IOWA PRELIMINARY WEATHER SUMMARY

Written by Theresa Rose on June 16, 2015

By Harry Hillaker, State Climatologist, Iowa Department of Agriculture & Land Stewardship

The past reporting week began with a few scattered showers and thunderstorms late Sunday (7th) over parts of far southern and eastern Iowa. Dry weather prevailed over most of the state on Monday (8th) and Tuesday (9th) while thunderstorms brought locally heavy rain to the southern one-third of Iowa on Wednesday (10th) afternoon and evening with light to moderate rain falling over the northwest one-quarter of the state. Showers and thunderstorms brought rain to all of Iowa on Thursday (11th) with locally heavy rain over parts of southwest and east central Iowa. Friday (12th) and Saturday (13th) brought more rain to east central and southeast Iowa. Additional rain fell on Sunday (14th) and Sunday night over the southern two-thirds of the state with some locally heavy rains over portions of southwest and central Iowa. Some of the Sunday rainfall would have fallen too late to be reflected fully in the crop condition reports. Weekly rain totals were generally lowest across northwestern Iowa with a report just south of Lake Park in Dickinson County of 0.43 inches. However, very heavy rain fell in other areas, particularly in southwest and east central sections. The largest reported total came from north of New Market in Taylor County of 6.07 inches. Other hefty totals included 5.98 inches in Davenport, 5.37 inches near Amana and 4.76 inches at Sidney. The statewide average precipitation total was 1.91 inches while normal for the week is 1.19 inches. This was the highest weekly average in 39 weeks (second week of September 2014). A few of the thunderstorms over the southern one-third of Iowa were accompanied by large hail and/or high winds on Sunday (7th), Wednesday (10th) and Thursday (11th). Temperatures were well above normal for most of the week with daytime highs in the nineties nearly everywhere on Tuesday (9th) with a highest reading of 99 degrees at Sioux City. Hot weather continued on Wednesday, along with more humidity, with 97 degree maximums at Clarinda, Red Oak and Shenandoah. However, persistent cloud cover and rainfall held daytime highs in the sixties over many northern and western areas on Thursday and Friday. Temperatures for the week as a whole averaged 3.2 degrees above normal (72.4 degrees, weekly normal of 69.2), making this the warmest week since the last week of August 2014.