Αetheria Open 2025 Weather Forecast for Aug 3rd 2025
Summary of the Day forecast "High Instability and weak thermals below the inversion"
- Similar day with unstable conditions starting at 13.00h
- Humidity drops by 10% close to the ground. This will create very high cloud base and more organized thermals close to the ground
- 3 cycles of clouds, after the 3rd conditions drops rapidly after 16.00 - earlier than Saturday.
- Early (before 15.00) posssiblility for showers at Vermio and Olympos
- Not significant South wind at the lower level <5kph
- Above the inversion of 2000, there is SW wind.
- Initial cloudbase at 2500m, later at 3300+m
- decreased coverage above Grevena in the South and in the valley middle
- Convergene from Vogatsiko to Nestorio at the north of the valley
- Average Thermals +3, better above 1500m, and more organized lower.
- After 16.00 conditions drop rapidly (earlier)
Barometer & trend: increases 1mb
Temperature range DT: 22-33 = 11 C hotter and less contrast
Dewpoint / time: 7,5 C
Humidity: drops 10% lower and increases higher, meaning more cloud coverage.
Cloud base: 3000-3300m, higher to the north
Cloud top: +2500m , higher than yesterday
Cloud types: Cu with spreadout, Cu Congestus , Shower clouds above Vermio mnt after 15.00h
Cloud coverage: variable up to 80%
Average Thermal: <+3 m/s stronger but smoother
Peak Thermal at Altitude: 1000m/+2,7m/s , 1500m/+4m/s , 2000m/ +3,8m/s
Top of Thermals: 2800 m at 16.00h
Best Thermal Zone: 1800-2500m
Inversions: 1500m, 2500 shear
Wind Gust: 20-25 kph at 15.00h,
Ground average wind: S <5 kph
600m: S < 5 kph
1200m: S < 5 kph
1800m: S<5 kph
2400m: SW<10 kph
3000m: SW 10 kph
3600m: SW 10 kph
Day starts thermals at 13.00h same time
Conditions start declining after 16.00h earlier
Best conditions Period 14.00-16.00h
Peak thermal conditions at 16.00h 1 h earlier than Saturday
Task XC duration 2 h
Calculated XC speed 35 kph
Potential Day task 70 km max
Rain possibility 0%
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