950 mb ageostrophic wind and divergence
Notes:
The snow band east over and east of Lake Ontario was maintained for several days in response to a very strong zone of low-level convergence persisting across the area. The data on these slides show that the convergence (shaded) occurred in a zone where a very strong low-level ageostrophic flow south of Lake Ontario converged with a lighter ageostrophic flow over and downwind of the lake.Slide 9