The IEM and NWS have enjoyed a long standing partnership. This partnership has collected a number of awards including a 2002 NWA Award and 2007 NOAA Award. We also worked together on the IEMChat Project, which was later rolled into the present day NWSChat Project.
Automated Data Plotting is a very deep rabbit hole with hundreds of plotting options for many datasets of NWS interest.
Did you see an image posted to social media with the IEM logo on it?
Daryl posts some interesting graphics to his Twitter @akrherz page. Generally, these are one-off images that are not available for dynamic generation on this website.
Daryl posts some interesting graphics to his Twitter @akrherz page. Generally, these are one-off images that are not available for dynamic generation on this website.
Interest Areas
Aviation Weather Products
Flash Flooding / Hydrology
Precipitation Estimates/Observations
- Archived DCP Data Plotter
Simple app to plot out current/historical DCP (river gauges) data for a site of your choice. - Daily Climate Summary (AFOS: CLI Product) Interactive Map or Text Table
- CF6 Summary (AFOS: CF6 Product) Interactive Map or Text Table
- Daily COOP Observations
- Hourly Precipitation Summaries for ASOS
- IEM GIS Rainfall
Mostly Midwest products, but includes a conversion of MRMS to ERDAS Imagine Files. - MRMS Grib Archive
Archive of a handful MRMS products in Grib Format. The IEM archive page lists out additional MRMS archive resources. - Sortable Currents for ASOS, COOP, etc
Flood Warnings/Forecasts
Many of the apps in the "Severe Weather / VTEC" section are useful as well.
- HML based forecasts and observations
An archive of HML processed products is used to drive an interactive plot of forecasts and observations. - HML Processed Data Download
Download HML data for a site of your choice. - IEM Cow Polygon Verification
Application does LSR based verification of Flash Flood Warnings. - River Forecast Point Monitor
Summarizes FLS statements by River by WFO/State.
Severe Weather / VTEC
The Severe Weather Mainpage has more options listed.
Data / Realtime Monitoring
- GIS Shapefiles
of archived Storm Based Warning polygons. - IEMBot
Realtime chatrooms, twitter posting service, RSS feeds and more.
Special Weather Statements (SPS)
- SPS Polygon Download
Download shapefiles of SPSs. - SPS Search by Point
Search for SPSs by point. - SPS Text Download
Request raw SPS text over a period of your choice.
Maps and Graphics
- Days Since VTEC Product
Map of the number of days since a WFO issued a VTEC Product. - IEM Raccoon
Generate Microsoft Powerpoint of Storm Based Warnings for a WFO and RADAR site of your choice. - Number of VTEC Events by WFO
Map of the number of VTEC events by WFO for a time period of your choice. - NWS WWA Map Archive
The IEM saves the national watch, warning, and advisory (WWA) map every five minutes. - VTEC Browser
Interactive display of VTEC products. - VTEC Search by Point or County/Zone
Find issued VTEC WWA products by a given zone or county. Search for a storm based warning by point on a map.
Statistics / Metadata
- List SVR+TOR Warning Tags
This application will list tags used in Severe Thunderstorm and Tornado warnings by NWS Office by Year. - List Universal Geographic Codes (UGC) by WFO/State
- Number of VTEC Events by year
Table of the number of VTEC events by year. - VTEC Events by WFO or State by Year
Simple table listing any VTEC events by a given WFO or state for a given year. - Maximum VTEC EventID (ETN) by year
This diagnostic prints out the maximum issued VTEC eventid (ETN) by year. A useful diagnostic for a NWS Office wishing to check their local VTEC eventd database. - Tornado + Flash Flood Emergencies listing
Simple table showing IEM indicated Tornado and Flash Flood Emergency events. - Particularly Dangerous Situation Warnings
Simple table showing IEM indicated PDS Tornado / Flash Flood Warnings. - Summary Images of Daily Storm Based Warnings
Displays just the storm based warning geometries for one UTC day at a time. - Top 10 Polygon Sizes
Verification
- ASOS/AWOS Obs during WFO WWA
Prints out ASOS/AWOS observations during selected VTEC warning types. - Debug / Create Simple Graphic from LAT...LON text.
- IEM Cow
Interactive Storm Based Warning verification app
NWS Processed Datasets
ASOS/AWOS METAR
Regional Temperature & Precipitation (RTP)
The IEM attempts to generate RTP products as the NWS has discontinued them.
- IEM Autoplot 256 generator tool.
- 0Z SHEF for Iowa
- 12Z SHEF for Iowa
Cooperative Observer Program - COOP
- Monthly COOP Frequency Reports
Quantity of observations received by variable for the COOP network - Sortable Current COOP Reports
View today's COOP reports by WFO or by state. Includes derived frozen to liquid ratio and SWE reports.
HADS / DCP / GOES
- Archived DCP Data Plotter
Simple app to plot out current/historical DCP (river gauges) data for a site of your choice.
Local Storm Reports (LSR)
The IEM processes LSRs issued by the NWS in real-time. A number of applications on this website utilize this source of reports.
- NWS Damage Survey PNS Email List
An email list that provides any NWS issued Damage Survey PNS statements. - LSR + COOP Snowfall Analysis Autoplot #207
Dynamic analysis of available LSR and COOP reports that is used to generate these static maps for: Iowa, Iowa map without labels, and Midwest. - Past 24 hours of Storm Reports
ESRI Shapefile, Comma Delimited, GeoJSON
The IEM parses the realtime feed of NWS Local Storm Reports. Every 5 minutes, a process collects up the last 24 hours worth of reports and dumps them to the above files. - Archived Local Storm Reports
Generate a shapefile of LSRs for a period of your choice dating back to 2003! - Local Storm Report App
NEXRAD RADAR
- NEXRAD Storm Attributes
Download shapefiles of NEXRAD storm attribute data and view histogram summaries.
Snowfall
- Six Hour Snowfall Totals
Simple table of available 6 hour snowfall total reports.
Storm Prediction Center Products
- SPC Mesoscale Discussion Shapefile Download
- SPC Top 10 MCD Sizes
- SPC/WPC Outlook Shapefile Download
- SPC Top 10 Outlook Sizes
- SPC Watch Polygon Shapefile Download
- Convective Watches Information
Lists out some simple details on each convective watch. - List SPC Watches by Year
Lists out some simple details on all watches for a year. - Lists All SPC PDS Watches
Lists out watches tagged as Particularly Dangerous Situations (PDS). - SPC Outlook / MCD search by point
Allows answering of the question of when was a given point last under some convective outlook or the number of outlooks for a given point.
Weather Prediction Center Products
Numerical Model Data
- Model Output Statistics
Archive of MOS back to 3 May 2007. - HRRR MidWest 1km Reflectivity [animated GIF]
Animated GIF of HRRR Forecasted Reflectivity. Latest Run or Archived plots
Text Product Archives
- AFOS Product Viewer
Web based version of TextDB. - Map of Text Product Issuance Counts
Autoplot 210 will generate maps of how many text products are issued for a given product type. It will also plot the first and last usage of a product. - View Products by WFO by Date
View quick listings of issued products by forecast office and by date.