|| The time shown in the forecasts is CET Summertime (UTC+2).
Local summertime in Norway, Sweden, Denmark, Germany, Belgium, Holland,
| Thermal height
|| Thermal height is written on the map in 100-meters levels above
sea level (MSL).
Should be read as minimum thermalling height. Cu may give more thermalling
| Flight distance
Flight distance calculations for the whole day.
Calculations starts when thermal reaches 1000m AGL and thermal strength over 1m/s and stops when below the same limits. This means that a local 30 minute shower will force the forecast to a "landing" at that area but the x-country pilot might be able to fly around the same shower and continue the flight.
Calculated for a 15m glider with water ballast and adjusted for thermal strength, thermal height, convergence and wind.
Note: The calculations have about 30 minutes spare time build in and the forecast should be read as "realistic flight distance". This means that the experienced x-country pilot can quite easily plan a task that spans over longer distances than indicated here, based on weather experiences and local experiences.
- No colors: Difficult to do cross country flights.
- Blue: 100 km
- Green: 200 km
- Yellow: 300 km
- Orange: 400 km
- Red: 500 km
- Purple: > 600 km
| Thermal strength
|| Thermal strength is shown by background colors on the map:
- No colors: No working thermals
- Blue: < 1 m/s, weak thermals, stay
high if you can.
- Green: 1-2 m/s. Good enough for x-country
- Yellow: 2-2.5 m/s. Good weather.
- Orange: 2.5-3 m/s. Great thermals.
- Red: > 3m/s. Very good thermals. Take
a day off and soar.
- Purple: > 4m/s. If you didn't fly when red, now is the time...
- Orange digits can hint
about enhanced climb lines
- Blue digits: tendency to lower climb
than background color suggests.
| Cu clouds
|| If Cu is formed this is shown with circles around the thermal height:
- No Circle (or squares): Dry thermals.
- Less than half: Probably dry thermals, maybe some small Cu..
- More than half: Probably Cu but not fully developed.
- Full circle: Nice Cu.
Direction and strength is shown by wind arrows.
There are 3 selectable indications:
- Surface wind, wind at 10 meters height.
- Average wind, average wind below the boundary level.
- Top wind: wind at the top of the boundary level.
Strength in km/h.
- 10 km/h per bar on the arrow (or about 5 knots/). 2 opposite bars
(1 angle) = 10 knots.
| Cloud cover
|| High and medium high clouds (solar radiation screen) is only shown
if more than 4/8.
- 4/8 - 7/8 cloud cover: grey dots, growing with cloud coverage.
- > 7/8 cloud cover: dark grey areas.
|| Temperature at surface level (2 meters) is indicated by red (+C)
or blue (-C) digits scattered on map.
|| Precipitation is marked by blue dots when more than 0.5 mm/h; dots
growing with intensity.
|| The resolution of the calculations is 12 km.
Thermal height and strength is shown every 12 km on the detailed maps
and every 48 km on the "overview" (but the colors still use 12 km).
| Forecast updates
|| Forecasts are ready around 06.00 (6 am).
The forcast for tomorrow (and the day after in the apps for iOS and
Android) is updated 19.00 (7 pm).
At the top of every map there is a timestamp to show when the calculations
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