As much as 200 mm of rain have been recorded in portions of British Columbia , on the west coast of Canada since Monday.
200 mm of rain is a small amount
200 mm sounds like very little but can have a large impact
( z1 amount :mod ( z2 small ) :domain ( z3 rain :quant ( z4 distance-quantity :quant 200 :unit ( z5 millimeter ) ) ) )