Weather forecast for Sunday Aug18th 2024 - Aetheria pre World Cup and 33rd Hellenic Championship

 

Summary of the day - General Weather

The low pressure of the South Greece and Romania, combine to create a frontal zone in our area with instability, and Thunderstorms.

These rain clouds will develop from the North West.

Between 12.00 and 13.00 there will be a cirrus layer cloud that may delay the evolution of the vertical overdevelopment clouds but when it clears we will have many Cu clouds in the valley.

Starting from the west mountains and from Askio we will see Congestus, showers, CBs and 

thunderstorms that will increase coverage to 100% around 13.00h 

We are in a marginal zone for this front ant there is a possibility for this to pass from Kastoria and let us fly to the south of Siatista.

The day will make 2 waves, first before cirrus with thermals to 1700m and a second wave after cirrus, with climbs up to 2400m and instability

Details

Barometer at 1003 decrease 2mb and further drops at 17.00h

Temperatures

Min Τ 23 Max Τ36  ΔΤ 13 C unstable conditions

Dewpoint between 6 and 8 C, but changes after 15.00 as humid air will enter the valley from the northWest

Clouds Forecast

Cloudbase initially 2300 at take off, later drops to 1800m at 15.00

At Kastoria the Cloudbase will be 2100m, and will be higher to the south reaching 2700m at Grevena.

cloud tops +6000-8000m in the unstable areas from the NorthWest and above Askio mountain

Cloud coverage expected 100% at 13.00h

Cloud Types cirrus first, Cu, Cu Con, CBs

Inversion Levels 800m, 1700m

Thermals Analysis

Thermals at levels +4m above 1000m at siatista, later less

Top of Lift 1700m at 12.00 and 2400m after 15.00

Zone Ideal between 1000 and 1700m, later 1300-23--m after 15.00h

Winds at 15.00

Wind Gust 20+kph

from Ground to 1200m SSE< 10kph

from 1800m and above, South 15-18kph turning to SSW with altitude

XC Speed 22kph

Start of the Day 12.00

decline day after 15.00

Duration of XC 2h

Potential Task 45 km