Flying not recommended

Ballon d'Alsace — 1247m

Vosges · Orientation S, SW
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
16 km/h
SW · 231°
Gust spread
55 km/h
rough launch feel
Lift quality
0.3 m/s
2/5 climb support
Cloud base
1004 m
17.5 km
Precipitation risk
0.3 mm/h
light showers possible
Flying not recommended

Ballon d'Alsace — 1247m

Vosges · Orientation S, SW

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Hourly windows

2026-05-04 · Local flying
6h
🌙
NIGHT
7h
⛅
GO
8h
⛅
GO
9h
☁️
GO
10h
☁️
GO
11h
☁️
NO-GO
gusts
12h
🌦
NO-GO
gusts
13h
🌦
NO-GO
gusts
14h
🌦
NO-GO
gusts
15h
☁️
NO-GO
gusts
16h
☁️
NO-GO
gusts
17h
☁️
MARGINAL
18h
☁️
GO
19h
☁️
GO
20h
☁️
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
——
1742m
1472m
1552m
1657m
1762m
1847m
1882m
1862m
1807m
1727m
1642m
Base
clouds
——
1872m
2010m
2160m
2272m
2285m
2260m
2222m
2260m
2297m
2297m
2260m
3600m
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46
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47
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48
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49
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51
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51
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51
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50
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49
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48
3400m
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48
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53
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52
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51
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3200m
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51
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54
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52
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51
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3000m
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52
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54
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55
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55
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55
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53
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52
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48
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46
2800m
↗
51
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53
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54
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54
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53
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52
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51
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50
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49
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48
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44
2600m
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51
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52
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52
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51
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50
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49
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48
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48
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48
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44
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42
2400m
↗
50
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50
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51
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49
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48
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46
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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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42
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40
2200m
↗
49
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49
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49
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47
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45
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44
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44
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45
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45
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44
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42
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40
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38
2000m
↗
48
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48
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47
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45
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42
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41
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42
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44
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44
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43
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40
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38
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36
1800m
↗
45
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46
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46
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45
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42
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40
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39
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39
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38
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37
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36
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34
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32
1600m
↗
41
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44
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46
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44
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42
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39
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37
↗
34
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32
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31
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31
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30
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28
1400m
↗
37
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40
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42
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41
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40
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37
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34
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30
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28
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27
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28
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27
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26
1200mLAUNCH
↗
32
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34
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35
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35
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35
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34
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31
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28
↗
26
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26
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26
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26
↗
24
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 20:07
⚠️ This report is informational only. The final decision to fly always rests with the pilot on site.