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

Waiting for first inch

Posted: 13 Dec 2017 05:33 AM, Views: 375
While places like Ames have seen flurries this season, any snow of consequence has been elusive. The featured chart displays the date of the first winter season one plus inch snowfall, the amount of that snowfall and the number of days until no snow cover was reported. By mid-December, about 75% of years have seen an inch plus of snowfall by now. So our current snowfall drought this season is not too exceptional.
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New Hampton US 18 East, IA Webcam:
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VTEC Event ID Reusage
Posted: 08 Dec 07:45 AM

August COOP Data Uploaded
Posted: 28 Nov 10:39 AM

VTEC Browser Update
Posted: 21 Nov 05:12 PM

National Mesonet Website Launched
Posted: 20 Nov 03:44 PM

July COOP Data Uploaded
Posted: 08 Nov 11:54 PM

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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!

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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.

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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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