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 ...

RADAR Data

• 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.

Raw Data

• Bufkit archive
  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.
• 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
• NWS Record Event Reports
  Daily reports of record temperatures and precipitation for Iowa since November 2001
• 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 Data Browser
  Browse the archive of products via this frames based interface.
• 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)
• 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

US Daily Weather Maps

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

Data download forms

• 1 minute AWOS data
  Download/Plot/View 1 minute AWOS data since 1 Jan 1995.
• 1 minute schoolNet data
  Download/View 1 minute schoolNet data since 12 Feb 2002.
• Hourly ASOS/AWOS Precip Reports
  Hourly precipitation HTML grids from the archive. A useful tool to quickly find precipitation totals.
• Hourly ASOS/AWOS/RWIS Observations
  Quickly query the IEM databases for historical RWIS/ASOS/AWOS observations. This dataset contains the raw observations.