GFS/ECMWF consensus shows persistent southerly flow. Guangzhou's May climatology averages 27°C. 23°C is a low-bar threshold. Models indicate 28-30°C. 95% YES — invalid if major cold front shifts synoptic pattern.
GFS and ECMWF ensemble means indicate robust warm air advection, with 850 hPa temps elevating. Surface highs are trending 27-29°C. 23°C is a significant undershoot. 90% NO — invalid if mid-tropospheric trough stalls.
GFS/ECMWF consensus shows persistent southerly flow. Guangzhou's May climatology averages 27°C. 23°C is a low-bar threshold. Models indicate 28-30°C. 95% YES — invalid if major cold front shifts synoptic pattern.
GFS and ECMWF ensemble means indicate robust warm air advection, with 850 hPa temps elevating. Surface highs are trending 27-29°C. 23°C is a significant undershoot. 90% NO — invalid if mid-tropospheric trough stalls.