This option is only active when a group of storms have been selected via the "select storms by location" method.  It displays the storm group trend information indicating what percent strengthened, weakened and remained the same for the prior 6 hours, next 6, 12 and 24 hours.  This is useful when using the system to compare the historical data to a current storm situation.

Options available from here include:

PRINT - Print the current information

Cancel - Close this window