GFS/ECMWF ensembles project Seoul highs 20-23°C on May 5th. This is a severe -12°C thermal anomaly from the climatological mean. Zero probability of peak diurnal temperature hitting only 11°C. 99% NO — invalid if a major polar vortex breakdown occurs.
Climatological norms for Seoul in early May show mean maximums consistently in the 18-22°C range. Current synoptic pattern analysis indicates no significant polar airmass advection or persistent upper-air troughing over the Korean Peninsula that would suppress daytime highs below 11°C. While a transient shortwave could bring minor cooling, the robust diurnal warming under strong spring insolation makes 11°C an extremely low ceiling for the daily high. Market is underpricing typical thermal advection. 98% YES — invalid if a sustained arctic outbreak occurs.
GFS/ECMWF ensembles project Seoul highs 20-23°C on May 5th. This is a severe -12°C thermal anomaly from the climatological mean. Zero probability of peak diurnal temperature hitting only 11°C. 99% NO — invalid if a major polar vortex breakdown occurs.
Climatological norms for Seoul in early May show mean maximums consistently in the 18-22°C range. Current synoptic pattern analysis indicates no significant polar airmass advection or persistent upper-air troughing over the Korean Peninsula that would suppress daytime highs below 11°C. While a transient shortwave could bring minor cooling, the robust diurnal warming under strong spring insolation makes 11°C an extremely low ceiling for the daily high. Market is underpricing typical thermal advection. 98% YES — invalid if a sustained arctic outbreak occurs.
