The probabilistic outputs from consensus guidance firmly indicate a `no` on the 72-73°F T_min range for Miami on May 6. GFS and ECMWF ensemble means are consistently printing 73.8-74.2°F, with 85th percentile confidence intervals extending to 75°F. The 500 hPa pattern shows persistent ridging, sustaining a robust tropical airmass over South Florida. Nocturnal radiational cooling is heavily capped by high dew point depressions, with surface observations and model soundings indicating a sustained DP_min of 71-72°F. This strong moisture advection, coupled with the UHI effect, establishes a thermodynamic floor above the target range. Short-range deterministic models like NAM are printing lows closer to 74°F. Sentiment: Local forecasters are also trending towards the upper end of historical averages. A narrow 2-degree window is highly improbable given the atmospheric setup. 90% NO — invalid if a significant dry air mass advection event or unexpected frontal passage occurs.
The probabilistic outputs from consensus guidance firmly indicate a `no` on the 72-73°F T_min range for Miami on May 6. GFS and ECMWF ensemble means are consistently printing 73.8-74.2°F, with 85th percentile confidence intervals extending to 75°F. The 500 hPa pattern shows persistent ridging, sustaining a robust tropical airmass over South Florida. Nocturnal radiational cooling is heavily capped by high dew point depressions, with surface observations and model soundings indicating a sustained DP_min of 71-72°F. This strong moisture advection, coupled with the UHI effect, establishes a thermodynamic floor above the target range. Short-range deterministic models like NAM are printing lows closer to 74°F. Sentiment: Local forecasters are also trending towards the upper end of historical averages. A narrow 2-degree window is highly improbable given the atmospheric setup. 90% NO — invalid if a significant dry air mass advection event or unexpected frontal passage occurs.
