24
→
22
→
20
→
19
→
18
→
17
→
17
→
17
→
17
1200m
→
17
→
18
→
20
→
21
→
22
→
22
→
20
→
19
→
17
→
17
→
17
→
17
→
16
1000mLAUNCH
→
12
→
13
→
13
→
15
→
18
→
20
→
19
→
17
→
15
→
15
→
15
→
15
→
13
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 77h 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.