Marginal conditions

Brandberg — 1056m

Jura · Orientation SE, S

40%

Local flying

Best window: No clear local window

Local flying reaches 40% because the launch setup looks mostly workable, while lift quality and timing are what keep the score from climbing higher.

Local window No clear local windowXC window No clear XC window

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Launch wind

16 km/h

W · 283°

Gust spread

43 km/h

rough launch feel

Lift quality

0.3 m/s

2/5 climb support

Cloud base

607 m

33.6 km

Precipitation risk

Dry

no signal

Hourly windows

2026-05-20 · Local flying

⛅

NO-GO

gusts

🌤

MARGINAL

⛅

MARGINAL

☁️

MARGINAL

10h

☁️

MARGINAL

11h

☁️

NO-GO

12h

☁️

MARGINAL

13h

☁️

MARGINAL

14h

⛅

MARGINAL

15h

⛅

MARGINAL

16h

⛅

MARGINAL

17h

⛅

MARGINAL

18h

⛅

MARGINAL

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.	6h	7h	8h	9h	10h	11h	12h	13h	14h	15h	16h	17h	18h
Top BLH	—	—	1526m	1696m	1931m	2161m	2391m	2431m	2271m	2391m	2411m	2246m	1981m
Base clouds	—	—	1256m	1456m	1469m	1456m	1456m	1731m	1731m	1869m	1931m	1819m	1931m
3600m	→ 43	→ 44	→ 40	→ 40	→ 39	→ 41	→ 41	→ 41	→ 41	→ 38	→ 35	→ 34	→ 32
3400m	→ 42	→ 44	→ 38	→ 39	→ 37	→ 39	→ 40	→ 39	→ 39	→ 37	→ 34	→ 31	→ 30
3200m	→ 42	→ 44	→ 37	→ 39	→ 35	→ 37	→ 39	→ 37	→ 38	→ 36	→ 32	→ 28	→ 27
3000m	→ 42	→ 44	→ 37	→ 38	→ 34	→ 35	→ 37	→ 35	→ 37	→ 35	→ 32	→ 28	→ 26
2800m	→ 42	→ 45	→ 38	→ 38	→ 34	→ 34	→ 35	→ 34	→ 36	→ 34	→ 31	→ 29	→ 28
2600m	→ 43	→ 45	→ 39	→ 37	→ 34	→ 33	→ 33	→ 32	→ 35	→ 34	→ 31	→ 30	→ 29
2400m	→ 43	→ 45	→ 40	→ 37	→ 34	→ 32	→ 31	→ 31	→ 34	→ 33	→ 31	→ 30	→ 30
2200m	→ 43	→ 46	→ 40	→ 36	→ 34	→ 30	→ 29	→ 29	→ 33	→ 32	→ 30	→ 31	→ 32
2000m	→ 44	→ 46	→ 41	→ 36	→ 34	→ 29	→ 27	→ 28	→ 32	→ 31	→ 30	→ 32	→ 33
1800m	→ 44	→ 47	→ 42	→ 35	→ 35	→ 28	→ 25	→ 26	→ 31	→ 30	→ 30	→ 33	→ 34
1600m	→ 45	→ 47	→ 43	→ 35	→ 35	→ 27	→ 23	→ 25	→ 30	→ 29	→ 30	→ 34	→ 36
1400m	→ 39	→ 41	→ 38	→ 31	→ 31	→ 24	→ 21	→ 23	→ 27	→ 27	→ 28	→ 31	→ 33
1200m	→ 33	→ 34	→ 31	→ 28	→ 27	→ 21	→ 19	→ 21	→ 25	→ 25	→ 25	→ 28	→ 30
1000mLAUNCH	→ 27	→ 27	→ 25	→ 24	→ 23	→ 18	→ 17	→ 18	→ 22	→ 23	→ 23	→ 25	→ 27
800m
600m
400m
200m

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) · 2026-05-20 · Data fetched on 19 May at 22:44
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.