is a graphical database of severe thunderstorm and tornado occurrences in
the United States. Datafiles are available from 1950 - 2002, with annual
updates expected around July of each year. The program allows customized
plots of severe weather reports. Full color plots can be created, with various
statistical values also calculated. Tabular data can also be saved in ASCII
format for use in other programs.
image above for screen capture example.
Windows 95 or later
At least 28mb of disk space
Unfortunately, no documentation
is available for this program. Its use is quite straight-forward, and
a few minutes of working with it should be sufficient to find most of
The software and datafiles are available free of charge.
version of SeverePlot software and datafiles
(Ver 2.5, Approx. 7.9MB)
This package contains the latest program files and all data through 2002.
After you have downloaded the file above, copy it into a directory of its
own and "unzip" it. Next, run the program "setup.exe"
and follow the prompts. Users of SvrPlot2 prior to 2002 must un-install
their old version and re-install this package.
program and data files
(2003-2006 ; Approx. 1.3MB)
the instructions included in the README.TXT file.
Storm Prediction Center
to the Storm Prediction Center