Flying not recommended

Brienzer Rothorn — 2255m

Imported · Orientation S · 180°
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
Save this forecast to your account for quick access later.
Launch wind
8 km/h
NW · 312°
Gust spread
32 km/h
rough launch feel
Lift quality
0.5 m/s
4/5 climb support
Cloud base
1036 m
40.9 km
Precipitation risk
0.2 mm/h
light showers possible
Flying not recommended

Brienzer Rothorn — 2255m

Imported · Orientation S · 180°

Save this forecast to your account for quick access later.

Hourly windows

2026-05-04 · Local flying
6h
🌙
NIGHT
7h
☁️
NO-GO
low vis
8h
☁️
NO-GO
low vis
9h
🌤
MARGINAL
10h
🌤
MARGINAL
11h
🌤
NO-GO
tailwind
12h
🌦
NO-GO
tailwind
13h
🌦
NO-GO
tailwind
14h
🌦
NO-GO
tailwind
15h
☁️
NO-GO
tailwind
16h
☁️
NO-GO
tailwind
17h
☁️
NO-GO
tailwind
18h
🌦
NO-GO
19h
🌦
MARGINAL
20h
🌦
MARGINAL
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
——
2315m
2400m
2505m
2620m
2735m
2815m
2855m
2835m
2775m
2685m
2585m
Base
clouds
——
2930m
3055m
3280m
3405m
3393m
3305m
3218m
3217m
3218m
3168m
3030m
3600m
↗
12
↗
14
↗
16
↗
18
↗
20
↗
22
↗
23
↗
24
↗
25
↗
26
↗
26
↗
25
↗
24
3400m
↗
11
↗
12
↗
14
↗
16
↗
18
↗
19
↗
20
↗
23
↑
25
↑
25
↗
24
↗
23
↗
22
3200m
↗
10
↗
11
↗
12
↗
13
↗
16
↗
17
↗
18
↑
21
↑
24
↑
24
↑
23
↑
21
↗
19
3000m
↗
8
↗
9
↗
10
↗
11
↗
14
↗
14
↗
15
↑
19
↑
22
↑
23
↑
21
↑
19
↗
17
2800m
↗
7
↗
8
↗
9
↗
10
↗
12
↗
12
↗
13
↗
16
↗
20
↗
20
↗
18
↗
17
↗
15
2600m
↑
6
↑
6
↑
7
↑
8
↗
10
↗
10
↗
10
→
14
↗
17
↗
17
↗
16
↗
15
↗
14
2400m
↑
5
↑
5
↑
6
↑
7
↑
8
↗
8
↗
7
→
11
→
14
→
14
→
13
→
12
→
12
2200mLAUNCH
↑
3
↑
4
↖
5
↑
5
↑
7
↑
6
↗
5
↘
8
↘
11
→
12
→
10
→
10
→
10
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

Sources: Open-Meteo (AROME 1.3km, ICON-D2 2km) · 2026-05-04 · Data fetched on 28 Apr at 20:08
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.