Warped faces in Tgrid
 

Hi all,

I am trying to build a prismatic boundary layer using T-grid on an unstructured triangular grid. The surface face skewness <0.75, but when I build the prisms, T-grid's mesh check comes out with:

Face area statistics. Warning: 60 faces has warp greater than or equal to 0.5

How do I go about fixing this?