The Iowa Environmental Mesonet (IEM) collects environmental data from cooperating members with observing networks. The data are stored and made available on this website.
Windy March Days
Posted: 01 Apr 2025 05:30 AM, Views: 781
Compared with most days this March, winds were not all that bad yesterday to end the month. The featured chart presents the number of days each March with a daily peak wind gust of at least 30 MPH at Mason City (NC Iowa). The 19 days this year is the most since at least 1973. While some data exists prior to 1973 for the site, observation techniques and reporting were different prior to then making longer term comparisons a bit tricky. That aside, it is interesting to see each of the past six years above a recent trend line and longer term average. A common refrain from Iowans is that it is windier now than in the past, but authoritatively answering that statement with observed data is difficult.
Previous Years' Features
CoCoRaHS Update
Posted: 29 Jan 10:29 AM
13-16 Jan Network Issue [resolved]
Posted: 15 Jan 10:13 AM
Alaska Marine Warnings
Posted: 8 Jan 9:28 AM
Wagering on ASOS Temperatures
Posted: 4 Dec 10:39 AM
25 Sep Website Issues [resolved]
Posted: 25 Sep 8:04 AM
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Soil Temperatures
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.
Current Data
The IEM combines data from participating networks into products like maps shown above and web applications to analyze the data.
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