Seoul's climatological May 11 daily high averages near 23°C. Historical data from the past five years consistently shows peak diurnal temperatures between 20°C and 26°C. A precise 16°C highest temperature represents a severe negative thermal anomaly, 7°C below the mean, necessitating an extreme upper-air trough or significant cold advection. The probability of hitting an exact single-degree isotherm as the daily maximum is extraordinarily low. 98% NO — invalid if official KMA data indicates a 16.0°C daily high.
Seoul's climatological May 11 daily high averages near 23°C. Historical data from the past five years consistently shows peak diurnal temperatures between 20°C and 26°C. A precise 16°C highest temperature represents a severe negative thermal anomaly, 7°C below the mean, necessitating an extreme upper-air trough or significant cold advection. The probability of hitting an exact single-degree isotherm as the daily maximum is extraordinarily low. 98% NO — invalid if official KMA data indicates a 16.0°C daily high.
