IOWA PRELIMINARY WEATHER SUMMARY

Written by Theresa Rose on April 17, 2018

IOWA PRELIMINARY WEATHER SUMMARY

By Michael Timlin, Regional Climatologist, Midwestern Regional Climate Center

Temperatures were below normal across the state, with readings more below normal further to the north. Precipitation was well above normal along the northern border and below normal along the southern border. Temperatures ranged from about 3 degrees cooler than normal in the south to as much as 12 degrees cooler than normal in the north. Freezing temperatures were recorded statewide in the first couple days of the week and then again for all but the southeast counties on the morning of the 15th. Minimum temperatures were above freezing on the 12th through the 14th for much of the state. Warm daytime temperatures pushed into the southern half of the state with a handful of 80 degree readings in southwestern Iowa. The warmest reading was 85 degrees on the 14th in Sidney. The coldest readings of the week were in northeastern Iowa on the 9th when Waukon fell to 4 degrees and Cresco fell to 8 degrees. Many northern Iowa stations recorded lows in the teens and below freezing highs during the week. Soil temperatures in the south climbed above 40 degrees but remained near freezing in the northwest. Precipitation totals ranged up to 3.91 inches in Spirit Lake and topped 3 inches at a handful of northern stations. Along the western and southern borders of the state, precipitations totals of less than a quarter inch were reported at multiple stations. Snow also was reported statewide, with totals exceeding a foot at some stations in northwestern and north central parts of the state. Spirit Lake reported 20.1 inches in the 7-day period. Storms on the 13th brought large hail and strong winds to Iowa. Hail reports up to 2 inches in diameter and wind damage reports to buildings and vehicles stretched between the southwest and northeast corners of the state.