ECMWF and GFS deterministic runs, along with their ensemble means for the Sichuan Basin, firmly indicate a dominant high-pressure ridge and robust warm air advection over Chongqing by April 28. The 850hPa temperature anomaly is projected at +4-6°C above seasonal norms, pushing 850hPa temps into the 12-14°C range. Coupled with minimal cloud cover and prolonged solar insolation, surface heating through efficient boundary layer mixing will be intense. Climatological data for late April in Chongqing shows an average maximum temperature of 22.5°C, providing a strong baseline. All major NWP model outputs consistently forecast a daily maximum well exceeding 21°C, with many pushing into the mid-20s. This isn't a marginal call; synoptic patterns are unequivocally bullish on temperature. Expect 23-25°C. 95% YES — invalid if a major unforecasted cold frontal passage materializes after current model runs.
ECMWF and GFS deterministic runs, along with their ensemble means for the Sichuan Basin, firmly indicate a dominant high-pressure ridge and robust warm air advection over Chongqing by April 28. The 850hPa temperature anomaly is projected at +4-6°C above seasonal norms, pushing 850hPa temps into the 12-14°C range. Coupled with minimal cloud cover and prolonged solar insolation, surface heating through efficient boundary layer mixing will be intense. Climatological data for late April in Chongqing shows an average maximum temperature of 22.5°C, providing a strong baseline. All major NWP model outputs consistently forecast a daily maximum well exceeding 21°C, with many pushing into the mid-20s. This isn't a marginal call; synoptic patterns are unequivocally bullish on temperature. Expect 23-25°C. 95% YES — invalid if a major unforecasted cold frontal passage materializes after current model runs.
