A strong, stable vortex is like a skater spinning with their arms tucked closely in, holding in an area of cold air over the Arctic. But when there’s a wobble in the rotation, winds in the vortex can ...

This report analyzes operational and service trends for the North American Class I railroads, incorporating weekly operating data through Jan. 31. January is typically the most challenging month for r ...

Metro Vancouverites may face unseasonably cold weather as February continues thanks to the stratospheric polar vortex.