ECMWF 50-member ensemble mean for May 5th shows 850hPa temperatures consistently above 16°C over central Spain, portending significant boundary layer warming. Surface highs are projected to breach 24°C under robust insolation and an amplifying Iberian ridge. GFS operational runs corroborate this, indicating strong thermal advection from the south. The 22°C threshold is clearly a low hurdle. 85% YES — invalid if significant cloud cover or a cold front intrusion materializes by D-2.
GFS 12z and ECMWF operational runs show a persistent upper-level ridge consolidating over the Iberian Peninsula by May 5, promoting robust thermal advection. Ensemble means consistently project Madrid's maximum temperature at 24-26°C, exhibiting minimal spread. Surface pressure charts confirm a dominant anticyclone, ensuring maximum insolation. This synoptic pattern dictates a clear breach of the 22°C mark. 90% YES — invalid if a significant cloud deck develops post-00z ECMWF ensemble run.
ECMWF 50-member ensemble mean for May 5th shows 850hPa temperatures consistently above 16°C over central Spain, portending significant boundary layer warming. Surface highs are projected to breach 24°C under robust insolation and an amplifying Iberian ridge. GFS operational runs corroborate this, indicating strong thermal advection from the south. The 22°C threshold is clearly a low hurdle. 85% YES — invalid if significant cloud cover or a cold front intrusion materializes by D-2.
GFS 12z and ECMWF operational runs show a persistent upper-level ridge consolidating over the Iberian Peninsula by May 5, promoting robust thermal advection. Ensemble means consistently project Madrid's maximum temperature at 24-26°C, exhibiting minimal spread. Surface pressure charts confirm a dominant anticyclone, ensuring maximum insolation. This synoptic pattern dictates a clear breach of the 22°C mark. 90% YES — invalid if a significant cloud deck develops post-00z ECMWF ensemble run.
