Marginal conditions

Niesen S — 2215m

Imported · Orientation SE, S, SW · 180°
35%
Local flying
Best window: 6h — 9h
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 6h — 9hXC window No clear XC window
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Launch wind
4 km/h
E · 86°
Gust spread
21 km/h
rough launch feel
Lift quality
0.1 m/s
0/5 climb support
Cloud base
1120 m
43.1 km
Precipitation risk
0.3 mm/h
light showers possible
Marginal conditions

Niesen S — 2215m

Imported · Orientation SE, S, SW · 180°

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Hourly windows

2026-05-04 · Local flying
6h
🌙
NIGHT
7h
☁️
GO
8h
☁️
GO
9h
☁️
GO
10h
☁️
MARGINAL
11h
☁️
MARGINAL
12h
☁️
MARGINAL
13h
☁️
MARGINAL
14h
☁️
MARGINAL
15h
🌦
NO-GO
tailwind
16h
🌦
NO-GO
tailwind
17h
🌦
NO-GO
tailwind
18h
🌦
NO-GO
tailwind
19h
🌦
NO-GO
tailwind
20h
🌦
NO-GO
tailwind
Best window: 6h — 9h
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
——
2355m
2415m
2495m
2590m
2670m
2730m
2745m
2705m
2625m
2520m
2405m
Base
clouds
——
2628m
2753m
2928m
3140m
3328m
3502m
3578m
3503m
3365m
3140m
2865m
3600m
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3400m
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3200m
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3000m
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11
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2800m
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10
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9
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2600m
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9
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9
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9
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10
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10
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10
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9
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8
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8
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9
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←
9
2400m
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8
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8
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8
2200mLAUNCH
↖
6
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7
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7
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7
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7
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7
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6
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6
←
6
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6
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7
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7
↙
7
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 12:39
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.