midwest

A strong, upper-level trough that dropped down into the Central Rockies in the middle of last week produced an early spring storm (also referred to as Winter Storm Selene) that dumped heavy snow on the order of a foot or more in a short period of time along the Front Range of Colorado from near Colorado Springs northward through Denver and up into southeastern Wyoming. Around 2 feet of snow were reported in places like Aurora and Boulder with some of the highest totals reaching 31 inches. Farther to the north, Cheyenne, Wyoming picked up over 14 inches of snow from the storm. The blizzard

An advancing frontal system extending from the Great Lakes region all the way down to the Gulf Coast supported a line of widespread storms and thunderstorms that brought heavy rain to parts of Iowa, Illinois, Missouri, and Indiana. The hardest hit area was northern Illinois where flooding was reported in and around Chicago. The scenario was set up by a deep upper-level trough that moved out of the Rockies and into the Plains. Strong southerly winds ahead of the trough allowed warm, moist air from the Gulf of Mexico to stream northwards all the way up to Lake Michigan. The TRMM-based, near-real