With May a little more than a week away, the Great Lakes are still a third ice-covered at a time of year when they were often entirely ice-free or very nearly so.
This is the largest ice cover so late in the season observed in the satellite era — since the 1970s, basically.
The frozen Great Lakes and persistent cold air in that region, the Northeast and northward into Canada is part of a large-scale pattern that is keeping severe storms well below seasonal norms over much of the U.S.
On Tuesday, the U.S. set a record for the latest the nation has ever gone into a calendar year without a tornado death.