Acceptable conditions

Gempen — 645m

Jura · Orientation S
60%
Local flying
Best window: 6h — 11h
Local flying reaches 60% because the launch setup looks mostly workable, while lift quality and timing are what keep the score from climbing higher.
Local window 6h — 11hXC window No clear XC window
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Launch wind
8 km/h
SW · 218°
Gust spread
35 km/h
rough launch feel
Lift quality
0.8 m/s
4/5 climb support
Cloud base
1157 m
30.6 km
Precipitation risk
0.4 mm/h
light showers possible
Acceptable conditions

Gempen — 645m

Jura · Orientation S

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Hourly windows

2026-05-04 · Local flying
6h
🌙
NIGHT
7h
☁️
GO
8h
☁️
GO
9h
⛅
GO
10h
⛅
GO
11h
⛅
GO
12h
⛅
MARGINAL
13h
⛅
NO-GO
14h
⛅
NO-GO
15h
☁️
NO-GO
16h
☁️
NO-GO
17h
☁️
NO-GO
18h
🌤
MARGINAL
19h
🌤
GO
20h
🌤
GO
Best window: 6h — 11h
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
——
695m
1050m
1180m
1325m
1455m
1540m
1565m
1505m
1375m
1205m
1030m
Base
clouds
——
945m
1107m
1345m
1595m
1795m
1970m
2045m
2007m
1858m
1757m
1720m
3600m
↗
36
↗
39
↗
41
↗
41
↗
41
↗
41
↗
43
↗
45
↗
46
↗
47
↗
48
↗
48
↗
48
3400m
↗
37
↗
40
↗
42
↗
42
↗
42
↗
43
↗
44
↗
45
↗
47
↗
47
↗
47
↗
48
↗
47
3200m
↗
39
↗
41
↗
43
↗
44
↗
44
↗
45
↗
46
↗
46
↗
47
↗
47
↗
47
↗
47
↗
47
3000m
↗
40
↗
41
↗
43
↗
44
↗
44
↗
45
↗
45
↗
46
↗
46
↗
46
↗
46
↗
46
↗
46
2800m
↗
38
↗
40
↗
41
↗
42
↗
42
↗
43
↗
43
↗
43
↗
43
↗
44
↗
44
↗
45
↗
44
2600m
↗
37
↗
38
↗
39
↗
40
↗
40
↗
40
↗
40
↗
40
↗
41
↗
42
↗
42
↗
43
↗
42
2400m
↗
35
↗
37
↗
38
↗
38
↗
38
↗
38
↗
38
↗
38
↗
38
↗
39
↗
41
↗
41
↗
41
2200m
↗
34
↗
35
↗
36
↗
36
↗
35
↗
36
↗
35
↗
35
↗
35
↗
37
↗
39
↗
40
↗
39
2000m
↗
33
↗
34
↗
34
↗
34
↗
33
↗
33
↗
33
↗
32
↗
33
↗
34
↗
37
↗
38
↗
37
1800m
↗
28
↗
29
↗
29
↗
30
↗
30
↗
30
↗
29
↗
27
↗
27
↗
29
↗
32
↗
35
↗
34
1600m
↗
22
↗
23
↗
24
↗
26
↗
27
↗
27
↗
25
↗
22
↗
21
↗
23
↗
28
↗
31
↗
31
1400m
↗
18
↗
19
↗
20
↗
21
↗
23
↗
24
↗
22
↗
19
↗
18
↗
19
→
23
→
26
→
26
1200m
↗
15
↗
15
↗
15
↗
16
↗
18
↗
19
↗
18
↗
17
↗
17
↗
17
→
18
→
20
→
20
1000m
↗
12
↑
12
↑
12
↑
12
↑
13
↑
14
↗
15
↗
16
↗
16
↗
15
→
14
→
14
→
14
800m
↑
11
↑
12
↑
13
↑
12
↑
11
↑
10
↗
11
↗
13
↗
16
↗
15
→
13
→
13
→
13
600mLAUNCH
↖
9
↖
11
↖
12
↖
11
↑
10
↑
9
↗
10
↗
12
↗
14
→
14
→
12
→
12
→
12
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 18:29
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.