Redirecting the outputs of nohup

I use the nohup command to run a process as follows:

nohup someprocess > output.txt &

When I run it, it will always display this message:

Sending output to nohup.out

And I have to press Enter again for the command to return.

How do I prevent nohup from writing to nohup.txt? I have already direct the outputs to output.txt, so creating an empty nohup.out file is meaningless to me.

Also, how do I prevent the message "Sending output to nohup.out" from appearing? When it appears, I have to press Enter for the command to return.

Thanks.