Synoptic patterns indicate persistent warm airmass. GFS/ECMWF ensembles show thermal maxima averaging 28°C for May 10. This makes a 23°C or below high extremely improbable. 95% NO — invalid if major cold front unexpectedly shifts.
Historical climatology for Guangzhou on May 10 shows 7-year average highs near 29°C. Current synoptic models indicate no significant cold air advection. The 23°C isotherm is too low. 90% NO — invalid if tropical cyclone proximity.
Synoptic patterns indicate persistent warm airmass. GFS/ECMWF ensembles show thermal maxima averaging 28°C for May 10. This makes a 23°C or below high extremely improbable. 95% NO — invalid if major cold front unexpectedly shifts.
Historical climatology for Guangzhou on May 10 shows 7-year average highs near 29°C. Current synoptic models indicate no significant cold air advection. The 23°C isotherm is too low. 90% NO — invalid if tropical cyclone proximity.