Flying not recommended

Chasseral Croix N — 1539m

Jura · Orientation N, NW
25%
Local flying
Best window: No clear local window
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 No clear local windowXC 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
952 m
29.6 km
Precipitation risk
0.2 mm/h
light showers possible
Flying not recommended

Chasseral Croix N — 1539m

Jura · Orientation N, NW

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Hourly windows

2026-05-04 · Local flying
6h
🌙
NIGHT
7h
⛅
NO-GO
tailwind
8h
⛅
NO-GO
tailwind
9h
⛅
NO-GO
tailwind
10h
⛅
NO-GO
tailwind
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
☁️
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.6h7h8h9h10h11h12h13h14h15h16h17h18h
Top
BLH
——
1604m
1744m
1899m
2069m
2229m
2349m
2389m
2334m
2204m
2029m
1839m
Base
clouds
——
1789m
1939m
2177m
2402m
2501m
2539m
2576m
2602m
2639m
2589m
2414m
3600m
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41
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40
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41
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3400m
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42
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3200m
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42
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3000m
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42
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2800m
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40
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40
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44
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2600m
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37
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40
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42
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39
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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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40
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38
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36
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34
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2200m
↗
32
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34
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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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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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31
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30
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27
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25
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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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26
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24
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23
1400m
↗
19
↑
19
↑
19
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19
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20
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23
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25
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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 20:08
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.