Flooding is already occurring across portions of the Midwest but melting snow combined with heavy rainfall could make conditions worse over the next several weeks. Heavy winter snow combined with recent rain
indicates parts of Wisconsin and Illinois should see minor to moderate flooding, with as much as a 20 to 30 percent chance of major flooding on some rivers in southern Wisconsin and northern Illinois. Current snow depth in some areas of upstate New York and New England is more than a foot greater than usual for this time of the year, which
increases flood potential in the Connecticut River Valley. Locations in the mountains of Colorado and Idaho have 150 to 200 percent of average water contained in snow pack leading to a higher than normal flood potential. Snowfall has been normal or above normal across most of the West this winter; however, preexisting dryness in many areas will prevent most flooding in this region. Runoff from snow pack is expected to significantly improve stream flows compared to last year for the West.