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

'17-'18 Winter Storm #16

Posted: 18 Feb 2018 01:17 PM, Views: 635
Tags:   winter1718  
A quick moving system brought a brief downpour of snowfall on Saturday which only amounted to an inch or two over the state, but created for some travel impacts due to the intense snowfall rate. Most of this snowfall melted later on Saturday as temperatures warmed nicely to finish the day. Our next storm system will be here tonight.
Rate Feature

Previous Years' Features
New Hampton (US 18), IA Webcam:
News Items  

November COOP Data Uploaded
Posted: 14 Feb 10:10 PM

GOES East Satellite Status
Posted: 07 Feb 01:36 PM

October COOP Data Uploaded
Posted: 11 Jan 07:52 AM

September COOP Data Uploaded
Posted: 14 Dec 08:38 AM

VTEC Event ID Reusage
Posted: 08 Dec 07:45 AM

Sign up for the Daily Bulletin

Current Website Performance:
Bandwidth: 35.6 MB/s
Requests/Second: 2,017

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!

View more products »


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.

Download Precipitation for GIS »

Current Data

The IEM combines data from participating networks into products like maps shown above and web applications to analyze the data.

More current products »


ISU Agronomy
IIHR - University of Iowa