ECMWF ensemble mean for May 6 projects robust upper-level ridging over Central Europe, with 850 hPa geopotential height anomalies firmly positive. This synoptic pattern favors significant warm air advection from the southwest. Surface isotherms consistently push into the +22°C threshold due to strong insolation under clear skies and a potential Föhn effect exacerbating local warming. Model consensus on this setup is high. 90% YES — invalid if the 500 hPa trough axis shifts eastward, introducing polar maritime air.
ECMWF ensemble mean for May 6 projects robust upper-level ridging over Central Europe, with 850 hPa geopotential height anomalies firmly positive. This synoptic pattern favors significant warm air advection from the southwest. Surface isotherms consistently push into the +22°C threshold due to strong insolation under clear skies and a potential Föhn effect exacerbating local warming. Model consensus on this setup is high. 90% YES — invalid if the 500 hPa trough axis shifts eastward, introducing polar maritime air.
