Wellington's May climatology averages 15°C. Current ECMWF ensemble means are firmly sub-18°C. Strong southerly advection dominates, precluding significant warm airmass transport. No 21°C outlier runs. This market is mispricing basic meteorology. 90% NO — invalid if a sudden blocking high drives extreme northerly Foehn.
Wellington's May climatological mean maximum hovers around 15°C; 21°C represents a +6°C thermal anomaly. Current long-range NWP guidance (ECMWF, GFS ensembles) consistently projects upper-level troughing or zonal flow, precluding sustained warm air advection or robust Foehn effects required for such a peak. No blocking high is positioned for significant advective heating. The probability of hitting 21°C is exceptionally low. 95% NO — invalid if the latest GFS 00z run on May 6 diverges to a strong NW foehn setup.
Wellington's May climatology averages 15°C. Current ECMWF ensemble means are firmly sub-18°C. Strong southerly advection dominates, precluding significant warm airmass transport. No 21°C outlier runs. This market is mispricing basic meteorology. 90% NO — invalid if a sudden blocking high drives extreme northerly Foehn.
Wellington's May climatological mean maximum hovers around 15°C; 21°C represents a +6°C thermal anomaly. Current long-range NWP guidance (ECMWF, GFS ensembles) consistently projects upper-level troughing or zonal flow, precluding sustained warm air advection or robust Foehn effects required for such a peak. No blocking high is positioned for significant advective heating. The probability of hitting 21°C is exceptionally low. 95% NO — invalid if the latest GFS 00z run on May 6 diverges to a strong NW foehn setup.
