The -3°C threshold is a ridiculous undershoot. Moscow's late April mean high is ~9°C, making a -3°C peak an extreme negative anomaly. 99% YES — invalid if Siberian vortex parks directly over city.
The -3°C threshold is a ridiculous undershoot. Moscow's late April mean high is ~9°C, making a -3°C peak an extreme negative anomaly. 99% YES — invalid if Siberian vortex parks directly over city.