The Iowa Environmental Mesonet (IEM) collects environmental data from cooperating members with observing networks. The data are stored and made available on this website.
Hour of New Minimum
Posted: 10 Oct 2017 05:34 AM, Views: 332
Tags: oct
Some of the coldest air of the season arrived over Iowa overnight. A number of locations will likely set new fall minimum temperatures. The featured chart looks at the hour at which and the new minimum fall temperature that was reported during October for Des Moines. Of interest are the very few number of reports between noon and 6 PM. This shows that it is very difficult to set new fall minimum lows during the afternoon hours as it is difficult to get very cold air into the region when even minimal amounts of sunshine can provide some heating. It will be interesting to see if this situation can happen today with very cool temperature expected this afternoon for places like Des Moines.
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RADAR Products
The IEM processes National Weather Service NEXRAD information in real-time to produce and archive many products. This includes a generated composite produced every five minutes dating back to 1995!
Precipitation
Besides point observations of precipitation, the IEM also processes gridded rainfall products made available by NOAA. This information is archived and made available in GIS ready formats.
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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