Not sure if it's been posted yet but you can donate $10 if you text RedCross to 90999. I found out Saturday when Bill Prady, the Executive Producer of Big Bang Theory, Tweeted that if we did that and posted a confirmation (screen capture the phone screen) in reply to his Tweet, he'd match the donation. If we also sent the image to 45 and suggested that money set aside for a certain edifice be used for flood relief instead, Prady would double his matching amount. Thousands responded.
There has been some debate over whether the Red Cross is the best recipient of donations. Their performance after Katrina was found wanting.
Red Cross Exec Doesn't Know What Portion Of Donations Go To Harvey Relief : The Two-Way : NPR