IOWA PRELIMINARY WEATHER SUMMARYWritten by Theresa Rose on April 21, 2015
By Harry Hillaker, State Climatologist, Iowa Department of Agriculture & Land Stewardship
A pair of storm systems brought widespread rain to Iowa this past reporting week. The first event from late Sunday (12th) into Monday (13th) morning brought a statewide average of 0.34 inches of rain with largest amounts along the Missouri border, where a few locations received over an inch, and least along the Minnesota border. The other event began Saturday (18th) morning over southwest Iowa and continued into Monday (20th) morning over eastern Iowa. This second event brought a statewide average of 1.17 inches of rain with an inch or more falling over a broad area from southwest, through central, into parts of north central Iowa. Much lesser amounts fell over the far northwest corner of the state and near the Illinois border. There was also some very light rainfall over southwest and west central Iowa on Wednesday (15th). Rain totals for the week varied from 0.15 inches at Lester (Lyon County) to 2.93 inches at Bedford. The statewide average precipitation for the week as a whole was 1.51 inches while normal for the period is 0.85 inches. Meanwhile, temperatures were above normal throughout the week with warmest readings from Thursday (16th) through Saturday (18th), but with unseasonably mild readings persisting into Sunday (19th) over far eastern Iowa. Temperatures for the week as a whole averaged 7.8 degrees above normal. Nevertheless, a freeze was recorded over portions of Iowa on Tuesday (14th) morning with Elkader the cold spot at 27 degrees. On the other extreme temperatures reached 82 degrees at Donnellson (Lee County) on Friday (17th). Soil temperatures at the four inch depth as of Sunday (19th) were averaging in the low fifties northwest to low sixties far southeast but will be falling substantially with much cooler weather expected to persist throughout the coming week.