Elegant way to produce description of columns based on column data

I have a pandas dataframe:

index    data1    data2
1        30       20
2        20       10  
3        40       90

I want to produce an array of descriptions, one for each row, indicating whether piece of data was significant.

I define significant as having value over 25, so I want the following array:

['data1 was significant', '',  'data1 was significant\ndata2was significant']

I know that I can go through each row and check each column and build an array, but I am wondering if there is an elegant way to do this using pandas.