Photoshop to vector
Fire Blast
by - Tremorwave

Use the polygon lasso tool to select a shape as below. The fill with white



Apply Filter --> Distort --> Radial Blur Zoom 100% The result should be similar to below.



Set the eraser as above and brush lightly around the edges of the shape until you have a similar look to the one below.

Apply Filter --> Blur --> Gaussian Blur Radius 1.2 The result should be similiar to below


Here is an example of it in use
 
PS: Tutorial written with the permission of the Author!
Tremorwave