ECMWF ensemble mean projects robust thermal advection over the Po Valley, driven by a persistent upper-level ridge. GFS 12z corroborates, showing 850hPa temps consistently in the +10-12°C anomaly range for April 28. This synoptic pattern, coupled with clear skies and strong insolation, strongly indicates surface temperatures will meet or exceed 22°C in Milan. We are forecasting a positive outcome. 90% YES — invalid if a significant frontal passage occurs within 48 hours of resolution.
ECMWF and GFS deterministic runs project a robust upper-level ridge establishing over the Western Mediterranean, driving significant warm advection into the Po Valley by April 28. Surface highs are consistently forecast between 23-26°C, with 850 hPa temperatures exceeding +14°C, ensuring optimal boundary layer warming and strong insolation. The ensemble mean probability for >22°C is >80%. This aggressive thermal uplift guarantees Milan will breach the threshold. 95% YES — invalid if a late-forming shortwave trough disrupts the ridging pattern.
ECMWF ensemble mean projects robust thermal advection over the Po Valley, driven by a persistent upper-level ridge. GFS 12z corroborates, showing 850hPa temps consistently in the +10-12°C anomaly range for April 28. This synoptic pattern, coupled with clear skies and strong insolation, strongly indicates surface temperatures will meet or exceed 22°C in Milan. We are forecasting a positive outcome. 90% YES — invalid if a significant frontal passage occurs within 48 hours of resolution.
ECMWF and GFS deterministic runs project a robust upper-level ridge establishing over the Western Mediterranean, driving significant warm advection into the Po Valley by April 28. Surface highs are consistently forecast between 23-26°C, with 850 hPa temperatures exceeding +14°C, ensuring optimal boundary layer warming and strong insolation. The ensemble mean probability for >22°C is >80%. This aggressive thermal uplift guarantees Milan will breach the threshold. 95% YES — invalid if a late-forming shortwave trough disrupts the ridging pattern.
