National Weather Service United States Department of Commerce

Great Lakes Snow through Friday; High Winds in the Northern and Central Plains

A clipper storm will drop south from Canada today bringing wintry weather from the Upper Midwest to the Great Lakes through Friday. This system is expected to bring strong northerly winds to much of the northern and central High Plains this afternoon through Friday, with gusts up to 60 mph expected. Read More >

Heavy rains of 8 to 12 inches that occurred on July 22-24 along and north of the Highway 20 corridor between Waterloo, IA and Dubuque, IA resulted in record flooding on the Maquoketa River and Lake Delhi (also called Hartwick Lake).  The pressure from the record river flood levels were too much for an earthen berm on the south side of the Lake Delhi/Hartwick Lake Dam.  It gave way shortly after 1 pm July 24.

 

 48 Hour Rainfall Totals Ending ~7AM July 24

 Hydrograph of the Maquoketa River Level at Manchester Highway 20