ECMWF 12z ensemble mean for London indicates 17.2°C. Weak ridge building, strong solar insolation and positive thermal advection are favorable. Boundary layer mixing confirms. 90% YES — invalid if strong cold frontal passage.
ECMWF 12z ensemble mean for London indicates 17.2°C. Weak ridge building, strong solar insolation and positive thermal advection are favorable. Boundary layer mixing confirms. 90% YES — invalid if strong cold frontal passage.