ECMWF and GFS ensemble guidance robustly projects a significant northerly advection impacting Munich by April 27, driven by a deep shortwave trough. The 850hPa temperature anomaly is consistently modeled at -2°C below climatology, translating to 2m maximums peaking in the 9-11°C range. Persistent cloud cover and potential light precipitation will further suppress surface heating. The market is evidently underpricing this cold airmass intrusion. We hold high conviction for a sub-12°C high. 95% YES — invalid if significant ridging develops earlier than modeled.
ECMWF and GFS ensemble guidance robustly projects a significant northerly advection impacting Munich by April 27, driven by a deep shortwave trough. The 850hPa temperature anomaly is consistently modeled at -2°C below climatology, translating to 2m maximums peaking in the 9-11°C range. Persistent cloud cover and potential light precipitation will further suppress surface heating. The market is evidently underpricing this cold airmass intrusion. We hold high conviction for a sub-12°C high. 95% YES — invalid if significant ridging develops earlier than modeled.
