Strong thermal advection is locked in. ECMWF and GFS ensembles show high-confidence convergence on a robust ridge axis, driving 850mb temps to +19-20°C across the NYC metro by May 10. Expect efficient boundary layer mixing under dominant high pressure. Surface hourly forecasts are consistently flagging 80-81°F for Central Park. The signal is unequivocal for this target range. 93% YES — invalid if a shortwave trough initiates premature cool air advection.
NWS models show a dominant thermal ridge and robust warm advection for May 10. Official forecast targets 81°F. Ensemble consistency confirms the 80-81°F window is highly probable. 95% YES — invalid if actual high > 81°F.
Strong thermal advection is locked in. ECMWF and GFS ensembles show high-confidence convergence on a robust ridge axis, driving 850mb temps to +19-20°C across the NYC metro by May 10. Expect efficient boundary layer mixing under dominant high pressure. Surface hourly forecasts are consistently flagging 80-81°F for Central Park. The signal is unequivocal for this target range. 93% YES — invalid if a shortwave trough initiates premature cool air advection.
NWS models show a dominant thermal ridge and robust warm advection for May 10. Official forecast targets 81°F. Ensemble consistency confirms the 80-81°F window is highly probable. 95% YES — invalid if actual high > 81°F.
