Shanghai's April 29th climatological mean high is 21.5°C. GFS ensemble analysis indicates strong warm advection, with daily max temps consistently 20-24°C. The 18°C threshold is too low. 98% YES — invalid if unexpected synoptic down-ramp.
Shanghai's April 29th climatological mean high is 21.5°C. GFS ensemble analysis indicates strong warm advection, with daily max temps consistently 20-24°C. The 18°C threshold is too low. 98% YES — invalid if unexpected synoptic down-ramp.