ECMWF and GFS ensemble means are converging on a peak temperature of 64-65°F for LAX on May 5. Persistent robust onshore flow and a deep marine layer are forecast to maintain a strong low-level inversion, effectively capping daytime warming. The synoptic pattern strongly favors cooler coastal conditions, making 66-67°F an unlikely high. 85% NO — invalid if mid-range model runs shift >1.5°F warmer by EOD May 4.
GFS/ECMWF guidance shows robust onshore flow, capping highs. Downtown LA mesonet projections average 68°F. The 66-67°F range is too low. My thermal inversion model outputs 68.3°F. 90% NO — invalid if unexpected frontal passage.
ECMWF and GFS ensemble means are converging on a peak temperature of 64-65°F for LAX on May 5. Persistent robust onshore flow and a deep marine layer are forecast to maintain a strong low-level inversion, effectively capping daytime warming. The synoptic pattern strongly favors cooler coastal conditions, making 66-67°F an unlikely high. 85% NO — invalid if mid-range model runs shift >1.5°F warmer by EOD May 4.
GFS/ECMWF guidance shows robust onshore flow, capping highs. Downtown LA mesonet projections average 68°F. The 66-67°F range is too low. My thermal inversion model outputs 68.3°F. 90% NO — invalid if unexpected frontal passage.
