Archive of past heavy precipitation events
Switch to a different threshold:
Select a year: 50 year, 24-hour recurrence interval
Or download data: 50 year, 24-hour recurrence interval
Text and GIS shapefiles include basic information about each point where the precipitation amount exceeded the given threshold.
GIS files are zip archives with the needed information for plotting in most GIS software. We use the open-source Quantum GIS.
State outline shapefile is a modified version of the one provided at the SPC's SVRGIS site.