GFS ensemble mean indicates robust cold advection pushing highs to 11°C. Historical May 5th data shows 4/10 instances at or below 12°C. Synoptic pattern favors below-average maxima. 85% YES — invalid if ridge builds pre-event.
GFS ensemble mean indicates robust cold advection pushing highs to 11°C. Historical May 5th data shows 4/10 instances at or below 12°C. Synoptic pattern favors below-average maxima. 85% YES — invalid if ridge builds pre-event.