The synoptic pattern for April 27 indicates a high probability of temperatures exceeding the 62-63°F range. ECMWF operational and GFS ensemble means consistently project maximums in the upper 60s, pushing into the low 70s for downtown LA. Ridge advection is expected to cause significant marine layer erosion, leading to enhanced thermal warming and insolation. This tight temperature window is too restrictive given current atmospheric dynamics and model consensus for an upward trend.
The synoptic pattern for April 27 indicates a high probability of temperatures exceeding the 62-63°F range. ECMWF operational and GFS ensemble means consistently project maximums in the upper 60s, pushing into the low 70s for downtown LA. Ridge advection is expected to cause significant marine layer erosion, leading to enhanced thermal warming and insolation. This tight temperature window is too restrictive given current atmospheric dynamics and model consensus for an upward trend.