Flying not recommended

Brienzer Rothorn (SO) — 2230m

Imported · Orientation SE · 135°
25%
Local flying
Best window: No clear local window
Local flying is limited first by tailwind / strong back-cross at launch. Outside of that constraint, some periods still look flyable, but the day is not broadly comfortable.
Local window No clear local windowXC window No clear XC windowWatch-out: Tailwind / strong back-cross at launch
Forecast-based estimate — not a flight clearance. Always check live conditions and assess on site.
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Launch wind
7 km/h
W · 256°
Gust spread
29 km/h
rough launch feel
Lift quality
0.1 m/s
0/5 climb support
Cloud base
687 m
37.1 km
Precipitation risk
Dry
no signal
Flying not recommended

Brienzer Rothorn (SO) — 2230m

Imported · Orientation SE · 135°

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Hourly windows

2026-08-18 · Local flying
6h
🌙
NIGHT
7h
☁️
NO-GO
tailwind
8h
⛅
NO-GO
tailwind
9h
⛅
NO-GO
tailwind
10h
⛅
NO-GO
tailwind
11h
⛅
NO-GO
tailwind
12h
⛅
MARGINAL
13h
⛅
MARGINAL
14h
⛅
MARGINAL
15h
☁️
MARGINAL
16h
☁️
NO-GO
tailwind
17h
☁️
NO-GO
tailwind
18h
⛅
NO-GO
tailwind
19h
⛅
NO-GO
tailwind
20h
⛅
NO-GO
tailwind
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
——
2250m
2310m
2610m
3015m
3235m
3300m
3380m
3435m
3445m
3340m
3020m
Base
clouds
——
2543m
2605m
2705m
2780m
2868m
2918m
2967m
3068m
3118m
3155m
3092m
3600m
↘
48
↘
49
↘
48
↘
47
↘
45
↘
43
↘
42
↘
42
↘
40
↘
37
↘
34
↘
32
↘
33
3400m
↘
43
↘
44
↘
43
↘
42
↘
40
↘
39
↘
38
↘
37
↘
36
↘
33
↘
30
↘
28
↘
29
3200m
↘
38
↘
39
↘
38
↘
37
↘
36
↘
35
↘
34
↘
33
↘
31
↘
28
↘
25
↘
23
↘
25
3000m
↘
34
↘
35
↘
35
↘
34
↘
32
↘
31
↘
30
↘
30
↘
28
↘
25
↘
22
↘
21
↘
22
2800m
→
32
→
32
→
32
↘
31
↘
29
→
28
→
27
→
26
→
25
→
23
→
20
→
19
→
20
2600m
→
29
→
30
→
29
→
28
→
27
→
25
→
24
→
23
→
22
→
20
→
18
→
17
→
18
2400m
→
26
→
27
→
26
→
25
→
24
→
22
→
21
→
20
→
19
→
18
→
16
→
16
→
16
2200mLAUNCH
→
23
→
24
→
24
→
22
→
21
→
19
→
18
↗
17
↗
16
↗
15
→
14
→
14
→
14
2000m
1800m
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 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.