Snow Mold
Source: OSU Turfgrass Pathology

With the snow gone, pink snow mold is present on turfgrass, especially on immature, lush, succulent stands of grass seeded last fall. In general, snow cover was not of long enough duration this past winter for the development of gray snow molds. There are some situations where light damage of gray snow mold is present but these are limited to sites where snow was piled up for long periods of time or in snow belt areas.