Marginal conditions

Chaux Ronde — 1950m

Imported · Orientation SW · 225°
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
8 km/h
W · 288°
Gust spread
43 km/h
rough launch feel
Lift quality
0.0 m/s
0/5 climb support
Cloud base
739 m
35.2 km
Precipitation risk
Dry
no signal
Marginal conditions

Chaux Ronde — 1950m

Imported · Orientation SW · 225°

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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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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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19h
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20h
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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
——
1960m
1965m
2505m
2665m
2770m
3025m
3150m
3135m
3035m
2870m
2595m
Base
clouds
——
2663m
2612m
2512m
2463m
2525m
2662m
2775m
2900m
2987m
3062m
3025m
3600m
↘
43
↘
42
↘
41
↘
39
↘
37
↘
34
↘
32
↘
30
↘
28
↘
26
↘
26
↘
25
↘
24
3400m
↘
37
↘
35
↘
34
↘
33
↘
32
↘
30
↘
27
↘
25
↘
23
↘
21
↘
21
↘
21
↘
20
3200m
↘
30
↘
27
↘
28
↘
27
↘
26
↘
25
↘
23
↘
20
↘
18
↘
16
↘
17
↓
16
↘
16
3000m
↘
25
↘
23
↘
24
↘
23
↘
23
↘
22
↘
20
↘
17
↘
15
↘
14
↘
15
↘
15
↘
14
2800m
↘
22
↘
20
↘
21
↘
20
↘
20
↘
19
↘
17
↘
15
↘
13
↘
12
↘
13
↘
14
↘
13
2600m
↘
18
↘
17
↘
17
↘
17
↘
18
↘
17
↘
15
↘
12
↘
11
↘
11
↘
12
↘
13
↘
12
2400m
↘
14
↘
14
↘
14
↘
14
↘
15
↘
14
↘
12
↘
10
↘
9
↘
9
↘
11
↘
12
↘
11
2200m
↘
10
↘
11
↘
11
↘
11
↘
12
↘
12
↘
10
↘
8
↘
7
↘
7
↘
9
↘
11
↘
10
2000mLAUNCH
↘
7
↘
9
↘
8
↘
9
↘
10
↘
10
↘
8
↘
6
↘
5
↘
6
↘
9
↘
10
↘
10
1800m
↘
6
↘
8
↘
7
↘
7
↘
9
↘
10
↘
8
↘
7
→
6
↘
7
↘
9
↘
10
↘
9
1600m
1400m
1200m
1000m
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.