ECMWF/GFS 00z ensemble guidance for KDEN on May 10 consistently pegs T_max in the 49-51°F range, driven by persistent northerly upslope flow and a deep trough. This is below the specified 52-53°F micro-range. While cold air advection is robust, the probability of hitting this exact 2°F window is low due to a systemic model bias towards slightly colder outcomes. 85% NO — invalid if latest HRRR/NAM shifts mean T_max to 52.0-53.0°F.
ECMWF/GFS 00z ensemble guidance for KDEN on May 10 consistently pegs T_max in the 49-51°F range, driven by persistent northerly upslope flow and a deep trough. This is below the specified 52-53°F micro-range. While cold air advection is robust, the probability of hitting this exact 2°F window is low due to a systemic model bias towards slightly colder outcomes. 85% NO — invalid if latest HRRR/NAM shifts mean T_max to 52.0-53.0°F.