The Iowa Environmental Mesonet (IEM) collects environmental data from cooperating members with observing networks. The data are stored and made available on this website.

IEM Daily Feature

Des Moines on Low End

Posted: 21 Jun 2024 05:30 AM, Views: 1642
For the year to date period, one of the driest locations in the state is the Des Moines Airport. The featured chart looks into the uniqueness of having Des Moines this relatively dry compared with the rest of the state. The top panel presents the yearly precipitation percentile for the location vs all other reporting locations in the state for the given year. The bottom panel shows the bias vs a simple mean value against those same stations. Interestingly, the mean percentile and bias value are very close to the middle of both distributions. Rewording, the geographically center location of Des Moines within Iowa also puts it in the middle of range of precipitation over the state. Indeed, without any notable topographic features, the precipitation climatology is rather smoothly oriented in a SE to NW orientation. The right hand side shows the top 10 and bottom 10 percentile ranks. So the 2024 year to date total ranks lowest vs all other previous full calendar year totals. So it would seem Des Moines is due for a few big storms to even things out against other sites for the year!
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Previous Years' Features
2004: Bigotry
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Data from the Iowa State Soil Moisture Network is found on this website and daily soil temperature averages are used to produce the highlighted analysis.


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