Marginal conditions

Boécourt — 921m

Jura · Orientation E, SE
38%
Local flying
Best window: 6h — 9h
Local flying reaches 38% because the launch setup looks mostly workable, while lift quality and timing are what keep the score from climbing higher.
Local window 6h — 9hXC window No clear XC window
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Launch wind
12 km/h
W · 249°
Gust spread
43 km/h
rough launch feel
Lift quality
0.4 m/s
2/5 climb support
Cloud base
1402 m
27.5 km
Precipitation risk
0.3 mm/h
light showers possible
Marginal conditions

Boécourt — 921m

Jura · Orientation E, SE

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Hourly windows

2026-05-04 · Local flying
6h
🌙
NIGHT
7h
⛅
GO
8h
⛅
GO
9h
⛅
GO
10h
⛅
MARGINAL
11h
⛅
MARGINAL
12h
☁️
NO-GO
13h
☁️
NO-GO
14h
☁️
NO-GO
tailwind
15h
🌦
NO-GO
tailwind
16h
🌦
NO-GO
tailwind
17h
🌦
NO-GO
tailwind
18h
⛅
NO-GO
tailwind
19h
⛅
NO-GO
tailwind
20h
⛅
NO-GO
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
——
951m
1211m
1336m
1471m
1596m
1686m
1716m
1671m
1561m
1416m
1261m
Base
clouds
——
1408m
1646m
1971m
2296m
2458m
2559m
2509m
2346m
2121m
1921m
1821m
3600m
↗
42
↗
44
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46
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45
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43
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42
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43
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45
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47
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48
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48
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48
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47
3400m
↗
44
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46
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47
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47
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45
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44
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44
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46
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47
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48
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48
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48
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47
3200m
↗
45
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47
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48
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48
↗
46
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45
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45
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46
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47
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48
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48
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48
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47
3000m
↗
46
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47
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48
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48
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47
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46
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45
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45
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45
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46
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48
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48
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46
2800m
↗
45
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46
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47
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46
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46
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45
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44
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43
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43
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44
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2600m
↗
43
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44
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45
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45
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44
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43
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42
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40
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40
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42
2400m
↗
42
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42
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43
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43
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42
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40
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38
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37
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38
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40
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41
2200m
↗
40
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41
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41
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41
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42
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41
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39
↗
35
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34
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35
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37
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39
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39
2000m
↗
39
↗
39
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39
↗
40
↗
41
↗
40
↗
37
↗
33
↗
31
↗
32
↗
34
↗
37
↗
37
1800m
↗
35
↗
35
↗
34
↗
34
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34
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33
↗
31
↗
30
↗
29
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29
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30
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32
↗
32
1600m
↗
31
↗
30
↗
29
↗
28
↗
27
↗
26
↗
26
↗
26
↗
27
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27
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27
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27
↗
28
1400m
↗
26
↗
24
↗
23
↗
22
↗
22
↗
22
↗
22
↗
24
↗
25
→
25
→
24
→
23
→
24
1200m
↗
19
↗
17
↑
16
↗
16
↗
18
↗
20
↗
22
↗
23
→
24
→
23
→
22
→
21
→
20
1000mLAUNCH
↗
12
↑
11
↑
10
↑
11
↗
15
↗
19
↗
21
↗
22
→
23
→
22
→
20
→
18
→
17
800m
↑
8
↑
7
↑
7
↑
9
↗
13
↗
17
↗
19
→
20
→
21
→
20
→
19
→
17
→
15
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 20:07
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.