Flying not recommended

Chasseral sud — 1569m

Jura · Orientation SE
25%
Local flying
Best window: 6h — 10h
Local flying is limited first by wind gusts too strong. Outside of that constraint, some periods still look flyable, but the day is not broadly comfortable.
Local window 6h — 10hXC window No clear XC windowWatch-out: Wind gusts too strong
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Launch wind
15 km/h
SW · 210°
Gust spread
50 km/h
rough launch feel
Lift quality
0.3 m/s
2/5 climb support
Cloud base
950 m
29.6 km
Precipitation risk
0.2 mm/h
light showers possible
Flying not recommended

Chasseral sud — 1569m

Jura · Orientation SE

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Hourly windows

2026-05-04 · Local flying
6h
🌙
NIGHT
7h
⛅
GO
8h
⛅
GO
9h
⛅
GO
10h
⛅
GO
11h
⛅
MARGINAL
12h
☁️
NO-GO
13h
☁️
NO-GO
14h
☁️
NO-GO
gusts
15h
☁️
NO-GO
gusts
16h
☁️
NO-GO
gusts
17h
☁️
NO-GO
gusts
18h
☁️
NO-GO
tailwind
19h
☁️
NO-GO
tailwind
20h
☁️
NO-GO
Best window: 6h — 10h
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
——
1634m
1774m
1929m
2099m
2259m
2379m
2419m
2364m
2234m
2059m
1869m
Base
clouds
——
1819m
1969m
2207m
2431m
2532m
2569m
2594m
2632m
2669m
2619m
2432m
3600m
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41
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40
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41
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41
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41
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3400m
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42
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41
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42
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42
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43
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46
3200m
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42
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3000m
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42
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42
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45
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2800m
↗
40
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40
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41
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44
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44
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41
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40
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40
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2600m
↗
37
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38
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40
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42
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43
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41
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39
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38
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37
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37
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38
2400m
↗
34
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36
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37
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39
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41
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42
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40
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38
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36
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34
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34
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35
2200m
↗
32
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34
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35
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37
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40
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40
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39
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36
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34
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31
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30
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29
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31
2000m
↗
29
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32
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33
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35
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38
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39
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38
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35
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32
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29
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26
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25
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28
1800m
↗
26
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28
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29
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30
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32
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32
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32
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31
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30
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27
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25
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24
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26
1600mLAUNCH
↗
23
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24
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24
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25
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25
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25
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27
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28
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28
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26
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24
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23
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23
1400m
↗
19
↑
19
↑
19
↑
19
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20
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21
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23
↗
25
↗
26
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24
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22
→
22
→
21
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 20:09
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.