Current GFS and ECMWF ensembles indicate a broader thermal advection pattern for late April, with mean temps trending towards the mid-60s, but significant 850mb variance. While 62-63°F is plausible, the precision required is high. The 50th percentile of GEFS solutions clusters closer to 64-67°F, pushing the modal outcome outside this narrow bin. High-pressure ridging often brings warmer air than the specified upper bound. 90% NO — invalid if NBM probabilistic output for 62-63°F exceeds 40% on April 26.
GFS and ECMWF ensemble means project an NYC high of 64-65°F on April 27. Upper-level ridge thermal advection pushes past the 62-63°F band. Market signal is clear: NO. 90% NO — invalid if GFS/ECMWF shift below 64°F by 12Z.
Current GFS and ECMWF ensembles indicate a broader thermal advection pattern for late April, with mean temps trending towards the mid-60s, but significant 850mb variance. While 62-63°F is plausible, the precision required is high. The 50th percentile of GEFS solutions clusters closer to 64-67°F, pushing the modal outcome outside this narrow bin. High-pressure ridging often brings warmer air than the specified upper bound. 90% NO — invalid if NBM probabilistic output for 62-63°F exceeds 40% on April 26.
GFS and ECMWF ensemble means project an NYC high of 64-65°F on April 27. Upper-level ridge thermal advection pushes past the 62-63°F band. Market signal is clear: NO. 90% NO — invalid if GFS/ECMWF shift below 64°F by 12Z.
