Storm Event Pictures

• 13 April 2006
  Iowa City tornado.
• 12 November 2005
  Tornadoes of Woodward, Stratford, and Ames.
• 25 May 2008
  Parkersburg EF5 Tornado.
• ... View all ...

NWS Watch/Warnings/Advisories

• Download Shapefiles
  Download shapefiles of warning geometries and metadata.
• Search by County/Zone
  Find archived warnings by searching for a county or zone.
• VTEC Browser
  Interactively navigate our archive of warnings.

RADAR Data

• Amazon S3 NEXRAD II Archive
  Your first stop if you are looking for archived Level II files!
• NIDS NEXRAD Data
  NEXRAD data from the seven sites (DMX,DVN,OAX,FSD,ARX,MPX,EAX) with Iowa coverage. Since mid April 2002, all NIDS products are archived. Before then, only base reflectivity was saved.
• IEM 2 day Level II Archive
  The IEM maintains an archive of Level II data for roughly the past two days.
• NCDC ~Complete NEXRAD archive
  This is the one-stop place for historical Level II and Level III NEXRAD information. A wonderful site!
• Texas Mesonet LEVEL II archive
  Past 30 days of Level II data for all NEXRAD sites.
• Texas Mesonet LEVEL III archive
  Past 30 days of Level III data for all NEXRAD sites.
• GIS NEXRAD Composites
  Composites of NEXRAD base reflectivity. The raw files are found in the general IEM archive in the sub-directory called 'GIS/uscomp/'.
• Single Site NIDS Imagery
  You can generate images from their online archive!

Satellite

• NOAA Satellite and Information Service
  A wonderful site to download historical satellite data.
• NSSL Storm Tracker
  Current and archived satellite imagery along with some derived products.

NWS Text Products

The IEM archives all NWS issued text products. Unfortunately, the we don't have this full archive online yet. NCDC has a big archive of this data back to 2001. The IEM's archives can be found:

• AFOS Product Finder
  If you know what you are looking for, this app works great!
• Simple directory listing
  Certain warning type products can be found in the main IEM data archive directory structure.
• List Products by WFO by Date
  View quick listings of issued products by forecast office and by date.
• NWS Record Event Reports
  Daily reports of record temperatures and precipitation for Iowa since November 2001

Raw Data

• Bufkit archives
  Iowa Only The general IEM data archive contains a sub-directory called 'bufkit'. This directory contains model point soundings for locations near Iowa. The archive started 25 January 2006 - 27 March 2015.
  Mtarchive Bufkit Archive This archive contains data for many more sites and models, including SREF.
• GEMPAK data archive
  Archive of gempak products taken from the UNIDATA NOAAPORT feed. This archive dates back to 2001 and for some dates even further.
• IEM Network Data
  IEM data in its original unprocessed form. ASOS/AWOS METAR observation, RWIS comma-deliminated data, schoolnet csv data, SCAN site format and COOP observations
• Unidata IDD 6 month archive
  Archive of raw data provided by Unidata for the past 6 months!
• NCDC NOMADS Big Archive!!
  Lots of raw model data and other goodies, a definite must-visit.

Misc

• Archived IEM Product Browser
  This "time machine" interface allows for quick browsing of IEM Products.
• NWS DIFAX Archive (2000-)
  Excellent archive of the NWS DIFAX products.
• Precipitable Water Climatologies
  Fascinating month-by-month plots of PWAT climatologies for the RAOB sites in the CONUS
• UCAR plot archive
  Assorted RADAR, satellite, and model plots back to 1998.
• IEM Generated Plots
  Images and data products mostly displayed in real time on the current data page. Iowa Mesonet plots, hourly precip plots, mesonet stats and COOP precip plots are examples.
• IEM Data in GEMPAK Format
  IEM surface data in GEMPAK format. Data files exist with different combinations of IEM networks.
• Model MOS Archive
  NWS archive of model output statistics (MOS)
• IEM's Model MOS Archive
  IEM's archive of model output statistics (MOS)
• NCDC Severe Weather Data Inventory
  Extremely fancy archive of various datasets dealing with severe weather.
• NCDC Snow Climatologies
  Lots of great statistics on snowfall and snow depth.
• PALS WX Image Archive
  The PALS website generates hourly plots of US weather. Of interest are archives of RUC, ETA, and AVN model plots. National radar summaries, surface plots and other plots.
• NRCS wind climatologies (1961-1990)
• Historical Tornado Tracks
• USGS Instantaneous Data Archive
  Goldmine of historical USGS river gage data.

US Daily Weather Maps

• Recent maps from NCEP
• Daily maps
• Maps from 1872 to 2002
• NCDC Image and Publications System

Data download forms

• AgClimate Daily Download
  Download daily summaries of data from the Iowa AgClimate sites since 1986.
• AgClimate Hourly Download
  Download hourly observations from the Iowa AgClimate sites since 1986.
• ASOS 1 minute download
  Download 1 minute interval data from Iowa ASOS sites.
• ASOS Download
  Download observations from the airport sensors around the world!
• COOP Raw Download
  Download the raw daily observations from the NWS COOP network.
• DCP Data Download
  Download archived DCP data processed by the IEM.
• Download Iowa RWIS Soil Data
  This download page provides soil information collected by the Iowa RWIS Sites.
• Download Iowa RWIS Traffic Data
  This download page provides traffic data collected by the Iowa RWIS sites.
• Iowa AWOS 1 minute download
  Download one minute interval observations from the Iowa AWOS sites
• NLAE Flux Sites
  Download data from the NLAE Flux sites collected by the IEM.
• RWIS Data Download
  Download observations from the Iowa RWIS network.
• SchoolNet Data Download
  Download one minute interval KCCI-TV, KELO-TV, and KIMT-TV school network weather data.