Current Severe Weather

• NWS Text Product Finder
  A quick and easy way to find NWS text products if you know the product identifiers.
• Web iembot monitor
  This fancy application allows you to monitor text products coming from your local NWS office or the entire nation in realtime!
• Current NEXRAD Storm Attributes
  Point shapefile generated every minute containing a summary of NEXRAD storm attributes.
• Convective Watches Overview
  10 maps of the last locations of convective watches issued by SPC.

GIS Local Storm Reports

• 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.
• Download Archived LSRs
  Generate a shapefile of LSRs for a period of your choice dating back to 2003!

GIS Watch/Warnings

• Current Shapefile
  A shapefile of active county based and storm based based weather warnings. This file is updated every 5 minutes.
• Download Archived NWS Warnings
  Generate a GIS shapefile of weather warnings for a time period of your choice!

Apps with Statistics

• Summary of Polygon Sizes
  View storm based warning size summary statistics by WFO for a period of your choice.
• Top 10 Polygon Sizes
  List top 10 largest and smallest storm based warnings by WFO.
• Top 10 SPC Mesoscale Convective Discussion Sizes
  List top 10 largest and smallest polygons associated with SPC MCDs.
• Days since VTEC WWA Product
  Generates a map of the number of days since a VTEC WWA Product.
• 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.
• Yearly counts of VTEC Products
  Generates a table of the number of VTEC products issued by year.

Apps with Archives

• IEM Cow
  Unofficial NWS storm-based warning verification.
• IEM Raccoon
  Generate Microsoft Powerpoint overviews of storm based warnings.
• Search by County/Zone or Point
  Find archived warnings by searching for a county or zone. You can also search for storm based warnings by a point.
• Storm Prediction Center (SPC) Watches since 1997.
  Maps of SPC issued watches and initial RADAR (since 1997) at watch issuance.
• Nationwide Weather Warnings.
  Popular web mapping application showing all sorts of information relating to severe weather. Works great for situational awareness displays.
• VTEC product browser
  Popular application that allows you to navigate thru an archive of weather warnings. Full text is displayed along with the maps.
• MidWest Composite w/ warnings
• US Composite w/ warnings
• Storm Based Warnings: daily summary images, images displaying sbw for a given date.

Severe Weather Outlooks

The IEM attempts to main a realtime ingest of the Storm Prediction Center convective outlooks. This comparison is a simple visual diagnostic between the two.

Current Day 1 Outlook

Current Day 2 Outlook

Current Day 3 Outlook

Current Day 4-8 Outlook

WPC Excessive Rainfall Outlooks

The IEM attempts to main a realtime ingest of the Weather Prediction Center rainfall outlooks. This comparison is a simple visual diagnostic between the two.

Current Day 1 Outlook

Current Day 2 Outlook

Current Day 3 Outlook

Experimental Day 4 Outlook

Experimental Day 5 Outlook