As the line of storms in #MDwx becomes oriented along a W-E axis, the Sward propagation component to the line's motion will cancel with the Nward component of the shear vector&result in slow/near stationary storm motion. Expect threat to transition from wind->flooding accordingly pic.twitter.com/gye7BfqvbB

— Jack Sillin πŸ‡ΊπŸ‡¦ (@JackSillin) May 15, 2018