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SkyStefs weather forecast

 

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Interactive weather

 
7-day meteogram forecast by selecting a location via a cross


Source: Wetterzentrale
 

 

 
Legend of 1-15 days forecast (Ensembles of GFS)

Ensemble consists 52 runs (or members) =1 operational run, 1 undisturbed control run but with a resolution of twice as much as operational run, 50 slightly disturbed runs based on operational run but also with a resolution of twice as much as the operational run.

 

Depicted are one control run and 10 slightly disturbed members.

Upper values are forecasted temperatures at 850 hPa in įC (left column)
Bold red line=30 years mean value
Bold green line = operational run
Bold blue line=control run
Bold grey line=mean value of the 11 depicted lines
Other colored thin lines=10 other (slightly disturbed) runs


Bottom values are forecasted amounts of precipitation in mm (right column)
Bold green line = operational run
Bold blue line=control run
Bold grey line=mean value of the 11 depicted lines
Other colored thin lines=10 other (slightly disturbed) runs

 

T850 hPa is useful for forecasting Tmax temperature by adding a certain value (difference Tmax - T850 hPa) depending on season and amount of cloud. 


Source experimental diagram: Alwin Haklander