Burg Altpernstein - Hirschwaldstein
📍 Upper Austria , Politischer Bezirk Kirchdorf an der Krems · Nearest city: Micheldorf in Oberoesterreich (2 km)
54 XC score / 100 · takeoff at 955 m · 📍 View on map
Coordinates and external links
47.88500, 14.16280Forecast next days
Updated: 2026-04-21 01:28 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Flyable day, decent conditions, cloud base ~776 m, wind 13 km/h.
base ~776m · wind 13 km/hMarginal conditions, cloud base ~1393 m, wind 10 km/h.
base ~1393m · wind 10 km/hMarginal conditions, cloud base ~1847 m, wind 19 km/h.
base ~1847m · wind 19 km/hComposite flyability score (CAPE + LI + wind + precip + low clouds). Cross-check with local pilots before flying.
Detailed hourly weather
2026-04-21⚠️ Marginal · peak 55 at 8h
- High cloud suck (93/100) — base below freezing with CU
| 08 55 ☁️⚠️ | 09 55 ☁️⚠️ | 10 55 ☁️⚠️ | 11 55 ☁️⚠️ | 12 55 ☁️⚠️ | 13 50 ☁️⚠️ | 14 55 ☁️⚠️ | 15 55 ☁️⚠️ | 16 55 ☁️⚠️ | 17 50 ☁️⚠️ | 18 50 ☁️⚠️ | 19 55 ☁️⚠️ | 20 55 ☁️⚠️ |
Peak 8h: CAPE 40 J/kg · LI 3.8 · BL top 230 m · w* 0.0 m/s · cloud base 1367 m · 0°C at 1460 m · Pro score 44/100 · sun 24° over slope
Hourly flyability (0–100). ⛈️ = storm risk · ☁️⚠️ = cloud suck · 🏔️ = active ridge lift. CAPE = convective energy, LI = stability, BL top = thermal ceiling, w* = estimated dry thermal velocity. Source: Open-Meteo (ECMWF/GFS/ICON blend model).
Estimated vertical profile (Sounding)
Reference time: 08:00 (peak of the day)
Surface T: 4.4°C · Td: 1.1°C
LCL (cloud base): 412 m
BL top: 230 m
0°C level: 1460 m
Approximate profile from surface variables + synoptic levels. Red lines = temperature, dashed blue = dew point. Orange bands = detected inversions.
🌬 Daily wind (next days)
Daily summary (10m wind). Full hour × altitude chart is being added progressively.
Takeoff orientations
Green = good orientation · Yellow = possible · Gray = not suitable
Why this site has thermal potential
| Factor | Value | Interpretation |
|---|---|---|
| Hotspot density (5 km) | 8 | High |
| Avg thermal probability | 0.83 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.30 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Upcoming competitions in this country
- PWCA Italy Gemona 2026 · 2026-07-25 – 2026-08-01 · PWCA
Copa del Mundo en Gemona del Friuli, Italia
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Kronbauer (32) · Herndleck (51) · Hinterstoder (47) · Landeplatz Ternberg (5) · Sender Kleinerberg (68) · Grünberg (41)