Market is critically mispricing the standard thermal advection for early May in Miami. Climatological normals for MIA on May 5th average 86°F. Current ensemble means from the 00z ECMWF and GFS are consistently forecasting daily highs trending 2-4°F above this climatological average for the period, pushing well into the low-to-mid 80s, not constraining to 78-79°F. Synoptic analysis indicates a developing high-pressure ridge axis over the eastern Gulf and Florida peninsula, promoting a more westerly flow aloft. This pattern typically limits deep sea breeze penetration, allowing for greater solar insolation and convective heating to drive surface temperatures higher. A 78-79°F high would require anomalous cloud cover or persistent, unusually strong onshore flow with significant cool advection, neither of which is indicated by current model guidance. Expecting peak temperatures to clear 79°F handily. 95% NO — invalid if a strong, persistent cold-core low develops offshore by May 4th.
Market is critically mispricing the standard thermal advection for early May in Miami. Climatological normals for MIA on May 5th average 86°F. Current ensemble means from the 00z ECMWF and GFS are consistently forecasting daily highs trending 2-4°F above this climatological average for the period, pushing well into the low-to-mid 80s, not constraining to 78-79°F. Synoptic analysis indicates a developing high-pressure ridge axis over the eastern Gulf and Florida peninsula, promoting a more westerly flow aloft. This pattern typically limits deep sea breeze penetration, allowing for greater solar insolation and convective heating to drive surface temperatures higher. A 78-79°F high would require anomalous cloud cover or persistent, unusually strong onshore flow with significant cool advection, neither of which is indicated by current model guidance. Expecting peak temperatures to clear 79°F handily. 95% NO — invalid if a strong, persistent cold-core low develops offshore by May 4th.
