Climatological normals for Taipei in late April show mean maximum temperatures consistently near 26-27°C. Current ECMWF and GFS ensemble forecasts indicate a strengthening subtropical ridge dominating regional synoptic patterns, driving significant warm thermal advection. 850 hPa geopotential height anomalies are projected positive, pushing afternoon surface temperatures well past the 25°C threshold. The probability distribution strongly favors a warmer outcome. 90% YES — invalid if a significant pre-frontal trough disrupts southerly flow before 00 UTC on April 29.
Climatological normals for Taipei in late April show mean maximum temperatures consistently near 26-27°C. Current ECMWF and GFS ensemble forecasts indicate a strengthening subtropical ridge dominating regional synoptic patterns, driving significant warm thermal advection. 850 hPa geopotential height anomalies are projected positive, pushing afternoon surface temperatures well past the 25°C threshold. The probability distribution strongly favors a warmer outcome. 90% YES — invalid if a significant pre-frontal trough disrupts southerly flow before 00 UTC on April 29.
