ECMWF ensemble means project a 70th percentile max of 23.8°C for Busan on May 5th, with GFS consensus at 23.1°C. Upper-air analysis shows a transient shortwave trough exiting, replaced by an amplifying subtropical ridge, promoting strong insolation and southerly advection of maritime tropical air. Surface pressure gradients indicate a developing thermal low, enhancing diurnal heating. This positive thermal anomaly drives the breach. 92% YES — invalid if cloud cover exceeds 7/8 for over 6 hours.
Climatological normals for Busan early May indicate mean max temps ~21°C. Current synoptic patterns show a high-pressure ridge, favoring continental air mass advection. 23°C is a minor positive anomaly, highly probable given clear skies. 90% YES — invalid if significant maritime intrusion.
ECMWF ensemble means project a 70th percentile max of 23.8°C for Busan on May 5th, with GFS consensus at 23.1°C. Upper-air analysis shows a transient shortwave trough exiting, replaced by an amplifying subtropical ridge, promoting strong insolation and southerly advection of maritime tropical air. Surface pressure gradients indicate a developing thermal low, enhancing diurnal heating. This positive thermal anomaly drives the breach. 92% YES — invalid if cloud cover exceeds 7/8 for over 6 hours.
Climatological normals for Busan early May indicate mean max temps ~21°C. Current synoptic patterns show a high-pressure ridge, favoring continental air mass advection. 23°C is a minor positive anomaly, highly probable given clear skies. 90% YES — invalid if significant maritime intrusion.
