The report from the CU and the National Oceanic and Atmospheric Administration is a warning to emergency planners to expect the unexpected when it comes to Colorado’s weather.
Residents there began noticing problems Thursday night when items began slipping off shelves in one home and then the skirting around its foundation fell off.
Ping pong-sized hail was reported near Greeley and a tornado was spotted east of Denver.
A long stretch of stormy weather continues over Colorado, with more rain for the Front Range, and snow this weekend in the mountains.
State transportation crews used eight plows to clear hail on a stretch of Interstate 25 through the city Thursday afternoon.
Meteorologist Frank Cooper says that the main flooding concern is for burned areas.
Multiple injuries have been reported, none fatal.
Jim Kalina with the National Weather Service in Boulder says this storm has been particularly difficult to forecast.
Higher elevations in Larimer and Boulder counties could see up to 3 feet of heavy, wet snow.
Gusty winds combined with very warm temperatures and dry fuels mean conditions are ripe for fast moving wildfires.