Significant winter storm to impact Iowa late Monday night through Tuesday night. Snow will spread into Iowa Monday night and Tuesday morning with a broad swath of 6 inches or more falling. This will impact the morning commute in many areas. Strong winds with gusts over 40-mph are likely from the afternoon onward, and will blow and drift the snow producing periods of near whiteout conditions especially in rural areas north and west of Des Moines.
The National Weather Service in Des Moines has cancelled some of the blizzard watch and has replaced it with a winter storm watch.
Snow will spread in late Monday night through Tuesday morning, become light or possibly stop in the afternoon, then pick up again with increasing winds by the evening. A period of very heavy snow may occur around the morning commute with snowfall rate of 1 to 2 inches per hour possible. The strongest winds will then occur from Tuesday afternoon in Tuesday night.
Snowfall accumulations will range from 6″ to 12″. Northeast winds becoming northwest 25 to 30-mph with gusts in excess of 40-mph at times. Visibilities around a quarter mile will be possible in times of heavy snowfall or strong winds.
Very hazardous travel conditions will develop. Travel may become nearly impossible at times. Please reconsider any travel plans.