Regex - Find Tag with linebreak

How to find the <span>LINEBREAK</span> Tags in the middle ( the second opening and closing span Tags ) ?

<span>
Some Text
</span>
<span>

</span>
<span>
Some other Text
</span>

If is use <span> I can find the opening Tag. If I use <\/span> I can find the closing Tag. If i use ^\s*$ I can find the Linebreak. But how can I combine all three ?

<span>^\s*$<\/span> doesn't work.

I also tried <span>\n^\s*$\n<\/span> and <span>\r\n^\s*$\r\n<\/span>.