Forecast confidence is high for a NO. GFS and ECMWF ensemble means for April 28th position Sao Paulo's maximum surface temp at 25-26°C, consistently below the 27°C threshold. The synoptic pattern shows a post-frontal cool air advection consolidating, preventing any significant thermal surge. Plume analysis indicates only a 10% probability of exceeding 27°C. This market is underpricing the negative thermal anomaly. 90% NO — invalid if a sudden advection of tropical air mass occurs.
Forecast confidence is high for a NO. GFS and ECMWF ensemble means for April 28th position Sao Paulo's maximum surface temp at 25-26°C, consistently below the 27°C threshold. The synoptic pattern shows a post-frontal cool air advection consolidating, preventing any significant thermal surge. Plume analysis indicates only a 10% probability of exceeding 27°C. This market is underpricing the negative thermal anomaly. 90% NO — invalid if a sudden advection of tropical air mass occurs.
